FORM 10-K Annual Report Pursuant to Section 13 and 15(D)

SECURITIES AND EXCHANGE COMMISSION

FORM 10-K Annual report pursuant to section 13 and 15(d)

Filing Date: 2021-05-20 | Period of Report: 2021-03-31 SEC Accession No. 0001564590-21-029065

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FILER TRIUMPH GROUP INC Mailing Address Business Address 899 CASSATT ROAD 899 CASSATT ROAD CIK:1021162| IRS No.: 510347963 | State of Incorp.:DE | Fiscal Year End: 0331 SUITE 210 SUITE 210 Type: 10-K | Act: 34 | File No.: 001-12235 | Film No.: 21944483 BERWYN PA 19312 BERWYN PA 19312 SIC: 3720 Aircraft & parts (610) 251-1000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document fff UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2021 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-12235 Triumph Group, Inc. (Exact name of registrant as specified in its charter) Delaware 51-0347963 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification Number) 899 Cassatt Road, Suite 210, Berwyn, Pennsylvania 19312 (Address of principal executive offices, including zip code) Registrant's telephone number, including area code: (610) 251-1000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, par value $.001 per share TGI New York Stock Exchange Purchase rights New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒ No ☐ Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934. Yes ☐ No ☒ Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐ Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐ Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Securities Exchange Act of 1934. (Check one) Large accelerated filer ☐ Accelerated filer ☒ Non-accelerated filer ☐ Smaller reporting company☐ Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its report. ☒ Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Securities Exchange Act of 1934). Yes ☐ No ☒ As of September 30, 2020, the aggregate market value of the shares of Common Stock held by non-affiliates of the Registrant was approximately $336 million. Such aggregate market value was computed by reference to the closing price of the Common Stock as reported on the New York Stock Exchange on September 30, 2020. For purposes of making this calculation only, the Registrant has defined affiliates as including all directors and executive officers. The number of outstanding shares of the Registrant's Common Stock, par value $.001 per share, on May 17, 2021, was 64,220,262. Documents Incorporated by Reference Portions of the following document are incorporated herein by reference:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The Proxy Statement of Triumph Group, Inc. to be filed in connection with our 2021 Annual Meeting of Stockholders is incorporated in part in Part III hereof, as specified herein.

Item No. Page PART I 3 Item 1. Business 3 General 3 Products and Services 3 Proprietary Rights 4 Sales, Marketing and Engineering 5 Backlog 5 Dependence on Significant Customers 5 Competition 5 Government Regulation, including Environmental Regulations, and Industry Oversight 6 Human Capital Resources 7 Executive Officers 8 Recent Developments 9 Available Information 9 Item 1A. Risk Factors 10 Item 1B. Unresolved Staff Comments 19 Item 2. Properties 19 Item 3. Legal Proceedings 20 Item 4. Mine Safety Disclosures 20 PART II 21 Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities 21 Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 23 Item 7A. Quantitative and Qualitative Disclosures About Market Risk 40 Item 8. Financial Statements and Supplementary Data 42 Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure 86 Item 9A. Controls and Procedures 86 Item 9B. Other Information 89 PART III 90 Item 10. Directors, Executive Officers and Corporate Governance 90 Item 11. Executive Compensation 90 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 90 Item 13. Certain Relationships, Related Transactions, and Director Independence 90 Item 14. Principal Accountant Fees and Services 90 PART IV 91 Item 15. Exhibits, Financial Statement Schedules 91

Item 1. Business Cautionary Note Regarding Forward-Looking Statements This report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our future operations and prospects, including statements that are based on current projections and expectations about the markets in which we operate, and management's beliefs concerning future performance and capital requirements based upon current available information. Such statements are based on management's beliefs as well as assumptions made by and information currently available to management. When used in this document, words like "may," "might," "will," "expect," "anticipate," "plan," "believe," "potential," and similar expressions are intended to identify forward-looking statements. Actual results could differ materially from management's current expectations. For example, there can be no assurance that additional capital will not be required, and that such amounts may be material, or that additional capital, if required, will be available on reasonable terms, if at all, at such times and in such amounts as may be needed by us. In addition to these factors, among other factors that could cause actual results to differ materially, are uncertainties relating to the integration of acquired businesses; general economic conditions affecting our business segments; the continued impact of the coronavirus (“COVID-19”) pandemic; the severe disruptions to the economy, the financial markets, and the markets in which we compete; dependence of certain of our businesses on certain key customers; and the risk that we will not realize all of the anticipated benefits from acquisitions as well as competitive factors relating to the aerospace industry. For a more detailed discussion of these and other factors affecting us, see the risk factors described in "Item 1A. Risk Factors." A prolonged impact of COVID-19 could also have the effect of heightening many of these risks.

General Triumph Group, Inc. ("Triumph," the "Company," "we," "us," or "our") was incorporated in 1993 in Delaware. Our companies design, engineer, manufacture, repair, and overhaul a broad portfolio of aerospace and defense systems, subsystems, components, and structures. We serve the global aviation industry, including original equipment manufacturers (“OEMs”) and the full spectrum of military and commercial aircraft operators through the aircraft life cycle.

Products and Services We offer a variety of products and services to the aerospace industry through two operating segments: (i) Triumph Systems & Support, whose companies design, develop, and support proprietary components, subsystems and systems; produce complex assemblies using external designs; and provide full life cycle solutions for commercial, regional, and military aircraft and (ii) Triumph Aerospace Structures, whose companies supply commercial, business, regional, and military manufacturers with large metallic and composite structures and produce close-tolerance parts primarily to customer designs and model-based definition, including a wide range of aluminum, hard metal and composite structure capabilities. Systems & Support’s capabilities include hydraulic, mechanical and electromechanical actuation, power and control; a complete suite of aerospace gearbox solutions, including engine accessory gearboxes and helicopter transmissions; active and passive heat exchange technology; fuel pumps, fuel metering units, and full authority digital electronic control fuel systems; hydromechanical and electromechanical primary and secondary flight controls; and a broad spectrum of surface treatment options. The products and capabilities within this group include the design, manufacture, build and repair of:

Aircraft and engine-mounted accessory drives Thermal control systems and components Cargo hooks High lift actuation Cockpit control levers Hydraulic systems and components Control system valve bodies Landing gear actuation systems Electronic engine controls Landing gear components and assemblies Exhaust nozzles and ducting Main engine gear box assemblies Geared transmissions and drive train components Main fuel pumps Fuel-metering units Secondary flight control systems Vibration absorbers

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Extensive product and service offerings include full post-delivery value chain services that simplify the maintenance, repair and overhaul ("MRO") supply chain. Through its ground support equipment maintenance, component MRO and postproduction supply chain activities, Systems & Support is positioned to provide integrated planeside repair solutions globally. Capabilities include metallic and composite aircraft structures; nacelles; thrust reversers; interiors; auxiliary power units; and a wide variety of pneumatic, hydraulic, fuel and mechanical accessories. Companies in Systems & Support repair and overhaul various components for the aviation industry, including:

Air cycle machines Blades and vanes APUs Cabin panes, shades, light lenses and other components Constant speed drives Combustors Engine and airframe accessories Stators Flight control surfaces Transition ducts Integrated drive generators Sidewalls Nacelles Light assemblies Remote sensors Overhead bins Thrust reversers Fuel bladder cells

Aerospace Structures' products include fuselage panels, horizontal and vertical tails, and subassemblies such as floor grids. Aerospace Structures also has the capability to engineer detailed structural designs in metal and composites. Aerospace Structures capabilities also include advanced composite and interior structures, and joining processes such as welding, autoclave bonding and conventional mechanical fasteners. The products and capabilities within this group include the design, manufacture, build and repair of:

Composite and metal bonding Flight control surfaces Engine nacelles Integrated testing and certification services Empennages Wing flaps Acoustic and thermal insulation systems Composite ducts and floor panels

However, as a result of the divestitures disclosed in Note 22, subsequent to March 31, 2021, we no longer design, manufacture, build, and repair aircraft wings and composite and metal bonding.

Proprietary Rights We benefit from our proprietary rights relating to designs, engineering and manufacturing processes, and repair and overhaul procedures. For some products, our unique manufacturing capabilities are required by the customer's specifications or designs, thereby necessitating reliance on us for the production of such specially designed products. We view our name and trademark as significant to our business as a whole. Our products are protected by a portfolio of patents, trademarks, licenses or other forms of intellectual property that expire at various dates in the future. We continually develop and acquire new intellectual property and consider all of our intellectual property to be valuable. However, based on the broad scope of our product lines, management believes that the loss or expiration of any single intellectual property right would not have a material adverse effect on our results of operations, our financial position, or our business segments. Our policy is to file applications and obtain patents for our new products as appropriate, including product modifications and improvements. While patents generally expire 20 years after the patent application filing date, new patents are issued to us on a regular basis. In our overhaul and repair businesses, OEMs of equipment that we maintain for our customers often include language in repair manuals that relate to their equipment, asserting broad claims of proprietary rights to the contents of the manuals used in our operations. There can be no assurance that OEMs will not try to enforce such claims, including the possible use of legal proceedings. In the event of such legal proceedings, there can be no assurance that such actions against the Company will be unsuccessful. However, we believe that our use of manufacture and repair manuals is lawful.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Sales, Marketing and Engineering While each of our operating companies maintains responsibility for selling and marketing its specific products, we have developed two marketing teams at the operating segment level who are focused on business development and cross- selling our broad capabilities. One team is dedicated to Systems & Support, and the other team supports Aerospace Structures. These teams are responsible for selling aerospace structures, systems, integrated assemblies, and repair and overhaul services, reaching across our operating companies, to our OEM, military, airline and air cargo customers. In certain limited cases, we use independent, commission-based representatives to serve our customers' changing needs in some of the markets and geographic regions in which we operate. The two group-level marketing teams operate as the front end of the selling process, establishing or maintaining relationships, identifying opportunities to leverage our brand, and providing service for our customers. Each individual operating company is responsible for its own technical support, pricing, manufacturing, and product support. Also, within Systems & Support, we meet our customers’ needs by designing systems that integrate the capabilities of our companies. A significant portion of our government and defense contracts are awarded on a competitive bidding basis. We generally do not bid or act as the primary contractor but will typically bid and act as a subcontractor on contracts on a fixed-price basis. We generally sell to our other customers on a fixed-price, negotiated contract, or purchase order basis. When subcontracting, there is a risk of nonperformance by our subcontractors, which could lead to disputes regarding quality, cost or impacts to production schedules. Additionally, economic environment changes or natural disasters, trade sanctions, tariffs, budgetary constraints, earthquakes, fires, extreme weather conditions, or pandemics, affecting the prime contractor and our subcontractors may adversely affect their ability to meet or support our performance requirements.

Backlog We have a number of long-term agreements with several of our customers. These agreements generally describe the terms under which the customer may issue purchase orders to buy our products and services during the term of the agreement. These terms typically include a list of the products or repair services customers may purchase, initial pricing, anticipated quantities and, to the extent known, delivery dates. In tracking and reporting our backlog, however, we only include amounts for which we have actual purchase orders with firm delivery dates or contract requirements generally within the next 24 months, which primarily relate to sales to our OEM customer base. Purchase orders issued by our aftermarket customers are usually completed within a short period of time. As a result, our backlog data relates primarily to the OEM customers. The backlog information set forth below does not include the sales that we expect to generate from long-term agreements for which we do not have actual purchase orders with firm delivery dates. As of March 31, 2021, we had outstanding purchase orders representing an aggregate invoice price of approximately $1.87 billion, of which $1.18 billion and $0.68 billion related to Systems & Support and Aerospace Structures, respectively. As of March 31, 2020, our continuing operations had outstanding purchase orders representing an aggregate invoice price of approximately $3.20 billion, of which $1.47 billion and $1.73 billion related to Systems & Support and Aerospace Structures, respectively. Of the existing backlog of $1.87 billion, approximately $0.81 billion will not be shipped by March 31, 2022. Refer to Management’s Discussion and Analysis of Financial Condition and Results of Operations for further information on our backlog.

Dependence on Significant Customers As disclosed in Note 19, a significant portion of our net sales are to the Boeing Company (“Boeing”). Refer to Note 19 for specific disclosure of the concentration of net sales and accounts receivable to these customers. A significant reduction in sales to Boeing may have a material adverse impact on our financial position, results of operations and cash flows.

Competition We compete primarily with Tier 1 and Tier 2 systems suppliers and component manufacturers, some of which are divisions or subsidiaries of other large companies, in the manufacture of aircraft structures, systems components, subassemblies and detail parts. Competition for the repair and overhaul of aviation components comes from four primary sources, some of whom possess greater financial and other resources than we have, and as a result, may be in a better position to handle the current environment: OEMs, major commercial airlines, government support depots, and other independent repair and overhaul companies. Some major commercial airlines continue to own and operate their own service centers, while others have begun to sell or outsource their repair and overhaul services to other aircraft operators or third parties. Large domestic and foreign airlines that provide repair and overhaul services typically provide these services not only for their own aircraft but

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document for other airlines as well. OEMs also maintain service centers that provide repair and overhaul services for the components they manufacture. Many governments maintain aircraft support depots in their military organizations that maintain and repair the aircraft they operate. Other independent service organizations also compete for the repair and overhaul business of other users of aircraft components.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Participants in the aerospace industry compete primarily on the basis of breadth of technical capabilities, quality, turnaround time, capacity and price.

Government Regulation, Including Environmental Regulations, and Industry Oversight Government Regulation and Industry Oversight The aerospace industry is highly regulated in the United States by the Federal Aviation Administration ("FAA") and in other countries by similar agencies. We must be certified by the FAA and, in some cases, by individual OEMs, in order to engineer and service parts and components used in specific aircraft models. If material authorizations or approvals were revoked or suspended, our operations would be adversely affected. New and more stringent government regulations may be adopted, or industry oversight heightened, in the future and these new regulations, if enacted, or any industry oversight, if heightened, may have an adverse impact on us. We must also satisfy the requirements of our customers, including OEMs, that are subject to FAA regulations, and provide these customers with products and repair services that comply with the government regulations applicable to aircraft components used in commercial flight operations. The FAA regulates commercial flight operations and requires that aircraft components meet its stringent standards. In addition, the FAA requires that various maintenance routines be performed on aircraft components, and we currently satisfy these maintenance standards in our repair and overhaul services. Several of our operating locations are FAA-certificated repair stations. Generally, the FAA only grants approvals for the manufacture or repair of a specific aircraft component, rather than the broader approvals that have been granted in the past. The FAA approval process may be costly and time-consuming. In order to obtain an FAA Air Agency Certificate, an applicant must satisfy all applicable regulations of the FAA governing repair stations. These regulations require that an applicant have experienced personnel, inspection systems, suitable facilities and equipment. In addition, the applicant must demonstrate a need for the certificate. An applicant must procure manufacturer’s repair manuals from design approval holders relating to each particular aircraft component. Because of these regulatory requirements, the application process may involve substantial cost. The certification processes for the European Aviation Safety Agency ("EASA"), which regulates this industry in the European Union; the Civil Aviation Administration of China; and other comparable foreign regulatory authorities are similarly stringent, involving potentially lengthy audits. EASA was formed in 2002 and is handling most of the responsibilities of the national aviation authorities in Europe, such as the United Kingdom Civil Aviation Authority. Our operations are also subject to a variety of worker and community safety laws. For example, the Occupational Safety and Health Act of 1970 ("OSHA"), mandates general requirements for safe workplaces for all employees in the United States. In addition, OSHA provides special procedures and measures for the handling of hazardous and toxic substances. Specific safety standards have been promulgated for workplaces engaged in the treatment, disposal or storage of hazardous waste. We believe that our operations are in material compliance with OSHA's health and safety requirements. Environmental Regulation Our business, operations and facilities are subject to numerous stringent federal, state, local and foreign environmental laws and regulations by government agencies, including the Environmental Protection Agency ("EPA"). Among other matters, these regulatory authorities impose requirements that regulate the emission, discharge, generation, management, transportation and disposal of hazardous materials, pollutants and contaminants; govern public and private response actions to hazardous or regulated substances which may be or have been released to the environment; and require us to obtain and maintain licenses and permits in connection with our operations. This extensive regulatory framework imposes significant compliance burdens and risks on us. Although management believes that our operations and our facilities are in material compliance with such laws and regulations, future changes in these laws, regulations, or interpretations thereof or the nature of our operations or regulatory enforcement actions which may arise, may require us to make significant additional capital expenditures to ensure ongoing compliance or engage in remedial actions. Certain of our facilities, including facilities acquired and operated by us or one of our subsidiaries have at one time or another been under active investigation for environmental contamination by federal or state agencies when acquired, and at least in some cases, continue to be under investigation or subject to remediation. We are frequently indemnified by prior owners or operators and/or present owners of the facilities for liabilities that we incur as a result of these investigations and the environmental contamination found that predates our acquisition of these facilities, subject to certain limitations. We also maintain a pollution liability policy that provides coverage for certain material liabilities associated with the cleanup of on-site pollution conditions, as well as defense and indemnity for certain third-party suits (including Superfund liabilities at third-party sites), in each case, to the extent not otherwise indemnified. This policy applies to all of our manufacturing and assembly operations worldwide. Also, as we proceed with our plans to exit certain facilities as part of restructuring and related initiatives, the need for remediation for potential environmental contamination could be identified, and such

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document obligations could be material. If we are required to pay the expenses related to environmental liabilities because neither indemnification nor insurance coverage is available, these expenses could have a material adverse effect on us.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Human Capital Resources Our success greatly depends on identifying, attracting, engaging, developing, and retaining a highly skilled workforce in multiple areas, including engineering, manufacturing, information technology, cybersecurity, business development, finance, and strategy and management. Our human capital management strategy places significant importance on attracting and developing a talented and diverse workforce by creating a workplace that is engaging and inclusive and promotes a culture of innovation, excellence, and continuous improvement. The objectives of our human capital management strategy are aligned with and support our strategic and financial goals. We use a wide variety of human capital measures in managing our business, including: workforce demographics and diversity metrics; talent acquisition, retention, and development metrics; and employee safety and health metrics. Diversity and Workforce Demographics We value the diversity of our workforce and believe that the best innovation and business results are achieved when teams are populated with individuals from a diverse set of backgrounds, cultures, genders, and experiences. We have a Diversity & Inclusion Steering Committee (“DISC”) committed to creating an environment in which all employees feel valued, included, and empowered to share their unique experiences, perspectives, and viewpoints. We believe this is critical to the success of our business and the delivery of worldclass manufacturing, engineering, and aerospace services. We track the diversity of our leadership and workforce and review our progress toward our diversity objectives with the Company’s Board of Directors on a periodic basis. Across our total employee population and based on employees who self-identify, as of March 31, 2021, approximately 28% of our employees are female, 10% are people of color, and 8% are veterans. Several of our subsidiaries are parties to collective bargaining agreements with labor unions. Under those agreements, we currently employ approximately 1,247 full-time employees. Currently, approximately 19% of our 6,692 permanent employees are represented by labor unions and approximately 55% of net sales are derived from the facilities at which at least some employees are unionized. Of the 1,247 employees represented by unions, no employees are working under contracts that have expired. Our inability to negotiate an acceptable contract with any of our labor unions could result in strikes by the affected workers and increased operating costs as a result of higher wages or benefits paid to union members. If the unionized workers were to engage in a strike or other work stoppage, or if other employees were to become unionized, we could experience a significant disruption of our operations and higher ongoing labor costs, which could have an adverse effect on our business and results of operations. Talent Acquisition, Retention, and Development Hiring, developing, and retaining talented employees, particularly in highly technical areas, is an integral part of our human capital management. In addition to our focus on recruitment, we monitor attrition rates, including with respect to top talent. We believe that the commitment and connection of employees to their workplace, what we refer to as employee engagement, is a critical component of retention of top talent. We periodically conduct surveys of our workforce designed to gauge “employee engagement”. Our People & Culture Committee monitors the responses to these surveys in our pursuit of continuously improving our employee engagement metrics. We also continue to invest in technology that supports the effectiveness, efficiency, and engagement of our employees, including advanced communication systems and processes. These investments were particularly valuable as we navigated the challenges presented by the global COVID-19 pandemic. We also attract and reward our employees by providing market-competitive compensation and benefit practices that cover the many facets of health, including resources and programs designed to support physical, mental, and financial wellness. We also provide tuition reimbursement and other educational and training opportunities to our employees. Employee Safety and Health Ensuring the safety of our employees is a top priority for us. Our safety and health program seeks to enhance business value by creating a safe and healthy work environment, promote the resiliency of our workforce and engage our employees. We provide health and safety guidance and resources to all of our businesses in order to ensure occupational safety, reduce risk, and prevent incidents. Our values include the commitment of each person to creating a safe work environment for themselves and their team members, and, through various programs and activities, we recognize individuals in our organization who make significant contributions to workplace safety. We monitor the effectiveness of our safety and health program by comparing recordable incidents and incident severity to specific performance metrics established annually. We measure the volume of safety incidents through the total recordable incident rate (“TRIR”) metric, and we measure incident severity through the days away restricted and transferred (“DART”) metric across all of our facilities. These rates are measured on a calendar year basis, and the table below reflects our results over the three most recent calendar years:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Calendar year ended Safety Metric 2020 2019 2018 TRIR 1.9 2.3 2.2 DART 1.3 1.4 1.2 TRIR = total number of recordable cases x 200,000 / total hours worked DART = number of cases with days away from work x 200,000 / total hours worked by all employees

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document In response to the global COVID-19 pandemic, we established a cross-functional team to develop appropriate workplace safety and health policies. We implemented strict protocols aimed at protecting our people and keeping our factories operational and followed Centers for Disease Control and Prevention (“CDC”) guidance. Drawing upon our core value of acting with velocity, Triumph team members responded locally and on a company-wide basis with innovative solutions to limit the spread of the virus and deliver products and services to customers. This included equipping employees with personal protective equipment; sanitizing workspaces more frequently; and investing in technologies, including enhanced rapid communication software and other technologies that enabled many employees to work remotely. We limited travel and adjusted our capacity and staffing levels in response to commercial demands. The Company also produced and distributed over 10,000 masks to local medical facilities. Our COVID-19 response team continues to monitor the impact of the pandemic and will continue to provide guidance to our businesses and employees with regard to appropriate safety measures and policies. Community Service and Philanthropy Since 2011, we have demonstrated a deep dedication to corporate citizenship through our Wings community outreach program. Through Wings, based on the needs of their communities, our employees around the world create and implement service projects by partnering with local nonprofit organizations and engage in meaningful volunteer projects that directly benefit local charities committed to serving the needs of others. In 2018, to commemorate our 25th anniversary, the Company committed to 25,000 hours of volunteerism. Through the Wings program and individual acts of volunteerism, employees at our sites have partnered with organizations, including The United Way, The American Red Cross, The Salvation Army, Boys and Girls Club of Middle Tennessee, Ouachita Children’s Center, Los Angeles Regional Food Bank, Second Harvest Food Bank, and many others. The Company enjoys partnering in local communities, and team-based volunteer events help bring our employees together as one team serving its communities. In 2008, the Triumph Group Charitable Foundation was formed. The Triumph Group Charitable Foundation allocates its approximately $300 thousand annual grant budget to recipient organizations with the missions of advancing education, particularly in the areas of science, technology, engineering, and mathematics (“STEM”) improving our communities and supporting veterans and military families.

Executive Officers Our current executive officers are:

Name Age Position Daniel J. Crowley 58 Chair, President and Chief Executive Officer James F. McCabe, Jr. 58 Senior Vice President, Chief Financial Officer Jennifer H. Allen 49 Senior Vice President, General Counsel and Secretary Lance R. Turner 50 Senior Vice President, Chief Human Resources Officer Thomas A. Quigley, III 44 Vice President, Investor Relations and Controller William Kircher 54 Executive Vice President, Systems & Support

Daniel J. Crowley was appointed President and Chief Executive Officer and a director of the Company on January 4, 2016. He was elected Chair of the Board of Directors of the Company on November 17, 2020. Previously, Mr. Crowley served as a corporate vice president and President of Integrated Defense Systems at Raytheon Company from 2013 until 2015, and as President of Network Centric Systems at Raytheon Company from 2010 until 2013. Prior to joining Raytheon Company, Mr. Crowley served as Chief Operating Officer of Lockheed Martin Aeronautics after holding a series of increasingly responsible assignments across its space, electronics, and aeronautics sectors. James F. McCabe, Jr. has been our Senior Vice President and Chief Financial Officer since August 2016. He joined the Company from Steel Partners Holdings, where he served in a number of roles from 2007 to 2016, including the following: Senior Vice President and CFO, President, Shared Services, and Senior Vice President and CFO of its affiliates Handy & Harman and Steel Excel. Prior to joining Steel Partners Holdings, Mr. McCabe served as Vice President, Finance and Treasurer of American Water’s Northeast Region from 2004 to 2007, and President and CFO of Teleflex Aerospace from 1991 to 2003, which served the global aviation industry. He has previously qualified as a certified public accountant and Six Sigma Green Belt and served as a member of the Board of Governors and the Civil Aviation Council Executive Committee for the Aerospace Industries Association. Jennifer H. Allen has been a Senior Vice President and our General Counsel and Secretary since September 2018. She joined Triumph Group from CIRCOR International, Inc., where she was Senior Vice President, General Counsel &

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Secretary from 2016 to 2018. Previously, she was Vice President & Associate General Counsel – Corporate for BAE Systems, Inc., from 2010 to 2016, a member of the mergers and acquisition group in the New York office of Jones Day from 2005 to 2010, and a member of the business and finance group in the Philadelphia office of Morgan, Lewis & Bockius LLP from 1996 to 2001. Lance R. Turner was appointed our Senior Vice President and Chief Human Resources Officer in September 2017. From 2013 until September 2017, Mr. Turner served as Vice President of Human Resources for CenturyLink, Inc.; and from 2000 until 2013, as Senior Director of Human Resources for Honeywell.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Thomas A. Quigley, III has been our Vice President, Investor Relations and Controller since December 2019. From November 2012 to December 2019, Mr. Quigley served as our Vice President and Controller, and serves as the Company's principal accounting officer. Mr. Quigley previously served as the Company's SEC Reporting Manager from 2009 to 2012. From 2002 until joining Triumph in 2009, Mr. Quigley held various roles within the audit practice of KPMG LLP, including Senior Audit Manager. William Kircher was appointed our Executive Vice President, Customer Solutions & Support in February 2021, having joined the Company in September 2018. Prior to joining the Company, he served as Chief Operating Officer of MB Aerospace, a Blackstone portfolio company, from 2016 to 2017 and as CEO of VAS Aero Services, a HIG portfolio company, in 2015. Mr. Kircher also spent 18 years with United Technologies Corporation in various domestic and international leadership roles, including President, UTC Aerospace Singapore, and Vice President, Singapore Overhaul and Repair for Pratt and Whitney.

Recent Developments As disclosed in Note 3, we completed the divestiture of a number of our assets and operations in the year ended March 31, 2021, the largest of which was the transfer of the assets and certain liabilities associated with our Gulfstream G650 wing supply chain activities. Additionally, in the year ended March 31, 2021, we entered into definitive agreements to sell the composites manufacturing operations located in Milledgeville, Georgia, and Rayong, Thailand, as well as our manufacturing operations located in Red Oak, Texas. These transactions closed subsequent to March 31, 2021, and we received net proceeds of approximately $155.0 million. We intend to use approximately $120.0 million of the net proceeds to redeem approximately $113.0 million aggregate principal amount of the First Lien Notes at a redemption price of 106.656%, plus accrued and unpaid interest. These divestiture transactions represent progress on our transition to focusing on our businesses within the Systems & Support operating segment. Refer to the accompanying consolidated financial statements and related notes for descriptions of other material matters occurring in the year ended March 31, 2021.

Available Information For more information about us, visit our website at www.triumphgroup.com. The contents of the website are not part of this Annual Report on Form 10-K. Our electronic filings with the Securities and Exchange Commission ("SEC") (including all Forms 10-K, 10-Q and 8-K, and any amendments to these reports) are available free of charge through our website as soon as reasonably practicable after we electronically file with or furnish them to the SEC. The SEC maintains an internet site that contains reports, proxy and information statements, and other information regarding issuers who file electronically with the SEC at www.sec.gov. In addition, electronic copies of the Company’s SEC filings will be made available, free of charge, on written request.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Item 1A. Risk Factors Strategic Risks Strategic risk relates to our future business plans and strategies, including the risks associated with the global macro- environment; competitive threats; the demand for our products and services; the success of our investments in technology and innovation; our portfolio of businesses and capital allocation decisions; dispositions, acquisitions, joint ventures, and restructuring activity; intellectual property; and other risks. Factors that have an adverse impact on the aerospace industry may adversely affect our results of operations and liquidity. A substantial percentage of our gross profit and operating results derive from commercial aviation. Our operations have been focused on designing, engineering, manufacturing, repairing and overhauling a broad portfolio of aircraft components, accessories, subassemblies, systems, and aerostructures. Therefore, our business is directly affected by economic factors and other trends that affect our customers in the aerospace industry, including a possible decrease in outsourcing by OEMs and aircraft operators or projected market growth that may not materialize or be sustainable. We are also significantly dependent on sales to the commercial aerospace market, which has been cyclical in nature with significant downturns in the past. When these economic and other factors adversely affect the aerospace industry, they tend to reduce the overall customer demand for our products and services, which decreases our operating income. Economic and other factors that might affect the aerospace industry may have an adverse impact on our results of operations and liquidity. We have credit exposure to a number of commercial airlines, some of which have encountered severe financial difficulties. Some airlines are currently requesting federal assistance and there can be no assurance that they will receive such assistance in the desired amounts, if at all. In addition, an increase in energy costs and the price of fuel to the airlines could result in additional pressure on the operating costs of airlines. The market for jet fuel is inherently volatile and is subject to, among other things, changes in government policy on jet fuel production, fluctuations in the global supply of crude oil and disruptions in oil production or delivery caused by hostility in oil-producing areas. Airlines are sometimes unable to pass on increases in fuel prices to customers by increasing fares due to the competitive nature of the airline industry, and this compounds the pressure on operating costs. Other events of general impact such as natural disasters, pandemics, war, terrorist attacks affecting the industry or pandemic health crises may lead to declines in the worldwide aerospace industry that could adversely affect our business and financial condition. In addition, demand for our maintenance, repair and overhaul services is strongly correlated with worldwide flying activity. A significant portion of the MRO activity required on commercial aircraft is mandated by government regulations that limit the total time or number of flights that may elapse between scheduled MRO events. As a result, although short-term deferrals are possible, MRO activity is ultimately required to continue to operate the aircraft in revenue-producing service. Therefore, over the intermediate and long term, trends in the MRO market are closely related to the size and utilization level of the worldwide aircraft fleet, as reflected by the number of available seat miles, commonly referred to as ASMs, and cargo-ton miles flown. Consequently, conditions or events that contribute to declines in worldwide ASMs and cargo miles flown, such as those mentioned above, could negatively impact our MRO business.

The effects of the COVID-19 pandemic and other potential future public health crises, epidemics, pandemics or similar events on our business, operating results and cash flows are uncertain. The global outbreak of the coronavirus disease 2019 (“COVID-19”) was declared a pandemic by the World Health Organization and a national emergency by the U.S. Government in March 2020 and has negatively affected the U.S. and global economy; disrupted global supply chains; resulted in significant travel and transport restrictions, including mandated closures and orders to “shelter-in-place”; and created significant disruption of the financial markets. COVID-19 has already impacted the demand for our products and services. The extent of the continued impact of the COVID-19 pandemic on our operational and financial performance, including our ability to execute our programs in the expected time frame, will depend on future developments, including the duration and spread of the pandemic and related actions taken by the U.S. Government, state and local government officials, and international governments to prevent disease spread, all of which are uncertain and cannot be predicted. In accordance with the U.S. Department of Defense guidance issued in March 2020 designating the Defense Industrial Base as a critical infrastructure workforce, our U.S. production facilities have continued to operate in support of essential products and services required to meet national security commitments to the U.S. Government and the U.S. military, however, facility closures or work slowdowns or temporary stoppages could occur. In addition, other countries have different practices and policies that can affect our international operations and the operations of our suppliers and customers. For example, we had a brief pause in operations located in Mexico in observance of local COVID-19 policies and additional

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document closures could occur, and we are also seeing impacts from travel restrictions both within and outside the U.S. In some cases, facilities are not operating under full staffing as a result of the impact of COVID-19 on or our customers, which could have a longer-term impact.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document If significant portions of our workforce are unable to work effectively, including because of illness, quarantines, absenteeism, government actions, facility closures, travel restrictions, or other restrictions in connection with the COVID-19 pandemic, our operations will be impacted. We may be unable to perform fully on our contracts and our costs may increase as a result of the COVID-19 outbreak. These cost increases, including costs for employees whose jobs cannot be performed remotely, may not be fully recoverable under our contracts, particularly fixed-price contracts, or adequately covered by insurance. The impact of COVID-19 could worsen if there is an extended duration of any COVID-19 outbreak or a resurgence of COVID-19 infection in affected regions after they have begun to experience improvement. We have also incurred increased costs as part of the measures that we have taken to ensure the health and well-being of our employees. The continued spread of COVID-19 has also led to disruption and volatility in the global capital markets, which depending on future developments could impact our capital resources and liquidity in the future. We are also monitoring the impacts of COVID-19 on the fair value of our assets. In the fourth quarter of fiscal 2020, we recognized an impairment of goodwill within the Systems & Support reportable segment that was largely due to the impact of the COVID-19 pandemic on global capital markets as well as certain of the MRO operations within that segment. We cannot assure you that we will not experience future changes in expectations for sales, earnings and cash flows related to intangible assets and goodwill below our current projections, which could result in additional impairment changes. To the extent the COVID-19 pandemic adversely affects our business and financial results, it may also have the effect of heightening many of the other risk factors described in this “Risk Factors” section, such as those relating to our level of indebtedness, results of operations and cash flows.

Changes in levels of U.S. Government defense spending or overall acquisition priorities could negatively impact our financial position and results of operations. We derive a significant portion of our revenue from the U.S. Government, primarily from defense-related programs with the U.S. Department of Defense ("U.S. DoD"). Levels of U.S. defense spending are very difficult to predict and may be impacted by numerous factors such as the political environment, U.S. foreign policy, macroeconomic conditions and the ability of the U.S. Government to enact relevant legislation such as authorization and appropriations bills. In addition, significant budgetary delays and constraints have already resulted in reduced spending levels, and additional reductions may be forthcoming. The Budget Control Act of 2011 established limits on U.S. Government discretionary spending, including a reduction of defense spending between the 2012 and 2021 U.S. Government fiscal years. Accordingly, long-term uncertainty remains with respect to overall levels of defense spending and it is likely that U.S. Government discretionary spending levels will continue to be subject to pressure. In addition, there continues to be significant uncertainty with respect to program-level appropriations for the U.S. DoD and other government agencies within the overall budgetary framework described above. While the House and Senate Appropriations committees included funding for major military programs in fiscal year 2020, such as CH-47 Chinook, AH-64 Apache, KC-46A Tanker, UH-60 Black Hawk, Northrop Grumman Global Hawk and V-22 Osprey programs, uncertainty remains about how defense budgets in fiscal year 2021 and beyond will affect these programs. Future budget cuts, including cuts mandated by sequestration, or future procurement decisions associated with the authorizations and appropriations process could result in reductions, cancellations, and/or delays of existing contracts or programs. Any of these impacts could have a material effect on the results of our operations, financial position and/or cash flows. In addition, as a result of the significant ongoing uncertainty with respect to both U.S. defense spending levels and the nature of the threat environment, we expect the U.S. DoD to continue to emphasize cost-cutting and other efficiency initiatives in its procurement processes. If we can no longer adjust successfully to these changing acquisition priorities and/ or fail to meet affordability targets set by the U.S. DoD customer, our revenues and market share would be further impacted.

The profitability of certain development and production programs depends significantly on the assumptions surrounding satisfactory settlement of claims and assertions. For certain of our new development programs, we regularly commence work or incorporate customer-requested changes prior to negotiating pricing terms for engineering work or the product which has been modified. We typically have the legal right to negotiate pricing for customer-directed changes. In those cases, we assert to our customers our contractual rights to obtain the additional revenue or cost reimbursement we expect to receive upon finalizing pricing terms. An expected recovery value of these assertions is incorporated into our contract profitability estimates when applying contract accounting. Our inability to recover these expected values, among other factors, could result in the recognition of a forward loss on these programs or a lower than expected profit margin and could have a material adverse effect on our results of operations. In addition, negotiations over our claims may lead to disputes with our customers that would result in litigation

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document and its associated costs and risks of damages, penalties and injunctive relief, any of which could have a material, adverse effect on our business and results of operations.

We incur risk associated with new programs with new technologies. New programs with new technologies typically carry risks associated with design responsibility, development of new production tools, hiring and training of qualified personnel, increased capital and funding commitments, ability to meet customer specifications, delivery schedules and unique contractual requirements, supplier performance, subcontractor performance, ability of the customer

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document to meet its contractual obligations to us, and our ability to accurately estimate costs associated with such programs. In addition, any new aircraft program may not generate sufficient demand or may experience technological problems or significant delays in the regulatory certification or manufacturing and delivery schedule. If we were unable to perform our obligations under new programs to the customer's satisfaction or manufacture products at our estimated costs, if we were to experience unexpected fluctuations in raw material prices or supplier problems leading to cost overruns, if we were unable to successfully perform under revised design and manufacturing plans or successfully and equitably resolve claims and assertions, or if a new program in which we had made a significant investment was terminated or experienced weak demand, delays or technological problems, our business, financial condition and results of operations could be materially adversely affected. This risk includes the potential for default, quality problems, or inability to meet weight requirements and could result in low margin or forward loss contracts, and the risk of having to write-off inventory or contract assets if they were deemed to be unrecoverable over the life of the program. In addition, beginning new work on existing programs also carries risks associated with the transfer of technology, knowledge and tooling. In order to perform on new programs, we may be required to construct or acquire new facilities requiring additional up-front investment costs. In the case of significant program delays and/or program cancellations, we could be required to bear certain unrecoverable construction and maintenance costs and incur potential impairment charges for the new facilities. Also, we may need to expend additional resources to determine an alternate revenue generating use for the facilities. Likewise, significant delays in the construction or acquisition of a plant site could impact production schedules.

Cancellations, reductions or delays in customer orders, or new orders under existing forward loss contracts, may adversely affect our results of operations. Our overall operating results are affected by many factors, including the timing of orders from large customers and the timing of expenditures to manufacture parts and purchase inventory in anticipation of future sales of products and services. A large portion of our operating expenses are relatively fixed. Because several of our operating locations typically do not obtain long-term purchase orders or commitments from our customers, they must anticipate the future volume of orders based upon the historic purchasing patterns of customers and upon our discussions with customers as to their anticipated future requirements. These historic patterns may be disrupted by many factors, including changing economic conditions, inventory adjustments, or work stoppages or labor disruptions at our customers' locations. Cancellations, reductions or delays in orders by a customer or group of customers could have a material adverse effect on our business, financial condition, and results of operations. Additionally, new orders submitted under long-term contracts that have been determined to be forward loss contracts may result in significant forward loss accruals immediately upon receipt of the new order and have a material adverse effect on our business, financial condition, and results of operations.

A significant decline in business with a key customer could have a material adverse effect on us. As disclosed in Note 19, a significant portion of our net sales are to Boeing. As a result, a significant reduction in purchases by Boeing could have a material adverse impact on our financial condition, results of operations, and cash flows. In addition, some of our individual companies rely significantly on particular customers, the loss of which could have an adverse effect on those businesses.

Competitive pressures may adversely affect us. We have numerous competitors in the aerospace industry. We compete primarily with the top-tier systems integrators and the manufacturers that supply them, some of which are divisions or subsidiaries of OEMs and other large companies that manufacture aircraft components and subassemblies. Our OEM competitors, which include Boeing, Airbus, Bell Helicopter, Bombardier, Cessna, General Electric, Gulfstream, Honeywell, Lockheed Martin, Northrop Grumman, Raytheon, Rolls Royce and Sikorsky, may choose not to outsource production of systems, subsystems, components, or aerostructures due to, among other things, a desire to vertically integrate direct labor and overhead considerations, capacity utilization at their own facilities, or a desire to retain critical or core skills. Consequently, traditional factors affecting competition, such as price and quality of service, may not be significant determinants when OEMs decide whether to produce a part in-house or to outsource. We also face competition from non-OEM component manufacturers, including Parker, Eaton, Honeywell, Transdigm, and UTC Aerospace Systems. Competition for the repair and overhaul of aviation components comes from three primary sources: OEMs, major commercial airlines and other independent repair and overhaul companies.

We may need to expend significant capital to keep pace with technological developments in our industry. The aerospace industry is constantly undergoing development and change, and it is likely that new products, equipment, and methods of repair and overhaul service will be introduced in the future. In order to keep pace with any new

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document developments, such as additive technology, we may need to expend significant capital to purchase new equipment and machines or to train our employees in the new methods of production and service. As a result of the current impact of COVID-19, we cannot assure you whether we will need to allocate resources for other purposes.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document We may not realize our anticipated return on capital commitments made to expand our capabilities. We continually make significant capital expenditures to implement new processes and to increase both efficiency and capacity. Some of these projects require additional training for our employees and not all projects may be implemented as anticipated. If any of these projects do not achieve the anticipated increase in efficiency or capacity, our returns on these capital expenditures may be lower than expected.

We may not be successful in achieving expected operating efficiencies and sustaining or improving operating expense reductions, and may experience business disruptions associated with restructuring, facility consolidations, realignment, cost reduction and other strategic initiatives. Over the past several years, we have implemented a number of restructuring, realignment and cost-reduction initiatives, including facility consolidations, organizational realignments and reductions in our workforce. While we have realized some efficiencies from these actions, we may not realize the benefits of these initiatives to the extent we anticipated. Further, such benefits may be realized later than expected, and the ongoing difficulties in implementing these measures may be greater than anticipated, which could cause us to incur additional costs or result in business disruptions. In addition, if these measures are not successful or sustainable, we may be compelled to undertake additional realignment and cost-reduction efforts, which could result in significant additional charges. Moreover, if our restructuring and realignment efforts prove ineffective, our ability to achieve our other strategic and business plan goals may be adversely affected. The continued impact of the COVID-19 pandemic could also make it more difficult to realize the benefits and synergies of our actions. We generally do not have the ability to pass on additional costs as a result of the COVID-19 pandemic to our customers under fixed-price contracts.

We do not own certain intellectual property and tooling that is important to our business. In our overhaul and repair businesses, OEMs of equipment that we maintain for our customers include language in repair manuals relating to their equipment asserting broad claims of proprietary rights to the contents of the manuals used in our operations. Although we believe that our use of manufacture and repair manuals is lawful, there can be no assurance that OEMs will not try to enforce such claims, including through the possible use of legal proceedings, or that any such actions will be unsuccessful. Our business also depends on using certain intellectual property and tooling that we have rights to use pursuant to license grants under our contracts with our OEM customers. These contracts contain restrictions on our use of the intellectual property and tooling and may be terminated if we violate certain of these restrictions. Our loss of a contract with an OEM customer and the related license rights to use an OEM's intellectual property or tooling would materially adversely affect our business.

Operational Risks Operational risk relates to risks arising from systems, processes, people, and external events that affect the operation of our businesses. It includes risks related to product and service life cycle and execution; product safety and performance; information management and data protection and security, including cybersecurity; and supply chain and business disruption.

Our business could be negatively affected by cyber or other security threats or other disruptions. Our businesses depend heavily on information technology and computerized systems to communicate and operate effectively. Our systems and technologies, or those of third parties on which we rely, could fail or become unreliable due to equipment failures, software viruses, cyber threats, terrorist acts, natural disasters, power failures or other causes. These threats arise in some cases as a result of our role as a defense contractor. Our customers, including the U.S. Government, are increasingly requiring cybersecurity protections and mandating cybersecurity standards in our products, and we may incur additional cost to comply with such demands. Cybersecurity threats are evolving and include, but are not limited to, malicious software; ransomware; attempts to gain unauthorized access to our sensitive information, including that of our customers, suppliers, subcontractors, and joint venture partners; and other electronic security breaches that could lead to disruptions in mission critical systems, unauthorized release of confidential or otherwise protected information and corruption of data. Although we utilize various procedures and controls to monitor and mitigate these threats, there can be no assurance that these procedures and controls will be sufficient to prevent security threats from materializing. If any of these events were to

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document materialize, the costs related to cyber or other security threats or disruptions may not be fully insured or indemnified and could have a material adverse effect on our reputation, operating results and financial condition.

Any significant disruption from key suppliers of raw materials and key components could delay production and decrease revenue. We are highly dependent on the availability of essential raw materials such as carbon fiber, aluminum and titanium, and purchased engineered component parts from our suppliers, many of which are available only from single customer- approved sources. Moreover, we are dependent upon the ability of our suppliers to provide raw materials and components that meet our

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document specifications, quality standards and delivery schedules. Our suppliers' failure to provide expected raw materials or component parts could require us to identify and enter into contracts with alternate suppliers that are acceptable to both us and our customers, which could result in significant delays, expenses, increased costs, and management distraction and adversely affect production schedules and contract profitability. We have from time to time experienced limited interruptions of supply, and we may experience a significant interruption in the future. Our continued supply of raw materials and component parts is subject to a number of risks, including: • availability of capital to our suppliers; • the destruction of our suppliers' facilities or their distribution infrastructure; • a work stoppage or strike by our suppliers' employees; • the failure of our suppliers to provide raw materials or component parts of the requisite quality; • the failure of essential equipment at our suppliers' plants; • the failure or shortage of supply of raw materials to our suppliers; • contractual amendments and disputes with our suppliers; • reduction to credit terms; and • geopolitical conditions in the global supply base. In addition, some contracts with our suppliers for raw materials, component parts and other goods are short-term contracts, which are subject to termination on a relatively short-term basis. The prices of our raw materials and component parts fluctuate depending on market conditions, and substantial increases in prices could increase our operating costs, which, as a result of our fixed-price contracts, we may not be able to recoup through increases in the prices of our products. Due to economic difficulty, we may face pressure to renegotiate agreements resulting in lower margins. Our suppliers may discontinue provision of products to us at attractive prices or at all, and we may not be able to obtain such products in the future from these or other providers on the scale and within the time periods we require. Furthermore, substitute raw materials or component parts may not meet the strict specifications and quality standards we and our customers demand, or that the U.S. Government requires. If we are not able to obtain key products on a timely basis and at an affordable cost, or we experience significant delays or interruptions of their supply, revenues from sales of products that use these supplies will decrease. The current impact of the COVID-19 pandemic could also result in a larger period of time to find suitable replacements.

Significant consolidation by aerospace industry suppliers could adversely affect our business. The aerospace industry continues to experience consolidation among suppliers and customers, primarily as it pertains to the airlines. Suppliers have consolidated and formed alliances to broaden their product and integrated system offerings and achieve critical mass. This supplier consolidation is in part attributable to aircraft manufacturers more frequently awarding long-term sole-source or preferred supplier contracts to the most capable suppliers, thus reducing the total number of suppliers. This consolidation could cause us to compete against certain competitors with greater financial resources, market penetration and purchasing power. When we purchase component parts and services from suppliers to manufacture our products, consolidation reduces price competition between our suppliers, which could diminish incentives for our suppliers to reduce prices. If this consolidation continues, our operating costs could increase, and it may become more difficult for us to be successful in obtaining new customers. The COVID-19 pandemic has also put considerable pressure on suppliers, which could exacerbate this consolidation.

Our business could be materially adversely affected by product warranty obligations. Our operations expose us to potential liability for warranty claims made by customers or third parties with respect to aircraft components that have been designed, manufactured, or serviced by us or our suppliers. Material product warranty obligations could have a material adverse effect on our business, financial condition and results of operations.

Any product liability claims in excess of insurance may adversely affect our financial condition. Our operations expose us to potential liability for personal injury or death as a result of the failure of an aircraft component that has been serviced by us or the failure of an aircraft component designed or manufactured by us. While we believe that our liability insurance is adequate to protect us from these liabilities, our insurance may not cover all liabilities. Additionally, should insurance market conditions change, general aviation product liability, insurance coverage may not be available in the future at a cost acceptable to us. Any material liability not covered by insurance or for which third-party indemnification is not available could have a material adverse effect on our financial condition.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The lack of available skilled personnel may have an adverse effect on our operations. From time to time, some of our operating locations have experienced difficulties in attracting and retaining skilled personnel to design, engineer, manufacture, repair and overhaul sophisticated aircraft components. Our ability to operate successfully could be jeopardized if we are unable to attract and retain a sufficient number of skilled personnel to conduct our business.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Our fixed-price contracts may commit us to unfavorable terms. A significant portion of our net sales are derived from fixed-price contracts under which we have agreed to provide components or aerostructures for a price determined on the date we entered into the contract. Several factors may cause the costs we incur in fulfilling these contracts to vary substantially from our original estimates, and we bear the risk that increased or unexpected costs may reduce our profit or cause us to sustain losses on these contracts. In a fixed-price contract, we may be required to fully absorb cost overruns, notwithstanding the difficulty of estimating all of the costs we will incur in performing these contracts. Because our ability to terminate contracts is generally limited, we may not be able to terminate our performance requirements under these contracts at all or without substantial liability and, therefore, in the event we are sustaining reduced profits or losses, we could continue to sustain these reduced profits or losses for the duration of the contract term. Our failure to anticipate technical problems, estimate delivery reductions, estimate costs accurately or control costs during performance of a fixed-price contract may reduce our profitability or cause significant losses on programs.

Due to the size and long-term nature of many of our contracts, we are required by GAAP to estimate sales and expenses relating to these contracts in our financial statements, which may cause actual results to differ materially from those estimated under different assumptions or conditions. Our consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States ("GAAP"). These principles require our management to make estimates and assumptions regarding our contracts that affect the reported amounts of revenue and expenses during the reporting period. Accounting for revenue recognized over time requires judgment relative to assessing risks, estimating contract sales and costs, and making assumptions for schedule and technical issues. Due to the size and nature of many of our contracts, the estimation of total sales and cost at completion is complicated and subject to many variables. While we base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances at the time made, actual results may differ materially from those estimated.

Our operations depend on our manufacturing facilities, which are subject to physical and other risks that could disrupt production. Our manufacturing facilities or our customers' facilities could be damaged or disrupted by a natural disaster, war, or terrorist activity. We maintain property damage and business interruption insurance at the levels typical in our industry or for our customers and suppliers, however, a pandemic or other major catastrophe, such as an earthquake, hurricane, fire, flood, tornado or other natural disaster at any of our sites, or war or terrorist activities in any of the areas where we conduct operations could result in a prolonged interruption of our business. Any disruption resulting from these events could cause significant delays in shipments of products and the loss of sales and customers, and we may not have insurance to adequately compensate us for any of these events. For leased facilities, timely renewal of leases and risk mitigation from the sale of our leased facilities is required to avoid any business interruption.

We may be subject to work stoppages at our facilities or those of our principal customers and suppliers, which could seriously impact the profitability of our business. Our unionized workforces and those of our customers and suppliers may experience work stoppages during collective bargaining agreement negotiations. If we are unable to negotiate a contract with those workforces, our operations may be disrupted, and we may be prevented from completing production and delivery of products from those facilities, which would negatively impact our results. Contingency plans have been developed that would allow production to continue in the event of a strike.

Financial Risks Financial risk relates to our ability to meet financial obligations and mitigate exposure to broad market risks, including funding and liquidity risks, such as risk related to our credit ratings and our availability and cost of funding; credit risk; and volatility in foreign currency exchange rates, interest rates, and commodity prices. Liquidity risk refers to the potential inability to meet contractual or contingent financial obligations (whether on- or off-balance sheet) as they arise and could potentially impact our financial condition or overall safety and soundness. Credit risk is the risk of financial loss arising from a customer or counterparty failure to meet its contractual obligations to us.

Our substantial debt could adversely affect our financial condition and our ability to operate and grow our business. The terms of our indentures governing our Senior Notes impose significant operating and financial

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document restrictions on us and our subsidiaries, which could also adversely affect our operating flexibility and put us at a competitive disadvantage by preventing us from capitalizing on business opportunities and additional financing may not be available on terms acceptable to us. The terms of our indentures governing our Senior Notes and Securitization Facility (each as defined in Note 10) impose significant operating and financial restrictions on us, which limit our ability to incur liens, sell assets and enter into certain transactions, among

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document other things. In addition, our debt documents require us to comply with various financial and other covenants set forth in the related agreement. We are in compliance with all of our debt covenants. We cannot assure you that we will be able to maintain compliance with the covenants in the agreements governing our indebtedness in the future or, if we fail to do so, that we will be able to obtain waivers from the holders of such indebtedness or amend the covenants and other terms of the agreements governing such indebtedness on commercially reasonable terms, if at all. Failure to maintain compliance with these covenants may allow the holders of such indebtedness to require immediate repayment of the indebtedness owed to them and to terminate any unfunded commitments, which could have a material adverse effect on our operations. We may periodically need to obtain additional financing in order to meet our debt obligations as they come due, to support our operations and/or to make acquisitions. Our access to the debt capital markets and the cost of borrowings are affected by a number of factors, including market conditions and the strength of our credit ratings and the impact of the COVID-19 pandemic on our markets. If we cannot obtain adequate sources of credit on favorable terms, or at all, our business, operating results, and financial condition could be adversely affected. We may also seek transactions to extend the maturity of our debt, reduce leverage or obtain covenant flexibility. Such transactions could result in us incurring additional secured debt or equity and there can be no assurance that we will be successful in these endeavors.

Volatility in the financial markets may impede our ability to successfully access capital markets and ensure adequate liquidity and may adversely affect our customers and suppliers. Turmoil in the capital markets may impede our ability to access the capital markets when we would like, or need, to raise capital or may restrict our ability to borrow money on favorable terms. Such market conditions could have an adverse impact on our flexibility to react to changing economic and business conditions and on our ability to fund our operations and capital expenditures in the future. In addition, interest rate fluctuations, financial market volatility, or credit market disruptions may also negatively affect our customers' and our suppliers' ability to obtain credit to finance their businesses on acceptable terms. As a result, our customers' need for and ability to purchase our products or services may decrease, and our suppliers may increase their prices, reduce their output or change their terms of sale. If our customers' or suppliers' operating and financial performance deteriorates, or if they are unable to make scheduled payments or obtain credit, our customers may not be able to pay, or may delay payment of, accounts receivable owed to us, and our suppliers may restrict credit or impose different payment terms. Any inability of customers to pay us for our products and services or any demands by suppliers for different payment terms may adversely affect our earnings and cash flow.

Our expansion into international markets may increase credit, currency and other risks, and our current operations in international markets expose us to such risks. As we pursue customers in Asia, South America and other less developed aerospace markets throughout the world, our inability to ensure the creditworthiness of our customers in these areas could adversely impact our overall profitability. In addition, with operations in China, France, Germany, Ireland, Mexico, Thailand and the United Kingdom, and customers throughout the world, we are subject to the legal, political, social and regulatory requirements, and economic conditions of other jurisdictions. In the future, we may also make additional international capital investments, including further acquisitions of companies outside the United States or companies having operations outside the United States. Risks inherent to international operations include, but are not limited to, the following: • difficulty in enforcing agreements in some legal systems outside the United States; • imposition of additional withholding taxes or other taxes on our foreign income, tariffs or other restrictions on foreign trade and investment, including currency exchange controls; • fluctuations in exchange rates which may affect demand for our products and services and may adversely affect our profitability in U.S. dollars; • inability to obtain, maintain or enforce intellectual property rights; • changes in general economic and political conditions in the countries in which we operate; • unexpected adverse changes in the laws or regulatory requirements outside the United States, including those with respect to environmental protection, export duties and quotas; • failure by our employees or agents to comply with U.S. laws affecting the activities of U.S. companies abroad; • difficulty with staffing and managing widespread operations; and • difficulty of and costs relating to compliance with the different commercial and legal requirements of the countries in which we operate.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Financial market conditions may adversely affect the benefit plan assets for our defined benefit plans, increase funding requirements and materially impact our statements of financial position and cash flows. Our benefit plan assets are invested in a diversified portfolio of investments in both the equity and debt categories, as well as limited investments in other alternative investments. The current market values of all of these investments, as well as the related benefit plan liabilities are impacted by the movements and volatility in the financial markets. In accordance with the Compensation—Retirement Benefits topic of the Accounting Standards Codification ("ASC"), we have recognized the overfunded or underfunded status of a defined benefit postretirement plan as an asset or liability on our balance sheet, and will recognize changes in that funded status in the year in which the changes occur. The funded status is measured as the difference between the fair value of the plan's assets and the projected benefit obligation. A decrease in the fair value of these plan assets or a decrease in interest rates resulting from movements in the financial markets will increase the underfunded status of the plans recorded on our consolidated balance sheets and result in additional cash funding requirements to meet the minimum required funding levels.

Legal & Compliance Risks Legal and compliance risk relates to risks arising from the government and regulatory environment and action and from legal proceedings and compliance with integrity policies and procedures, including those relating to financial reporting and environmental, health, and safety matters. Government and regulatory risk includes the risk that the government or regulatory actions will impose additional cost on us or require us to make adverse changes to our business models or practices.

Our international sales and operations are subject to applicable laws relating to trade, export controls and foreign corrupt practices, the violation of which could adversely affect our operations. We must comply with all applicable export control laws and regulations of the United States and other countries. United States laws and regulations applicable to us include the Arms Export Control Act, the International Traffic in Arms Regulations ("ITAR"), the Export Administration Regulations ("EAR"), and the trade sanctions laws and regulations administered by the United States Department of the Treasury's Office of Foreign Assets Control ("OFAC"). EAR restricts the export of dual-use products and technical data to certain countries, while ITAR restricts the export of defense products, technical data and defense services. The U.S. Government agencies responsible for administering EAR and ITAR have significant discretion in the interpretation and enforcement of these regulations. We cannot provide services to certain countries subject to United States trade sanctions unless we first obtain the necessary authorizations from OFAC. In addition, we are subject to the Foreign Corrupt Practices Act, which generally bars bribes or unreasonable gifts to foreign governments or officials. Violations of these laws or regulations could result in significant additional sanctions, including fines, more onerous compliance requirements, more extensive debarments from export privileges, loss of authorizations needed to conduct aspects of our international business, and criminal penalties and may harm our ability to enter into contracts with the U.S. Government. A future violation of ITAR or the other regulations enumerated above could materially adversely affect our business, financial condition and results of operations.

The construction of aircraft is heavily regulated, and failure to comply with applicable laws could reduce our sales or require us to incur additional costs to achieve compliance, and we may incur significant expenses to comply with new or more stringent governmental regulation. The aerospace industry is highly regulated in the United States by the FAA and in other countries by similar agencies. We must be certified by the FAA and, in some cases, by individual OEMs in order to engineer and service parts, components and aerostructures used in specific aircraft models. If any of our material authorizations or approvals were revoked or suspended, our operations would be adversely affected. New or more stringent governmental regulations may be adopted, or industry oversight heightened in the future, and we may incur significant expenses to comply with any new regulations or any heightened industry oversight.

Any exposure to environmental liabilities may adversely affect us. Our business, operations and facilities are subject to numerous stringent federal, state, local, and foreign environmental laws and regulations, and we are subject to potentially significant fines or penalties, including criminal sanctions, if we fail to comply with these requirements. In addition, we could be affected by future laws and regulations, including those imposed in response to climate change concerns and other actions commonly referred to as "green initiatives." Compliance with

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document current and future environmental laws and regulations currently requires, and is expected to continue to require, significant operating and capital costs. Pursuant to certain environmental laws, a current or previous owner or operator of a contaminated site may be held liable for the entire cost of investigation, removal or remediation of hazardous materials at such property. Innocent Landowner Regulations require an Environmental Site Assessment prior to acquisition to prevent unknowingly acquiring impaired property. Once identified, if the transaction continues, the impairment is not covered by insurance. Although management believes that our operations and facilities are in material compliance with such laws and regulations, future changes in such laws, regulations, or interpretations

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document thereof or the nature of our operations or regulatory enforcement actions, which may arise, may require us to make significant additional capital expenditures to ensure compliance in the future. Certain of our facilities, including facilities acquired and operated by us or one of our subsidiaries, have at one time or another been under active investigation for environmental contamination by federal or state agencies when acquired and, at least in some cases, continue to be under investigation or subject to remediation. Lawsuits, claims and costs involving environmental matters may arise in the future. Individual facilities of ours have also been subject to investigation on occasion for possible past waste disposal practices which might have contributed to contamination at or from remote third-party waste disposal sites. In some instances, we are indemnified by prior owners or operators and/or present owners of the facilities for liabilities that we incur as a result of these investigations and the environmental contamination found that predates our acquisition of these facilities, subject to certain limitations, including, but not limited to, specified exclusions, deductibles and limitations on the survival period of the indemnity. We also maintain a pollution liability policy that provides coverage, subject to specified limitations, for specified material liabilities associated with the cleanup of certain on-site pollution conditions, as well as defense and indemnity for certain third-party suits (including Superfund liabilities at third-party sites), in each case, to the extent not otherwise indemnified. Also, as we proceed with our plans to exit certain facilities as part of restructuring and related initiatives, the need for remediation for potential environmental contamination could be identified. However, if we are required to pay the expenses related to environmental liabilities because neither indemnification nor insurance coverage is available, these expenses could have a material adverse effect on our financial position, results of operations, and cash flows.

We could become involved in intellectual property litigation, which could have a material and adverse impact on our profitability. We and other companies in our industry possess certain proprietary rights relating to designs, engineering, manufacturing processes, and repair and overhaul procedures. In the event that we believe that a third party is infringing upon our proprietary rights, we may bring an action to enforce such rights. In addition, third parties may claim infringement by us with respect to their proprietary rights and may initiate legal proceedings against us in the future. The expense and time of bringing an action to enforce such rights or defending against infringement claims can be significant. Intellectual property litigation involves complex legal and factual questions, which makes the outcome of any such proceedings subject to considerable uncertainty. Not only can such litigation divert management's attention, but it can also expose us to damages and potential injunctive relief, which, if granted, may preclude us from making, using, or selling particular products or technology. The expense and time associated with such litigation may have a material and adverse impact on our profitability.

Our reputation; our ability to do business; and our financial position, results of operations, and/or cash flows may be impacted by the improper conduct of employees, agents, subcontractors, suppliers, business partners or joint ventures in which we participate. We have implemented policies, procedures, training, and other compliance controls and have negotiated terms designed to prevent misconduct by employees, agents, or others working on our behalf or with us that would violate the applicable laws of the jurisdictions in which we operate, including laws governing improper payments to government officials, the protection of export controlled or classified information, cost accounting and billing, competition and data privacy. However, we cannot ensure that we will prevent all such misconduct committed by our employees, agents, subcontractors, suppliers, business partners, or others working on our behalf or with us, and this risk of improper conduct may increase as we expand globally. In the ordinary course of our business, we form and are members of joint ventures. We may be unable to prevent misconduct or other violations of applicable laws by these joint ventures (including their officers, directors and employees) or our partners. Improper actions by those with whom or through whom we do business (including our employees, agents, subcontractors, suppliers, business partners and joint ventures) could subject us to administrative, civil or criminal investigations and monetary and non-monetary penalties, including suspension and debarment, which could negatively impact our reputation and ability to conduct business and could have a material adverse effect on our financial position, results of operations and/or cash flows.

The U.S. Government is a significant customer of our largest customers, and we and they are subject to specific U.S. Government contracting rules and regulations. The military aircraft manufacturers' business, and by extension, our business, is affected by the U.S. Government's continued commitment to programs under contract with our customers. The terms of defense contracts with the U.S. Government generally permit the government to terminate contracts partially or completely, either for its convenience or if we default by failing to perform under the contract. Termination for convenience provisions provide only for our recovery of unrecovered costs incurred or committed, settlement expenses and profit on the work completed prior to termination. Termination for default provisions provide for the contractor to be liable for excess costs incurred by the U.S. Government in

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document procuring undelivered items from another source. On contracts where the price is based on cost, the U.S. Government may review our costs and performance, as well as our accounting and general business practices. Based on the results of such audits, the U.S. Government may adjust our contract-related costs and fees, including allocated indirect costs. In addition, under U.S. Government purchasing regulations, some of our costs, including most financing costs, portions of research and development costs, and certain marketing expenses may not be subject to reimbursement. We bear the potential risk that the U.S. Government may unilaterally suspend our customers or us from new contracts pending the resolution of alleged violations of procurement laws or regulations. Sales to the U.S. Government are also subject to changes in the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document government's procurement policies in advance of design completion. An unexpected termination of, or suspension from, a significant government contract, a reduction in expenditures by the U.S. Government for aircraft using our products, lower margins resulting from increasingly competitive procurement policies, a reduction in the volume of contracts awarded to us, or substantial cost overruns could have a material adverse effect on our financial condition, results of operations and cash flows.

We are subject to the requirements of the National Industrial Security Program Operating Manual for facility security clearance, which is a prerequisite for our ability to perform on classified contracts for the U.S. Government. U.S. DoD facility security clearance is required in order to be awarded and be able to perform on classified contracts for the U.S. DoD and certain other agencies of the U.S. Government, which is a significant part of our business. We have obtained clearance at appropriate levels that require stringent qualifications, and we may be required to seek higher level clearances in the future. We cannot assure you that we will be able to maintain our security clearance. If for some reason our security clearance is invalidated or terminated, we may not be able to continue to perform our present classified contracts or be able to enter into new classified contracts, which could affect our ability to compete for and capture new business.

Regulations related to conflict minerals have and will continue to force us to incur additional expenses, may make our supply chain more complex and could adversely impact our business. The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 contains provisions to improve transparency and accountability concerning the supply of certain minerals and metals, known as conflict minerals, originating from the Democratic Republic of Congo (the "DRC") and adjoining countries. As a result, in August 2012, the SEC adopted annual investigation, disclosure and reporting requirements for those companies that manufacture or contract to manufacture products that contain conflict minerals that originated from the DRC and adjoining countries. We have and will continue to incur compliance costs, including costs related to determining the sources of conflict minerals used in our products and other potential changes to processes or sources of supply as a consequence of such verification activities. The implementation of these rules could adversely affect the sourcing, supply and pricing of materials used in certain of our products. As there may be only a limited number of suppliers offering "conflict-free" minerals, we cannot be sure that we will be able to obtain necessary conflict-free minerals from such suppliers in sufficient quantities or at competitive prices. Also, we may face reputational challenges if we determine that certain of our products contain minerals not determined to be conflict-free.

Our business is subject to regulation in the United States and internationally. The manufacturing of our products is subject to numerous federal, state and foreign governmental regulations. The number of laws and regulations that are being enacted or proposed by various governmental bodies and authorities are increasing. Compliance with these regulations is difficult and expensive. If we fail to adhere, or are alleged to have failed to adhere, to any applicable federal, state, or foreign laws or regulations, or if such laws or regulations negatively affect sales of our products, our business, prospects, results of operations, financial condition or cash flows may be adversely affected. In addition, our future results could be adversely affected by changes in applicable federal, state, and foreign laws and regulations, or the interpretation or enforcement thereof, including those relating to manufacturing processes, product liability, government contracts, trade rules and customs regulations, intellectual property, consumer laws, privacy laws, as well as accounting standards and taxation requirements (including tax-rate changes, new tax laws or revised tax law interpretations).

Item 1B. Unresolved Staff Comments None.

Item 2. Properties As of March 31, 2021, our segments owned or leased properties that are material to our operations with the following square footage:

(Square feet in thousands) Owned Leased Total Systems & Support 1,444 563 2,007

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Aerospace Structures 2,420 2,071 4,491 Corporate — 30 30 Total 3,864 2,664 6,528

At March 31, 2021, our segments occupied 61% of the square footage in the table above at the following major locations: • Systems & Support: West Hartford, Connecticut; Park City, Utah; and Hot Springs, Arkansas • Aerospace Structures: Milledgeville, Georgia; Red Oak, Texas; Grand Prairie, Texas; and Stuart, Florida

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document We believe that our properties are adequate to support our operations for the foreseeable future. As disclosed above, subsequent to March 31, 2021, we completed the sale of our manufacturing operations located in Milledgeville, Georgia, and Red Oak, Texas. These facilities will reduce the total square footage of owned and leased property as reflected in the table above by approximately 1.8 million square feet.

Item 3. Legal Proceedings In the ordinary course of business, we are involved in disputes, claims and lawsuits with employees, suppliers and customers, as well as governmental and regulatory inquiries, that are deemed to be immaterial. Some may involve claims or potential claims of substantial damages, fines, penalties or injunctive relief. While we cannot predict the outcome of any pending or future litigation or proceeding and no assurances can be given, we do not believe that any pending matter will have a material effect, individually or in the aggregate, on its financial position or results of operations.

Item 4. Mine Safety Disclosures Not applicable.

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities Our common stock is traded on the New York Stock Exchange under the symbol "TGI." As of May 17, 2021, there were approximately 136 holders of record of our common stock and we believe that our common stock was beneficially owned by approximately 14,000 persons.

Stock Issuances On February 4, 2021, the Company implemented a new “at the market” stock issuance program by entering into an equity distribution agreement (the “Equity Distribution Agreement”) with Citigroup Global Markets Inc. (the “Manager”). Under the terms of the Equity Distribution Agreement, the Company may from time to time to or through the Manager, acting as agent and/or principal, offer and sell shares of its common stock (the “Shares”), par value $0.001 per share (“Common Stock”) having a gross sales price of up to $150.0 million. From the date the program was implemented through March 31, 2021, the Company completed the program, selling 9,178,752 shares with a gross sales price of $150.0 million for total proceeds net of stock issuance costs of $145.4 million. On December 17, 2020, the Company contributed 2,849,002 shares of common stock to the separate pension plan trust with an aggregate contribution value of approximately $40.0 million on the contribution date.

Dividend Policy During fiscal 2021, we made no declaration or payments of dividends due to the March 2020 suspension of our dividend program. This suspension is still in place. In fiscal 2020, we paid cash dividends of $0.16 per share. Our declaration and payment of cash dividends in the future and the amount thereof will depend upon our results of operations, financial condition, cash requirements, future prospects, limitations imposed by credit agreements or indentures governing debt securities and other factors deemed relevant by our Board of Directors. No assurance can be given that cash dividends will be declared and paid at historical levels or at all. Certain of our debt arrangements restrict our paying dividends and making distributions on our capital stock, except for the payment of stock dividends and redemptions of an employee's shares of capital stock upon termination of employment. We currently have an accumulated deficit which could limit or restrict our ability to pay dividends in the future.

Repurchases of Stock In December 1998, we announced a program to repurchase up to 500,000 shares of our common stock. In February 2008, the Company's Board of Directors authorized an increase in the Company's existing stock repurchase program by up to an additional 500,000 shares of its common stock. In February 2014, the Company's Board of Directors authorized an increase in the Company's existing stock repurchase program by up to an additional 5,000,000 shares of its common stock. Though no purchases have been made in recent years, to the extent permitted by documentation governing our indebtedness, repurchases may be made from time to time in open market transactions, block purchases, privately negotiated transactions or otherwise at prevailing prices. No time limit has been set for completion of the program. As of May 20, 2021, the Company remains able to purchase an additional 2,277,789 shares under such program. We currently have an accumulated deficit which, together with certain restrictive covenants imposed by credit agreements or indentures governing debt securities, could limit or restrict our ability to repurchase stock in the future.

Equity Compensation Plan Information The information required regarding equity compensation plan information will be included in our 2021 Proxy Statement in connection with our 2021 Annual Meeting of Stockholders to be held on July 21, 2021, under the heading "Equity Compensation Plan Information" and is incorporated herein by reference.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The following graph compares the cumulative 5-year total return provided stockholders on our common stock relative with the cumulative total returns of the Russell 1000 index, the Russell 2000 index and the S&P Aerospace & Defense index. An investment of $100 (with reinvestment of all dividends) is assumed to have been made in our common stock and in each of the indexes on March 31, 2016, and its relative performance is tracked through March 31, 2021.

COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURN* Among Triumph Group, Inc., and The Russell 1000 and 2000 Indexes And The S&P Aerospace & Defense Index

* $100 invested on March 31, 2016, in stock or index, including reinvestment of dividends.

Fiscal year ended March 31, 2016 2017 2018 2019 2020 2021 Triumph Group, Inc. 100.00 82.23 80.91 61.68 22.04 59.93 Russell 1000 100.00 117.43 133.84 146.29 134.55 216.07 Russell 2000 100.00 126.22 141.10 143.99 109.45 213.26 S&P Aerospace & Defense 100.00 127.20 180.68 180.44 132.85 185.69

The stock price performance included in this graph is not necessarily indicative of future stock price performance.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations The following discussion should be read in conjunction with the consolidated financial statements and notes thereto contained elsewhere herein.

OVERVIEW We are a major supplier to the aerospace industry and have two reportable segments: (i) Systems & Support, whose companies’ revenues are derived from integrated solutions, including design, development and support of proprietary components, subsystems and systems, production of complex assemblies using external designs, as well as full life cycle solutions for commercial, regional and military aircraft; and (ii) Aerospace Structures, whose companies supply commercial, business, regional, and military manufacturers with large metallic and composite structures and produce close-tolerance parts primarily to customer designs and model-based definition, including a wide range of aluminum, hard metal and composite structure capabilities. During the fiscal year ended March 31, 2021, we divested of a number of our assets and operations, including the transfer of the assets and certain liabilities associated with our Gulfstream G650 wing supply chain activities. Additionally, subsequent to March 31, 2021, we completed the sale of our composites manufacturing operations located in Milledgeville, Georgia, and Rayong, Thailand, as well as our manufacturing operations located in Red Oak, Texas. We recognized combined net losses of $104.7 million primarily from these transactions. These losses are presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses, net. The operating results associated with the G650 wing supply chain activities and the composites and other manufacturing operations referred to above were included within Aerospace Structures through the date of transfer and through March 31, 2021, respectively. During the year ended March 31, 2021, these transactions represented, in the aggregate, approximately $266.2 million of the $1.87 billion of consolidated net sales (or approximately 14.2% of consolidated net sales). Significant financial results for the fiscal year ended March 31, 2021, include: • Net sales for fiscal 2021 decreased 35.5% to $1.87 billion. • Operating loss for fiscal 2021 was $326.2 million. • Included in operating loss for fiscal 2021 was loss on sale of assets and businesses of $104.7 million and restructuring charges of $53.2 million. • Net loss for fiscal 2021 was $450.9 million or $8.55 per diluted common share. • Backlog decreased 41.6% over the prior year to $1.9 billion primarily due to the divestitures occurring in and subsequent to the year-ended March 31, 2021, which had backlog of approximately $684.3 million as of March 31, 2020. Our working capital needs are generally funded through cash flows from operations and borrowings under our credit arrangements. For the fiscal year ended March 31, 2021, we used $173.1 million of cash flows in operating activities, used $9.3 million in investing activities, and received $277.2 million from financing activities. Cash flows provided by operating activities in fiscal year 2020 were $96.7 million. We have committed to several plans that incorporated the restructuring of certain of our businesses. As of March 31, 2021, with the exception of two pending facility closures to be completed in fiscal 2022 or 2023, we have substantially completed these plans. During late fiscal 2020, in response to anticipated market headwinds primarily arising from the impact of the COVID-19 pandemic, we committed to new restructuring and cost reduction activities to align capacity with expected demand. These plans and related activities were implemented to generate savings of approximately $120.0 million in fiscal 2021 on a consolidated basis, primarily from headcount and other human resource related cost reductions. We achieved these savings goals for the year ended March 31, 2021. While the long-term outlook for the aerospace industry remains positive due the fundamental drivers of air travel demand, current expectations are that it will take 2-3 years for travel to return to calendar 2019 levels and a few years beyond that for the industry to return to long-term trend growth, although there can be no assurance that such period will not be longer. To balance the supply and demand given the COVID-19 shock and to preserve long-term potential and competitiveness, our customers have decided to reduce the production rates of several of their commercial aircraft programs. These rate decisions were based on assessments of the demand environment. There is uncertainty with respect to how commercial air traffic levels will recover, and whether and at what point capacity will return to and/or exceed pre-COVID-19 pandemic levels. We continue to work with our customers to closely monitor the key factors that affect backlog and future demand

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document including customers’ evolving manufacturing plans, the widebody replacement cycle and the cargo market, but such impact could be material and make it difficult to compare periods. We continue to expect the COVID-19 pandemic to reduce demand for commercial aviation aftermarket due to the recent sharp decreases in flights; as well as reduce demand for commercial aviation production as OEMs have lowered their related delivery rate assumptions. The COVID-19 pandemic related reduction in OEM production rates has resulted in additional costs to produce and deliver our products. While these costs were largely mitigated through our cost reduction initiatives during the year ended March 31, 2021, continued or further cost increases may not be mitigated through additional cost reduction initiatives and could negatively impact earnings and cash flows, particularly with respect to our fixed-price contracts.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document We are unable at this time to reasonably estimate potential future additional financial impacts or a range of loss, if any, due to continued uncertainties related to the impacts of COVID-19 on our operations, supply chain and customers, future changes to OEM production rates, supply chain impacts, and/or the results of negotiations with particular customers. Any such impacts, including any changes in our estimates, could have a material adverse effect on our financial position, results of operations, and/or cash flows. For example, we expect that, in the event that our customers are unable to resume aircraft deliveries consistent with provided assumptions, the continued absence of revenue, earnings, and cash flows associated with those deliveries would continue to have a material impact on our operating results. In the event that future OEM production rate increases occur at a slower rate or take longer than we are currently assuming, we expect that the growth in inventory and other cash flow impacts associated with production would decrease. However, while any prolonged delays in planned OEM production rate increases could mitigate the impact on our liquidity, it could significantly increase the overall expected costs to manufacture our products, which would reduce operating margins and/or increase abnormal production costs in the future. Additionally, the declines in global air travel are expected to result in reduced demand for MRO services and uncertainty exists related to the length of time until air travel returns to historical levels. From fiscal 2015 to fiscal 2019, our Aerospace Structures business unit experienced operating and forward losses on our production of the Boeing 747-8 fuselage for Boeing, Gulfstream G280 wing for Israel Aerospace Industries, Ltd ("IAI") and Gulfstream G650 wing for Gulfstream. Further discussion is included below regarding the significant developments of each program as well as other significant programs.

Boeing 737 MAX The Boeing 737 MAX program represented approximately 3% of revenue for the fiscal year ended March 31, 2021. During the third fiscal quarter of the year ended March 31, 2021, the Federal Aviation Administration and the Agência Nacional de Aviação Civil of Brazil approved the 737 MAX return to flight which was quickly followed by Transport Canada and the European Union Aviation Safety Agency in January 2021. Boeing resumed 737 MAX deliveries in our third fiscal quarter of the year ended March 31, 2021, delivering 27 aircraft. Conditions are expected to improve as COVID-19 vaccination distribution accelerates, and Boeing has projected further 737 MAX rate increases in the latter half of calendar year 2021. The International Air Transport Association has predicted a 55% increase in passengers traveling in 2021 to 2.8 billion passengers. Boeing has predicted that revenue passenger miles will return to 2019 levels in approximately two to three years. Boeing has planned 737 MAX gradual rate increases to 31 per month in early calendar year 2022 with further gradual increases corresponding with market demand. In January, Boeing stated that it has delivered more than 80 737 MAX airplanes since the FAA granted a return to flight and approximately 320 airplanes remain in inventory. Boeing has stated that the balance of 737 MAX airplanes produced during the grounding and included within inventory will be delivered by the close of calendar year 2022. While we expect to see gradual increases in 737 MAX revenue across both of our reportable segments in fiscal year 2022 based on these assumptions, a resurgence of COVID-19 that results in additional delays or shutdowns could degrade this expectation.

Boeing 747-8 As of March 31, 2020, Triumph’s production on this program has completed from its Hawthorne, California, facility, with the remaining production from its Grand Prairie, Texas, facility expected to be completed in early to mid-fiscal 2022. Facility exit plans are underway at both locations and are expected to result in additional cost to exit of approximately $7.5 million through mid-fiscal 2022 and result in projected cash uses.

G280 In May 2020, we reached agreement to the accelerated transfer of the G280 wing program to IAI and Korean Aerospace Industries. We completed the final wing assembly in July 2020 and have closed our manufacturing operations at the leased Tulsa factory as of the end of October 2020.

G650 In the first quarter of fiscal 2019, we reached an agreement with Gulfstream to optimize the supply chain on our G650 work scope. The G650 wing box and wing completion work, which had been coproduced across three facilities at both companies, are being consolidated into Gulfstream’s facilities in Savannah, Georgia. We completed the manufacturing of our final wing box in July 2019. In August 2020, we completed the transfer of our

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document remaining G650 wing supply chain activity and engineering services to Gulfstream. As a result of the divestiture of our composites manufacturing operations located in Milledgeville, Georgia, in May 2021, we no longer are responsible for the production of G650 wing components. We continue to produce G650 flaps under a separate supply agreement.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document T-7 Red Hawk The T-7 Red Hawk wing and horizontal tail manufacturing operations were part of the sale of our Red Oak, Texas manufacturing operations which closed in May 2021. The related manufacturing operations did not have a significant impact on the results of our operations in the year ended March 31, 2021. Although none of the development or production programs noted above individually are expected to have a material impact on our net revenues, they do have the potential, either individually or in the aggregate, to materially and negatively impact our consolidated results of operations if future changes in estimates result in the need for a forward loss provision. Absent any such loss provisions, we do not anticipate that any of these programs will significantly dilute our future consolidated margins, although a prolonged impact of the COVID-19 pandemic could result in changes in expectations. During the fiscal year ended March 31, 2020, we divested of a number of our assets and operations, including the sale of our manufacturing operations at our Nashville, Tennessee, facility and the assignment of our E-2 Jets contract with Embraer for the manufacture of structural components for their program to AeroSpace Technologies of Korea Inc. ("ASTK"). We recognized combined net losses of $56.9 million associated with the fiscal 2020 divestitures, which are presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses, net. The operating results of the Nashville manufacturing operations are included in Aerospace Structures through the date of divestiture or assignment. Collectively, these transactions are referred to as the “fiscal 2020 divestitures.” During the fiscal year ended March 31, 2019, we divested of a number of our assets and operations, including (i) selling all of the shares of Triumph Structures - East Texas, Inc. and all of the shares of Triumph Structures - Los Angeles, Inc. and Triumph Processing, Inc. (collectively, the "Long & Large"), (ii) transitioning the responsibility for the Bombardier Global 7500 ("Global 7500") wing program manufacturing operations of Aerospace Structures to Bombardier, (iii) selling all of the shares of Triumph Fabrications - San Diego, Inc. and Triumph Fabrications - Ft. Worth, Inc. (together, "Fabrications"), (iv) selling all of the shares of Triumph Structures – Kansas City, Inc., Triumph Structures – Wichita, Inc., Triumph Gear Systems – Toronto, ULC and Triumph Northwest (The Triumph Group Operations, Inc.) (together, "Machining"), and (v) selling all of the shares of Triumph Aviation Services - NAAS Division, Inc. ("NAAS"). Collectively, these transactions are referred to as the "fiscal 2019 divestitures". We recognized combined net losses of $235.3 million associated with the fiscal 2019 divestitures, which are presented on the accompanying consolidated statements of operations within loss on divestitures. With the exception of NAAS, the operating results for the fiscal 2019 divestitures are included in Aerospace Structures ("fiscal 2019 Aerospace Structures Divestitures") through the respective dates of divestiture. The operating results for NAAS are included in Systems & Support through the date of divestiture.

RESULTS OF OPERATIONS The following includes a discussion of our consolidated and business segment results of operations. Our diverse structure and customer base do not provide for precise comparisons of the impact of price and volume changes to our results. However, we have disclosed the significant variances between the respective periods.

Non-GAAP Financial Measures We prepare and publicly release annual audited and quarterly unaudited financial statements prepared in accordance with U.S. GAAP. In accordance with Securities and Exchange Commission (the "SEC") rules, we also disclose and discuss certain non-GAAP financial measures in our public filings and earning releases. Currently, the non-GAAP financial measures that we disclose are Adjusted EBITDA, which is our net loss before interest, income taxes, amortization of acquired contract liabilities, legal settlements, loss on divestitures, depreciation and amortization; and Adjusted EBITDAP, which is Adjusted EBITDA, before pension expense or benefit, including the effects of curtailments, settlements, and other early retirement incentives. We disclose Adjusted EBITDA on a consolidated and Adjusted EBITDAP on a consolidated and a reportable segment basis in our earnings releases, investor conference calls and filings with the SEC. The non-GAAP financial measures that we use may not be comparable to similarly titled measures reported by other companies. Also, in the future, we may disclose different non-GAAP financial measures in order to help our investors more meaningfully evaluate and compare our future results of operations with our previously reported results of operations.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document We view Adjusted EBITDA and Adjusted EBITDAP as operating performance measures and, as such, we believe that the U.S. GAAP financial measure most directly comparable to such measures is net loss. In calculating Adjusted EBITDA and Adjusted EBITDAP, we exclude from net loss the financial items that we believe should be separately identified to provide additional analysis of the financial components of the day-to-day operation of our business. We have outlined below the type and scope of these exclusions and the material limitations on the use of these non-GAAP financial measures as a result of these exclusions. Adjusted EBITDA and Adjusted EBITDAP are not measurements of financial performance under U.S. GAAP and should not be considered as a measure of liquidity, as an alternative to net loss, or as an indicator of any other measure of performance derived in accordance with U.S. GAAP. Investors and potential investors in our securities should not rely on Adjusted EBITDA or Adjusted EBITDAP as a substitute for any U.S. GAAP financial measure, including net loss. In addition, we urge investors and potential investors in our securities to carefully review the reconciliation of Adjusted EBITDA and Adjusted EBITDAP to net loss set forth below, in our earnings releases, and in other filings with the SEC and to carefully review the U.S. GAAP financial information included as part of our Quarterly Reports on Form 10-Q and our Annual Reports on Form 10-K that are filed with the SEC, as well as our quarterly earnings releases, and compare the U.S. GAAP financial information with our Adjusted EBITDA and Adjusted EBITDAP. Adjusted EBITDA and Adjusted EBITDAP are used by management to internally measure our operating and management performance and by investors as a supplemental financial measure to evaluate the performance of our business that, when viewed with our U.S. GAAP results and the accompanying reconciliation, we believe provides additional information that is useful to gain an understanding of the factors and trends affecting our business. We have spent more than 20 years expanding our product and service capabilities, partially through acquisitions of complementary businesses. Due to the expansion of our operations, which included acquisitions, our net loss has included significant charges for depreciation and amortization. Adjusted EBITDA and Adjusted EBITDAP exclude these charges and provide meaningful information about the operating performance of our business, apart from charges for depreciation and amortization. We believe the disclosure of Adjusted EBITDA and Adjusted EBITDAP helps investors meaningfully evaluate and compare our performance from quarter to quarter and from year to year. We also believe Adjusted EBITDA and Adjusted EBITDAP are measures of our ongoing operating performance because the isolation of noncash charges, such as depreciation and amortization, and nonoperating items, such as interest, income taxes, pension and other postretirement benefits, provides additional information about our cost structure and, over time, helps track our operating progress. In addition, investors, securities analysts, and others have regularly relied on Adjusted EBITDA and Adjusted EBITDAP to provide financial measures by which to compare our operating performance against that of other companies in our industry. Set forth below are descriptions of the financial items that have been excluded from our net income to calculate Adjusted EBITDA and Adjusted EBITDAP and the material limitations associated with using these non-GAAP financial measures as compared with net loss from continuing operations: • Gains or losses from sale of assets and businesses may be useful for investors to consider because they reflect gains or losses from sale of operating units or other assets. We do not believe these earnings necessarily reflect the current and ongoing cash earnings related to our operations. • Legal judgments and settlements, when applicable, may be useful for investors to consider because it reflects gains or losses from disputes with third parties. We do not believe these earnings necessarily reflect the current and ongoing cash earnings related to our operations. • Non-service defined benefit income or expense from our pension and other postretirement benefit plans (inclusive of the adoption of ASU 2017-07, Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, and certain pension related transactions such as curtailments, settlements, early retirement or other incentives) may be useful for investors to consider because they represent the cost of postretirement benefits to plan participants, net of the assumption of returns on the plan's assets and are not indicative of the cash paid for such benefits. We do not believe these earnings (expenses) necessarily reflect the current and ongoing cash earnings related to our operations. • Amortization of acquired contract liabilities may be useful for investors to consider because it represents the noncash earnings on the fair value of off-market contracts acquired through acquisitions. We do not believe these earnings necessarily reflect the current and ongoing cash earnings related to our operations. • Amortization expense and nonrecurring asset impairments (including goodwill, intangible asset impairments, and nonrecurring rotable inventory impairments) may be useful for investors to consider because it represents the estimated attrition of our acquired customer base and the diminishing value of tradenames, product rights, licenses, or, in the case of goodwill, other assets that are not individually identified and separately recognized under U.S. GAAP, or, in the case of nonrecurring asset impairments, the impact of unusual and nonrecurring events affecting the estimated recoverability of existing assets. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document • Depreciation may be useful for investors to consider because it generally represents the wear and tear on our property and equipment used in our operations. We do not believe these charges necessarily reflect the current and ongoing cash charges related to our operating cost structure. • The amount of interest expense and other we incur may be useful for investors to consider and may result in current cash inflows or outflows. However, we do not consider the amount of interest expense and other to be a representative component of the day-to-day operating performance of our business.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document • Income tax expense may be useful for investors to consider because it generally represents the taxes that may be payable for the period and the change in deferred income taxes during the period and may reduce the amount of funds otherwise available for use in our business. However, we do not consider the amount of income tax expense to be a representative component of the day-to-day operating performance of our business. Management compensates for the above-described limitations of using non-GAAP measures only to supplement our U.S. GAAP results and to provide additional information that is useful to gain an understanding of the factors and trends affecting our business. The following table shows our Adjusted EBITDA and Adjusted EBITDAP reconciled to our net loss for the indicated periods (in thousands):

Fiscal year ended March 31, 2021 2020 2019 Net loss (U.S. GAAP measure) $ (450,910) $ (29,433) $ (327,146) Income tax expense (benefit) 2,881 5,798 (5,426) Interest expense and other 171,397 122,129 114,619 Curtailments, settlements and early retirement incentives — 14,293 4,032 Union represented employee incentives — 7,071 — Legal judgment gain, net of expenses — (9,257) — Impairment of rotable inventory 23,689 — — Loss on sale of assets and businesses, net 104,702 56,916 235,301 Adoption of ASU 2017-07 — — 87,241 Amortization of acquired contract liabilities (38,564) (75,286) (67,314) Depreciation and amortization* 345,716 204,289 149,904 Adjusted EBITDA (non-GAAP measure) $ 158,911 $ 296,520 $ 191,211 Non-service defined benefit income (excluding settlements) (49,519) (54,880) (60,758) Adjusted EBITDAP (non-GAAP measure) $ 109,392 $ 241,640 $ 130,453

* Includes impairment charges related to intangible assets The following tables show our Adjusted EBITDAP by reportable segment reconciled to our operating (loss) income for the indicated periods (in thousands):

Fiscal year ended March 31, 2021 Systems & Aerospace Corporate/ Total Support Structures Eliminations Operating (loss) income $ (326,151) $ 113,517 $ (267,702) $ (171,966) Loss on sale of assets and businesses 104,702 — — 104,702 Impairment of rotable inventory 23,689 23,689 — — Amortization of acquired contract liabilities (38,564) (15,062) (23,502) — Depreciation and amortization* 345,716 33,549 308,708 3,459 Adjusted EBITDAP $ 109,392 $ 155,693 $ 17,504 $ (63,805)

Fiscal year ended March 31, 2020 Systems & Aerospace Corporate/ Total Support Structures Eliminations Operating income (loss) $ 57,907 $ 141,341 $ 41,864 $ (125,298) Legal judgment gain, net of expenses (9,257) $ — $ — $ (9,257) Loss (gain) on sale of assets and businesses 56,916 $ — $ (10,121) $ 67,037 Union represented employee incentives 7,071 — 7,071 — Amortization of acquired contract liabilities (75,286) (34,486) (40,800) — Depreciation and amortization* 204,289 98,497 102,418 3,374 Adjusted EBITDAP $ 241,640 $ 205,352 $ 100,432 $ (64,144)

Fiscal year ended March 31, 2019 Systems & Aerospace Corporate/ Total Support Structures Eliminations Operating (loss) income $ (274,679) $ 201,094 $ (152,407) $ (323,366)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Loss on sale of assets and businesses 235,301 — — 235,301 Adoption of ASU 2017-07 87,241 — 87,241 — Amortization of acquired contract liabilities (67,314) (34,121) (33,193) — Depreciation and amortization 149,904 35,373 111,431 3,100 Adjusted EBITDAP $ 130,453 $ 202,346 $ 13,072 $ (84,965)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document * Includes impairment charges related to intangible assets The fluctuations from period to period within the amounts of the components of the reconciliations above are discussed further below within Results of Operations.

Fiscal year ended March 31, 2021, compared with fiscal year ended March 31, 2020

Year Ended March 31, 2021 2020 (in thousands) Net sales $ 1,869,719 $ 2,900,117 Segment operating (loss) income $ (154,185) $ 183,205 Corporate expense (171,966) (125,298) Total operating (loss) income (326,151) 57,907 Interest expense and other 171,397 122,129 Non-service defined benefit income (49,519) (40,587) Income tax expense 2,881 5,798 Net loss $ (450,910) $ (29,433)

Net Sales Net sales decreased by $1.03 billion, or 35.5%, to $1.87 billion for the fiscal year ended March 31, 2021, from $2.90 billion for the fiscal year ended March 31, 2020. Organic sales adjusted for inter-segment sales decreased $782.3 million, or 29.9%, with additional declines from the Nashville and G650 divestitures of $248.1 million. Organic sales decreased primarily due to the impacts of the COVID-19 pandemic, including temporarily idle facilities and certain production rate decreases primarily on commercial programs, planned reductions on sunsetting programs (i.e., 747-8, G280, G550), and the transitioned workscope on the E-2 Jet program. These declines were partially offset by increases in military platforms. Net sales for the year ended March 31, 2021, included $43.8 million in total nonrecurring revenues, as compared with $41.5 million for the year ended March 31, 2020. Cost of Sales and Gross Margin Cost of sales decreased by $831.1 million, or 36.0%, to $1.48 billion for the fiscal year ended March 31, 2021, from $2.31 billion for the fiscal year ended March 31, 2020. Organic cost of sales adjusted for inter-segment sales decreased $588.8 million, or 29.0%, with additional declines from the Nashville and G650 divestitures of $242.3 million. Organic cost of sales decreased primarily due to the lower volumes described above within our discussion of net sales and a $10.0 million partial reversal of prior loss reserves. These decreases were partially offset by an approximately $23.7 million impairment loss recognized in cost of sales on certain rotable inventory that primarily arose as a result of customer fleet retirement announcements resulting from the COVID-19 pandemic.

Organic gross margin for the fiscal year ended March 31, 2021, was 21.1% compared with 22.1% for the fiscal year ended March 31, 2020. The gross margin for the fiscal year ended March 31, 2021, decreased primarily as a result of the impairment of rotable asset inventory as cost-reduction actions and certain favorable customer settlements offset absorption related increases. Gross margin for the year ended March 31, 2021, included net favorable cumulative catch-up adjustments on long-term contracts of $12.3 million. The favorable cumulative catch-up adjustments to operating income included gross favorable adjustments of $55.2 million and gross unfavorable adjustments of $42.8 million. Gross margins for the year ended March 31, 2020, included net unfavorable cumulative catch-up adjustments of $22.8 million. Segment Operating Income Segment operating income decreased by $337.4 million, or 184.2%, to an operating loss of $154.2 million for the fiscal year ended March 31, 2021, from segment operating income of $183.2 million for the fiscal year ended March 31, 2020. Organic segment operating income decreased by $338.9 million, or 187.9%, primarily due to long-lived asset impairment charges of $252.4 million partially offset by the prior year goodwill impairment of $66.1 million, the decreased volumes and impairment of rotable asset inventory discussed above within our discussion of net sales and cost of sales, increased restructuring costs of $20.4 million. These increases were partially offset by decreases in administrative compensation cost of $20.5 million, travel costs of $6.9 million, decreased research and development costs of $4.9 million, the reduction in the forward loss reserve of a commercial widebody program described above within our discussion of cost of sales, and intangible asset amortization expense of $26.7 million, the latter being the result of the reduction in the carrying value of the long-lived assets impaired in the first fiscal quarter impairment as disclosed in Note 2. Additionally, the Nashville and G650

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document divestitures contributed approximately $4.3 million of operating income in the year ended March 31, 2021, which is consistent with the operating income contributed in the year ended March 31, 2020. Corporate Expense Corporate operations incurred expenses of $172.0 million for the fiscal year ended March 31, 2021, as compared with $125.3 million for the fiscal year ended March 31, 2020. The corporate expenses increased because of increased loss on sale of assets and businesses of $37.7 million, increased restructuring costs of $7.5 million, and a $9.3 million gain on legal judgment in the prior fiscal year. These increases were partially offset by decreased subscription costs of $3.3 million and travel costs of $2.6 million.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Interest Expense and Other Interest expense and other increased by $49.3 million, or 40.3%, to $171.4 million for the fiscal year ended March 31, 2021, compared with $122.1 million for the fiscal year ended March 31, 2020, due to the write-off of approximately $15.6 million of deferred financing fees associated with the extinguishment of our revolving credit facility and partial extinguishment of our 5.25% Senior Notes due June 1, 2022 (the “2022 Notes”), as well as higher interest rates and relative debt levels and a $6.2 million increase from the net unfavorable change in foreign currency exchange rate losses. Non-service Defined Benefit Income Non-service defined benefit income increased by $8.9 million, or 22.0%, to $49.5 million for the fiscal year ended March 31, 2021, compared with $40.6 million for the fiscal year ended March 31, 2020. The increase was primarily due to prior year expenses from pension settlements, special termination benefits, and curtailment losses of $64.6 million partially offset by a prior year gain from curtailment of other post-employment benefits of $49.5 million, partially offset by changes in actuarial assumptions and experience which reduced income for the year ended March 31, 2021, by $6.3 million. Income Taxes The income tax expense was $2.9 million for the fiscal year ended March 31, 2021, reflecting an effective tax rate of (0.7)%. During the fiscal year ended March 31, 2021, we adjusted the valuation allowance against the consolidated net deferred tax asset by $73.9 million primarily due to an increase in the net operating loss and changes to temporary differences related to interest disallowance, long-lived intangible asset impairment, and pension and other postretirement benefit plans. As of March 31, 2021, management determined that it was necessary to maintain a valuation allowance against principally all of our net deferred tax assets.

Fiscal year ended March 31, 2020, compared with fiscal year ended March 31, 2019

Year Ended March 31, 2020 2019 (in thousands) Net sales $ 2,900,117 $ 3,364,930 Segment operating income $ 183,205 $ 48,687 Corporate expenses (125,298) (323,366) Total operating income (loss) 57,907 (274,679) Interest expense and other 122,129 114,619 Non-service defined benefit income (40,587) (56,726) Income tax expense (benefit) 5,798 (5,426) Net loss $ (29,433) $ (327,146)

Net Sales Net sales decreased by $464.8 million, or 13.8%, to $2.90 billion for the fiscal year ended March 31, 2020, from $3.36 billion for the fiscal year ended March 31, 2019. Organic sales adjusted for inter-segment sales increased $140.5 million, or 5.2%, offset by declines from the fiscal 2019 divestitures and fiscal 2020 divestitures, including the Global 7500 transition, of $605.3 million. Organic sales increased primarily due to increased volumes across Airbus commercial programs and various military programs, as well as aftermarket demand for military rotorcraft programs in Systems & Support, increased volumes on G550, 767, 787, G280, and M100 programs as well as increased volume and pricing on E-2 Jets sales to ASTK in Aerospace Structures, and increased demand for accessory components. These increases were partially offset in decreased volumes on 737. Cost of Sales and Gross Margin Cost of sales decreased by $617.5 million, or 21.1%, to $2.31 billion for the fiscal year ended March 31, 2020, from $2.92 billion for the fiscal year ended March 31, 2019. Organic cost of sales adjusted for inter-segment sales increased $26.3 million, or 1.2%, offset by declines from the fiscal 2019 divestitures and fiscal 2020 divestitures, including the Global 7500 transition, of $645.6 million. Organic cost of sales increased primarily due to the higher volumes in the above programs partially offset by the prior year forward loss provisions from the adoption of ASU 2017-07 of $87.2 million. Organic gross margin for the fiscal year ended March 31, 2020, was 20.8% compared with 17.6% for the fiscal year ended March 31, 2019. The gross margin for the fiscal year ended March 31, 2020, increased compared with the prior year period due to the nonrecurring forward loss provisions from the adoption of ASU 2017-07. Gross margin included net unfavorable cumulative catch-up adjustments on long-term contracts of $22.8 million. The unfavorable cumulative catch-up adjustments to operating income included gross favorable adjustments of $43.4 million

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document and gross unfavorable adjustments of $66.2 million. Gross margins for fiscal 2019 included net unfavorable cumulative catch-up adjustments of $68.7 million. Segment Operating Income Segment operating income increased by $134.5 million, or 276.3%, to $183.2 million for the fiscal year ended March 31, 2020, from $48.7 million for the fiscal year ended March 31, 2019. Organic segment operating income increased by $45.1 million, or 31.7%,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document primarily due to the increased margins above as well as decreases in administrative compensation cost of $13.7 million and research and development of $8.5 million, were partially offset by a $66.1 million goodwill impairment charge under Systems & Support. The fiscal 2019 divestitures and fiscal 2020 divestitures contributed $89.4 million in increased operating income in the current year primarily due to incurring operating losses of the fiscal year ended March 31, 2019. Corporate Expense Corporate operations incurred expenses of $125.3 million for the fiscal year ended March 31, 2020, as compared with $323.4 million for the fiscal year ended March 31, 2019. The corporate expenses included decreased loss on sale of assets and businesses of $168.3 million, decreased compensation cost of $12.3 million, with additional benefit from the legal judgment gain of $9.3 million. Interest Expense and Other Interest expense and other increased by $7.5 million, or 6.6%, to $122.1 million for the fiscal year ended March 31, 2020, compared with $114.6 million for the fiscal year ended March 31, 2019, due to higher interest rates and relative debt levels. Non-service Defined Benefit Income Non-service defined benefit income decreased by $16.1 million, or 28.5%, to $40.6 million for the fiscal year ended March 31, 2020, compared with $56.7 million for the fiscal year ended March 31, 2019. The decrease was primarily due to additional expense in the current year from pension settlements, special termination benefits, and curtailment losses of $64.6 million partially offset by a gain from curtailment of other post-employment benefits of $49.5 million, as well as changes in actuarial assumptions and experience which reduced income for fiscal year 2020 by $4.1 million. Income Taxes The income tax expense was $5.8 million for the fiscal year ended March 31, 2020, reflecting an effective tax rate of (24.5)%. During the fiscal year ended March 31, 2020, we adjusted the valuation allowance against the consolidated net deferred tax asset by $36.9 million primarily due to an increase in the net operating loss and changes to temporary differences related to pension and other postretirement benefit plans. As of March 31, 2020, management determined that it was necessary to maintain a valuation allowance against principally all of our net deferred tax assets.

Business Segment Performance We report our financial performance based on the following two reportable segments: Systems & Support and Aerospace Structures. Our Chief Operating Decision Maker ("CODM") utilizes Adjusted EBITDAP as a primary measure of profitability to evaluate performance of our segments and allocate resources. The results of operations among our reportable segments vary due to differences in competitors, customers, extent of proprietary deliverables and performance. For example, Systems & Support, which generally includes proprietary products and/or arrangements where we become the primary source or one of a few primary sources to our customers, our unique manufacturing capabilities command a higher margin. Also, OEMs are increasingly focusing on assembly activities while outsourcing more manufacturing and repair to third parties, and as a result, are less of a competitive force than in previous years. This compares to Aerospace Structures, which generally includes long-term sole-source or preferred supplier contracts and the success of these programs provides a strong foundation for our business and positions us well for future growth on new programs and new derivatives. Refer to Item 1 for further details regarding the operations and capabilities of each of our reportable segments.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document We currently generate a majority of our revenue from clients in the commercial aerospace industry, the military, the business jet industry and the regional airline industry. Our growth and financial results are largely dependent on continued demand for our products and services from clients in these industries. If any of these industries experiences a downturn, our clients in these sectors may conduct less business with us. The following table summarizes our net sales by end market by business segment. The loss of one or more of our major customers or an economic downturn in the commercial airline or the military and defense markets could have a material adverse effect on our business.

Year Ended March 31, 2021 2020 2019 Systems & Support Commercial aerospace 22.0% 26.5% 22.6% Military 29.5 15.0 12.2 Business Jets 2.0 2.3 1.9 Regional 1.3 1.5 1.4 Non-aviation 1.7 1.3 0.8 Total Systems & Support net sales 56.5% 46.6% 38.9% Aerospace Structures Commercial aerospace 25.8% 30.3% 30.4% Military 7.4 4.0 7.1 Business Jets 9.7 16.0 21.7 Regional 0.6 3.1 1.1 Non-aviation 0.0 0.0 0.8 Total Aerospace Structures net sales 43.5% 53.4% 61.1% Total Consolidated net sales 100.0% 100.0% 100.0%

The impacts of the COVID-19 pandemic and resulting production rate decreases primarily on commercial programs led to a reduction in the proportion of our sales mix arising from the commercial aerospace end market in both of our segments. The current year transfer of the assets and certain liabilities associated with our Gulfstream G650 wing supply chain activities and the fiscal 2020 divestitures led to reductions in our sales mix arising from the business jets end market and also contributed to the reductions in commercial aerospace within Aerospace Structures. Additionally, both Systems & Support and Aerospace Structures experienced increases in military end market sales primarily from volume on military rotorcraft.

Business Segment Performance—Fiscal year ended March 31, 2021, compared with fiscal year ended March 31, 2020

Year Ended March 31, % Change % of Total Sales 2021 2020 2021 2020 (in thousands) NET SALES Systems & Support $1,060,001 $1,357,564 (21.9)% 56.7% 46.8% Aerospace Structures 814,371 1,555,887 (47.7)% 43.6% 53.7% Elimination of inter-segment sales (4,653) (13,334) 65.1% (0.3)% (0.5)% Total net sales $1,869,719 $ 2,900,117 (35.5)% 100.0% 100.0%

Year Ended March 31, % Change % of Segment Sales 2021 2020 2021 2020 (in thousands) SEGMENT OPERATING (LOSS) INCOME Systems & Support $ 113,517 $ 141,341 (19.7)% 10.7% 10.4% Aerospace Structures (267,702) 41,864 (739.5)% (32.9)% 2.7% Corporate (171,966) (125,298) (37.3)% n/a n/a Total segment operating (loss) income $ (326,151) $ 57,907 (663.2)% (17.4)% 2.0%

Year Ended March 31, % Change % of Segment Sales 2021 2020 2021 2020

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document (in thousands) Adjusted EBITDAP Systems & Support $ 155,693 $ 205,352 (24.2)% 14.9% 15.5% Aerospace Structures 17,504 100,432 (82.6)% 2.2% 6.6% Corporate (63,805) (64,144) 0.5% n/a n/a $ 109,392 $ 241,640 (54.7)% 6.0% 8.6%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Systems & Support: Net Sales Systems & Support net sales decreased by $297.6 million, or 21.9%, to $1.06 billion for the fiscal year ended March 31, 2021, from $1.36 billion for the fiscal year ended March 31, 2020. Sales decreased primarily due the impact of the COVID-19 pandemic and decreased sales volumes on commercial narrowbody and widebody programs, partially offset by increases in military platforms. Cost of Sales and Gross Margin Systems & Support cost of sales decreased by $178.6 million, or 18.6%, to $781.9 million for the fiscal year ended March 31, 2021, from $960.5 million for the fiscal year ended March 31, 2020. Gross margin for the fiscal year ended March 31, 2021, was 26.2% compared with 29.3% for the fiscal year ended March 31, 2020. Cost of sales decreased due to the sales decrease noted above as well as sales mix and the results of our restructuring and cost-reduction activities as well as a $10.0 million partial reversal of prior loss reserves. These decreases were partially offset by an approximately $23.7 million impairment loss recognized in cost of sales on certain rotable inventory that primarily arose as a result of customer fleet retirement announcements resulting from the COVID-19 pandemic. Gross margin decreased primarily as a result of the changes in sales mix and the impairment of rotable inventory, as cost-reduction actions offset absorption related increases. Operating Income and Adjusted EBITDAP Systems & Support operating income decreased by $27.8 million, or 19.7%, to $113.5 million for the fiscal year ended March 31, 2021, from $141.3 million for the fiscal year ended March 31, 2020. Operating income decreased primarily due to the decreased sales and factors affecting cost of sales noted above, partially offset by reductions in administrative compensation cost of $9.4 million and restructuring costs of $11.8 million as well the goodwill impairment recognized in the year ended March 31, 2020, of $66.1 million. The decrease in Adjusted EBITDAP year over year is due to the same factors that decreased operating income, with the exception of the current year rotable inventory asset impairment and the prior year goodwill impairment, which are excluded from Adjusted EBITDAP. Operating Margin and Adjusted EBITDAP Margin Systems & Support operating income as a percentage of segment sales increased to 10.7% for the fiscal year ended March 31, 2021, as compared with 10.4% for the fiscal year ended March 31, 2020, due to the factors described above. These same factors contributed to the decrease in Adjusted EBITDAP margin to 14.9% from 15.5% year over year, with the exception of the current year rotable inventory asset impairment and the prior year goodwill impairment, which are excluded from Adjusted EBITDAP. Aerospace Structures: Net Sales Aerospace Structures net sales decreased by $741.5 million, or 47.7%, to $814.4 million for the fiscal year ended March 31, 2021, from $1.56 billion for the fiscal year ended March 31, 2020. Organic net sales decreased by $493.5 million, with additional declines from the Nashville and G650 divestitures of $248.1 million. Organic net sales decreased due to the planned reductions on sunsetting programs (i.e., 747-8, G280, G550), the transitioned workscope on the E-2 Jets and G650 programs, as well as the impacts of the COVID-19 pandemic, including temporarily idle facilities and certain production rate decreases primarily on commercial programs. Net sales for the year ended March 31, 2021, included $43.8 million in total nonrecurring revenues, as compared with $36.5 million for the year ended March 31, 2020. Cost of Sales and Gross Margin Aerospace Structures cost of sales decreased by $661.2 million, or 48.6%, to $699.0 million for the fiscal year ended March 31, 2021, from $1.36 billion for the fiscal year ended March 31, 2020. Organic cost of sales decreased by $418.9 million, with an additional reduction in cost of sales from the Nashville and G650 divestitures of $242.3 million. Organic gross margin for the fiscal year ended March 31, 2021, was 14.1% compared with 14.5% for the fiscal year ended March 31, 2020. The decrease in organic cost of sales is due to decrease in sales noted above. Organic gross margin decreased primarily as a result of increased product costs due to the lower sales volumes partially offset by the results of our restructuring and cost reduction activities and certain favorable customer settlements. The gross margin included net favorable cumulative catch-up adjustments of $11.5 million. The net favorable cumulative catch-up adjustments included gross favorable adjustments of $54.4 million and gross unfavorable adjustments of $42.8 million. The net unfavorable cumulative catch-up adjustment for the fiscal year ended March 31, 2020, was $22.9 million. Operating Income and Adjusted EBITDAP Aerospace Structures operating income decreased by $309.6 million, or 739.5%, to an operating loss of $267.7 million for the fiscal year ended March 31, 2021, from operating income of $41.9 million for the fiscal year ended March 31, 2020. Organic operating income decreased by $311.1 million, or 795.9%. The Nashville and G650 divestitures contributed

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document approximately $4.3 million of operating income in the year ended March 31, 2021, which is consistent with the operating income contributed in the year ended March 31, 2020. The decreased organic operating income for the fiscal year ended March 31, 2021, was primarily the result of the decreases noted above as well as the $252.4 million long-lived asset impairment described above and an increase in restructuring costs of $32.2 million partially offset by decreased administrative compensation cost of $11.1 million and intangible asset amortization expense of $26.7 million, the latter being the result of the reduction in the carrying value of the long-lived assets impaired in the first quarter impairment as disclosed in Note 2. The increase in Adjusted EBITDAP year over year is due to the same factors that increased operating income, except for the long-lived asset impairment charges, which are excluded from Adjusted EBITDAP.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Operating Margin and Adjusted EBITDAP Margin Aerospace Structures operating loss as a percentage of segment sales decreased to (32.9)% for the fiscal year ended March 31, 2021, as compared with 2.7% for the fiscal year ended March 31, 2020, due to the decrease in operating income as noted above. These same factors as noted above for the Adjusted EBITDAP contributed to the decrease in Adjusted EBITDAP margin to 2.2% from 6.6% year over year.

Business Segment Performance—Fiscal year ended March 31, 2020, compared with fiscal year ended March 31, 2019

Year Ended March 31, % Change % of Total Sales 2020 2019 2020 2019 (in thousands) NET SALES Systems & Support $1,357,564 $ 1,325,011 2.5% 46.8% 39.4% Aerospace Structures 1,555,887 2,062,404 (24.6)% 53.7% 61.3% Elimination of inter-segment sales (13,334) (22,485) 40.7% (0.5)% (0.7)% Total net sales $ 2,900,117 $3,364,930 (13.8)% 100.0% 100.0%

Year Ended March 31, % Change % of Segment Sales 2020 2019 2020 2019 (in thousands) SEGMENT OPERATING INCOME (LOSS) Systems & Support $ 141,341 $ 201,094 (29.7)% 10.4% 15.2% Aerospace Structures 41,864 (152,407) 127.5% 2.7% (7.4)% Corporate (125,298) (323,366) 61.3% n/a n/a Total segment operating income (loss) $ 57,907 $ (274,679) 121.1% 2.0% (8.2)%

Year Ended March 31, % Change % of Segment Sales 2020 2019 2020 2019 (in thousands) Adjusted EBITDAP Systems & Support $ 205,352 $ 202,346 1.5% 15.5% 15.7% Aerospace Structures 100,432 13,072 668.3% 6.6% 0.6% Corporate (64,144) (84,965) 24.5% n/a n/a $ 241,640 $ 130,453 85.2% 8.6% 4.0%

Systems & Support: Net Sales Systems & Support net sales increased by $32.6 million, or 2.5%, to $1.36 billion for the fiscal year ended March 31, 2020, from $1.33 billion for the fiscal year ended March 31, 2019. Organic sales increased by $63.3 million, or 4.9%, offset by declines of $30.8 million from the fiscal 2019 divestitures within Systems & Support. Organic sales increased due to increased volumes on engine components, Airbus commercial programs, aftermarket demand for military rotorcraft components, and aftermarket spare part sales and accessory component repairs. These increases were partially offset by decreased volumes on 737. Cost of Sales and Gross Margin Systems & Support cost of sales increased by $8.7 million, or 0.9%, to $960.5 million for the fiscal year ended March 31, 2020, from $951.8 million for the fiscal year ended March 31, 2019. Organic cost of sales increased by $33.1 million, or 3.6%, offset by declines of $24.4 million from the fiscal 2019 divestitures within Systems & Support. Organic gross margin for the fiscal year ended March 31, 2020, was 29.3% compared with 28.3% for the fiscal year ended March 31, 2019. Organic cost of sales increased due to the sales increase noted above and sales mix, partially offset by a reduction of cost of sales as a result of a $5.3 million reduction in acquired contract reserves, which also drove the increased gross margin for the fiscal year ended March 31, 2020. Operating Income and Adjusted EBITDAP Systems & Support operating income decreased by $59.8 million, or 29.7%, to $141.3 million for the fiscal year ended March 31, 2020, from $201.1 million for the fiscal year ended March 31, 2019. Organic operating income decreased by

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document $57.2 million, or 28.8% primarily due to the goodwill impairment charge of $66.1 million and increased restructuring costs of $8.3 million, partially offset by decreased research and development costs of $5.9 million and the increased gross margin described above. The fiscal 2019 divestitures resulted in $2.6 million in decreased operating income in the current year primarily due to operating income earned in the fiscal year ended March 31, 2019.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Operating Margin and Adjusted EBITDAP Margin Systems & Support operating income as a percentage of segment sales decreased to 10.4% for the fiscal year ended March 31, 2020, as compared with 15.2% for the fiscal year ended March 31, 2019, due to the factors described above. These same factors contributed to the decrease in Adjusted EBITDAP margin year over year. Aerospace Structures: Net Sales Aerospace Structures net sales decreased by $506.5 million, or 24.6%, to $1.56 billion for the fiscal year ended March 31, 2020, from $2.06 billion for the fiscal year ended March 31, 2019. Organic net sales increased by $68.0 million, offset by declines of $574.5 million from the fiscal 2019 and fiscal 2020 divestitures within Aerospace Structures. Organic net sales increased due to increased volumes for the G280, G550, 767, and M100 programs, as well as increased volumes and pricing related to the E-2 Jets and 787 programs. These increases were partially offset by decreased volumes on 737. Cost of Sales and Gross Margin Aerospace Structures cost of sales decreased by $637.2 million, or 31.9%, to $1.36 billion for the fiscal year ended March 31, 2020, from $2.00 billion for the fiscal year ended March 31, 2019. Organic cost of sales decreased by $16.0 million, with an additional reduction in cost of sales of $621.3 million from the fiscal 2019 and fiscal 2020 divestitures within Aerospace Structures. Organic gross margin for the fiscal year ended March 31, 2020, was 13.0% compared with 7.7% for the fiscal year ended March 31, 2019. The decrease in organic cost of sales is due to the nonrecurring forward loss provisions from the adoption of ASU 2017-07 in the year ended March 31, 2019, of $87.2 million and a reduction in unfavorable cumulative catch-up adjustments of $45.8 million partially offset by increases related to the increased net sales above. The gross margin included net unfavorable cumulative catch-up adjustments of $22.9 million due in large part to the estimated effects of the COVID-19 pandemic. The net unfavorable cumulative catch-up adjustments included gross favorable adjustments of $43.3 million and gross unfavorable adjustments of $66.2 million. The net unfavorable cumulative catch-up adjustment for the fiscal year ended March 31, 2019, was $68.7 million. Operating Income and Adjusted EBITDAP Aerospace Structures operating income increased by $194.3 million, or 127.5%, to $41.9 million for the fiscal year ended March 31, 2020, from an operating loss of $152.4 million for the fiscal year ended March 31, 2019. Organic operating income increased by $102.3 million, or 182.0%, with further increases resulting from the fiscal 2019 and fiscal 2020 divestitures within Aerospace Structures of $92.0 million. The increased organic operating income for the fiscal year ended March 31, 2020, was primarily due to the increased gross margin discussed above as well as lower administrative compensation due to decreased severance and headcount of approximately $18.8 million and the approximately $10.0 million gain recognized as a result of the transfer of the E-2 Jets program to ASTK. The increase in Adjusted EBITDAP year over year is due to the same factors that increased operating income. Operating Margin and Adjusted EBITDAP Margin Aerospace Structures operating income as a percentage of segment sales increased to 2.7% for the fiscal year ended March 31, 2020, as compared with (7.4)% for the fiscal year ended March 31, 2019, due to the increase in operating income as noted above. These same factors as noted above for the Adjusted EBITDAP contributed to the increased Adjusted EBITDAP margin year over year.

Liquidity and Capital Resources Our working capital needs are generally funded through our current cash and cash equivalents, cash flows from operations, and proceeds from the Securitization Facility. For the fiscal year ended March 31, 2021, we had a net cash outflow of $173.1 million from operating activities, a decrease of $269.8 million, compared with a net cash inflow of $96.7 million for the fiscal year ended March 31, 2020. Cash flows from operations were unfavorably impacted by increased disbursements to our suppliers relative to the receipts from our customers, as we were unable to reduce volumes of our material purchases at the same rates that our sales declined from the impacts of the COVID-19 pandemic. Cash flows included steady inventory levels and significantly lower accounts payable. Additionally, of the approximately $51.0 million in cash proceeds from the transfer of the assets and certain liabilities associated with the G650 wing supply chain activities, approximately $50.0 million of the cash proceeds were allocated to the settlement of existing relationships derived from operations and therefore are classified within operating cash flows. The remaining approximately $1.0 million of the cash proceeds were allocated to the productive assets transferred as part of the transaction and are classified within investing cash flows. Cash flows from operations began to recover in the second half of the fiscal year. Cash flows from operations also included approximately $40.0 million in the liquidation of prior period customer advances against current period deliveries. Interest payments were approximately $116.5 million for the year ended March 31, 2021, as compared with $99.4 million for the year ended March 31, 2020. The increase in interest payments was the result of higher interest rates and relative debt levels as a result of the financing activities described below.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document In March 2020, in response to anticipated headwinds resulting from the impact of the COVID-19 pandemic on the aerospace industry, including the impact on global air travel, we implemented certain cost reduction actions to improve our financial health, align capacity with expected demand, and ensure our long-term competitiveness. This included the reduction of overhead and indirect staff and temporary workers and the selective implementation of furloughs across our business to reduce costs while delivering on customer commitments. Through these initiatives, combined with reductions in travel, corporate events, and other expenses, we achieved our cost reduction goals in fiscal year 2021. We also completed certain previously announced

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document consolidation and shutdown initiatives with sunsetting programs within Aerospace Structures that resulted in cash outflows of approximately $20.0 million. Cash flows provided by investing activities for the fiscal year ended March 31, 2021, decreased $16.7 million from the fiscal year ended March 31, 2020, to cash used in investing activities of $9.3 million compared with cash provided by investing activities of $7.4 million. Cash flows provided by investing activities for the fiscal year ended March 31, 2021, included cash from the sale of assets and businesses of $15.9 million offset by capital expenditures of $25.2 million. Cash flows used in investing activities for the fiscal year ended March 31, 2020, included cash from the fiscal 2020 divestitures of $47.2 million offset by capital expenditures of $39.8 million. We currently expect capital expenditures in fiscal 2022 to be in the range of $30.0 million, of which approximately $22.0 million pertains to our core Systems & Support operating segment. The majority of our fiscal 2022 capital expenditures are capital investments designed to improve our manufacturing efficiency and expand our capabilities. Cash flows provided by financing activities for the fiscal year ended March 31, 2021, were $277.2 million, compared with cash flows provided by financing activities for the fiscal year ended March 31, 2020, of $293.7 million. In March, we drew on our Credit Facility (as defined below), bringing the outstanding balance as of March 31, 2020, to $400.0 million. This was done as part of a comprehensive precautionary approach to increase our cash position and maximize our financial flexibility, in light of the current volatility in the global markets resulting from the COVID-19 pandemic. In the year ended March 31, 2021, the following significant financing cash flow events occurred: • We issued $700.0 million of 8.875% Senior Secured First Lien Notes due 2024 (the “First Lien Notes”). • Using a portion of the proceeds from issuance of the First Lien Notes, we terminated the Revolving Credit Facility and fully repaid the $400.0 million borrowed thereunder. • We fully repaid the $75.0 million borrowed as of March 31, 2020, under our Receivables Securitization Facility. • We extinguished approximately $63.5 million of the outstanding balance under the 2022 Notes • We sold 9.2 million shares of common stock for net cash proceeds of approximately $145.4 million • As part of these transactions, we paid approximately $20.7 million in deferred financing costs. The remainder of financing cash flows pertain primarily to borrowings and payments under finance leases. As of March 31, 2021, we had $589.9 million of cash on hand and $34.2 million was available under our receivable securitization facility (the “Securitization Facility”) (subject to any additional constraints arising from the balance of eligible receivables at that time) after giving effect to approximately $27.8 million in outstanding letters of credit. We have taken a number of actions to improve liquidity. In March 2020, we suspended the declaration and/or payment of dividends until further notice. We have furloughed certain employees and announced reductions in force which were largely implemented in the first and fourth quarters of fiscal 2021. We have reduced discretionary spending as well as reduced or deferred research and development and capital expenditures. We are also working with our customers and supply chain to accelerate receipts and conserve cash. We have also deferred certain employer payroll tax payments pursuant to the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act. In September 2020, we submitted an application to the IRS requesting a change in the plan year for our U.S. pension plan. The change was designed to minimize the funding impact of the temporary market trough caused by the COVID-19 pandemic. The IRS approved our application. As a result, our projected required pension contributions for the next three fiscal years were reduced by approximately $50.0 million. In addition, the pension funding relief provisions of the American Rescue Plan Act (“ARPA”) further reduced our projected pension funding requirements by approximately an additional $200.0 million over the next six fiscal years. We expect to take advantage of additional programs if passed by the federal government. As disclosed above, subsequent to March 31, 2021, we completed the sale of our manufacturing operations in Milledgeville, Georgia, Rayong, Thailand, and Red Oak, Texas, receiving net proceeds of approximately $155.0 million. We intend to use approximately $120.0 million of the net proceeds to redeem approximately $113.0 million aggregate principal amount of the First Lien Notes at a redemption price of 106.656%, plus accrued and unpaid interest. The redemption is required by the terms of the First Lien Notes, and following the redemption, approximately $587.0 million aggregate principal amount of First Lien Notes will remain outstanding. The divestiture transactions will significantly reduce our cash receipts from customers as well as our contractual obligations as disclosed below, including reducing the risk of incurring cash flow losses on long-term fixed price contracts. We also expect that in the first quarter of fiscal 2022 we will use available cash to redeem all $236.5 million aggregate principal outstanding amount of our 2022 Notes at a redemption price of 100.000%, plus accrued and unpaid interest. Subsequent to this redemption, we will have no material outstanding indebtedness maturing before 2024. While we currently expect fiscal 2022 operations to result in net cash outflows due to liquidation of prior customer advances, losses on exit costs on our 747-8 program and customer settlement; we believe, based on an assessment of our current cash as presented on the accompanying consolidated balance sheet as of March 31, 2021, as well as current market conditions, that cash flows from operations and borrowings under our receivable securitization facility (the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document “Securitization Facility”) will be sufficient to meet anticipated cash requirements for our current operations for at least the next 12 months. We also believe, based on our current cash, our fiscal 2022 operating cash flow expectations, the expected recovery of cash flows from operations subsequent to fiscal 2022, the successful capital market transactions occurring during the year ended March 31, 2021, and the repayment of the 2022 Notes, that we have the ability to generate and obtain adequate amounts of cash to meet anticipated cash requirements for the foreseeable future. We are evaluating additional funding options from the U.S. government via the U.S. Treasury and various Federal Reserve programs. We are also considering various divestiture opportunities that should provide liquidity as well as opportunities to access credit and capital markets. There can be no assurance that such funding sources will be available to us on

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document terms favorable to us, if at all. We may also seek transactions to extend the maturity of our indebtedness, reduce leverage, or decrease interest expense. Such transactions could include one or more repurchases or exchanges of our outstanding indebtedness. These transactions could increase our total amount of secured indebtedness or be dilutive to stockholders. There can be no assurances if or when we will consummate any such transactions or the timing thereof. On August 17, 2020, we completed a series of refinancing transactions that are described below: • We issued $700.0 million principal amount of the First Lien Notes pursuant to an indenture among us, the Guarantor Subsidiaries (as defined below) and U.S. Bank National Association, as trustee (the “First Lien Notes Indenture”). The First Lien Notes were sold at 100% of the principal amount and have an effective interest yield of 8.875%. • We repaid the loans and other amounts outstanding under our revolving credit facility (the “Revolving Credit Facility”), which was governed by the Third Amended and Restated Credit Agreement, dated as of November 19, 2013 (as amended, the “Revolving Credit Agreement”) and terminated all commitment thereunder. The payment of $335.2 million was made using a portion of the proceeds from the issuance of the First Lien Notes. We initially cash collateralized the letters of credit issued under the Revolving Credit Agreement but now have the ability to issue letters of credit under the Securitization Facility. • We entered into amendments to the Securitization Facility. The August amendments removed the covenants that required us to maintain certain financial ratios. As of March 31, 2021, the maximum amount available under the Receivables Securitization Facility was $75.0 million, and we have the ability to reduce the facility amount to not less than $50.0 million. The actual amount available under the Securitization Facility at any point in time is dependent upon the balance of eligible accounts receivables as well as the amount of letters of credit outstanding. At March 31, 2021, there was $0.0 million outstanding under our Securitization Facility. Interest rates on the Securitization Facility are based on prevailing market rates for short-term commercial paper, plus a program fee and a commitment fee. On September 29, 2020, we entered into additional amendments to the Securitization Facility. The September amendments provide us with enhanced liquidity options by establishing a letter of credit facility under the Securitization Facility which effectively replaces a similar limited letter of credit facility under the Revolving Credit Facility. Pursuant to the letter of credit facility, we may request the Securitization Facility’s administrator to issue one or more letters of credit that will expire no later than 12 months after the date of issuance, extension or renewal, as applicable. The 2022 Notes and the 7.750% Senior Notes due August 15, 2025 (the “2025 Notes”) (collectively, the "Senior Notes") are our senior unsecured obligations and rank equally in right of payment with all of our other existing and future senior unsecured indebtedness and senior in right of payment to all of our existing and future subordinated indebtedness. The Senior Notes are guaranteed on a full, joint and several basis by each of the Guarantor Subsidiaries. Pursuant to the documentation governing the Senior Notes, we may redeem some or all of our Senior Notes prior to their stated maturities, subject to certain limitations set forth in the indenture governing the applicable Senior Notes and, in certain cases, subject to significant prepayment premiums. We are obligated to offer to repurchase the Senior Notes at specified prices as a result of certain change-of-control events and a sale of all or substantially all of our assets. These restrictions and prohibitions are subject to certain qualifications and exceptions. The indentures governing the Senior Notes, as well as Securitization Facility, contain covenants and restrictions that, among other things, limit our ability and the ability of any of the Guarantor Subsidiaries to (i) grant liens on our assets; (ii) make dividend payments, other distributions or other restricted payments; (iii) incur restrictions on the ability of the Guarantor Subsidiaries to pay dividends or make other payments or investments; (iv) enter into sale and leaseback transactions; (v) merge, consolidate, transfer or dispose of substantially all of their assets; (vi) incur additional indebtedness; (vii) use the proceeds from sales of assets, including capital stock of restricted subsidiaries (in the case of the Senior Notes); and (viii) enter into transactions with affiliates. We are currently in compliance with all covenants under our debt documents and expect to remain in compliance for the foreseeable future. For further information on our long-term debt, see Note 10. The 2022 Notes and 2025 Notes are our senior unsecured obligations and rank equally in right of payment with all of our other existing and future senior unsecured indebtedness and senior in right of payment to all of our existing and future subordinated indebtedness. The 2022 Notes and 2025 Notes are guaranteed on a full, joint and several basis by each of our existing and future domestic restricted subsidiaries that is a borrower under any of our credit facilities or that guarantees any of our debt or that of any of our restricted subsidiaries, in each case incurred under any of our credit facilities. Our only consolidated subsidiaries that are not guarantors of the First Lien Notes, 2022 Notes, the 2024 Notes and the 2025 Notes (the "Non-Guarantor Subsidiaries") are: (i) the receivables securitization special purpose entity, and (ii) the foreign operating subsidiaries.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The First Lien Notes, the 6.250% Senior Secured Notes due September 15, 2024 (the “2024 Notes”),and the guarantees are secured, subject to permitted liens, by second-priority liens on all of our assets and our subsidiary guarantors (the “Collateral”) that secure all of the indebtedness under certain hedging and cash management obligations. The First Lien Notes and the 2024 Notes and the guarantees are not secured by the assets of Non-Guarantor Subsidiaries. Some of our assets are excluded from the Collateral, including our real property assets.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The following tables present summarized financial information of the Company and the Guarantor Subsidiaries on a combined basis. The combined summarized financial information eliminates intercompany balances and transactions among the Company and the Guarantor Subsidiaries and equity in earnings and investments in any Guarantor Subsidiaries or Non-Guarantor Subsidiaries. The summarized financial information is provided in accordance with the reporting requirements of Rule 13-01 under SEC Regulation S-X for the issuer and Guarantor Subsidiaries.

Parent and Guarantor Summarized Financial Information March 31, Summarized Balance Sheet 2021 in thousands Assets Due from non-guarantor subsidiaries $ 441 Current assets 1,232,055 Noncurrent assets 748,480 Noncurrent receivable from non-guarantor subsidiaries 107,059

Liabilities Due to non-guarantor subisidiaries 14,556 Current liabilities 664,260 Noncurrent liabilities 2,556,915

Year Ended Summarized Statement of Operations March 31, 2021 in thousands Net sales to non-guarantor subsidiaries $ 6,301 Net sales to unrelated parties 1,745,186 Gross profit 364,607 Loss from continuing operations before income taxes (439,735) Net loss (442,132)

For the fiscal year ended March 31, 2020, we had a net cash inflow of $96.7 million from operating activities, an increase of $271.1 million, compared with a net cash outflow of $174.4 million for the fiscal year ended March 31, 2019. We liquidated approximately $89.0 million in prior period customer advances against current period deliveries. During the fiscal year ended March 31, 2019, we invested in inventory to support ramping and existing programs. Cash flows provided by investing activities for the fiscal year ended March 31, 2020, decreased $193.2 million from the fiscal year ended March 31, 2019. Cash flows provided by investing activities for the fiscal year ended March 31, 2020, included cash from the fiscal 2020 sales of assets and businesses of $47.2 million offset by capital expenditures of $39.8 million. Cash flows used in investing activities for the fiscal year ended March 31, 2019, included cash from the fiscal 2019 divestitures of $247.6 million, offset by capital expenditures of $47.1 million. Our expected future cash flows for the next five years for long-term debt, leases and other obligations are as follows:

Payments Due by Period Less than After Contractual Obligations Total 1 Year 1 - 3 Years 4 - 5 Years 5 Years (in thousands) Debt principal $1,982,321 $ 5,972 $ 242,673 $1,727,145 $ 6,531 Debt interest(1) 497,172 146,375 269,335 79,649 1,813 Operating leases 69,501 15,752 17,618 12,219 23,912 Purchase obligations 882,858 631,609 216,337 34,411 501 Total 3,431,852 799,708 745,963 1,853,424 32,757

(1) Includes fixed-rate interest only.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The above table includes approximately $207.7 million of total contractual obligations pertaining to the manufacturing operations located in Milledgeville, Georgia, Rayong, Thailand, and Red Oak, Texas, that, subsequent to the closing of these transactions in May, are no longer contractual obligations of the Company. Of the $207.7 million total contractual obligations, approximately $183.1 million represented purchase obligations, of which approximately 78% were expected to be paid in less than one year. The majority of the remaining $24.6 million contractual obligations associated with these divestitures pertained to operating leases. The above table excludes unrecognized tax benefits of $11.8 million as of March 31, 2021, since we cannot predict with reasonable certainty the timing of cash settlements with the respective taxing authorities. In addition to the financial obligations detailed in the table above, we also had obligations related to our benefit plans at March 31, 2021, as detailed in the following table. Our other postretirement benefits are not required to be funded in advance, so benefit payments are paid as they are incurred. Our expected net contributions and payments are included in the table below:

Other Pension Postretirement Benefits Benefits (in thousands) Projected benefit obligation at March 31, 2021 $ 2,230,248 $ 4,924 Plan assets at March 31, 2021 1,853,963 — Projected contributions by fiscal year 2022 1,597 3,375 2023 1,284 169 2024 1,273 161 2025 1,264 153 2026 1,242 143 Total 2022 - 2026 $ 6,660 $ 4,001

Current plan documents reserve our right to amend or terminate the plans at any time, subject to applicable collective bargaining requirements for represented employees.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES Critical accounting policies are those accounting policies that can have a significant impact on the presentation of our financial condition and results of operations, and that require the use of complex and subjective estimates based upon past experience and management's judgment. Because of the uncertainty inherent in such estimates, actual results may differ from these estimates. Below are those policies applied in preparing our consolidated financial statements that management believes are the most dependent on the application of estimates and assumptions. For additional accounting policies, refer to Note 2 to the accompanying consolidated financial statements.

Revenue Recognition and Contract Balances Our accounting policy regarding revenue recognition is disclosed in Note 2 to the consolidated financial statements. As described in Note 2, for certain contracts and performance obligations, we are required to exercise judgment when developing assumptions regarding expected total costs to fulfill performance obligations, variable consideration, and the standalone selling price of a performance obligation. These assumptions are most significant within the Aerospace Structures business segment because the size and long-term nature of our contracts with customers. Specifically, assumptions regarding the total costs require significant judgment with regard to materials, labor, and overhead costs that are affected by our ability to achieve technical requirements and schedule requirements, as well as our estimation of internal and subcontractor performance projections, anticipated volume, asset utilization, labor agreements, and inflation trends. We continually review and update our assumptions based on market trends and program performance. When we satisfy a performance obligation and recognize revenue over time, material changes in assumptions may result in positive or negative cumulative catch-up adjustments related to revenues previously recognized or, in some cases, forward loss contract reserves.

Goodwill and Intangible Assets

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Refer to Note 2 and Note 7 for details on our goodwill and intangible asset accounting policies. As disclosed in Note 7, as of March 31, 2021, Aerospace Structures had goodwill of $871.4 million which was fully impaired during fiscal year 2018. The goodwill of one of the reporting units within Systems & Support had goodwill of $66.1 million which was fully impaired during fiscal year 2020. No reporting units have goodwill with a material carrying value that is at risk of impairment as of March 31, 2021. We review identified intangible assets with definite lives and subject to amortization for impairment whenever events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Determining whether an impairment loss has occurred requires the use of our internal forecast to estimate future cash flows and the useful life over which these cash flows will occur. As disclosed in Note 2, in May 2020, we concluded that the planned divestitures of our composites manufacturing operations located in Milledgeville, Georgia and Rayong, Thailand, represented a significant change in the manner in which the related asset group was expected to be used and that the asset group therefore needed to be tested for recoverability and

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document impairment. We applied a discount rate of 15.0% to the estimated future excess earnings and cash flows of the asset group in order to estimate the fair value of the asset group as of the measurement date and recognized a total noncash impairment charge of $252.4 million, primarily allocated to definite-lived intangible assets.

Postretirement Plans Certain of our current and former employees participate in defined benefit pension and other postretirement defined benefit plans (collectively, referred to as “defined benefit plans”) in the United States, Canada, and the United Kingdom, which we sponsor. The determination of projected benefit obligations and the recognition of expenses related to defined benefit pension plans are dependent on various assumptions. The most significant of these assumptions are the discount rates and the long-term expected rates of return on plan assets. Actual results that differ from our assumptions are accumulated and amortized for each plan to the extent required over the estimated future life expectancy of plan participants.

Significant Assumptions We develop assumptions using relevant experience, in conjunction with market-related data for each plan. Assumptions are reviewed annually with third party consultants and adjusted as appropriate. Refer to Note 15 for details regarding the assumptions used to estimate projected benefit obligations and net periodic benefit cost as they pertain to our defined benefit pension plans.

Expected Return on Plan Assets We determine our expected return on plan assets by evaluating both historical returns and estimates of future returns. Specifically, we consider the plan’s actual historical annual return on assets and historical broad market returns over long-term time frames based on our strategic allocation, which is detailed in Note 15. Future returns are based on independent estimates of long-term asset class returns. Based on this approach, the weighted average long-term expected annual rate of return on assets was estimated at 7.94% for fiscal years 2021 and 2020.

Discount Rate The discount rate is used to calculate the present value of expected future benefit payments at the measurement date. A decrease in the discount rate increases the present value of benefit obligations and generally decreases pension expense. The discount rate assumption is based on current investment yields of high-quality fixed income investments during the retirement benefits maturity period. The pension discount rate is determined by considering an interest rate yield curve comprising AAA/AA bonds, with maturities between zero and thirty years, developed by the plan’s actuaries. Annual benefit payments are then discounted to present value using this yield curve to develop a single discount rate matching the plan’s characteristics. The discount rate assumption will change from measurement date to measurement date as market yields on high quality corporate bonds change.

Sensitivity Analysis Pension Expense A 25 basis point change in each of the long-term expected rate of return on plan assets and discount rate would have the following effect on the combined U.S. defined benefit pension plans’ pension income for the next 12 months:

(Decrease)/Increase in Pension Income 25 Basis Point 25 Basis Point Increase Decrease (In thousands) Expected long-term rate of return on plan assets $ (4,218) $ 4,218 Discount rate $ (586) $ 707

Projected Benefit Obligation Funded status is derived by subtracting the respective year-end values of the projected benefit obligations (“PBO”) from the fair value of plan assets. The sensitivity of the PBO to changes in the discount rate varies depending on the magnitude and direction of the change in the discount rate. Refer to Note 12 for a quantitative sensitivity analysis for the PBO.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Tax We follow ASC 740, Income Taxes, which prescribes a recognition threshold and measurement attribute criteria for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return, as well as guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document We recognize deferred tax assets and liabilities based on the differences between the financial statement basis and the tax basis of assets, liabilities, net operating losses and tax carryforwards. A valuation allowance is required to be recognized to reduce the recorded deferred tax asset to the amount that will more likely than not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income by jurisdiction during the periods in which those temporary differences become deductible or when carryforwards can be utilized. We consider the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in this assessment. As of March 31, 2021, we have a valuation allowance against substantially all of our net deferred tax assets given the insufficient positive evidence to support the realization of our deferred tax assets. A reduction in the valuation allowance could result in a significant decrease in income tax expense in the period that the reduction is recorded. However, the exact timing and amount of the reduction in our valuation allowance are unknown at this time and will be subject to the earnings level we achieve as well as our projected income in future periods.

Recently Issued Accounting Pronouncements Refer to Note 2 for disclosure of the effects of recently issued accounting guidance.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk Commodity Price Risk and Inflation Risk Some contracts with our suppliers for raw materials, component parts and other goods are short-term contracts, which are subject to termination on a relatively short-term basis. The prices of our raw materials and component parts fluctuate depending on market conditions, and substantial increases in prices, whether due to significant inflationary pressures or other market factors, could increase our operating costs, which, as a result of our fixed-price contracts, we may not be able to recoup through increases in the prices of our products. We generally do not employ forward contracts or other financial instruments to hedge commodity price risk, although we continue to review a full range of business options focused on strategic risk management for all material commodities. Any failure by our suppliers to provide acceptable raw materials, components, kits or subassemblies could adversely affect our production schedules and contract profitability. We assess qualification of suppliers and continually monitor them to control risk associated with such supply base reliance. To a lesser extent, we also are exposed to fluctuations in the prices of certain utilities and services, such as electricity, natural gas, chemicals and freight. We utilize a range of long-term agreements to minimize procurement expense and supply risk in these areas, and we strive to minimize the effects of inflation through cost containment, productivity improvements, and, where possible, price increases. We do not believe that inflation has had a material effect on our business, financial condition, or results of operations to date..

Foreign Exchange Risk In addition, even when revenues and expenses are matched, we must translate foreign denominated results of operations, assets and liabilities for our foreign subsidiaries to U.S. dollars in our consolidated financial statements. Consequently, increases and decreases in the value of the U.S. dollar as compared with the respective foreign currencies will affect our reported results of operations and the value of our assets and liabilities on our consolidated balance sheets, even if our results of operations or the value of those assets and liabilities has not changed in its original currency. These transactions could significantly affect the comparability of our results between financial periods and/or result in significant changes to the carrying value of our assets, liabilities and stockholders' equity. We are subject to foreign currency exchange rate risk relating to receipts from customers and payments to suppliers in foreign currencies. We use foreign currency forward contracts to hedge the price risk associated with forecasted foreign denominated payments related to our ongoing business. Foreign currency forward contracts are sensitive to changes in foreign currency exchange rates. At March 31, 2021, a 10% change in the exchange rate in our portfolio of foreign currency contracts would not have material impact on our unrealized gains. Consistent with the use of these contracts to neutralize the effect of exchange rate fluctuations, such unrealized losses or gains would be offset by corresponding gains or losses, respectively, in the remeasurement of the underlying transactions being hedged. When taken together, these forward currency contracts and the offsetting underlying commitments do not create material market risk.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Interest Rate Risk Our primary exposure to market risk consists of changes in interest rates on borrowings. An increase in interest rates would adversely affect our operating results and the cash flow available after debt service to fund operations and expansion. In addition, an increase in interest rates would adversely affect our ability to pay dividends on our common stock, if permitted to do so under certain of our debt arrangements, including the Amended Credit Agreement. We manage exposure to interest rate fluctuations by optimizing the use of fixed and variable rate debt. As of March 31, 2021, approximately 100% of our debt was fixed-rate debt. Our financing policy states that we generally maintain between 50% and 75% of our debt as fixed-rate debt on a fully leveraged basis. The information below summarizes our market risks associated with debt obligations and should be read in conjunction with Note 10 of the notes to the accompanying consolidated financial statements. The following table presents principal cash flows and the related interest rates. Fixed interest rates disclosed represent the weighted average rate as of March 31, 2021. Variable interest rates disclosed fluctuate with the LIBOR, federal funds rates, and other weekly rates and represent the weighted average rate at March 31, 2021.

Expected Years of Maturity

Next 13 - 24 25 - 36 37 - 48 49 - 60 12 Months Months Months Months Months Thereafter Total Fixed rate cash flows (in thousands) $ 5,972 $239,883 $2,790 $1,226,364 $500,781 $ 6,531 $1,982,321 Weighted average interest rate (%) 7.40% 7.32% 7.70% 5.77% 5.88% 7.33% Variable rate cash flows (in thousands) $ — $ — $ — $ — $ — $ — Weighted average interest rate (%) —% —% —% —% —% —%

There are no other significant market risk exposures.

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Triumph Group, Inc.

Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Triumph Group, Inc. (the Company) as of March 31, 2021 and 2020, the related consolidated statements of operations, comprehensive loss, stockholders' deficit and cash flows for each of the three years in the period ended March 31, 2021, and the related notes and financial statement schedule listed in the Index at Item 15(a) (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at March 31, 2021 and 2020, and the results of its operations and its cash flows for each of the three years in the period ended March 31, 2021, in conformity with U.S. generally accepted accounting principles. We also have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of March 31, 2021, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated May 20, 2021, expressed an unqualified opinion thereon.

Change in Accounting Principle As discussed in Note 1 to the consolidated financial statements, the Company changed its method of calculating the expected return on the fixed income assets held within the plan assets of its qualified U.S. defined benefit plan during the year ended March 31, 2021.

Basis for Opinion These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures include examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

Revenue Recognition for Performance Obligations Satisfied Over Time

Description of As described in Notes 2 and 4 of the consolidated financial statements, the Company’s Aerospace the Matter Structures reportable segment recognizes revenue for performance obligations that are satisfied over time using an input method with revenue recognized proportionately as costs are incurred relative to the total expected costs to satisfy the performance obligation (“estimate-at-completion”). This method of revenue recognition requires management to continuously update estimate-at-completion costs,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document changes to which affect the amount of profit and loss recognized each period. During fiscal year 2021, approximately $747 million of the revenue for Aerospace Structures represent revenues from performance obligations that have been satisfied over time. Auditing the revenue recognition for performance obligations satisfied over time within the Aerospace Structures reportable segment, including its estimate-at-completion analyses, was especially challenging due to the significant judgment involved in evaluating the key assumptions, including materials, labor and overhead costs, made by management in its estimates of the total expected costs to satisfy the performance obligations. The estimate-at-completion analyses and resultant forecasted profit or loss of each performance obligation are sensitive to assumptions surrounding the Company’s ability to achieve the technical requirements, schedule requirements, internal and subcontractor performance projections, anticipated business volume, anticipated asset utilization, and anticipated labor agreements, as well as the accuracy of estimated inflation trends, each of which can materially change the key cost assumptions.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document How We We obtained an understanding, evaluated the design and tested the operating effectiveness of Addressed the controls over the Company’s process to recognize revenue for performance obligations that are Matter in Our satisfied over time within the Aerospace Structures reportable segment. In particular, we tested Audit controls over management’s review of the key assumptions in the estimate-at-completion analyses, which are describe above. We also tested management’s controls over the completeness and accuracy of the data used in the estimate-at-completion analyses.

To test the recognition of revenue for performance obligations that are satisfied over time within the Aerospace Structures reportable segment, our audit procedures included, among others, evaluating the key assumptions used to develop the estimate-at-completion analyses and the completeness and accuracy of the underlying data used in management’s calculations. For example, we compared estimated costs to satisfy performance obligations in the estimate-at-completion analyses to historical results and source documentation including supplier agreements, current and projected labor rates, expected inflation rates, as well as overhead costs including rent expense and depreciation of long-lived assets. We recalculated the revenue recognized and resulting profit or loss based on actual costs and estimate-at-completion assumptions. When testing the significant assumptions, we involved our engineering specialists to assist in evaluating key judgments including cost projections related to management’s determination of estimate-at-completion costs. In addition, we assessed the accuracy of the Company's historical estimates by comparing them to actual costs incurred. When there was a significant change in estimate, we inspected underlying evidence for the reason for the change in the estimate and the timing of the change in estimate.

Realizability of Deferred Tax Assets

Description of As described in Note 12 of the consolidated financial statements, at March 31, 2021 the Company had the Matter deferred tax assets for deductible temporary differences and tax attributes of $56 million (net of a $513 million valuation allowance). Deferred tax assets are reduced by a valuation allowance if, based upon the weight of all available evidence, it is more likely than not that some portion, or all, of the deferred tax assets will not be realized.

Auditing the Company’s analysis of the realizability of its deferred tax assets required complex auditor judgment because the amounts are material to the financial statements and the assessment process involves significant judgment to apply changes in the tax law, determine the future reversal pattern of existing taxable temporary differences and other assumptions of future taxable income that may be affected by future market or economic conditions.

How We We obtained an understanding, evaluated the design, and tested the operating effectiveness of Addressed the controls that address the risks of material misstatement relating to the realizability of deferred tax Matter in Our assets. This included controls over management’s evaluation and application of the effects of Audit changes in the tax law and the scheduling of the future reversal pattern of existing taxable temporary differences that have been identified as a source of future taxable income.

To test the Company’s assessment of the realizability of deferred tax assets and the resulting valuation allowance, our audit procedures included, among others, testing the Company’s calculation of future taxable income from the reversal of existing temporary taxable differences and evaluating the scheduling of the reversal patterns. In addition, we compared taxable income in prior carryback years, if any, to the Company’s income tax returns; considered the feasibility of tax planning strategies; and, evaluated projected future taxable income exclusive of reversing temporary differences and carryforwards. We involved our tax professionals to assist in evaluating the application of tax law, including any changes in the tax law, in the Company’s consideration of the sources of future taxable income.

Description of At March 31, 2021, the Company’s aggregate defined benefit pension obligation was $2.2 billion the Matter and the net periodic benefit income was $38 million. As described in Note 15 of the consolidated financial statements, the Company updates the estimates used to measure the defined benefit pension obligation and plan assets in the fourth quarter and upon a remeasurement event to reflect the actual return on plan assets and updated actuarial assumptions.

Auditing the defined benefit pension obligations and the related net periodic benefit income required complex auditor judgment and technical expertise due to the highly judgmental nature of the actuarial assumptions (e.g., discount rate, mortality rate, expected return on plan assets) used in the measurement process. These assumptions had a significant effect on the projected benefit obligation and the net periodic benefit income.

How We We obtained an understanding, evaluated the design and tested the operating effectiveness of Addressed the controls over management’s determination of the defined benefit pension obligation calculations, the Matter in Our significant actuarial assumptions described above and the data inputs provided to the Company’s Audit actuarial specialists.

To test the defined benefit pension benefit obligation, and the related net periodic benefit income, our audit procedures included, among others, evaluating the methodology used, the significant actuarial assumptions described above, the underlying data used by management and its actuaries and the appropriateness of management’s judgments in applying the authoritative accounting literature. We compared the actuarial assumptions used by management to historical trends and evaluated the change in the defined benefit pension from prior year resulting from the change in service cost, interest cost, benefit payments, actuarial gains and losses, participant contributions, special termination benefits and plan amendments. In addition, we involved our actuarial specialists to assist in evaluating management’s methodology for determining the actuarial assumptions. For example, we evaluated management’s methodology for determining the discount rate that reflects the maturity and duration of the benefit payments and is used to measure the defined benefit pension obligation. As part of this assessment, we compared the projected defined benefit pension obligation cash flows to prior year amounts and compared the current year benefits paid to the prior year projected cash flows. To evaluate the mortality rate, we assessed whether the information is consistent with publicly available information, and whether any market data adjusted for entity- specific adjustments were applied. We also tested the completeness and accuracy of the underlying data, including the participant data provided to the Company’s actuarial specialists. Lastly, to evaluate the expected return on plan assets, we assessed whether management’s assumptions were consistent with a range of returns for a portfolio of comparative investments.

We have served as the Company’s auditor since 1993.

/s/ Ernst & Young LLP

Philadelphia, Pennsylvania May 20, 2021

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document TRIUMPH GROUP, INC. Consolidated Balance Sheets (Dollars in thousands, except per share data)

March 31, 2021 2020 ASSETS Current assets: Cash and cash equivalents $ 589,882 $ 485,463 Trade and other receivables, less allowance for credit losses of $8,095 and $4,293 194,066 359,487 Contract assets 134,638 244,417 Inventory, net 400,366 452,976 Prepaid expenses and other current assets 19,206 19,289 Assets held for sale 216,276 — Total current assets $ 1,554,434 1,561,632 Property and equipment, net 211,369 418,141 Goodwill 521,638 513,527 Intangible assets, net 102,453 381,968 Other, net 61,041 105,065 Total assets $ 2,450,935 $ 2,980,333 LIABILITIES AND STOCKHOLDERS' DEFICIT Current liabilities: Current portion of long-term debt $ 5,247 $ 7,336 Accounts payable 179,473 457,694 Contract liabilities 204,379 295,320 Accrued expenses 271,160 227,403 Liabilities related to assets held for sale 58,108 — Total current liabilities $ 718,367 987,753 Long-term debt, less current portion 1,952,296 1,800,171 Accrued pension and other postretirement benefits 384,256 660,065 Deferred income taxes 7,491 7,439 Other noncurrent liabilities 207,378 306,169 Stockholders' deficit: Common stock, $.001 par value, 100,000,000 shares authorized, 64,488,674 and 52,460,920 shares issued; 64,185,001 and 51,858,089 shares outstanding 64 52 Capital in excess of par value 978,272 804,830 Treasury stock, at cost, 303,673 and 602,831 shares (12,606) (36,217) Accumulated other comprehensive loss (530,192) (746,448) Accumulated deficit (1,254,391) (803,481) Total stockholders' deficit (818,853) (781,264) Total liabilities and stockholders' deficit $ 2,450,935 $ 2,980,333

SEE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document TRIUMPH GROUP, INC. Consolidated Statements of Operations (In thousands, except per share data)

Year ended March 31, 2021 2020 2019 Net sales $ 1,869,719 $ 2,900,117 $ 3,364,930 Operating costs and expenses: Cost of sales (exclusive of depreciation shown separately below) 1,476,266 2,307,393 2,924,920 Selling, general and administrative 215,962 257,529 298,386 Depreciation and amortization 93,334 138,168 149,904 Legal judgment gain, net of expenses — (9,257) — Impairment of long-lived assets 252,382 — — Impairment of goodwill — 66,121 — Restructuring 53,224 25,340 31,098 Loss on sale of assets and businesses 104,702 56,916 235,301 2,195,870 2,842,210 3,639,609 Operating (loss) income (326,151) 57,907 (274,679) Non-service defined benefit income (49,519) (40,587) (56,726) Interest expense and other, net 171,397 122,129 114,619 Loss from continuing operations before income taxes (448,029) (23,635) (332,572) Income tax expense (benefit) 2,881 5,798 (5,426) Net loss $ (450,910) $ (29,433) $ (327,146) Loss per share—basic: Net loss $ (8.55) $ (0.58) $ (6.58) Weighted average common shares outstanding—basic 52,739 50,494 49,698 Loss per share—diluted: Net loss $ (8.55) $ (0.58) $ (6.58) Weighted average common shares outstanding—diluted 52,739 50,494 49,698

SEE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document TRIUMPH GROUP, INC. Consolidated Statements of Comprehensive Loss (in thousands)

Year ended March 31, 2021 2020 2019 Net loss $ (450,910) $ (29,433) $ (327,146) Other comprehensive income (loss): Foreign currency translation adjustment 19,884 (13,439) 10,077 Defined benefit pension plans and other postretirement benefits: Amounts arising during the period - net of tax (expense) benefit Prior service credit (cost), net of taxes of $0, $0, and $0, respectively — 94,182 (1,139) Actuarial gain (loss), net of taxes of $0, $0, and $0, respectively 168,701 (303,017) (120,161) Reclassification to net loss - net of expense (benefit) Amortization of net loss, net of taxes of $0, $0, and $(656), respectively 26,483 49,290 6,314 Recognized prior service credits, net of taxes of $0, $0, and $0, respectively (4,130) (54,280) (8,274) Total defined benefit pension plans and other postretirement benefits, net of taxes 191,054 (213,825) (123,260) Cash flow hedges: Unrealized gain (loss) arising during the period, net of tax benefit of $0, $0, and $(228), respectively 5,891 (1,611) 30 Reclassification of loss included in net earnings, net of tax expense of $0, $0, and $228, respectively (573) (1,562) (1,282) Net unrealized gain (loss) on cash flow hedges, net of tax 5,318 (3,173) (1,252) Total other comprehensive income (loss) 216,256 (230,437) (114,435) Total comprehensive loss $ (234,654) $ (259,870) $ (441,581)

SEE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document TRIUMPH GROUP, INC. Consolidated Statements of Stockholders' Equity (Deficit) (Dollars in thousands)

Accumulated Retained Common Capital in Other Earnings Outstanding Stock Excess of Treasury Comprehensive (Accumulated Shares All Classes Par Value Stock Loss Deficit) Total March 31, 2018 49,669,848 $ 51 $851,280 $(179,082) $ (401,576) $ 179,861 $ 450,534 Net loss — — — — — (327,146) (327,146) Adoption of ASC 606 — — — — — (585,015) (585,015) Foreign currency translation adjustment — — — — 10,077 — 10,077 Pension liability adjustment, net of income taxes of ($288) — — — — (123,260) — (123,260) Change in fair value of foreign currency hedges, net of income taxes of $11 — — — — (1,252) — (1,252) Cash dividends ($0.16 per share) — — — — — (7,971) (7,971) Share-based compensation 186,572 — (1,448) 11,707 — — 10,259 Repurchase of restricted shares for minimum tax obligation (42,146) — — (860) — — (860) Employee stock purchase plan 72,994 — (3,354) 4,675 — — 1,321 Other — 1 21,067 4,406 — (25,474) — March 31, 2019 49,887,268 52 867,545 (159,154) (516,011) (765,745) (573,313) Net loss — — — — — (29,433) (29,433) Adoption of ASC 842 — — — — — (225) (225) Foreign currency translation adjustment — — — — (13,439) — (13,439) Pension liability adjustment, net of income taxes of ($656) — — — — (213,825) — (213,825) Change in fair value of foreign currency hedges, net of income taxes of $228 — — — — (3,173) — (3,173) Cash dividends ($0.16 per share) — — — — (8,078) (8,078) Share-based compensation 264,658 — (5,508) 16,222 — — 10,714 Repurchase of restricted shares for minimum tax obligation (69,601) — — (1,442) — — (1,442) Employee stock purchase plan 45,061 — (1,811) 2,761 — — 950 Contribution of treasury shares to pension plan 1,730,703 — (55,396) 105,396 — — 50,000 March 31, 2020 51,858,089 52 804,830 (36,217) $ (746,448) (803,481) (781,264) Net loss — — — — — (450,910) (450,910)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Foreign currency translation adjustment — — — — 19,884 — 19,884 Pension liability adjustment, net of income taxes of $0 — — — — 191,054 — 191,054 Change in fair value of foreign currency hedges, net of income taxes of $0 — — — — 5,318 — 5,318 Share-based compensation 288,350 — (6,250) 18,695 — — 12,445 Repurchase of restricted shares for minimum tax obligation (99,082) — — (1,285) — — (1,285) Employee stock purchase plan 109,890 — (5,344) 6,201 — — 857 Contribution of common stock to pension plan, net of issuance costs 2,849,002 3 39,662 — — — 39,665 Issuance of common stock - at the market offering, net of issuance costs 9,178,752 9 145,374 — — — 145,383 March 31, 2021 64,185,001 $ 64 $978,272 $ (12,606) $ (530,192) $ (1,254,391) $(818,853)

SEE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document TRIUMPH GROUP, INC. Consolidated Statements of Cash Flows (Dollars in thousands)

Fiscal Year Ended March 31 2021 2020 2019 Operating Activities Net loss $ (450,910) $ (29,433) $ (327,146) Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Depreciation and amortization 93,334 138,168 149,904 Impairment of long-lived assets and goodwill 252,382 66,121 — Amortization of acquired contract liability (38,564) (75,286) (67,314) Loss on sale of assets and businesses 104,702 56,916 235,301 Curtailments and special termination benefits gain, net — 14,293 4,032 Other amortization included in interest expense 23,759 11,157 8,770 Provision for (recovery of) credit losses 4,853 1,554 (495) (Benefit) provision for deferred income taxes (176) 2,823 (7,939) Share-based compensation 12,701 11,062 10,259 Changes in other assets and liabilities, excluding the effects of acquisitions and divestitures: Trade and other receivables 126,294 5,001 (89,728) Contract assets 46,841 50,440 65,191 Inventories 35,412 (48,802) (15,930) Prepaid expenses and other current assets (310) 16,376 (3,144) Accounts payable, accrued expenses, and contract liabilities (330,992) (61,338) (71,767) Accrued pension and other postretirement benefits (51,692) (66,519) (74,532) Other, net (753) 4,133 10,118 Net cash (used in) provided by operating activities (173,119) 96,666 (174,420) Investing Activities Capital expenditures (25,178) (39,834) (47,099) Proceeds from sale of assets and businesses 15,888 47,229 247,647 Net cash (used in) provided by investing activities (9,290) 7,395 200,548 Financing Activities Net (decrease) increase in revolving credit facility (400,000) 185,000 102,113 Proceeds from issuance of long-term debt 713,900 585,580 54,600 Retirement of debt and finance lease obligations (160,035) (449,650) (113,425) Payment of deferred financing costs (20,716) (17,718) (1,982) Sales of common stock, net of issuance costs 145,383 — — Dividends paid — (8,078) (7,971) Repurchase of restricted shares for minimum tax obligations (1,285) (1,442) (860) Net cash provided by financing activities 277,247 293,692 32,475 Effect of exchange rate changes on cash 9,581 (5,097) (1,615) Net change in cash and cash equivalents 104,419 392,656 56,988 Cash and cash equivalents at beginning of period 485,463 92,807 35,819 Cash and cash equivalents at end of period $ 589,882 $ 485,463 $ 92,807

SEE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

1. BACKGROUND AND BASIS OF PRESENTATION Triumph Group, Inc. ("Triumph") is a Delaware corporation which, through its operating subsidiaries, designs, engineers, manufactures and sells products for the global aerospace OEMs of aircraft and aircraft components and repairs and overhauls aircraft components and accessories for commercial airline, air cargo carrier and military customers on a worldwide basis. Triumph and its subsidiaries (collectively, the "Company") are organized based on the products and services that they provide. The Company has two reportable segments: Systems & Support and Aerospace Structures. Systems & Support consists of the Company’s operations that provide integrated solutions, including design, development, and support of proprietary components, subsystems and systems, as well as production of complex assemblies using external designs. Capabilities include hydraulic, mechanical and electromechanical actuation, power and control; a complete suite of aerospace gearbox solutions, including engine accessory gearboxes and helicopter transmissions; active and passive heat exchange technology; fuel pumps, fuel metering units and Full Authority Digital Electronic Control fuel systems; hydromechanical and electromechanical primary and secondary flight controls. Systems & Support also provides full life cycle solutions for commercial, regional and military aircraft. The Company’s extensive product and service offerings include full post-delivery value chain services that simplify the MRO supply chain. Through its ground support equipment maintenance, component MRO and postproduction supply chain activities, Systems & Support is positioned to provide integrated planeside repair solutions globally. Capabilities include metallic and composite aircraft structures; nacelles; thrust reversers; interiors; auxiliary power units; and a wide variety of pneumatic, hydraulic, fuel and mechanical accessories. Repair services generally involve the replacement and/or remanufacturing of parts, which is similar to the original manufacture of the part. The processes that the Company performs related to repair and overhaul services are essentially the repair of wear parts or replacement of parts that are beyond economic repair. The repair service generally involves remanufacturing a complete part or a component of a part. Aerospace Structures consists of the Company’s operations that supply commercial, business, regional and military manufacturers with large metallic and composite structures and aircraft interior systems, including air ducting and thermal acoustic insulations systems. Products include wings, wing boxes, fuselage panels, horizontal and vertical tails, subassemblies such as floor grids, and aircraft interior systems, including air ducting and thermal acoustic insulations systems. Aerospace Structures also has the capability to engineer detailed structural designs in metal and composites. Capabilities include advanced composite and interior structures, joining processes such as welding, autoclave bonding, and conventional mechanical fasteners. The accompanying consolidated financial statements include the accounts of Triumph and its wholly-owned subsidiaries. Intercompany accounts and transactions have been eliminated from the consolidated financial statements. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Standards Recently Implemented Adoption of ASU 2016-13 In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU modifies the measurement of expected credit losses of certain financial instruments. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The amendments in this ASU should be applied on a modified retrospective basis to all periods presented. The Company adopted ASU 2016-13 effective April 1, 2020, and the impact on its consolidated financial statements was not significant. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements by removing, modifying or adding certain disclosures. ASU 2018-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The Company adopted ASU 2018-13 effective April 1, 2020, and the adoption did not have a significant impact on its consolidated financial statement disclosures. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans, which modifies the annual disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for annual

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Triumph Group, Inc. Notes to Consolidated Financial Statements (Dollars in thousands, except per share data) periods ending after December 15, 2020, with early adoption permitted. The amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company adopted ASU 2018-14 effective April 1, 2020, and the adoption did not have a significant impact on its consolidated financial statement disclosures.

Standards Issued Not Yet Implemented In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU modifies ASC 740, Income Taxes to simplify the accounting for income taxes. ASU 2019-12 is effective for fiscal years beginning after December 15, 2020, with early adoption permitted. The Company will adopt and implement this ASU for its fiscal year beginning April 1, 2021. The adoption is not expected to have a material impact on the Company’s financial position or results of operations.

Impact of Change in Accounting Principle Effective April 1, 2020, the Company changed its method of accounting for the determination of the market-related value of assets (“MRVA”) for a class of assets (fixed income securities) within the qualified U.S. defined benefit plan (the “Plan”) which is used in determining the expected return on asset component of net periodic benefit income. This class of assets is composed solely of the fixed income securities asset class held in the portfolio for the Plan, which provides a natural hedge (liability-hedging assets) against the changes in the Plan’s liability due to changes in market interest rates. Refer to Note 15 for the Company’s fair value disclosure by asset classification. The Company’s previous method of accounting was to calculate the MRVA for all the Plan’s assets recognizing investment gains and losses into the MRVA over a five-year period. The Company has changed its method of accounting and elected to use the fair value of its fixed income assets, which represent approximately 44% of the Plan’s assets as of the effective date of the change in accounting principle, to determine the MRVA. This change in accounting principle is preferable as it results in an expected return on asset component of net periodic benefit income that more accurately reflects the changes in the fair values of the fixed income securities. No change is being made to the accounting principle for the other classes of pension assets, which represent the remaining 56% of the pension asset portfolio for the Plan. The gains and losses for these other plan assets will continue to be amortized into the MRVA over a five-year period. The change in accounting principle requires retrospective application and prospective disclosure. The Company applied the change effective April 1, 2020, and recorded a cumulative adjustment to equity as of the earliest period presented. The tables below represent the impact of this change on the consolidated statements of operations (including earnings per share) and the consolidated statements of comprehensive loss for the periods presented below. The change in accounting principle had no impact on the consolidated statements of cash flows for these periods. The tables below represent the impact of the change in accounting principle on the consolidated statement of operations and the consolidated statements of comprehensive loss for the year ended March 31, 2021.

Year Ended March 31, 2021 As Reported (With Impact of Change) Change Without Change Non-service defined benefit income $ (49,519) $ (6,112) $ (43,407) Loss before income taxes (448,029) 6,112 (454,141) Income tax expense 2,881 - 2,881 Net loss $ (450,910) $ 6,112 $ (457,022)

Net Loss per share - basic & diluted Basic $ (8.55) $ 0.12 $ (8.67) Diluted $ (8.55) $ 0.12 $ (8.67)

Defined benefit pension plans and other postretirement benefits: Total defined benefit pension plans and other postretirement benefits, net of taxes $ 191,054 $ (6,112) 197,166 Total other comprehensive income $ 216,256 $ (6,112) 222,368

The table below represents the impact of the change in accounting principle on the consolidated balance sheet as of March 31, 2021.

As Reported (With Change), Impact of Without Change, Stockholders' deficit: March 31, 2021 Change March 31, 2021 Accumulated other comprehensive loss $ (530,192) $ (33,132) (497,060) Accumulated deficit $ (1,254,391) $ 33,132 (1,287,523) Total stockholders' deficit $ (818,853) $ - (818,853)

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Cash and Cash Equivalents Cash equivalents consist of highly liquid investments with a maturity of three months or less at the time of purchase. Fair value of cash equivalents approximates carrying value.

Trade and Other Receivables, net Trade and other receivables are recorded net of an allowance for expected credit losses. Trade and other receivables include amounts billed and currently due from customers and amounts retained by the customer pending contract completion. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. The Company pools receivables that share underlying risk characteristics and records the allowance for expected credit losses based on a combination of prior experience, current economic conditions and management’s expectations of future economic conditions, and specific collectibility matters when they arise. The Company writes off balances against the allowance for expected credit losses when collectibility is deemed remote. The Company's trade and other receivables are exposed to credit risk; however, the risk is limited due to the diversity of the customer base. For the years ended March 31, 2021 and 2020, credit loss expense and write-offs were immaterial. Trade and other receivables, net composed of the following:

Goodwill and Intangible Assets The Company accounts for goodwill and intangible assets in accordance with ASC 350, Intangibles—Goodwill and Other. Under ASC 350, goodwill and intangible assets with indefinite lives are not amortized; rather, they are tested for impairment on at least an annual basis. Intangible assets with finite lives are amortized over their useful lives. The Company assesses whether goodwill impairment exists using both the qualitative and quantitative assessments. The qualitative assessment involves determining whether events or circumstances exist that indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. If based on this qualitative assessment the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount or if the Company elects not to perform a qualitative assessment, a quantitative assessment is performed as required by ASC 350 to determine whether a goodwill impairment exists at the reporting unit. The quantitative test is used to compare the carrying amount of the reporting unit's assets to the fair value of the reporting unit. If the fair value exceeds the carrying value, no further evaluation is required, and no impairment loss is recognized. If the carrying amount exceeds the fair value, then an impairment loss occurs. The impairment is measured by using the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document amount by which the carrying value exceeds the fair value not to exceed the amount of recorded goodwill. The determination of the fair value of its reporting units is based, among other things, on estimates of future operating performance of the reporting unit being valued. The Company is required to complete an impairment test for goodwill and record any resulting impairment losses at least annually. Changes in market conditions, among other factors, may have an impact on these estimates and require interim impairment assessments. When performing the quantitative impairment test, the Company's methodology includes the use of an income approach which discounts future net cash flows to their present value at a rate that reflects the Company's cost of capital, otherwise known as the discounted cash flow method ("DCF"). These estimated fair values are based on estimates of future cash flows of the businesses.

Factors affecting these future cash flows include the continued market acceptance of the products and services offered by the businesses, the development of new products and services by the businesses and the underlying cost of development, the future cost structure of the businesses and future technological changes. The Company also incorporates market multiples for comparable companies in determining the fair value of its reporting units. Any such impairment would be recognized in full in the reporting period in which it has been identified. The fair value estimates resulting from the application of these methodologies are based on inputs classified within Level 3 of the fair value hierarchy, as described below. During the fourth quarter of the fiscal year ended March 31, 2021, the Company performed its annual goodwill impairment assessment for each of its reporting units with no impairment identified. In fiscal 2020, at March 31, 2020, the Company identified indicators of impairment due to the decline in the Company’s share price as well as potential negative impacts due to the uncertainty of the impact of the COVID-19 pandemic. As a result of these indicators, the Company performed an interim assessment of goodwill, which included using a combination of both market and income approaches to estimate the fair value of each reporting unit. The Company concluded that its Product Support reporting unit had a fair value that was lower than its carrying value by an amount that exceeded the remaining goodwill for the reporting unit. Therefore, the Company recorded a noncash impairment charge during the fiscal quarter ended March 31, 2020, of $66,121, which is presented on the consolidated statements of operations as “Impairment of goodwill” for the fiscal year ended March 31, 2020. The decline in fair value was the result of expected declines in revenues from MRO services and the uncertainty in the rate and timing of recovery and therefore the timing of associated earnings and cash flows. Finite-lived intangible assets are amortized over their useful lives ranging from 7 to 30 years. The Company continually evaluates whether events or circumstances have occurred that would indicate that the remaining estimated useful lives of long-lived assets, including intangible assets, may warrant revision or that the remaining balance may not be recoverable. Long-lived assets are evaluated for indicators of impairment. When factors indicate that long-lived assets, including intangible assets, should be evaluated for possible impairment, an estimate of the related undiscounted cash flows over the remaining life of the long-lived assets, including intangible assets, is used to measure recoverability based on the primary asset of the asset group. Some of the more important factors management considers include the Company's financial performance relative to expected and historical performance, significant changes in the way the Company manages its operations, negative events that have occurred, and negative industry and economic trends. If the estimated undiscounted cash flows are less than the carrying amount, measurement of the impairment will be based on the difference between the carrying value and fair value of the asset group, generally determined based on the present value of expected future cash flows associated with the use of the asset. As disclosed in Note 3, in May 2020, the Company’s Board of Directors committed to a plan (i) to sell its composites manufacturing operations located in Milledgeville, Georgia, and Rayong, Thailand, and (ii) to transfer the assets and certain liabilities associated with its Gulfstream G650 wing supply chain activities (as disclosed in Note 3, this transaction closed in August 2020). These planned divestitures represent the divestiture of certain assets and liabilities of an operating business within the Aerospace Structures segment that the Company has identified as an asset group pursuant to the provisions of ASC 360, Property, Plant, and Equipment. As a result, as of May 31, 2020, the Company concluded that the planned divestitures represented a significant change in the manner in which the related asset group was expected to be used, and that the asset group therefore needed to be tested for recoverability. The asset group primarily consists of working capital, fixed assets and definite-lived intangible assets. The Company first determined that the relevant long-lived asset group was not recoverable by comparing the undiscounted cash flows expected to be generated by the long-lived asset group to the carrying value of the asset group. As a result, the Company estimated the fair value of the long-lived asset group and concluded that the asset group was impaired. The Company used a multi-period excess earnings approach to estimate the fair value of the long-lived asset group for purposes of testing the asset group for impairment. This method estimates fair value based on the expected future excess earnings stream attributable to the asset group. This method requires the use of several key assumptions, including revenue projections that consider historical and estimated future results, general economic and market conditions, as well as the impact of planned business and operational strategies. A discount rate of 15.0% was applied to the estimated future excess earnings and cash flows in order to estimate the fair value of the asset group as of the measurement date. The Company has determined that the lowest level of the inputs that are significant to the fair value measurement are unobservable inputs that fall within Level 3 of the fair value hierarchy. In accordance with ASC 360, the Company allocated the resulting impairment to the specific long-lived assets within the asset group on a pro rata basis, except that the loss allocated to an individual long-lived asset of the group did not reduce

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document the carrying amount of that asset below its estimated fair value. As a result, the Company recognized a total noncash impairment charge of $252,382 in the first quarter, primarily allocated to definite-lived intangible assets, which is presented as “Impairment of long-lived assets” on the accompanying consolidated statements of operations. In January 2021, the Company’s Board of Directors committed to a plan to sell its manufacturing operations located in Red Oak, Texas. As a result of this decision and the resulting classification of this disposal group as held for sale, the Company fully impaired the remaining customer relationship intangible asset within the Aerospace Structures segment and recognized a noncash impairment charge of $6,696, which has been included in the impairment on the assets held for sale as disclosed in Note 3 and is presented within “Loss on sale of assets and businesses” on the accompanying consolidated statement of operations. See below for the Company's accounting policy regarding fair value measurements and the definition of fair value levels.

Revenue Recognition and Contract Balances The Company adopted ASC 606 on April 1, 2018. The Company's revenue is principally from contracts with customers to provide design, development, manufacturing, and support services associated with specific customer programs. The Company regularly enters into long-term master supply agreements that establish general terms and conditions and may define specific program requirements. Many agreements include clauses that provide sole supplier status to the Company for the duration of the program’s life. Purchase orders (or authorizations to proceed) are issued pursuant to the master supply agreements. Additionally, a majority of the Company’s agreements with customers include options for future purchases. Such options primarily reduce the administrative effort of issuing subsequent purchase orders and do not represent material rights granted to customers. The Company generally enters into agreements directly with its customers and is the principal in all current contracts. The identification of a contract with a customer for purposes of accounting and financial reporting requires an evaluation of the terms and conditions of agreements to determine whether presently enforceable rights and obligations exist. Management considers a number of factors when making this evaluation that include, but are not limited to, the nature and substance of the business exchange, the specific contractual terms and conditions, the promised products and services, the termination provisions in the contract, as well as the nature and execution of the customer’s ordering process and how the Company is authorized to perform work. Generally, presently enforceable rights and obligations are not created until a purchase order is issued by a customer for a specified number of units of product or services. Therefore, the issuance of a purchase order is generally the point at which a contract is identified for accounting and financial reporting purposes. Management identifies the promises to the customer. Promises are generally explicitly stated in each contract, but management also evaluates whether any promises are implied based on the terms of the agreement, past business practice, or other facts and circumstances. Each promise is evaluated to determine if it is a performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service. The Company considers a number of factors when determining whether a promise is a distinct performance obligation, including whether the customer can benefit from the good or service on its own or together with other resources that are readily available to the customer, whether the Company provides a significant service of integrating goods or services to deliver a combined output to the customer, or whether the goods or services are highly interdependent. The Company’s performance obligations consist of a wide range of engineering design services and manufactured components, as well as spare parts and repairs for OEMs. The transaction price for a contract reflects the consideration the Company expects to receive for fully satisfying the performance obligations in the contract. Typically, the transaction price consists solely of fixed consideration but may include variable consideration for contractual provisions such as unpriced contract modifications, cost-sharing provisions, and other receipts or payments to customers. The Company identifies and estimates variable consideration, typically at the most likely amount the Company expects to receive from its customers. Variable consideration is only included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized for the contract will not occur, or when the uncertainty associated with the variable consideration is resolved. The Company's contracts with customers generally require payment under normal commercial terms after delivery with payment typically required within 30 to 120 days of delivery. However, a subset of the Company’s current contracts includes significant financing components because the timing of the transfer of the underlying products and services under contract are at the customers’ discretion. For these contracts, the Company adjusts the transaction price to reflect the effects of the time value of money. The Company generally is not subject to collecting sales tax and has made an accounting policy election to exclude from the transaction price any sales and other similar taxes collected from customers. As a result, any such collections are accounted for on a net basis. The total transaction price is allocated to each of the identified performance obligations using the relative stand-alone selling price. The objective of the allocation is to reflect the consideration that the Company expects to receive in exchange for the products or services associated with each performance obligation. Stand-alone selling price is the price at which the Company would sell a promised good or service separately to a customer. Stand-alone selling prices are established at contract inception, and subsequent changes in transaction price are allocated on the same basis as at contract inception. When stand-alone selling prices for the Company’s products and services are not observable, the Company uses either the “Expected Cost Plus a Margin” or "Adjusted Market Assessment" approaches to estimate stand-alone selling price. Expected costs are typically derived from the available periodic forecast information.

With control transferring over time, revenue is recognized based on the extent of progress toward completion of the performance obligation. The Company generally uses the cost-to-cost input method of progress for its contracts because it best depicts the transfer of control to the customer that occurs as work progresses. Under the cost-to-cost method, the extent of progress toward completion is measured based on the proportion of costs incurred to date to the total estimated costs at completion of the performance obligation. The Company reviews its cost estimates on contracts on a periodic basis, or when circumstances change and warrant a modification to a previous estimate. Cost estimates are largely based on negotiated or estimated purchase contract terms, historical performance trends and other economic projections. Significant factors that influence these estimates include inflationary trends, technical and schedule risk, internal and subcontractor performance trends, business volume assumptions, asset utilization, and anticipated labor agreements. Revenue and cost estimates are regularly monitored and revised based on changes in circumstances. Impacts from changes in estimates of net sales and cost of sales are recognized on a cumulative catch-up basis, which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a performance obligation’s percentage of completion. Forward loss reserves for anticipated losses on long-term contracts are recorded in full when such losses become evident, to the extent required and are included in contract liabilities on the accompanying consolidated balance sheets. The Company believes that the accounting estimates and assumptions made by management are appropriate given the increased uncertainties surrounding the severity and duration of the impacts of the COVID-19 pandemic, however actual results could differ materially from those estimates. For the fiscal year ended March 31, 2021, cumulative catch-up adjustments resulting from changes in contract values and estimated costs that arose during the fiscal year increased revenue and decreased operating loss, net loss, and loss per share by approximately $4,796, $12,332, $12,332, and $0.23, respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2021, included gross favorable adjustments of approximately $55,180 and gross unfavorable adjustments of approximately $42,848. For the fiscal year ended March 31, 2020, cumulative catch-up adjustments resulting from changes in estimates increased net sales, operating loss, net loss and loss per share by approximately $12,011, ($22,844), ($22,844), and ($0.45), respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2020, included gross favorable adjustments of approximately $43,405 and gross unfavorable adjustments of approximately $66,249. For the fiscal year ended March 31, 2019, cumulative catch-up adjustments resulting from changes in estimates decreased operating loss, net loss and decreased loss per share by approximately ($68,694), ($68,694), and ($1.38), respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2019, included gross favorable adjustments of approximately $46,074 and gross unfavorable adjustments of approximately $114,768. These cumulative catch-up adjustments do not include a noncash charge the Company recorded as a result of the adoption of ASU 2017-07 of $87,241 due to a change in estimate from a change in accounting principles, which is presented on the accompanying consolidated statements of operations within cost of sales. Revenues for performance obligations that are not recognized over time are recognized at the point in time when control transfers to the customer. For performance obligations that are satisfied at a point in time, the Company evaluates the point in time when the customer can direct the use of and obtain the benefits from the products and services. Generally, the shipping terms determine the point in time when control transfers to customers. Shipping and handling activities are not considered performance obligations and related costs are included in cost of sales as incurred. Differences in the timing of revenue recognition and contractual billing and payment terms result in the recognition contract assets and liabilities. Refer to Note 4 for further discussion. In connection with several of prior acquisitions, the Company assumed existing long-term contracts. Based on review of these contracts at the acquisition date, the Company concluded that the terms of certain contracts were either more or less favorable than could be realized in market transactions as of the date of the acquisition. As a result, the Company recognized acquired contract liabilities, net of acquired contract assets as of the acquisition date of each respective acquisition, based on the present value of the difference between the contractual cash flows of the executory contracts and the estimated cash flows had the contracts been executed at the acquisition date. The liabilities principally relate to long- term contracts that were initially executed several years prior to the respective acquisition. The Company measured these net liabilities in the year they were acquired under the measurement provisions of ASC 820, Fair Value Measurement, which is based on the price to transfer the obligation to a market participant at the measurement date, assuming that the net liabilities will remain outstanding in the marketplace. The portion of the Company's revenue resulting from transactions other than contracts with customers pertains to the amortization of these acquired contract liabilities as the related

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document contractual performance obligations are satisfied. Adjustments to these liabilities due to significant changes in the total estimated costs of the contract are accounted for in a manner consistent with other loss contract reserves, with such adjustments recognized in cost of sales. The balance of the liability as of March 31, 2021, is $43,888 and, based on the expected delivery schedule of the underlying contracts, the Company estimates annual amortization of the liability as follows: 2022 — $22,897; 2023 — $3,347; 2024 — $2,501; 2025 — $2,564; 2026 — $1,282; thereafter $11,296.

Leases The Company leases office space, manufacturing facilities, land, vehicles, and equipment. The Company determines if an agreement is or contains a lease at the lease inception date and recognizes right-of-use assets (“ROU”) and lease liabilities at the lease commencement date. A ROU asset and corresponding lease liability are not recorded for leases with an initial term of 12 months or less (“short-term leases”). ROU assets represent the Company's right to use an underlying asset during the lease term, and lease liabilities represent the Company's obligation to make lease payments arising from the lease. The determination of the length of lease terms is affected by options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. The existence of significant economic incentive is the primary consideration when assessing whether the Company is reasonably certain of exercising an option in a lease. Both finance and operating lease ROU assets and liabilities are recognized at commencement date and measured as the present value of lease payments to be made over the lease term. As the interest rate implicit in the lease is not readily available for most of the Company's leases, the Company uses its estimated incremental borrowing rate in determining the present value of lease payments. The estimated incremental borrowing rate is derived from information available at the lease commencement date. The lease ROU asset recognized at commencement is adjusted for any lease payments related to initial direct costs, prepayments, and lease incentives. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, lease expense comprises the amortization of the ROU assets recognized on a straight-line basis generally over the shorter of the lease term or the estimated useful life of the underlying asset and interest on the lease liability. Variable lease payments not dependent on a rate or index are recognized when the event, activity, or circumstance in the lease agreement upon which those payments are contingent is probable of occurring and are presented in the same line of the consolidated balance sheet as the rent expense arising from fixed payments. The Company has lease agreements with lease and non-lease components. Non-lease components are combined with the related lease components and accounted for as lease components for all classes of underlying assets.

Retirement Benefits Defined benefit pension plans are recognized in the consolidated financial statements on an actuarial basis. A significant element in determining the Company's pension income (expense) is the expected long-term rate of return on plan assets. This expected return is an assumption as to the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the projected pension benefit obligation. The Company applies this assumed long- term rate of return to a calculated value of plan assets, which recognizes changes in the fair value of plan assets in a systematic manner over five years. This produces the expected return on plan assets that is included in pension income (expense). The difference between this expected return and the actual return on plan assets is deferred. The net deferral of past asset gains (losses) affects the calculated value of plan assets and, ultimately, future pension income (expense). The Company periodically experiences events or makes changes to its benefit plans that result in curtailment or special charges. Curtailments are recognized when events occur that significantly reduce the expected years of future service of present employees or eliminates the benefits for a significant number of employees for some or all of their future service. Curtailment losses are recognized when it is probable the curtailment will occur and the effects are reasonably estimable. Curtailment gains are recognized when the related employees are terminated or a plan amendment is adopted, whichever is applicable. From time to time, the Company may enter into transactions that relieve it of primary responsibility for all or more than a minor portion of certain of its pension benefit obligations. When these transactions are effected through an irrevocable action that relieves the Company of primary responsibility for its pension or other postretirement benefit obligations and eliminates significant risks related to the obligation and the related assets used to effect the transaction, they are considered settlements, as defined by ASC 715, Compensation – Retirement Benefits. When a transaction meets the definition of a settlement, at the time of settlement the Company recognizes as a gain or loss the pro rata amount of the net gain or loss in accumulated other comprehensive income based on the proportion of the projected benefit obligation settled to the total projected benefit obligation.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document As required under ASC 715, the Company remeasures plan assets and obligations during an interim period whenever a significant event occurs that results in a material change in the net periodic pension cost. The determination of significance is based on judgment and consideration of events and circumstances impacting the pension costs. At March 31 of each year, the Company determines the fair value of its pension plan assets as well as the discount rate to be used to calculate the present value of plan liabilities. The discount rate is an estimate of the interest rate at which the pension benefits could be effectively settled. In estimating the discount rate, the Company looks to rates of return on high- quality, fixed-income investments currently available and expected to be available during the period to maturity of the pension benefits. The Company uses a portfolio of fixed-income securities, which receive at least the second-highest rating given by a recognized ratings agency.

Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. When determining fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and also considers assumptions that market participants would use when pricing an asset or liability. The fair value hierarchy has three levels of inputs that may be used to measure fair value: Level 1—Unadjusted quoted prices in active markets for identical assets or liabilities; Level 2—Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability; and Level 3—Unobservable inputs for the asset or liability. The Company has applied fair value measurements when measuring the impairment of assets held for sale (see Note 3), when measuring long-lived asset impairment in the current period (see above within the disclosure of the Company’s goodwill and intangible asset accounting policies), and to its pension and postretirement plan assets (see Note 15).

Income Taxes The Company accounts for income taxes using the asset and liability method. The asset and liability method requires recognition of deferred tax assets and liabilities for expected future tax consequences of temporary differences that currently exist between tax bases and financial reporting bases of the Company's assets and liabilities. A valuation allowance is provided on deferred taxes if it is determined that it is more likely than not that the asset will not be realized. Management judgment is required to determine the amount of benefit to be recognized in relation to an uncertain tax position. The Company uses a two-step process to evaluate tax positions. The first step requires an entity to determine whether it is more likely than not (greater than 50% chance) that the tax position will be sustained. The second step requires an entity to recognize in the financial statements the benefit of a tax position that meets the more-likely-than-not recognition criterion. The amounts ultimately paid upon resolution of issues raised by taxing authorities may differ materially from the amounts accrued and may materially impact the financial statements of the Company in future periods. The Company recognizes penalties and interest accrued related to income tax liabilities in the provision for income taxes on its consolidated statements of operations.

Supplemental Cash Flow Information For the fiscal year ended March 31, 2021, the Company paid $2,297 for income taxes, net of income tax refunds received. For the fiscal year ended March 31, 2020, the Company paid $4,005 for income taxes, net of income tax refunds received. For the fiscal year ended March 31, 2019, the Company received $4,701 as income tax refunds, net of tax paid.

3. DIVESTED OPERATIONS AND ASSETS HELD FOR SALE Assets Held for Sale In May 2020, the Company’s Board of Directors committed to a plan to sell its composites manufacturing operations located in Milledgeville, Georgia and Rayong, Thailand. In August 2020, the Company entered into a definitive agreement with the buyer of the composites manufacturing operations in Georgia and Thailand. In February 2021, the Company entered into a definitive agreement to sell its manufacturing operations in Red Oak, Texas, to the same buyer of the Milledgeville and Rayong composites manufacturing operations. These transactions closed in May 2021. In the year ended March 31, 2021, the Company adjusted the carrying amount of its assets held for sale to its estimated fair value less cost to sell and recognized a loss $102,493 due to decreases in actual and expected performance of certain widebody programs within the disposal group that affected this estimate. The impairment is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. To measure the amount of the impairment, the Company compared the carrying value of the assets and liabilities of the disposal group with their estimated fair value less cost to sell as of the balance sheet date. The estimate of fair value is categorized as Level 2 within the fair value hierarchy. The key assumptions used in the estimate of fair value is the negotiated sales price of the assets and the assumption of the disposal group’s liabilities. As of March 31, 2021, the operating results of these related operations are included within the Aerospace

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Structures reportable segment, and the related assets and liabilities are classified as held for sale on the accompanying consolidating balance sheets.

Fiscal 2021 Divestitures In August 2020, the Company completed the transfer of the assets and certain liabilities associated with its Gulfstream G650 wing supply chain activities for cash proceeds net of transaction costs of approximately $51,000. This transaction also resulted in the derecognition of approximately $18,157 in accrued warranties related to these activities. The Company recognized a loss of approximately $819, which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. The operating results associated with the G650 wing supply chain activities were included within Aerospace Structures through the date of transfer.

Fiscal 2020 Divestitures In December 2019, the Company completed the sale of its manufacturing operations at its Nashville, Tennessee, facility for cash proceeds net of transaction costs of approximately $58,000, including approximately $7,000 allocated as a premium paid by the buyer in exchange for a specified performance guarantee. The Company recognized a loss of approximately $64,000, which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. The operating results of the Nashville manufacturing operations were included in Aerospace Structures through the date of divestiture. Additionally, as part of the transaction, the Company agreed to transfer to the buyer, within 120 days from the date of closing, certain defined benefit pension assets and obligations of approximately $55,000 associated with the Nashville manufacturing operations. In accordance with applicable defined benefit pension plan accounting guidance, the transfer was treated as a settlement for purposes of the Company’s consolidated financial statements and resulted in accelerated recognition of previously unrecognized actuarial losses. The Company completed the transfer of the defined benefit pension assets and obligations in March 2020 and recognized a one-time settlement loss of approximately $28,000. In September 2019, the Company completed the assignment of its E-2 Jets contract with Embraer for the manufacture of structural components for their program to AeroSpace Technologies of Korea Inc. ("ASTK"). As part of this transaction, the Company transferred certain assets and liabilities to ASTK and recognized a gain of approximately $10,000, which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. The assets and liabilities transferred were included within Aerospace Structures through the date of divestiture.

Fiscal 2019 Divestitures In March 2019, the Company sold all of the shares of Triumph Structures – Kansas City, Inc.; Triumph Structures – Wichita, Inc.; Triumph Gear Systems – Toronto; ULC; and Triumph Northwest (The Triumph Group Operations, Inc.) (together, "Machining"). Total cash proceeds net of transaction costs for the sale of Machining was approximately $43,000. A portion of the proceeds associated with the sale of Machining included consideration in the form of a note receivable of $10,000. Upon closing, the Company recognized a loss of approximately $116,000. An additional loss of approximately $3,000 was recognized during fiscal 2020, as a result of working capital adjustments and additional transaction costs and is presented within loss on sale of assets and businesses on the accompanying consolidated statements of operations. In March 2019, the Company sold all of the shares of (i) Triumph Fabrications - San Diego, Inc. and Triumph Fabrications - Ft. Worth, Inc. (together, "Fabrications"), and (ii) Triumph Aviation Services - NAAS Division, Inc. ("NAAS"). Total cash proceeds net of transaction costs for the sales of Fabrications and NAAS were approximately $133,000 and $18,000, respectively. As a result of the sales of Fabrications, the Company recognized a gain of approximately $54,000. The sale of NAAS resulted in an immaterial gain. In February 2019, the Company transitioned responsibility for the Global 7500 wing program manufacturing operations of Aerospace Structures to Bombardier at which point Bombardier assumed the program’s assets and obligations. As a result of this transfer, the Company recognized a loss of approximately $169,000. The Company continued to provide transition services related to infrastructure support through December 2020, as well as a lease of the building in Red Oak, Texas, dedicated to the manufacturer of the Global 7500 wing to Bombardier. In July and August 2018, respectively, the Company sold all of the shares of Triumph Structures - East Texas, Inc. as well as all of the shares of Triumph Structures - Los Angeles, Inc., and Triumph Processing, Inc. for combined cash proceeds net of transactions costs of approximately $43,000 and a note receivable of $7,000. The note receivable was collected in October 2018. As a result of these sales, the Company recognized losses of approximately $17,000, which are presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 4. REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS Disaggregation of Revenue The Company disaggregates revenue based on the method of measuring satisfaction of the performance obligation either over time or at a point in time. Additionally, the Company disaggregates revenue based upon the end market where products and

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Triumph Group, Inc. Notes to Consolidated Financial Statements (Dollars in thousands, except per share data) services are transferred to the customer. The Company’s principal operating segments and related revenue are discussed in Note 21, Segments. The following table shows disaggregated net sales satisfied overtime and at a point in time (excluding intercompany sales) for the years ended March 31, 2021 and 2020:

Year Ended March 31, 2021 2020 Systems & Support Satisfied over time $ 464,874 $ 578,117 Satisfied at a point in time 576,886 738,158 Revenue from contracts with customers 1,041,760 1,316,275 Amortization of acquired contract liabilities 15,062 34,486 Total revenue 1,056,822 1,350,761

The following table shows disaggregated net sales by end market (excluding intercompany sales) for the years ended March 31, 2021 and 2020:

Year Ended March 31, 2021 2020 Systems & Support Commercial aerospace $ 396,841 $ 737,885 Military 552,323 436,166 Business jets 36,701 61,338 Regional 24,862 43,761 Non-aviation 31,033 37,125 Revenue from contracts with customers 1,041,760 1,316,275 Amortization of acquired contract liabilities 15,062 34,486 Total revenue $ 1,056,822 $ 1,350,761

Aerospace Structures Commercial aerospace $ 481,845 $ 879,690 Military 137,466 116,846 Business jets 158,156 422,681 Regional 11,558 89,318 Non-aviation 370 21 Revenue from contracts with customers 789,395 1,508,556 Amortization of acquired contract liabilities 23,502 40,800 Total revenue 812,897 1,549,356 $ 1,869,719 $ 2,900,117

Contract Assets and Liabilities Contract assets primarily represent revenues recognized for performance obligations that have been satisfied or partially satisfied but for which amounts have not been billed. This typically occurs when revenue is recognized over time but the Company's contractual right to bill the customer and receive payment is conditional upon the satisfaction of additional performance obligations in the contract, such as final delivery of the product. Contract assets are recognized when the revenue associated with the contract is recognized prior to billing and derecognized when billed in accordance with the terms of the contract. The Company pools contract assets that share underlying risk characteristics and records an allowance for expected credit losses based on a combination of prior experience, current economic conditions and management’s expectations of future economic conditions, and specific collectibility matters when they arise. Contract assets are presented net of this reserve on the accompanying consolidated balance sheets. For the years ended March 31, 2021 and 2020, credit loss expense and write-offs related to contract assets were immaterial. Contract liabilities are recorded when customers remit contractual cash payments in advance of the Company satisfying performance obligations under contractual arrangements, including those with performance obligations to be satisfied over a period of time. Contract liabilities other than those pertaining to forward loss reserves are derecognized when or as revenue is recognized. Contract modifications can also impact contract asset and liability balances. When contracts are modified to account for changes in contract specifications and requirements, the Company considers whether the modification either creates new or changes the existing enforceable rights and obligations. Contract modifications that are for goods or services that are not distinct from the existing contract, due to the significant integration with the original good or service provided, are accounted for as if they were part of that existing contract. The effect of a contract modification to an existing contract on the transaction price and the Company’s measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue (either as an increase in or a reduction of revenue) on a cumulative catch-up basis. When the modifications include additional performance obligations that are distinct and at relative stand-alone selling price, they are accounted for as a new contract and performance obligation, which are recognized prospectively. Contract balances are classified as assets or liabilities on a contract-by-contract basis at the end of each reporting period. The following table summarizes the Company’s contract assets and liabilities balances:

March 31, 2021 March 31, 2020 Change Contract assets $ 139,937 $ 267,079 $ (127,142) Contract liabilities (305,116) (386,585) 81,469 Net contract liability $ (165,179) $ (119,506) $ (45,673)

The Company recognized revenue due to changes in estimates associated with performance obligations satisfied or partially satisfied in previous periods of $4,796. The change in contract assets is the result of the settlement of approximately $60,802 of contract assets associated with the Gulfstream G650 wing supply chain transfer as well as the reclassification of approximately $76,821 of contract assets as held for sale on the accompanying consolidated balance sheet as of March 31, 2021. These decreases were partially offset by revenue recognized in excess of amounts billed during the year ended March 31, 2021. The change in contract liabilities is the result of revenue recognized in excess of the receipt of additional customer advances during the period as well as the reclassification of approximately $7,562 of contract liabilities as held for sale on the accompanying consolidated balance sheet as of March 31, 2021. For the period ended March 31, 2021, the Company recognized $78,725 of revenue that was included in the contract liability balance at the beginning of the period. Noncurrent contract assets presented in other, net on the accompanying consolidated balance sheets as of March 31, 2021 and 2020, were $5,299 and $22,662, respectively. Noncurrent contract liabilities presented in other noncurrent liabilities on the accompanying consolidated balance sheets as of March 31, 2021 and 2020, were $100,737 and $91,265, respectively.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document as well as spare parts and repairs for OEMs. A single contract may contain multiple performance obligations consisting of both recurring and nonrecurring elements. As of March 31, 2021, the Company has the following unsatisfied, or partially unsatisfied, performance obligations that are expected to be recognized in the future as noted in the table below. The Company expects options to be exercised in addition to the amounts presented below.

Less than More than 5 Total 1 year 1-3 years 4-5 years years Unsatisfied performance obligations $2,273,527 $1,251,209 $ 961,332 $ 60,889 $ 97

Of the total unsatisfied performance obligations included in the table above as of March 31, 2021, approximately $433,262 related to divestitures occurring subsequent to March 31, 2021, as disclosed in Note 22.

5. INVENTORIES The Company records inventories at the lower of cost (average-cost or specific-identification methods) or market. The Company expenses general and administrative costs related to products and services provided essentially under commercial terms and conditions as incurred. The Company determines the costs of inventories sold by the first-in, first-out or average cost methods. The components of inventories are as follows:

March 31, 2021 2020 Raw materials $ 45,211 $ 32,552 Work-in-process, including manufactured and purchased components 277,729 312,953 Finished goods 51,221 50,011 Rotable assets 26,205 57,460 Total inventories $ 400,366 $ 452,976

The Company recognized an impairment loss of approximately $23,689 on certain rotable inventory that primarily arose as a result of customer fleet retirement announcements resulting from the COVID-19 pandemic. The impairment loss is included in cost of sales on the accompanying consolidated statements of operations for the year ended March 31, 2021. 6. PROPERTY AND EQUIPMENT Property and equipment, which include equipment under finance lease and leasehold improvements, are recorded at cost and depreciated over the estimated useful lives of the related assets, or the lease term if shorter in the case of leasehold improvements, using the straight-line method. Buildings and improvements are depreciated over a period of 15 to 39.5 years, and machinery and equipment are depreciated over a period of 7 to 15 years (except for furniture, fixtures and computer equipment, which are depreciated over a period of 3 to 10 years). Net property and equipment is:

March 31, 2021 2020 Land $ 17,814 $ 42,438 Construction-in-process 11,368 19,231 Buildings and improvements 144,756 285,407 Machinery and equipment 594,542 701,018 768,480 1,048,094 Less: accumulated depreciation 557,111 629,953 $ 211,369 $ 418,141

Depreciation expense for the fiscal years ended March 31, 2021, 2020, and 2019, was $71,651, $89,857 and $97,323, respectively, which includes depreciation of assets under finance lease.

7. GOODWILL AND OTHER INTANGIBLE ASSETS The following is a summary of the changes in the carrying value of goodwill by reportable segment, for the fiscal years ended March 31, 2021 and 2020:

Systems & Support March 31, 2020 $ 513,527 Effect of exchange rate changes 8,111 March 31, 2021 $ 521,638

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Systems & Support March 31, 2019 $ 583,225 Effect of exchange rate changes (3,577) Impairment of goodwill (66,121) March 31, 2020 $ 513,527

As of March 31, 2021 and 2020, Aerospace Structures had gross goodwill of $871,387 and $1,166,773, respectively, which was fully impaired. As of March 31, 2021 and 2020, Systems & Support had gross goodwill of $587,759 and $579,649, respectively, and accumulated goodwill impairment of $66,121 and $66,121, respectively.

Intangible Assets The components of intangible assets, net are as follows:

March 31, 2021 Weighted- Average Life Gross Carrying Accumulated (in Years) Amount Amortization Net Customer relationships 17.9 $ 170,198 $ (74,253) $ 95,945 Product rights, technology and licenses 11.4 55,050 (48,645) 6,405 Other 30.0 300 (197) 103 Total intangibles, net $ 225,548 $ (123,095) $ 102,453

March 31, 2020 Weighted- Average Life Gross Carrying Accumulated (in Years) Amount Amortization Net Customer relationships 17.7 $ 550,131 $ (276,980) $ 273,151 Product rights, technology and licenses 11.4 54,676 (46,180) 8,496 Noncompete agreements and other 16.7 2,656 (1,208) 1,448 Tradenames 10.0 150,000 (51,127) 98,873 Total intangibles, net $ 757,463 $ (375,495) $ 381,968

Amortization expense for the fiscal years ended March 31, 2021, 2020, and 2019, was $22,551, $48,311, and $52,581, respectively. Amortization expense for the five fiscal years succeeding March 31, 2021, by year is expected to be as follows: 2022: $11,846; 2023: $11,846; 2024: $11,846; 2025: $11,846; 2026: $11,432, and thereafter: $43,639.

8. ACCRUED EXPENSES Accrued expenses consist of the following items:

March 31, 2021 2020 Accrued pension $ 1,097 $ 753 Accrued other postretirement benefits 3,371 4,775 Accrued compensation and benefits 97,021 84,404 Accrued interest 31,036 13,252 Accrued warranties 24,492 30,079 Accrued workers' compensation 15,601 16,583 Accrued income tax 5,084 3,796 Operating lease liabilities 11,605 13,139 All other 81,853 60,622 Total accrued expenses $ 271,160 $ 227,403

9. LEASES The components of lease expense for the year ended March 31, 2021, are disclosed in the table below.

Year Ended March 31, Lease Cost Financial Statement Classification 2021 2020 Operating lease cost Cost of sales or Selling, general and administrative expense $ 22,976 $ 24,539 Variable lease cost Cost of sales or Selling, general and administrative expense 9,344 8,382 Financing Lease Cost: Amortization of right-of-use assets Depreciation and amortization 4,673 5,317 Interest on lease liability Interest expense and other 1,580 2,307 Total lease cost (1) $ 38,573 $ 40,545

(1) Total lease cost does not include short-term leases or sublease income, both of which are immaterial. Supplemental cash flow information for the years ended March 31, 2021 and 2020, is disclosed in the table below.

Supplemental balance sheet information related to leases as of March 31, 2021 and 2020, is disclosed in the table below.

March 31, Leases Classification 2021 2020 Assets Operating lease ROU assets Other, net Assets held for sale $ 46,643 $ 61,461

Finance lease ROU assets, cost Property and equipment, net Assets held for sale 44,128 39,461 Accumulated amortization Property and equipment, net Assets held for sale (23,344) (18,650) Finance lease ROU assets, net 20,784 20,811 Total lease assets $ 67,427 $ 82,272

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Noncurrent Operating Other noncurrent liabilities Liabilities related to assets held for sale 42,385 54,687 Finance Long-term debt, less current portion Liabilities related to assets held for sale 14,878 16,597 Total lease liabilities $ 76,120 $ 91,759

Information related to lease terms and discount rates as of March 31, 2021 and 2020, is disclosed in the table below.

2021 2020 Weighted average remaining lease term (years) Operating leases 7.3 7.2 Finance leases 6.9 6.9

Weighted average discount rate Operating leases 6.3% 6.2% Finance leases 6.8% 5.9%

The maturity of the Company's lease liabilities as of March 31, 2021, is disclosed in the table below.

Operating Finance leases leases Total FY2022 $ 15,752 $ 7,436 $ 23,188 FY2023 10,561 4,322 14,883 FY2024 7,057 3,520 10,577 FY2025 6,339 1,961 8,300 FY2026 5,880 1,305 7,185 Thereafter 23,912 8,656 32,568 Total lease payments 69,501 27,200 96,701 Less: Imputed interest (14,231) (6,350) (20,581) Total lease liabilities $ 55,270 $ 20,850 $ 76,120

10. LONG-TERM DEBT Long-term debt consists of the following:

March 31, 2021 2020 Revolving credit facility $ — $ 400,000 Receivable securitization facility — 75,000 Finance leases 20,125 23,933 Senior secured first lien notes due 2024 700,000 — Senior secured notes due 2024 525,000 525,000 Senior notes due 2022 236,471 300,000 Senior notes due 2025 500,000 500,000 Less: debt issuance costs (24,053) (16,426) 1,957,543 1,807,507 Less: current portion 5,247 7,336 $ 1,952,296 $ 1,800,171

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Receivables Securitization Program On August 17, 2020, the Company entered into amendments to its Securitization Facility. The August amendments removed the covenants that required the Company to maintain certain financial ratios. As of March 31, 2021, the maximum amount available under the Securitization Facility was $75,000, and the Company has the ability to reduce the facility amount to not less than $50,000. The actual amount available under the Securitization Facility at any point in time is dependent upon the balance of eligible accounts receivables as well as the amount of letters of credit outstanding.

On September 29, 2020, the Company entered into additional amendments to the Securitization Facility. The September amendments provide the Company with enhanced liquidity options by establishing a letter of credit facility under the Securitization Facility which effectively replaces a similar limited letter of credit facility under the Revolving Credit Facility Amendment. Pursuant to the letter of credit facility, the Company may request the Securitization Facility’s administrator to issue one or more letters of credit that will expire no later than 12 months after the date of issuance, extension or renewal, as applicable. In connection with the Securitization Facility, the Company sells on a revolving basis certain eligible accounts receivable to Triumph Receivables, LLC, a wholly-owned special-purpose entity, which in turn sells a percentage ownership interest in the receivables to commercial paper conduits sponsored by financial institutions. The Company is the servicer of the trade accounts receivable under the Securitization Facility. Interest rates are based on the lesser of 0.75% or the London Interbank Offered Rate (“LIBOR”), plus a 2.50% fee on the drawn portion and 0.60% fee on the undrawn portion of the Securitization Facility. The Company secures its trade accounts receivable, which are generally non-interest-bearing, in transactions that are accounted for as borrowings pursuant to ASC 860, Transfers and Servicing. At March 31, 2021, there were $0 in borrowings and $27,763 in letters of credit outstanding under the Securitization Facility, primarily to support insurance policies. The Securitization Facility expires in December 2022. The agreements governing the Securitization Facility contain restrictions and covenants, including limitations on the making of certain restricted payments; creation of certain liens; and certain corporate acts such as mergers, consolidations and the sale of all or substantially all the Company's assets.

Senior Secured First Lien Notes due 2024 On August 17, 2020, the Company issued $700,000 principal amount of 8.875% Senior Secured First Lien Notes due June 1, 2024 (the “First Lien Notes”) pursuant to an indenture among the Company, the Guarantor Subsidiaries (as defined below) and U.S. Bank National Association, as trustee (the “First Lien Notes Indenture”). The First Lien Notes were sold at 100% of the principal amount and have an effective interest yield of 8.875%. Interest is payable semi-annually in cash in arrears on June 1 and December 1 of each year, commencing on December 1, 2020. In connection with the issuance of the First Lien Notes, the Company incurred approximately $13,000 of costs, which were deferred and are being amortized over the term of the First Lien Notes. The First Lien Notes and the guarantees are first lien secured obligations of the Company and the Guarantor Subsidiaries. The First Lien Notes: • rank equally in right of payment to any existing and future senior indebtedness of the Company and Guarantor Subsidiaries, including the 2022 Notes, the 2024 Notes, and the 2025 Notes, (each as defined below and collectively, the “Existing Notes”); • are effectively senior to all existing and future second lien obligations (including the 2024 Notes) and all existing and future unsecured indebtedness of the Company and the Guarantor Subsidiaries, but only to the extent of the value of the Collateral (as defined below), and after giving effect to any permitted additional first lien secured obligations and other permitted liens of senior or equal priority); • are senior in right of payment to all future subordinated indebtedness of the Company and the Guarantor Subsidiaries; • are secured by the Collateral on a pari passu basis with any future permitted additional first lien secured obligations, subject to the Collateral Trust Agreement (as defined below); • are effectively subordinated to any existing and future obligations of the Company and the Guarantor Subsidiaries that are secured by assets that do not constitute the Collateral, in each case, to the extent of the value of the assets securing such obligations; and • are structurally subordinated to all existing and future indebtedness and other liabilities of the Company’s existing and future subsidiaries that do not guarantee the First Lien Notes, including the Receivables Securitization Facility. The First Lien Notes are guaranteed on a full, senior secured, joint and several basis by each of the Company’s domestic restricted subsidiaries (the “Guarantor Subsidiaries”) that guarantees any of the Company’s Existing Notes. In the future, each of the Company’s domestic restricted subsidiaries (other than any domestic restricted subsidiary that is a receivable subsidiary) that (1) is not an immaterial subsidiary, (2) becomes a borrower under any of its material debt facilities or (3) guarantees (a) any of the Company’s indebtedness or (b) any indebtedness of the Company’s domestic restricted subsidiaries, in the case of either (a) or (b), incurred under any of the Company’s material debt facilities, will guarantee the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document First Lien Notes. Under certain circumstances, the guarantees may be released without action by, or consent of, the holder of the First Lien Notes.

The First Lien Notes and the guarantees will be secured, subject to permitted liens, by first-priority liens on substantially all of the Company’s and the Guarantor Subsidiaries’ assets (including certain of the Company’s real estate assets), whether now owned or hereafter acquired, other than certain excluded property, which liens will secure permitted additional first lien obligations on a pari passu basis, subject to the Collateral Trust Agreement and will rank senior to those that secure the 2024 Notes (the “Collateral”). Under certain circumstances, the Collateral may be released without action by, or the consent of, the holders of the First Lien Notes. The First Lien Notes and the guarantees will not be secured by the assets of Non-Guarantor Subsidiaries (as defined below), which include the unrestricted subsidiaries to whom certain of the Company’s accounts receivables are and may in the future be sold to support borrowing under the Receivables Securitization Facility. Pursuant to an intercreditor agreement (the “Intercreditor Agreement”) between Wilmington Trust, National Association, in its capacity as the collateral trustee (the “Collateral Trustee”) and U.S. Bank National Association, in its capacity as second lien collateral agent for the 2024 Notes, the liens on the Collateral securing the First Lien Notes and all future first lien obligations will be made expressly senior to the liens securing the 2024 Notes. A collateral trust agreement (the “Collateral Trust Agreement”) among the Company, the Guarantor Subsidiaries, the Collateral Trustee and U.S. Bank National Association, in its capacity as the trustee for the First Lien Notes, will set forth therein the relative rights with respect to the Collateral as among the trustee for the First Lien Notes and certain subsequent holders of first lien obligations and covering certain other matters relating to the administration of security interests. The Collateral Trust Agreement will generally control substantially all matters related to the Collateral, including with respect to decisions, distribution of proceeds or enforcement. Pursuant to the Collateral Trust Agreement, on the issue date of the First Lien Notes the Collateral Trustee will control certain matters related to the Collateral that the Collateral Trust Agreement specifies are in its discretion. If the Company incurs certain types of additional first lien obligations, the Controlling First Lien Holders (as defined in the Collateral Trust Agreement) will have the right to control decisions relating to the Collateral that are outside the Collateral Trustee’s discretion under the Collateral Trust Agreement and the First Lien Note holders may no longer be in control of such decisions. The Company may redeem the First Lien Notes, in whole or in part, at any time or from time to time on or after February 1, 2023, at specified redemption prices, plus accrued and unpaid interest, if any, to the redemption date. At any time or from time to time prior to February 1, 2023, the Company may redeem the First Lien Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make whole premium, together with accrued and unpaid interest, if any, to the redemption date. In addition, the Company may redeem up to 40% of the aggregate principal amount of the outstanding First Lien Notes prior to June 1, 2023, with the net cash proceeds from certain equity offerings at a redemption price equal to 108.875% of their principal amount, together with accrued and unpaid interest, if any, to the redemption date. If the Company experiences specific kinds of changes of control, the Company is required to offer to purchase all of the First Lien Notes at a purchase price of 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The First Lien Notes Indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions; (iii) make other restricted payments and investments; (iv) create liens; (v) incur restrictions on the ability of restricted subsidiaries to pay dividends or make certain other payments; (vi) sell assets, including capital stock of restricted subsidiaries; (vii) enter into sale and leaseback transactions; (viii) merge or consolidate with other entities; and (ix) enter into transactions with affiliates. In addition, the First Lien Notes Indenture requires, among other things, the Company to provide financial and current reports to holders of the First Lien Notes or file such reports electronically with the SEC. Furthermore, the First Lien Notes Indenture requires that the future net proceeds from certain asset sales will be required to repay the First Lien Notes at a premium of 106.656%, until the aggregate principal amount of Notes outstanding is $350,000 or less, provided that the Company may retain the first $100,000 of such net proceeds (subject to compliance with the asset sale covenants in the Company’s other outstanding indentures) or use it for certain other permitted purposes. These covenants are subject to a number of exceptions, limitations and qualifications set forth in the Indenture, as well as suspension periods in certain circumstances.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document payable semiannually in cash in arrears on March 15 and September 15 of each year, commencing on March 15, 2020. In connection with the issuance of the 2024 Notes, the Company incurred approximately $9,300 of costs, which were deferred and are being amortized over the term of the 2024 Notes. The 2024 Notes are second lien secured obligations of the Company and its subsidiary guarantors. The 2024 Notes: (i) rank equal in right of payment to existing and future senior indebtedness of the Company and its subsidiary guarantors, including the obligations of the Company and its subsidiary guarantors under the Company’s credit facility;

(ii) are effectively subordinated to all obligations of the Company and its subsidiary guarantors that are either (A) secured by a lien on the Collateral (as defined below) that is senior or prior to the second-priority liens securing the 2024 Notes, including the first-priority liens securing borrowings under the Company’s credit facility and certain cash management and hedging obligations, or (B) secured by assets that do not constitute the Collateral, in each case to the extent of the value of the assets securing such obligations; (iii) are senior in right of payment to existing and future subordinated indebtedness of the Company and its subsidiary guarantors; (iv) are effectively senior to all existing and future unsecured debt of the Company and its subsidiary guarantors, but only to the extent of the value of the Collateral (after giving effect to any senior liens on the Collateral); and (v) are structurally subordinated in right of payment to all indebtedness and other liabilities of the Company’s existing and future subsidiaries that do not guarantee the 2024 Notes. The 2024 Notes are guaranteed on a full, senior secured, joint and several basis by each of the Company’s domestic restricted subsidiaries that is a borrower under the Company’s credit facility or that guarantees any of the Company’s debt or that of any of the Company’s domestic restricted subsidiaries under the Company’s credit facility and in the future by any of the Company’s domestic restricted subsidiaries that are borrowers under any credit facility or that guarantee any debt of the Company or any of its domestic restricted subsidiaries incurred under any credit facility (the "Guarantor Subsidiaries"). The Company may redeem the 2024 Notes, in whole or in part, at any time or from time to time on or after September 15, 2020, at specified redemption prices, plus accrued and unpaid interest, if any, to the redemption date. At any time or from time to time prior to September 15, 2020, the Company may redeem the 2024 Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make whole premium, together with accrued and unpaid interest, if any, to the redemption date. In addition, the Company may redeem up to 40% of the aggregate principal amount of the outstanding 2024 Notes prior to September 15, 2020, with the net cash proceeds from certain equity offerings at a redemption price equal to 106.250% of their principal amount, together with accrued and unpaid interest, if any, to the redemption date. If the Company experiences specific kinds of changes of control, the Company is required to offer to purchase all of the 2024 Notes at a purchase price of 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The 2024 Notes were issued pursuant to an indenture dated as of September 23, 2019 (the “Indenture”). The Indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions; (iii) make other restricted payments and investments; (iv) create liens; (v) incur restrictions on the ability of restricted subsidiaries to pay dividends or make certain other payments; (vi) sell assets, including capital stock of restricted subsidiaries; (vii) enter into sale and leaseback transactions; (viii) merge or consolidate with other entities; and (ix) enter into transactions with affiliates.

The 2022 Indenture contains covenants that, among other things, limit the Company's ability and the ability of any of the Guarantor Subsidiaries to (i) grant liens on its assets, (ii) make dividend payments, other distributions or other restricted payments, (iii) incur restrictions on the ability of the Guarantor Subsidiaries to pay dividends or make other payments, (iv) enter into sale and leaseback transactions, (v) merge, consolidate, transfer or dispose of substantially all of their assets, (vi) incur additional indebtedness, (vii) use the proceeds from sales of assets, including capital stock of restricted subsidiaries, and (viii) enter into transactions with affiliates.

Senior Notes Due 2025 On August 17, 2017, the Company issued $500,000 principal amount of 7.75% Senior Notes due August 15, 2025 (the "2025 Notes"). The 2025 Notes were sold at 100% of principal amount and have an effective interest yield of 7.75%. Interest is payable semiannually in cash in arrears on February 15 and August 15 of each year, commencing on February 15, 2018. In connection with the issuance of the 2025 Notes, the Company incurred approximately $8,779 of costs, which were deferred and are being amortized on the effective interest method over the term of the 2025 Notes. The 2025 Notes are the Company's senior unsecured obligations and rank equally in right of payment with all of its other existing and future senior unsecured indebtedness and senior in right of payment to all of its existing and future subordinated indebtedness. The 2025 Notes are guaranteed on a full, joint and several basis by each of the Guarantor Subsidiaries. The Company may redeem some or all of the 2025 Notes prior to August 15, 2020, by paying a "make-whole" premium. The Company may redeem some or all of the 2025 Notes on or after August 15, 2020, at specified redemption prices. In addition, prior to August 15, 2020, the Company may redeem up to 35% of the 2025 Notes with the net proceeds of certain equity offerings at a redemption price equal to 107.75% of the aggregate principal amount plus accrued and unpaid interest, if any, subject to certain limitations set forth in the indenture governing the 2025 Notes (the "2025 Indenture"). The Company is obligated to offer to repurchase the 2025 Notes at a price of (i) 101% of their principal amount plus accrued and unpaid interest, if any, as a result of certain change-of-control events and (ii) 100% of their principal amount plus accrued and unpaid interest, if any, in the event of certain asset sales. These restrictions and prohibitions are subject to certain qualifications and exceptions. The 2025 Indenture contains covenants that, among other things, limit the Company's ability and the ability of any of the guarantor subsidiaries to (i) grant liens on its assets, (ii) make dividend payments, other distributions or other restricted payments, (iii) incur restrictions on the ability of the Guarantor Subsidiaries to pay dividends or make other payments, (iv) enter into sale and leaseback transactions, (v) merge, consolidate, transfer or dispose of substantially all of their assets, (vi) incur additional indebtedness, (vii) use the proceeds from sales of assets, including capital stock of restricted subsidiaries, and (viii) enter into transactions with affiliates.

Financial Instruments Not Recorded at Fair Value Carrying amounts and the related estimated fair values of the Company's long-term debt not recorded at fair value in the accompanying consolidated financial statements are as follows:

March 31, 2021 March 31, 2020 Carrying Fair Carrying Fair Value Value Value Value $ 1,957,543 $ 2,085,204 $ 1,807,507 $ 1,559,455

The fair value of the long-term debt was calculated based on either interest rates available for debt with terms and maturities similar to the Company's existing debt arrangements or broker quotes on its existing debt (Level 2 inputs). Interest paid on indebtedness during the fiscal years ended March 31, 2021, 2020, and 2019, amounted to $116,515, $99,438 and $99,981, respectively. As of March 31, 2021, the maturities of long-term debt are as follows: 2022 — $5,972; 2023 — $239,883; 2024 — $2,790; 2025 — $1,226,364; 2026 — $500,781; and thereafter— $6,531 through 2032.

11. OTHER NONCURRENT LIABILITIES Other noncurrent liabilities are composed of the following items:

March 31, 2021 2020 Acquired contract liabilities, net $ 43,888 $ 92,962 Accrued warranties 9,519 31,036 Accrued workers' compensation 11,226 13,603 Noncurrent contract liabilities 100,737 91,265 Operating lease liabilities 26,060 54,687 Environmental contingencies 9,185 18,060 Income tax reserves 300 594 All other 6,463 3,962 Total other noncurrent liabilities $ 207,378 $ 306,169

12. INCOME TAXES The components of loss from continuing operations before income taxes are as follows:

Year ended March 31, 2021 2020 2019 Foreign $ (1,518) $ 33,399 $ (18,336) Domestic (446,511) (57,034) (314,236) $ (448,029) $ (23,635) $ (332,572)

The components of income tax (benefit) expense are as follows:

Year ended March 31, 2021 2020 2019 Current: Federal $ — $ (654) $ (1,253) State (315) 27 431 Foreign 3,372 3,602 3,335 3,057 2,975 2,513 Deferred: Federal — 2,748 (9,076) State — 73 1,593 Foreign (176) 2 (456) (176) 2,823 (7,939) $ 2,881 $ 5,798 $ (5,426)

A reconciliation of the statutory federal income tax rate to the effective tax rate is as follows:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Research and development tax credit 0.7 30.4 3.3 Foreign tax credits (0.3) (24.1) (0.7) Valuation allowance (25.5) 29.3 (28.6) Tax reform and CARES Act — (12.3) 0.4 Global Intangible Low-Taxed Income — (20.4) (1.3) Other (including foreign rate differential and FIN 48) 1.4 (2.8) 0.9 Effective income tax rate (0.7)% (24.5)% 1.6%

The components of deferred tax assets and liabilities are as follows:

March 31, 2021 2020 Deferred tax assets: Net operating loss and other credit carryforwards $ 345,071 $ 318,341 Inventory 21,484 17,521 Accruals and reserves 34,379 40,492 Interest carryforward 62,893 38,383 Pension and other postretirement benefits 89,952 152,048 Lease right-of-use assets 6,890 11,495 Prepaid expenses and other — 241 Acquired contract liabilities, net 7,504 21,771 568,173 600,292 Valuation allowance (512,554) (438,667) Net deferred tax assets 55,619 161,625 Deferred tax liabilities: Deferred revenue 22,342 38,458 Property and equipment 12,581 34,939 Goodwill and other intangible assets 21,701 80,740 Lease liabilities 5,848 14,928 Prepaid expenses and other 588 — 63,060 169,065 Net deferred tax liabilities $ 7,441 $ 7,440

The Company follows ASC 740, Income Taxes, which prescribes a recognition threshold and measurement attribute criteria for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return, as well as guidance on derecognition, classification, interest and penalties, disclosure and transition. The Company's policy is to release the tax effects from accumulated other comprehensive income when all of the related assets or liabilities that gave rise to the accumulated other comprehensive income have been derecognized. The Company has elected to treat global intangible low-taxed income (“GILTI”) as a period expense. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. When determining the amount of net deferred tax assets that are more likely than not to be realized, the Company assesses all available positive and negative evidence. This evidence includes, but is not limited to, prior earnings history, expected future earnings, carryback and carry-forward periods and the feasibility of ongoing tax strategies that could potentially enhance the likelihood of the realization of a deferred tax asset. The weight given to the positive and negative evidence is commensurate with the extent the evidence may be objectively verified. As such, it is generally difficult for positive evidence regarding projected future taxable income exclusive of reversing taxable temporary differences to outweigh objective negative evidence of recent financial reporting losses. Based on these criteria and the relative weighting of both the positive and negative evidence available, and in particular the activity surrounding the Company's prior earnings history, including the forward losses and intangible impairments previously recognized, management determined that it was necessary to establish a valuation allowance against principally all of its net deferred tax assets. Given the objective verifiable negative evidence of a three-year cumulative loss and the weighting of all available positive evidence, the Company excluded projected taxable income (aside from reversing taxable temporary differences) from the assessment of income that could be used as a source of taxable income to realize the deferred tax assets. During fiscal year 2021, the Company adjusted the valuation allowance against the consolidated net deferred tax asset by $73,887 primarily due to an increase in the net operating loss and changes to temporary differences related to the impairment of long-lived intangible assets, interest disallowance, and pension and other postretirement benefit plans. As of

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document March 31, 2021, management determined that it was necessary to maintain a valuation allowance against principally all of its net deferred tax assets. As of March 31, 2021, the Company has net operating loss carryforwards of $659,278, $1,427,890, and $140,839 for U.S. federal, state, and foreign jurisdictions, respectively. The effective income tax rate for the fiscal year ended March 31, 2021, was (0.7)% as compared with (24.5)% for the fiscal year ended March 31, 2020. The effective income tax rate for the fiscal year ended March 31, 2021, included the benefit of the R&D tax credit of $3,076, the benefit of the foreign tax rate differences of $1,244, and the change in the valuation allowance of $114,283. Due to the current year pretax loss, the effective tax rate drivers on a percentage basis are amplified. Accordingly, a year-over-year comparison of the effective tax rate may not be indicative of changes in the Company's tax position.

The Company has been granted income tax holiday as an incentive to attract foreign investment by the Government of Thailand. The tax holidays expire in various years through 2026. The Company does not have any other tax holidays in the jurisdictions in which it operates. The income tax benefit attributable to the tax status of our subsidiaries in Thailand was approximately $0 or $0.00 per diluted share in fiscal 2021, $1,932 or $0.04 per diluted share in fiscal 2020 and $2,160 or $0.04 per diluted share in fiscal 2019. At March 31, 2021, cumulative undistributed earnings of foreign subsidiaries, for which no U.S. income or foreign withholding taxes have been recorded is $162,467. As the Company currently intends to indefinitely reinvest all such earnings, no provision has been made for income taxes that may become payable upon distribution of such earnings, and it is not practicable to determine the amount of the related unrecognized deferred income tax liability. The Company has classified uncertain tax positions as noncurrent income tax liabilities unless expected to be paid in one year. As of March 31, 2021 and 2020, the total amount of unrecognized tax benefits was $11,536 and $18,965, respectively, all of which would impact the effective rate, if recognized. The Company anticipates that total unrecognized tax benefits may be reduced by zero in the next 12 months. With a few exceptions, the Company is no longer subject to U.S. federal, state, or local income tax examinations, or foreign income tax examinations by tax authorities, for fiscal years ended before March 31, 2014. As of March 31, 2021, the Company is not subject to any income tax examinations. The Company has filed appeals in a prior state examination related to fiscal years ended March 31, 1999 through March 31, 2005. The Company believes appropriate provisions for all outstanding issues have been made for all jurisdictions and all open years. A reconciliation of the liability for uncertain tax positions, which are included in deferred taxes for the fiscal years ended March 31, 2021 and 2020, follows:

Year ended March 31, 2021 2020 2019 Beginning balance $ 19,127 $ 19,373 $ 11,759 Adjustments for tax positions related to the current year 311 1,057 7,364 Adjustments for tax positions of prior years (7,688) (1,303) 250 Ending balance $ 11,750 $ 19,127 $ 19,373

13. STOCKHOLDERS' DEFICIT On February 4, 2021, the Company implemented a new “at the market” stock issuance program by entering into an Equity Distribution Agreement (the “Equity Distribution Agreement”) with Citigroup Global Markets Inc. (the “Manager”). Under the terms of the Equity Distribution Agreement, the Company may from time to time to or through the Manager, acting as agent and/or principal, offer and sell shares of its common stock (the “Shares”), par value $0.001 per share (“Common Stock”) having a gross sales price of up to $150,000. From the date the program was implemented through March 31, 2021, the Company completed the program, selling 9,178,752 shares with a gross sales price of $150,000 for total proceeds net of stock issuance costs of $145,383. In March 2019, the Company adopted a tax benefits preservation plan (the "Plan") designed to preserve Triumph’s ability to utilize its net operating loss carryforwards and other tax attributes (collectively, "Tax Benefits"). The Plan is similar to plans adopted by other public companies with significant Tax Benefits. The Company obtained stockholder approval for the Plan as well as an amendment to the Company’s amended and restated certificate of incorporation that permitted the issuance of Rights (as defined below) related to preferred stock, at its annual meeting of stockholders in 2019. Under the Plan, Triumph declared a dividend distribution of one right (a “Right”) for each share of its common stock outstanding at the close of business on March 25, 2019. The Rights trade with Triumph’s common shares and will expire on March 13, 2022. The Rights also will expire: (i) if the Rights are redeemed or exchanged as provided in the Plan; (ii) if the Board determines that the Plan is no longer necessary or desirable for the preservation of the Tax Benefits; or (iii) if the Board determines that no Tax Benefits, once realized, as applicable, may be carried forward (in which case, the Rights will expire on the first date of the relevant taxable year for which such determination is made).

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Pursuant to the Plan, if a stockholder (or group) becomes a 5% stockholder without meeting certain customary exceptions, the Rights become exercisable and entitle stockholders (other than the 5% stockholder or group causing the rights to become exercisable) to purchase additional shares of Triumph at a significant discount, resulting in significant dilution in the economic interest and voting power of the 5% stockholder or group causing the Rights to become exercisable. Stockholders owning five percent or more of Triumph’s outstanding shares at the time the Plan was adopted were grandfathered and will only cause the Rights to distribute and become exercisable if they acquire an additional one percent or more of Triumph’s outstanding shares. Under the Plan, the Board has the ability to determine in its sole discretion that any person shall not be deemed an acquiring person and therefore that the Rights shall not become exercisable if such person becomes a 5% stockholder. The adoption of the Plan and the dividend distribution did not have an impact on the Company’s consolidated financial statements.

In 2014, the Company's Board of Directors authorized an increase in the Company's existing stock repurchase program by up to 5,000,000 shares of its common stock in addition to the 500,800 shares authorized under prior authorizations. As of March 31, 2021, the Company remains able to purchase an additional 2,277,789 shares. Repurchases may be made from time to time in open market transactions, block purchases, privately negotiated transactions or otherwise at prevailing prices. No time limit has been set for completion of the program. The holders of the common stock are entitled to one vote per share on all matters to be voted upon by the stockholders of Triumph. The Company has preferred stock of $0.01 par value, 250,000 shares authorized. At March 31, 2021 and 2020, zero shares of preferred stock were outstanding.

Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss ("AOCI") by component for the years ended March 31, 2021 and 2020, were as follows:

Defined Benefit Unrealized Gains Pension Plans Currency and Losses on and Other Translation Derivative Postretirement Adjustment Instruments Benefits Total (1) March 31, 2019 $ (48,606) $ (1,130) $ (466,275) $ (516,011) AOCI before reclassifications (13,439) (1,611) (208,835) (223,885) Amounts reclassified from AOCI — (1,562) (4,990) (2) (6,552) Net current period OCI (13,439) (3,173) (213,825) (230,437) March 31, 2020 (62,045) (4,303) (680,100) (746,448) AOCI before reclassifications 19,884 5,891 168,701 194,476 Amounts reclassified from AOCI — (573) 22,353 (2) 21,780 Net current period OCI 19,884 5,318 191,054 216,256 March 31, 2021 $ (42,161) $ 1,015 $ (489,046) $ (530,192)

(1) Net of tax. (2) Includes amortization of actuarial losses and recognized prior service (credits) costs, which are included in the net periodic pension cost

14. LOSS PER SHARE The following is a reconciliation between the weighted average common shares outstanding used in the calculation of basic and diluted loss per share:

Year ended March 31, 2021 2020 2019 (thousands) Weighted average common shares outstanding—basic 52,739 50,494 49,698 Net effect of dilutive stock options and non-vested stock(1) — — — Weighted average common shares outstanding—diluted 52,739 50,494 49,698

(1) For the fiscal years ended March 31, 2021, 2020, and 2019, the shares that could potentially dilute earnings per share in the future but were not included in diluted weighted average common shares outstanding because to do so would have been anti-dilutive were immaterial.

15. EMPLOYEE BENEFIT PLANS Defined Contribution Pension Plan The Company sponsors a defined contribution 401(k) plan, under which salaried and certain hourly employees may defer a portion of their compensation. Eligible participants may contribute to the plan up to the allowable amount as determined by

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document the plan of their regular compensation before taxes. The Company generally matches contributions up to 75% of the first 6% of compensation contributed by the participant. All contributions and Company matches are invested at the direction of the employee in one or more investment options offered under the plan. Company matching contributions vest immediately and aggregated to $1,665, $14,763, and $13,685 for the fiscal years ended March 31, 2021, 2020, and 2019, respectively. Effective April 1, 2020, the Company suspended its 401(k) matching contribution for non-represented employees and some represented employees for fiscal year 2021 and has continued the suspension for fiscal year 2022.

Defined Benefit Pension and Other Postretirement Benefit Plans The Company sponsors several defined benefit pension plans covering some of its employees. Most employees are ineligible to participate in the plans or have ceased to accrue additional benefits under the plans. Benefits under the defined benefit plans are based on years of service and, for most non-represented employees, on average compensation for certain years. It is the Company's policy to fund at least the minimum amount required for all qualified plans, using actuarial cost methods and assumptions acceptable under applicable government regulations, by making payments into a trust separate from us. In addition to the defined benefit pension plans, the Company provides certain health care benefits for eligible retired employees. Such benefits are unfunded as of March 31, 2021. Employees achieve eligibility to participate in these contributory plans upon retirement from active service if they meet specified age and years of service requirements. Current plan documents reserve the right to amend or terminate the plans at any time, subject to applicable collective bargaining requirements for represented employees. During the year ended March 31, 2020, the Company reached agreement with two unions whose members make up the vast majority of participants eligible for retiree healthcare benefits. Under the terms of these agreements, the right to benefits under the current program ceased for all represented participants (actively employed and retired) by April 1, 2020. Company-funded notional health reimbursement accounts were provided to retired participants (and their dependents) whose eligibility for current benefits ended under the new agreement. The average size of each account is immaterial and the Company anticipates that these accounts will be fully drawn down in one year. These changes served to reduce the Company’s other postretirement benefit (“OPEB”) liability by approximately $99,000. In accordance with ASC 715, the Company has recognized the funded status of the benefit obligation as of March 31, 2021 and 2020, on the accompanying consolidated balance sheets. The funded status is measured as the difference between the fair value of the plans' assets and the PBO or accumulated postretirement benefit obligation of the plan. The majority of the plan assets are publicly traded investments which were valued based on the market price as of the measurement date. Investments that are not publicly traded were valued based on the estimated fair value of those investments based on the Company’s evaluation of data from fund managers and comparable market data. The following table sets forth the Company's consolidated defined benefit pension plans for its union and non-union employees as of March 31, 2021 and 2020, and the amounts recorded on the consolidated balance sheets at March 31, 2021 and 2020. Company contributions include amounts contributed directly to plan assets and indirectly as benefits paid from the Company's assets. Benefit payments reflect the total benefits paid from the plans and the Company's assets. Information on the plans includes both the domestic qualified and nonqualified plans and the foreign qualified plans.

Pension Benefits Other Postretirement Benefits Year ended March 31, Year ended March 31, 2021 2020 2021 2020 Change in projected benefit obligations Projected benefit obligation at beginning of year $ 2,254,985 $ 2,234,734 $ 7,150 $ 109,455 Service cost 1,537 2,336 — 62 Interest cost 64,599 68,446 112 1,559 Actuarial loss (gain) 83,263 138,652 (156) 3,472 Plan amendments — 4,898 — (99,080) Curtailments — 22,732 — — Divestitures — (55,354) — — Participant contributions 164 204 — 252 Settlements — (14,579) — — Special termination benefits — 11,642 — — Benefits paid (179,956) (156,084) (2,182) (8,570) Currency translation adjustment 5,656 (2,642) — — Projected benefit obligation at end of year $ 2,230,248 $ 2,254,985 $ 4,924 $ 7,150 Accumulated benefit obligation at end of year $ 2,228,830 $ 2,252,126 $ 4,924 $ 7,150 Assumptions used to determine benefit obligations at end of year

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Discount rate 2.05 - 3.17% 2.47 - 3.32% 2.51% 3.00% Rate of compensation increase 2.80 - 3.50% 3.50 - 4.50% N/A N/A

Pension Benefits Other Postretirement Benefits Year ended March 31, Year ended March 31, 2021 2020 2021 2020 Change in fair value of plan assets Fair value of plan assets at beginning of year $ 1,598,045 $ 1,796,111 $ — $ — Actual return on plan assets 388,392 (20,869) — — Settlements — (14,579) — — Participant contributions 164 204 — 252 Divestitures — (55,354) — — Company contributions 41,201 51,372 2,182 8,319 Benefits paid (179,956) (156,084) (2,182) (8,571) Currency translation adjustment 6,117 (2,756) — — Fair value of plan assets at end of year $ 1,853,963 $ 1,598,045 $ — $ — Funded status (underfunded) Funded status $ (376,285) $ (656,940) $ (4,924) $ (7,150) Reconciliation of amounts recognized on the consolidated balance sheets Pension asset—noncurrent $ 7,515 $ 1,503 $ — $ — Accrued benefit liability—current (1,097) (753) (3,372) (4,775) Accrued benefit liability—noncurrent (382,703) (657,690) (1,552) (2,375) Net amount recognized $ (376,285) $ (656,940) $ (4,924) $ (7,150) Reconciliation of amounts recognized in accumulated other comprehensive income Prior service credits $ 4,621 $ 5,595 $ (54,109) $ (59,214) Actuarial losses (gains) 755,234 953,913 (53,542) (58,151) Income tax (benefits) expenses related to above items (204,594) (204,594) 42,016 42,016 Unamortized benefit plan costs (gains) $ 555,261 $ 754,914 $ (65,635) $ (75,349)

The components of net periodic benefit cost for fiscal years ended March 31, 2021, 2020, and 2019, are as follows:

Pension Benefits Other Postretirement Benefits Year Ended March 31, Year Ended March 31, 2021 2020 2019 2021 2020 2019 Components of net periodic pension cost Service cost $ 1,537 $ 2,336 $ 3,292 $ 0 $ 62 $ 227 Interest cost 64,599 68,446 79,446 112 1,559 4,039 Expected return on plan assets (136,581) (141,972) (145,361) — — — Amortization of prior service credit cost 974 (874) (3,619) (5,105) (4,872) (4,655) Amortization of net loss 31,248 28,288 20,151 (4,766) (6,361) (9,851) Curtailment loss (gain) — 23,690 — — (49,491) — Settlements — 29,313 — — — — Special termination benefits — 11,642 4,032 — — — Total net periodic benefit (income) expense $ (38,223) $ 20,869 $ (42,059) $ (9,759) $ (59,103) $(10,240) Assumptions used to determine net periodic pension cost

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Discount rate 2.47 - 2.54 - 2.65 - 2.68 - 3.32% 3.88% 4.01% 3.00% 3.77% 3.93% Expected long-term rate of return on 5.00 - 5.00 - 5.00 - plan assets 8.00% 8.00% 8.00% N/A N/A N/A Rate of compensation increase 3.50 - 3.50 - 3.50 - 4.50% 4.50% 4.50% N/A N/A N/A

The discount rate is determined annually as of each measurement date, based on a review of yield rates associated with long-term, high-quality corporate bonds. At the end of each year, the discount rate is primarily determined using the results of bond yield curve models based on a portfolio of high-quality bonds matching notional cash inflows with the expected benefit payments for each significant benefit plan. The expected return on plan assets is determined based on a MRVA, which is a smoothed asset value. As disclosed in Note 1, the Company changed its method of accounting or the determination of the MRVA for its fixed income securities within the qualified U.S. defined benefit plan. For these fixed income securities, the MRVA is determined using the fair value of the fixed income assets. For all other classes of pension assets, the MRVA is calculated by recognizing investment performance that is different from that expected on a straight-line basis over five years. Actuarial gains and losses are amortized over the average remaining life expectancy of inactive participants for plans that are predominantly inactive and over the expected future service for active participants for other plans, but only to the extent unrecognized gains or losses exceed a corridor equal to 10% of the greater of the projected benefit obligation or market-related value of assets. The Company estimates the service and interest cost of its pension and OPEB plans by using the specific spot rates derived from the yield curve used to discount the cash flows reflected in the measurement of the benefit obligation. The Company believes this approach provides a precise measurement of service and interest costs due to the correlation between projected benefit cash flows to the corresponding spot yield curve rates. The Company amortizes actuarial gains and losses over the average life expectancy of inactive plan participants because almost all plan participants are inactive. During the fiscal year ended March 31, 2021, the Society of Actuaries released a new and updated mortality projection scale. The Company has reflected this new release in the measurement of its U.S. pension and OPEB plans as of March 31, 2021. This change resulted in a decrease in the benefit obligation. The projected benefit obligation assumptions impacting net actuarial loss (gain) consist of changes in discount and mortality rates, as well as changes in plan experience. A significant component of the decrease in the pension plans’ actuarial losses in fiscal 2021 was the change in discount rates. The Company periodically experiences events or makes changes to its benefit plans that result in curtailment or special charges. Curtailments are recognized when events occur that significantly reduce the expected years of future service of present employees or eliminates the benefits for a significant number of employees for some or all of their future service. Curtailment losses are recognized when it is probable the curtailment will occur and the effects are reasonably estimable. Curtailment gains are recognized when the related employees are terminated or a plan amendment is adopted, whichever is applicable. As required under ASC 715, the Company remeasures plan assets and obligations during an interim period whenever a significant event occurs that results in a material change in the net periodic pension cost. The determination of significance is based on judgment and consideration of events and circumstances impacting the pension costs. The following summarizes the key events whose effects on net periodic benefit cost and obligations are included in the tables above: • As disclosed in Note 3, in March 2020, the Company transferred approximately $55,354 of pension assets and liabilities to the buyer of its Nashville manufacturing operations. The divestiture transaction and resulting transfer resulted in a settlement charge of approximately $28,452 and a curtailment charge of approximately $214. These amounts are included in non-service defined benefit income on the consolidated statements of operations for the year ended March 31, 2020. • In September 2019, the Company and the union which represents a portion of the workforce at the Company’s Grand Prairie, TX, facility, in conjunction with an announced shutdown of this facility, agreed to changes to the pension and retiree welfare plans for represented plan members. Effective April 1, 2020, all current retiree welfare benefits for the union-represented retirees and active employees will cease. A new benefit consisting of a one-time credit to Heath Reimbursement Accounts for the current retirees and their covered dependents will be provided. The Company and the union also agreed to increased pension benefits which are effective with the ratification of the agreement. This agreement resulted in a decrease of the projected other post-employment benefits ("OPEB") benefit obligation of $61,766. It also resulted in a one-time OPEB curtailment gain of $41,128. As a result of the planned shutdown, subsidized early retirement provisions within the retirement plan and the agreed-to pension

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document benefit increases, a pension curtailment loss of $23,476 was recognized, along with a one-time charge of $11,642 for special termination benefits. The net curtailment gain and charge for special termination benefits are included in non-service defined benefit income on the consolidated statements of operations for the year ended March 31, 2020.

• In August 2019, the Company and the union which represents a portion of the workforce at the Company’s Nashville, TN, facility agreed to changes to the pension and retiree welfare plans for represented plan members. Effective January 1, 2020, all current retiree welfare benefits for the union-represented retirees and active employees will cease. A new benefit consisting of a one-time credit to Heath Reimbursement Accounts for the current retirees and their covered dependents will be provided. The Company and the union also agreed to increased pension benefits which are effective on February 1, 2020, and the union also agreed to increased pension benefits which are effective with the ratification of the agreement. This agreement resulted in a decrease of the projected OPEB benefit obligation of $34,731. It also resulted in a one-time OPEB curtailment gain of $8,363. The agreed-to pension benefit increases resulted in an increase of the projected pension benefit obligation of $4,898. The curtailment gain is included in non-service defined benefit income on the consolidated statements of operations for the year ended March 31, 2020. • In February 2019, the Company transferred its Global 7500 wing manufacturing operations to Bombardier. In conjunction with this transaction, the Company provided special termination pension benefits to certain pension participants who transferred employment from Triumph to Bombardier. This change resulted in the recognition of a charge of $4,032 for special termination benefits. The special termination benefits charge is included in non-service defined benefit income on the consolidated statements of operations for the year ended March 31, 2019.

Expected Pension Benefit Payments The total estimated future benefit payments for the pension plans are expected to be paid from the plan assets and company funds. The OPEB payments reflect the Company's portion of the funding. Estimated future benefit payments from plan assets and Company funds for the next ten years are as follows:

Other Pension Postretirement Year Benefits Benefits* 2022 $ 192,745 $ 3,375 2023 163,947 169 2024 163,676 161 2025 156,660 153 2026 154,324 143 2027 - 2031 705,477 585

Plan Assets, Investment Policy and Strategy The table below sets forth the Company's target asset allocation for fiscal 2021 and the actual asset allocations at March 31, 2021 and 2020.

Actual Allocation Target Allocation March 31, Asset Category Fiscal 2021 2021 2020 Equity securities 40% - 50% 50% 42% Fixed income securities 40% - 50% 39 50 Alternative investment funds 0% - 10% 5 6 Other 0% - 5% 6 2 Total 100% 100%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Asset/liability studies are conducted on a regular basis to provide guidance in setting investment goals for the pension portfolio and its asset allocation. The asset allocation aims to prudently achieve a strong, risk-adjusted return while seeking to minimize funding level volatility and improve the funded status of the plans. The pension plans currently employ a liability-driven investment ("LDI") approach, where assets and liabilities move in the same direction. The goal is to limit the volatility of the funding status and cover part, but not all, of the changes in liabilities. Most of the liabilities' changes are due to interest rate movements. To balance expected risk and return, allocation targets are established and monitored against acceptable ranges. All investment policies and procedures are designed to ensure that the plans' investments are in compliance with the Employee Retirement Income Security Act of 1974 ("ERISA"). Guidelines are established defining permitted investments within each asset class. Each investment manager has contractual guidelines to ensure that investments are made within the parameters of their asset class or in

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Triumph Group, Inc. Notes to Consolidated Financial Statements (Dollars in thousands, except per share data) the case of multi-asset class managers, the parameters of their multi-asset class strategy. Certain investments are not permitted at any time, including investment directly in employer securities and uncovered short sales. The tables below provide the fair values of the Company's plan assets at March 31, 2021 and 2020, by asset category. The table also identifies the level of inputs used to determine the fair value of assets in each category (refer to Note 2 for definition of levels).

March 31, 2021 Level 1 Level 2 Level 3 Total Assets Cash and cash equivalents $ 42,003 $ — $ — $ 42,003 Equity securities International 164,298 — — 164,298 U.S. equity 7,410 — — 7,410 U.S. commingled fund 537,813 — — 537,813 International commingled fund 42,944 — — 42,944 Fixed income securities Corporate bonds — 12,231 — 12,231 Government securities — 103,853 — 103,853 U.S. commingled fund 509,760 — — 509,760 Other Insurance contracts — — 9,813 9,813 Total investment in securities—assets $ 1,304,228 $ 116,084 $ 9,813 $ 1,430,125 U.S. equity commingled fund 17,289 International equity commingled fund 158,447 U.S. fixed income commingled fund 59,203 International fixed income commingled fund 1,599 Government securities commingled fund 24,384 Private equity and infrastructure 95,880 Other 1,549 Total investment measured at NAV as a practical expedient $ 358,351 Receivables 67,378 Payables (1,892) Total plan assets $ 1,853,962

March 31, 2020 Level 1 Level 2 Level 3 Total Assets Cash and cash equivalents $ 35,110 $ — $ — $ 35,110 Equity securities International 155,389 — — 155,389 U.S. equity 2 — — 2 U.S. commingled fund 400,131 — — 400,131 International commingled fund 34,014 — — 34,014 Fixed income securities Corporate bonds — 23,672 — 23,672 Government securities — 93,677 — 93,677 U.S. commingled fund 605,487 — — 605,487 Other Insurance contracts — — 910 910 Total investment in securities—assets $ 1,230,133 $ 117,349 $ 910 $ 1,348,392 U.S. equity commingled fund 8,180 International equity commingled fund 67,101 U.S. fixed income commingled fund 73,838 International fixed income commingled fund 1,380 Government securities commingled fund 8,333 Private equity and infrastructure 89,797 Other 1,534 Total investment measured at NAV as a practical expedient $ 250,163 Receivables 3,292 Payables (3,802) Total plan assets $ 1,598,045

Cash equivalents and other short-term investments are primarily held in registered short-term investment vehicles which are valued using a market approach based on quoted market prices of similar instruments. Public equity securities, including common stock, are primarily valued using a market approach based on the closing fair market prices of identical instruments in the principal market on which they are traded. Commingled funds that are open- ended mutual funds for which the fair value per share is determined and published by the respective mutual fund sponsor and is the basis for current observable transactions are categorized as Level 1 fair value measures. Investments in commingled funds and private equity and infrastructure funds are carried at net asset value ("NAV") as a practical expedient to estimate fair value. The NAV is the total value of the fund divided by the number of shares outstanding. Adjustments to NAV, if any, are determined based on evaluation of data provided by fund managers, including valuation of the underlying investments derived using inputs such as cost, operating results, discounted future cash flows and market-based comparable data. In accordance with ASC 820-10, investments that are measured at NAV practical expedient are not classified in the fair value hierarchy; however, their fair value amounts are presented in these tables to permit reconciliation of the fair value hierarchy to the total plan assets disclosed in this footnote. Corporate, government agency bonds and mortgage-backed securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported observable trades for identical or comparable instruments. Other investments include private equity and infrastructure funds and insurance contracts. Investments in private equity and infrastructure funds are carried at estimated fair value based on NAV as a practical expedient and other appropriate adjustments to NAV as determined based on an evaluation of data provided by fund managers, including valuations of the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document underlying investments derived using inputs such as cost, operating results, discounted future cash flows, and market- based comparable data.

Assumptions and Sensitivities The discount rate is determined as of each measurement date, based on a review of yield rates associated with long-term, high-quality corporate bonds. The calculation separately discounts benefit payments using the spot rates from a long-term, high-quality corporate bond yield curve.

The effect of a 25 basis-point change in discount rates as of March 31, 2021, is shown below:

Other Pension Postretirement Benefits Benefits Increase of 25 basis points Obligation *$ (52,031) $ (33) Net periodic expense 586 4 Decrease of 25 basis points Obligation *$ 54,288 $ 34 Net periodic expense (707) 4

* Excludes impact to plan assets due to the LDI investment approach discussed above under "Plan Assets, Investment Policy and Strategy." The long-term rate of return assumption represents the expected average rate of earnings on the funds invested to provide for the benefits included in the benefit obligations. The long-term rate of return assumption is determined based on a number of factors, including historical market index returns, the anticipated long-term asset allocation of the plans, historical plan return data, plan expenses and the potential to outperform market index returns. For fiscal 2022, the expected long- term rate of return is 5.00%- 8.00%.

Anticipated Contributions to Defined Benefit In the year ended March 31, 2021, the Company contributed 2,849,002 shares of common stock to the separate pension plan trust with an aggregate contribution value of approximately $40,000 on the contribution date. The Company does not expect to contribute to its qualified U.S. defined benefit pension plans during fiscal 2022. No plan assets are expected to be returned to the Company in fiscal 2022.

16. STOCK COMPENSATION PLANS The Company has stock incentive plans under which employees and non-employee directors may be granted equity awards in the form of stock options with an exercise price equal to the fair value of the Company’s stock on the grant date or in the form of restricted stock or restricted stock units that vest pursuant to service conditions and, in some cases, performance or market conditions. The stock incentive and compensation plans under which outstanding equity awards have been granted to employees, officers and non-employee directors are the Triumph Group 2018 Equity Plan (the "2018 Plan"), the Triumph Group 2013 Equity and Cash Incentive Plan (the “2013 Plan”), the 2016 Directors’ Equity Compensation Plan, as amended (the “Directors’ Plan”), and the Amended and Restated Directors’ Stock Incentive Plan (the “Prior Directors’ Plan”). The Prior Directors’ Plan expired by its terms during fiscal 2017. The current stock incentive and compensation plans used for future awards are the 2013 Plan for employees, officers and consultants, the Directors’ Plan, and the 2018 Plan. The 2018 Plan, the 2013 Plan, the Directors’ Plan, and the Prior Directors’ Plan are collectively referred to in this note as the plans. Management and the compensation committee have utilized restricted stock and restricted stock units as its primary form of share-based incentive compensation. Restricted stock and restricted stock units that vest solely pursuant to service conditions generally vest on a grade basis over a three year period and are subject to forfeiture should the grantee’s employment be terminated prior to an applicable vesting date. Management and the compensation committee have also granted restricted stock and restricted stock units, referred to herein as performance restricted stock awards, that vest pursuant to a combination of service conditions as well as market and performance conditions. Such awards generally vest on a cliff vesting basis at the end of a three year service period, subject to specific market or performance conditions. The market and performance conditions may result in the awards vesting below target, including zero vesting awards if certain threshold vesting conditions are not met, up to 200% of the number of awards granted, if certain vesting conditions are exceeded. .The share-based payment expense arising from restricted stock and restricted stock unit expense is included in capital in excess of par value. The fair value of restricted stock or restricted stock units awards subject only to service conditions or service and performance conditions is determined by the product of the number of shares granted and the grant date market price of the Company's common stock. The fair value of restricted stock or restricted stock units awards

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document that contain market conditions is determined by the product of the number of shares granted and the grant date fair value of such an award value using a Monte Carlo valuation methodology. The fair value of share-based compensation granted to employees was $13,103, $13,249, and $15,911 during the fiscal years ended March 31, 2021, 2020, and 2019, respectively. The fair value of restricted stock and restricted stock unit awards is expensed on a straight-line basis over the requisite service period which is typically the vesting period. The Company recognized $12,701, $11,062 and $10,259 of share-based compensation expense during the fiscal years ended March 31, 2021, 2020, and 2019, respectively. The Company has classified share-based compensation within selling, general and administrative expenses to correspond with the same line item as the majority of the cash compensation paid to employees.

At March 31, 2021 and 2020, 2,019,502 shares and 1,564,791 shares of common stock, respectively, were available for issuance under the plans. A summary of the status of the Company's non-vested shares/units of restricted stock and deferred stock units as of March 31, 2021, and changes during the fiscal year ended March 31, 2021, is presented below.

Weighted- Average Grant Shares Date Fair Value Non-vested restricted awards and deferred stock units at March 31, 2020 1,159,630 $ 24.40 Granted 1,154,181 11.35 Vested (396,847) 20.25 Forfeited (218,205) 17.58 Non-vested restricted awards and deferred stock units at March 31, 2021 1,698,759 $ 15.46

The fair value of employee restricted stock which vested during fiscal 2021, 2020 and 2019 was $8,037, $7,052, and $7,031, respectively. Upon the vesting of restricted stock units, the Company first transfers treasury stock, then will issue new shares. Expected future compensation expense on restricted stock net of expected forfeitures, is approximately $8,376, which is expected to be recognized over the remaining weighted average vesting period of 1.5 years.

17. COMMITMENTS AND CONTINGENCIES Certain of the Company's business operations and facilities are subject to a number of federal, state, local and foreign environmental laws and regulations. Former owners generally indemnify the Company for environmental liabilities related to the assets and businesses acquired which existed prior to the acquisition dates. In the opinion of management, there are no significant environmental contingent liabilities which would have a material effect on the financial condition or operating results of the Company which are not covered by such indemnification. As the Company completes its restructuring plans as disclosed in Note 18, including the disposal of certain facilities, the Company may be exposed to additional costs such as environmental remediation obligations, lease termination costs, or supplier claims which may have a material effect on its financial position or results of operations when such matters arise and a reasonable estimate of the costs can be made. The Company's risk related to pension projected obligations as of March 31, 2021, is significant. This amount is currently in excess of the related plan assets. Benefit plan assets are invested in a diversified portfolio of investments in both the equity and debt categories, as well as limited investments in real estate and other alternative investments. The market value of all of these investment categories may be adversely affected by external events and the movements and volatility in the financial markets, including such events as the current credit and real estate market conditions. Declines in the market values of the Company’s plan assets could expose the total asset balance to significant risk which may cause an increase to future funding requirements. Some raw materials and operating supplies are subject to price and supply fluctuations caused by market dynamics. The Company's strategic sourcing initiatives seek to find ways of mitigating the inflationary pressures of the marketplace. In recent years, these inflationary pressures have affected the market for raw materials. However, the Company believes that raw material prices will remain stable through the remainder of fiscal 2022 and after that, experience increases that are in line with inflation. Additionally, the Company generally does not employ forward contracts or other financial instruments to hedge commodity price risk. The Company's suppliers' failure to provide acceptable raw materials, components, kits and subassemblies would adversely affect production schedules and contract profitability. The Company maintains an extensive qualification and performance surveillance system to control risk associated with such supply base reliance. The Company is dependent on third parties for certain information technology services. To a lesser extent, the Company is also exposed to fluctuations in the prices of certain utilities and services, such as electricity, natural gas, chemical processing and freight. The Company utilizes a range of long-term agreements and strategic aggregated sourcing to optimize procurement expense and supply risk in these categories. In the ordinary course of business, the Company is involved in disputes, claims and lawsuits with employees, suppliers and customers, as well as governmental and regulatory inquiries, that it deems to be immaterial. Some may involve claims or potential claims of substantial damages, fines, penalties or injunctive relief. While the Company cannot predict the outcome

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document of any pending or future litigation or proceeding and no assurances can be given, the Company does not believe that any pending matter will have a material effect, individually or in the aggregate, on its financial position or results of operations.

18. RESTRUCTURING COSTS During the fiscal years ended March 31, 2017 and 2016, the Company committed to restructuring plans involving certain of its businesses, as well as the consolidation of certain of its facilities. With the exception of certain consolidations to be completed in future years, these plans were substantially complete as of March 31, 2020. During the year ended March 31, 2021, the Company incurred costs of $7,871, $36,879, and $8,474, within Systems & Support, Aerospace Structures, and its corporate headquarters, respectively, for total restructuring costs of $53,224 associated with new restructuring plans. Of the restructuring costs within Aerospace Structures, approximately $17,737 pertained to postemployment benefits arising from reductions in force, $15,781 pertained to facility closures, and the remaining $2,937 pertained to third-party consulting and other costs. The restructuring costs within Systems & Support and Corporate are primarily related to postemployment benefits arising from reductions in force and third-party consulting costs. The majority of restructuring plans are complete and the related costs have been settled as of March 31, 2021, with the exception of consolidated postretirement benefits associated with reductions in force of approximately $19,260 included in accrued expenses on the accompanying consolidated balance sheet as of March 31, 2021.

19. CUSTOMER CONCENTRATION Trade and other accounts receivable from Boeing represented approximately 23% and 21% of total accounts receivable as of March 31, 2021 and 2020, respectively. Trade and other accounts receivables from Bombardier represented approximately 1% and 16% of total accounts receivable as of March 31, 2021 and 2020, respectively, and include receivables from transition services. The Company had no other significant concentrations of credit risk. Sales to Boeing for fiscal 2021 were $698,372, or 37% of net sales, of which $225,027 and $473,346 were from Systems & Support and Aerospace Structures, respectively. Sales to Boeing for fiscal 2020 were $983,763, or 34% of net sales, of which $254,660 and $729,103 were from Systems & Support and Aerospace Structures, respectively. Sales to Boeing for fiscal 2019 were $1,031,106, or 31% of net sales, of which $243,046 and $788,061 were from Systems & Support and Aerospace Structures, respectively. Sales to Gulfstream for fiscal 2021 were less than 10% of net sales. Sales to Gulfstream for fiscal 2020 were $337,173, or 12% of net sales, of which $3,250 and $333,924 were from Systems & Support and Aerospace Structures, respectively. Sales to Gulfstream for fiscal 2019 were $361,451, or 11% of net sales, of which $3,067 and $358,383 were from Systems & Support and Aerospace Structures, respectively. No other single customer accounted for more than 10% of the Company's net sales; however, the loss of any significant customer, including Boeing and/or Gulfstream, could have a material adverse effect on the Company and its operating subsidiaries. The Company currently generates a majority of its revenue from clients in the commercial aerospace industry, the business jet industry and the military. The Company's growth and financial results are largely dependent on continued demand for its products and services from clients in these industries. When these industries experiences a downturn, it is possible that customers in these sectors may conduct less business with the Company.

20. COLLECTIVE BARGAINING AGREEMENTS Approximately 19% of the Company's labor force is covered under collective bargaining agreements. As of March 31, 2021, none of the Company's collectively bargained workforce are working under contracts that have expired, and 16% of the Company’s collectively bargained workforce are working under contracts that are set to expire within one year. During the fiscal year ended March 31, 2020, effects and closure agreements were made for the Tulsa, Oklahoma, and Grand Prairie, Texas, locations. In addition, the Company and leadership of Aero Lodge No.735 of the International Association of Machinists and Aerospace Workers (“IAM”) agreed to negotiate a Memorandum of Agreement to sunset the retiree medical plans. Both the Company and the IAM leadership full endorsed this agreement, and local IAM members voted to ratify it on August 10, 2019.

21. SEGMENTS The Company reports financial performance based on the following two reportable segments: Systems & Support and Aerospace Structures. The Company’s reportable segments are aligned with how the business is managed, and the Company's views of the markets it serves. The Chief Operating Decision Maker (the "CODM") evaluates performance and allocates resources based upon review of segment information. The CODM utilizes earnings before interest, income taxes, depreciation and amortization, and pension (“Adjusted EBITDAP”) as a primary measure of segment profitability to evaluate performance of its segments and allocate resources. Segment Adjusted EBITDAP is total segment revenue reduced by operating expenses (less depreciation and amortization) identifiable with that segment. Corporate includes general corporate administrative costs and any other costs not identifiable with one of the Company’s segments, including loss on sale of assets and businesses of $104,702 for the year ended March 31, 2021. The Company does not accumulate net sales information by product or service or groups of similar products and services, and therefore the Company does not disclose net sales by product or service because to do so would be impracticable. Selected financial information for each reportable segment is as follows:

Year Ended March 31, 2021 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $ 1,869,719 $ — $ 1,056,822 $ 812,897 Intersegment sales (eliminated in consolidation) - (4,653) 3,179 1,474 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 173,197 - 155,693 17,504

Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (93,334) (3,459) (33,549) (56,326) Interest expense and other, net (171,397) Corporate expenses (51,104) Share-based compensation expense (12,701) Loss on sale of assets and businesses (104,702) Amortization of acquired contract liabilities 38,564 Non-service defined benefit income 49,519 Union represented employee incentives - Legal judgment gain, net - Impairment of rotable inventory (23,689) Impairment of long-lived assets (252,382) Income before income taxes (448,029)

Total capital expenditures $ 25,178 $ 1,030 $ 15,239 $ 8,909 Total assets $ 2,450,935 $ 536,003 $ 1,469,593 $ 445,339

Year Ended March 31, 2020 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $ 2,900,117 $ — $ 1,350,761 $ 1,549,356 Intersegment sales (eliminated in consolidation) — (13,334) 6,803 6,531 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 305,784 — 205,352 100,432

Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (138,168) (3,374) (32,376) (102,418) Interest expense and other, net (122,129) Corporate expenses (53,082) Share-based compensation expense (11,062) Loss on sale of assets and businesses (56,916) Amortization of acquired contract liabilities 75,286 Non-service defined benefit income 40,587 Union represented employee incentives (7,071) Legal judgment gain, net 9,257 Impairment of goodwill (66,121) Income before income taxes (23,635)

Total capital expenditures $ 39,834 $ 1,502 $ 17,141 $ 21,191 Total assets $ 2,980,333 $ 481,162 $ 1,478,679 $ 1,020,492

Year Ended March 31, 2019 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $ 3,364,930 $ — $ 1,309,474 $ 2,055,456 Intersegment sales (eliminated in consolidation) — (22,485) 15,537 6,948 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 215,418 — 202,346 13,072

Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (149,904) (3,100) (35,373) (111,431) Interest expense and other, net (114,619) Corporate expenses (74,706) Share-based compensation expense (10,259) Loss on sale of assets and businesses (235,301) Amortization of acquired contract liabilities 67,314 Non-service defined benefit income 56,726 Loss on adoption of ASU 2017-07 (87,241) Income before income taxes (332,572)

During fiscal years ended March 31, 2021, 2020, and 2019, the Company had foreign sales of $359,406, $724,193, and $960,299, respectively. The Company reports as foreign sales those sales with delivery points outside of the United States. As of March 31, 2021 and 2020, the Company had foreign long-lived assets of $213,919 and $205,243, respectively.

22. Subsequent Events As disclosed in Note 3, subsequent to March 31, 2021, we completed the sale of our manufacturing operations in Milledgeville, Georgia, Rayong, Thailand, and Red Oak, Texas, receiving net proceeds of approximately $155,000. We intend to use approximately $120,000 of the net proceeds to redeem approximately $112,500 aggregate principal amount of the First Lien Notes at a redemption price of 106.656%, plus accrued and unpaid interest. The redemption is required by the terms of the First Lien Notes, and following the redemption, approximately $587,500 aggregate principal amount of First Lien Notes will remain outstanding. We also expect that in the first quarter of fiscal 2022 we will use available cash to redeem all $236,471 aggregate principal outstanding amount of our 2022 Notes at a redemption price of 100.000%, plus accrued and unpaid interest. Subsequent to this redemption, we will have no material outstanding indebtedness maturing before 2024. In addition, as a result of the completed sale of these manufacturing operations, the Company expects to recognize a curtailment loss in the range of $10,000 to $20,000.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document TRIUMPH GROUP, INC. SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (in thousands)

Additions Balance at charged to beginning of (income) Balance at year expense Other (1) end of year For year ended March 31, 2021: Deferred tax assets valuation allowance $ 438,667 114,283 15,223 $ 568,173 For year ended March 31, 2020: Deferred tax assets valuation allowance $ 399,013 (3,474) 43,128 $ 438,667 For year ended March 31, 2019: Deferred tax assets valuation allowance $ 146,770 93,311 158,932 $ 399,013

(1) Adjustments relate to changes in defined benefit pension plan and other postretirement benefit plan obligations. The adjustment in the year ended March 31, 2019, also included an adjustment of approximately $132,000 as a result of the adoption of ASC 606.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. As of March 31, 2021, we completed an evaluation, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of the design and operation of our disclosure controls and procedures. Based on the foregoing, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of March 31, 2021.

The management of Triumph Group, Inc. ("Triumph") is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934. Triumph's internal control system over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. The Company's internal control over financial reporting includes those policies and procedures that: (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company's assets that could have a material effect on the financial statements. Because of inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to risk that controls may become inadequate because of changes in condition, or that the degree of compliance with the policies or procedures may deteriorate. Triumph's management assessed the effectiveness of Triumph's internal control over financial reporting as of March 31, 2021. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) ("COSO") in Internal Control—Integrated Framework. Based on management's assessment and those criteria, management believes that Triumph maintained effective internal control over financial reporting as of March 31, 2021. Triumph's independent registered public accounting firm, Ernst & Young LLP, has audited Triumph's effectiveness of internal control over financial reporting. This report appears on the following page.

/s/ Daniel J. Crowley Daniel J. Crowley Chairman, President, and Chief Executive Officer

/s/ James F. McCabe, Jr. James F. McCabe, Jr. Senior Vice President and Chief Financial Officer

/s/ Thomas A. Quigley, III Thomas A. Quigley, III Vice President and Controller

May 20, 2021

To the Board of Directors and Stockholders of Triumph Group, Inc.

Opinion on Internal Control Over Financial Reporting We have audited Triumph Group, Inc.’s internal control over financial reporting as of March 31, 2021, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the “COSO criteria”). In our opinion, Triumph Group, Inc. (the “Company”) maintained, in all material respects, effective internal control over financial reporting as of March 31, 2021, based on the COSO criteria. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) ("PCAOB"), the consolidated balance sheets of Triumph Group, Inc. as of March 31, 2021 and 2020, the related consolidated statements of operations, comprehensive loss, stockholders’ (deficit) equity and cash flows for each of the three years in the period ended March 31, 2021, and the related notes and financial statement schedule listed in the Index at Item 15(a) and our report dated May 20, 2021, expressed an unqualified opinion thereon.

Basis for Opinion The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Philadelphia, Pennsylvania May 20, 2021

In addition to management's evaluation of disclosure controls and procedures as discussed above, we continue to review and enhance our policies and procedures for internal control over financial reporting. We have developed and implemented a formal set of internal controls and procedures for financial reporting in accordance with the SEC's rules regarding management's report on internal controls. As a result of continued review and testing by management and by our internal and independent auditors, or as a result of newly adopted accounting standards, additional changes may be made to our internal controls and procedures. However, we did not make any changes to our internal control over financial reporting in the fourth quarter of fiscal 2020 that has materially affected or is reasonably likely to materially affect our internal control over financial reporting.

Item 9B. Other Information None.

Item 10. Directors, Executive Officers and Corporate Governance The information required for directors and executive officers is incorporated herein by reference to our definitive 2021 Proxy Statement for our 2021 Annual Meeting of Stockholders.

Delinquent Section 16(a) Reports The information required regarding Section 16(a) beneficial ownership reporting compliance is incorporated herein by reference to the 2021 Proxy Statement.

Code of Business Conduct The information required regarding our Code of Business Conduct is incorporated herein by reference to the 2021 Proxy Statement.

Stockholder Nominations The information required with respect to any material changes to the procedures by which stockholders may recommend nominees to the Company's board of directors is incorporated herein by reference to the 2021 Proxy Statement.

Audit Committee and Audit Committee Financial Expert The information required with respect to the Audit Committee and Audit Committee financial experts is incorporated herein by reference to the 2021 Proxy Statement.

Item 11. Executive Compensation The information required under this item is incorporated herein by reference to the 2021 Proxy Statement.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters The information required under this item is incorporated herein by reference to the 2021 Proxy Statement.

Item 13. Certain Relationships and Related Transactions and Director Independence The information required under this item is incorporated herein by reference to the 2021 Proxy Statement.

Item 14. Principal Accountant Fees and Services The information required under this item is incorporated herein by reference to the 2021 Proxy Statement.

Item 15. Exhibits, Financial Statement Schedules (a) Financial Statements (1) The following consolidated financial statements are included in Item 8 of this report:

Triumph Group, Inc. Page Consolidated Balance Sheets as of March 31, 2021 and 2020 45 Consolidated Statements of Operations for the Fiscal Years Ended March 31, 2021, 2020, and 2019 46 Consolidated Statements of Comprehensive Loss for the Fiscal Years Ended March 31, 2021, 2020, and 2019 47 Consolidated Statements of Stockholders' Equity (Deficit) for the Fiscal Years Ended March 31, 2021, 2020, and 2019 48 Consolidated Statements of Cash Flows for the Fiscal Years Ended March 31, 2021, 2020, and 2019 49 Notes to Consolidated Financial Statements 50 Report of Ernst & Young LLP, Independent Registered Public Accounting Firm 88

(2) The following financial statement schedule is included in this report:

Page Schedule II—Valuation and Qualifying Accounts 85

All other schedules have been omitted as not applicable or because the information is included elsewhere in the consolidated financial statements or notes thereto. (3) The following is a list of exhibits. Where so indicated, exhibits which were previously filed are incorporated by reference.

Exhibit Number Exhibit Description Incorporated by Reference to Form File No. Exhibit(s) Filing Date 3.1 Amended and Restated Certificate of Incorporation of 10-K 001-12235 3.1 May 22, 2009 Triumph Group, Inc. 3.2 Certificate of Amendment of Amended and Restated 8-K 001-12235 3.1 July 20, 2012 Certificate of Incorporation of Triumph Group, Inc. 3.3 Form of Certificate of Designations, Preferences and 8-K 001-12235 3.1 March 13, 2019 Rights of Series B Junior Participating Preferred Stock 3.4 Certificate of Amendment to Amended and Restated 8-K/A 001-12235 3.1 August 5, 2019 Certificate of Incorporation of Triumph Group, Inc. 3.5 Amended and Restated By-Laws of Triumph Group, Inc. 8-K 001-12235 3.1 April 26, 2019 4.1 Form of Certificate evidencing Common Stock of 8-K 001-12235 4.2 March 13, 2019 Triumph Group, Inc. 4.2 Indenture, dated as of February 26, 2013, between 8-K 001-12235 4.1 March 1, 2013 Triumph Group, Inc. and U.S. Bank National Association, as trustee 4.2.1 Form of 4.875% Senior Subordinated Notes due 8-K 001-12235 4.2 March 1, 2013 2021(included as Exhibit A to Exhibit 4.1) 4.3 Indenture, dated as of June 3, 2014, between Triumph 8-K 001-12235 4.1 June 5, 2014 Group, Inc. and U.S. Bank National Association, as trustee 4.3.1 Form of 5.250% Senior Notes due 2022 (included as 8-K 001-12235 4.2 June 5, 2014 Exhibit A to the Indenture filed as Exhibit 4.1) 4.4 Second Supplemental Indenture dated as of May 18, 10-K 001-12235 4.12 May 27, 2016 2016 by and among Triumph Group, Inc., the guarantors signatory thereto and U.S. Bank National Association, as trustee, relating to the 4.875% Senior Notes due 2021 4.5 Indenture, dated as of August 17, 2017, between 8-K 001-12235 4.1 August 18, 2017 Triumph Group, Inc. and U.S. Bank National Association, as trustee

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 4.6 Form of 7.750% Senior Notes due 2025 (included as 8-K 001-12235 4.2 August 18, 2017 Exhibit A to the Indenture filed as Exhibit 4.1). 4.7 Indenture, dated as of September 23, 2019, between 10-Q 001-12235 4.1 November 7, 2019 Triumph Group, Inc., the subsidiary guarantors signatory thereto and U.S. Bank National Association, as trustee. 4.8 Form of 6.250% Senior Secured Notes due 2024 10-Q 001-12235 4.1 November 7, 2019 (included as Exhibit A to the Indenture filed as Exhibit 4.1). 4.9 Tax Benefits Preservation Plan, dated as of March 13, 8-K 001-12235 4.1 March 13, 2019 2019, between Triumph Group, Inc. and Computershare Trust Company, N.A.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit Number Exhibit Description Incorporated by Reference to Form File No. Exhibit(s) Filing Date 4.10 Description of Securities 10-K 001-12235 4.8 May 23, 2019 4.11 Indenture, dated as of August 17, 2020, among Triumph 8-K 001-12235 4.1 August 18, 2020 Group, Inc., the subsidiary guarantors signatory thereto and U.S. Bank National Association, as trustee for the Notes. 4.12 Form of 8.875% Senior Secured First Lien Notes due 8-K 001-12235 4.2 August 18, 2020 2024. 4.13 Twenty-Sixth Amendment dated August 17, 2020 8-K 001-12235 4.3 August 18, 2020 among Triumph Receivables, LLC as seller, Triumph Group, Inc. as servicer, and PNC Bank, National Association, as a related committed purchaser, purchaser agent, and administrator. 4.14 Fourth Amendment to Performance Guaranty, dated 8-K 001-12235 4.4 August 18, 2020 August 17, 2020 among Triumph Group, Inc. as performance guarantor, and PNC Bank, National Association, as purchaser agent, and administrator. 4.15 Amended and Restated Receivables Purchase 8-K 001-12235 4.1 October 5, 2020 Agreement, dated as of September 29, 2020, among Triumph Receivables, LLC, as seller, Triumph Group, Inc., as servicer, the various purchasers, LC participants and purchaser agents from time to time party thereto, PNC Bank, National Association, as administrator and as LC bank and PNC Capital Markets LLC, as structuring agent. 4.16 Amended and Restated Purchase and Sale Agreement, 8-K 001-12235 4.2 October 5, 2020 dated as of September 29, 2020, among various entities listed therein, as the originators, Triumph Group, Inc., individually and as servicer and Triumph Receivables, LLC. 4.17 Amended and Restated Performance Guaranty, dated 8-K 001-12235 4.3 October 5, 2020 as of September 29, 2020, by Triumph Group, Inc. in favor of PNC Bank, National Association, as administrator. 10.1 Amended and Restated Directors’ Stock Incentive Plan 10-K 001-12235 10.1 May 29, 2012 10.1.1 Form of Deferred Stock Unit Award Agreement under 10-K 001-12235 10.2 May 30, 2013 the Amended and Restated Directors’ Stock Incentive Plan 10.2 Triumph Group, Inc. 2004 Stock Incentive Plan* 10-K 001-12235 10.3 May 30, 2013 10.2.1 Form of Stock Award Agreement under the 2004 Stock 10-K 001-12235 10.7 May 22, 2009 Incentive Plan* 10.2.2 Form of letter confirming Stock Award Agreement under 10-K 001-12235 10.8 May 22, 2009 the 2004 Stock Incentive Plan* 10.3 Triumph Group, Inc. Supplemental Executive 10-K 001-12235 10.17 June 12, 2003 Retirement Plan effective January 1, 2003* 10.4 Compensation for the non-employee members of the 8-K 001-12235 10.1 November 15, 2016 Board of Directors of Triumph Group, Inc. 10.6 Form of Receivables Purchase Agreement, dated 8-K 001-12235 10.1 August 12, 2008 August 7, 2008, by and among the Triumph Group, Inc., as Initial Servicer, Triumph Receivables, LLC, as Seller, the various Purchasers and Purchase Agents from time to time party thereto and PNC National Association, as Administrative Agent.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 10.7 Third Amendment to Receivables Purchase Agreement, 8-K 001-12235 10.1 June 25, 2010 dated as of June 21, 2010, by and among Triumph Receivables LLC, Triumph Group, Inc., Market Street Funding LLC and PNC Bank, National Association 10.8 Triumph Group, Inc. Executive Incentive Plan, effective 10-Q 001-12235 10.1 November 5, 2010 September 28, 2010 * 10.9 Form of letter informing Triumph Group, Inc. executives 10-K 001-12235 10.22 May 18, 2011 they are eligible to participate in the Company’s Long Term Incentive Plan * 10.10 Form of letter informing Triumph Group, Inc. executives 10-K 001-12235 10.23 May 18, 2011 they have earned an award under the Company’s Long Term Incentive Plan and the amount of the award *

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit Number Exhibit Description Incorporated by Reference to Form File No. Exhibit(s) Filing Date 10.11 Sixth Amendment to Receivables Purchase Agreement, 8-K 001-12235 10.1 March 1, 2013 dated as of February 26, 2013, by and among Triumph Receivables LLC, Triumph Group, Inc., Market Street Funding LLC and PNC Bank, National Association 10.12 Form of Third Amended and Restated Credit 8-K 001-12235 10.1 November 25, 2013 Agreement, dated as of November 19, 2013, by and among Triumph Group, Inc., and the other Borrowers party thereto and the Guarantors party thereto and the Banks party thereto and PNC Bank, National Association, as Administrative Agent, PNC Capital Markets LLC, J.P. Morgan Securities, LLC, RBC Capital Markets, RBS Citizens, N.A., and Santander Bank, N.A., as Joint Lead Arrangers and Joint Bookrunners, JPMorgan Chase Bank N.A., Royal Bank of Canada, Citizens Bank of Pennsylvania, and Santander Bank, N.A., as Syndication Agents, the Bank of Tokyo- Mitsubishi UFJ, Ltd, U.S. Bank National Association, TD Bank, N.A., and Manufacturers and Traders Trust Company, as Documentation Agents 10.13 Form of Second Amended and Restated Guarantee and 8-K 001-12235 10.2 November 25, 2013 Collateral Agreement made by Triumph Group, Inc., and certain of its Subsidiaries in favor of PNC Bank, National Association, as Administrative Agent and as Collateral Agent for the other Secured Parties identified herein, dated as of November 19, 2013 10.14 Triumph Group, Inc. 2013 Equity and Cash Incentive 8-K 001-12235 99.1 June 12, 2017 Plan, as amended and restated as of June 7, 2017* 10.15 Form of letter regarding eligibility to participate in the 10-K 001-12235 10.24 May 19, 2014 Triumph Group, Inc. Restricted Stock Plan* 10.16 Tenth Amendment to Receivables Purchase Agreement 8-K 001-12235 10.1 November 26, 2014 dated as of November 25, 2014 10.17 Third Amendment to Third Amended and Restated 10-Q 001-12235 10.1 February 9, 2015 Credit Agreement, dated as of February 3, 2015, by and among Triumph Group, Inc. and the other Borrowers party thereto and the Guarantors party thereto and the Banks party thereto and PNC Bank, National Association, as Administrative Agent 10.18 The First Amendment of the Triumph Group, Inc. 8-K 001-12235 10.1 May 7, 2015 Supplemental Executive Retirement Plan, effective as of May 1, 2015 * 10.19 First Amendment to Triumph Group, Inc. 2013 10-Q 001-12235 10.1 August 4, 2015 Employee Stock Purchase Plan * 10.20 Employment Agreement between Triumph Group, Inc. 8-K 001-12235 10.1 April 7, 2016 and Daniel J. Crowley, dated as of April 1, 2016* 10.21 Form of Sixth Amendment to Third Amended and 8-K 001-12235 10.1 May 4, 2016 Restated Credit Agreement, dated May 3, 2016 10.22 Employment letter between Triumph Group, Inc. and 8-K 001-12235 10.1 July 27, 2016 James F. McCabe dated July 26, 2016 * 10.23 Form of Seventh Amendment to Third Amended and 10-Q 001-12235 10.1 November 9, 2016 Restated Credit Agreement, dated October 21, 2016 10.24 Triumph Group, Inc. Directors' Deferred Compensation 8-K 001-12235 10.2 November 15, 2016 Plan, effective January 1, 2017

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 10.25 Eighth Amendment to the Third Amended and Restated 8-K 001-12235 10.1 May 10, 2017 Credit Agreement, dated May 1, 2017 10.26 Form of the 2016 Directors' Equity Compensation Plan, 10-K/A 001-12235 10.34 May 26, 2017 as amended 10.27 Form of Restricted Stock Unit Agreement under the 10-K/A 001-12235 10.35 May 26, 2017 2016 Directors' Equity Compensation Plan, as amended 10.28 Triumph Group, Inc. Directors' Deferred Compensation 8-K 001-12235 10.2 November 15, 2016 Plan, effective January 1, 2017

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit Number Exhibit Description Incorporated by Reference to Form File No. Exhibit(s) Filing Date 10.29 Twentieth Amendment to Receivables Purchase 8-K 001-12235 10.1 November 7, 2017 Agreement dated as of November 3, 2017 10.30 Ninth Amendment to the Third Amended and Restated 10-Q 001-12235 10.1 November 8, 2017 Credit Agreement, dated July 31, 2017 10.31 Employment Letter between Triumph Group, Inc. and 10-Q 001-12235 10.1 February 7, 2018 Peter Wick dated January 20, 2018 * 10.32 Triumph Group, Inc. 2018 Equity Incentive Plan, 8-K 001-12235 10.1 June 4, 2018 effective May 29, 2018* 10.32.1Amendment to Triumph Group, Inc. 2018 Equity 10-K 001-12235 10.32.1 May 23, 2019 Incentive Plan, effective February 19, 2018* 10.32.2Form of Long-Term Incentive Award Letter under the 10-K 001-12235 10.32.2 May 23, 2019 2018 Equity Incentive Plan* 10.33 Triumph Group, Inc. 2018 Executive Cash Incentive 8-K 001-12235 10.2 June 4, 2018 Compensation Plan, effective April 1, 2018* 10.33.1Form of Short-Term Cash Incentive Award Letter under 10-K 001-12235 10.33.1 May 23, 2019 the 2018 Executive Cash Incentive Compensation Plan* 10.34 Tenth Amendment to the Third Amended and Restated 8-K 001-12235 10.1 July 20, 2018 Credit Agreement, dated July 19, 2018 10.35 Separation Agreement Triumph Group, Inc. and John B. 8-K/A 001-12235 10.1 January 25, 2019 Wright, dated January 7, 2019* 10.36 Separation Agreement Triumph Group, Inc. and Michael 8-K/A 001-12235 10.2 January 25, 2019 Abram, dated January 7, 2019* 10.37 Separation Agreement between Triumph Group, Inc. 8-K/A 001-12235 10.1 February 22, 2019 and Thomas Holzthum, dated February 15, 2019* 10.38 Employment Letter between Triumph Group, Inc. and 10-K 001-12235 10.33.1 May 23, 2019 Lance Turner, dated September 5, 2017* 10.39 Employment Letter between Triumph Group, Inc. and 10-K 001-12235 10.33.1 May 23, 2019 Daniel Ostrosky, dated March 25, 2015, with Addendum dated April 10, 2015* 10.40 Triumph Group, Inc. Executive General Severance 10-K 001-12235 10.40 May 23, 2019 Plan, effective February 19, 2019* 10.41 Triumph Group, Inc. Executive Change in Control 10-K 001-12235 10.41 May 23, 2019 Severance Plan, effective February 19, 2019* 10.42 Eleventh Amendment to the Third Amended and 10-Q 001-12235 10.1 November 7, 2019 Restated Credit Agreement, dated September 23, 2019 10.43 Twelfth Amendment to the Third Amended and 10-K 001-12235 10.43 May 28, 2020 Restated Credit Agreement, dated May 22, 2020 10.44 Twenty-Fifth Amendment to the Receivables Purchase 8-K 001-12235 10.1 December 9, 2019 Agreement dated as of December 6, 2019 (Incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on December 9, 2019) 10.45 Employment Letter between Triumph Group, Inc. and 10-K 001-12235 10.45 May 28, 2020 Jennifer Allen, dated August 14, 2018 10.46 Amendment No. 1 to Triumph Group, Inc. Executive 10-Q 001-12235 10.2 August 5, 2020 Change In Control Severance Plan.* 10.47 Amendment No. 2 to Triumph Group, Inc. Executive 10-Q 001-12235 10.3 August 5, 2020 Change In Control Severance Plan.* 10.48 Intercreditor Agreement, dated August 17, 2020 8-K 001-12235 10.1 August 18, 2020 between Wilmington Trust, National Association, as collateral trustee, and U.S. Bank National Association, as second lien collateral agent for the 2024 Notes. 10.49 Collateral Trust Agreement, dated August 17, 2020 8-K 001-12235 10.2 August 18, 2020 among the Company, the subsidiary guarantors

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document signatory thereto, Wilmington Trust, National Association, as collateral trustee, and U.S. Bank National Association, as trustee for the Notes. 10.50 Employment Agreement between Triumph Group, Inc. 8-K 001-12235 10.1 November 18, 2020 and Daniel J. Crowley, dated as of November 17, 2020.*

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit Number Exhibit Description Incorporated by Reference to Form File No. Exhibit(s) Filing Date 10.51 Separation Agreement effective as of April 11, 2021, 8-K 001-12235 10.1 April 13, 2021 between Triumph Group, Inc. and Daniel J. Ostrosky.* 18.1 Preferability Letter from Ernst & Young LLP, 10-Q 001-12235 18.1 November 5, 2020 Independent Registered Public Accounting Firm, Regarding Change in Accounting Principle. 21.1 Subsidiaries of Triumph Group, Inc. # # # # 22.1 List of Subsidiary Guarantors and Issuers of # # # # Guaranteed Securities. 23.1 Consent of Ernst & Young LLP, Independent Registered # # # # Public Accounting Firm 31.1 Principal Executive Officer Certification Required by # # # # Rule 13a-14(a) or Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended. 31.2 Principal Financial Officer Certification Required by Rule # # # # 13a-14(a) or Rule 15d-14(a) under the Securities Exchange Act of 1934, as amended. 32.1 Principal Executive Officer Certification Required by ## ## ## ## Rule 13a-14(b) or Rule 15d-14(b) under the Securities Exchange Act of 1934, as amended, and 18 U.S.C. Section 1350. 32.2 Principal Financial Officer Certification Required by Rule ## ## ## ## 13a-14(b) or Rule 15d-14(b) under the Securities Exchange Act of 1934, as amended, and 18 U.S.C. Section 1350. 99.1 Revisions to Triumph Group, Inc.’s Annual Report on 8-K 001-12235 99.1 December 17, 2020 Form 10-K for the fiscal year ended March 31, 2020. 99.2 Revisions to Triumph Group, Inc.’s Quarterly Report on 8-K 001-12235 99.2 December 17, 2020 Form 10-Q for the quarterly period ended June 30, 2020: 99.3 Temporary Hardship Exemption. 8-K 001-12235 99.3 December 17, 2020 101 The following financial information from Triumph Group, # # # # Inc.’s Annual Report on Form 10-K for the fiscal year ended March 31, 2021 formatted in iXBRL: (i) Consolidated Balance Sheets as of March 31, 2021 and 2020; (ii) Consolidated Statements of Operations for the fiscal years ended March 31, 2021, 2020, and 2019; (iii) Consolidated Statements of Stockholders’ Equity (Deficit) for the fiscal years ended March 31, 2021, 2020, and 2019; (iv) Consolidated Statements of Cash Flows for the fiscal years ended March 31, 2021, 2020, and 2019; (v) Consolidated Statements of Comprehensive Loss for the fiscal years ended March 31, 2021, 2020, and 2019; and (vi) Notes to the Consolidated Financial Statements 104 Cover Page Interactive Data File, formatted in iXBRL # # # # and contained in Exhibit 101.

In accordance with Item 601(b)(4)(iii)(A) of Regulations S-K, copies of specific instruments defining the rights of holders of long-term debt of the Company or its subsidiaries are not filed herewith. Pursuant to this regulation, we hereby agree to furnish a copy of any such instrument to the SEC upon request * Indicates management contract or compensatory plan or arrangement # Filed herewith ## Furnished herewith

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed by the undersigned, thereunto duly authorized.

TRIUMPH GROUP, INC.

/s/ Daniel J. Crowley Dated: May 20, 2021 By: Daniel J. Crowley Chairman, President, Chief Executive Officer and Director (Principal Executive Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

Chairman, President, Chief Executive Officer and May 20, 2021 Director /s/ Daniel J. Crowley (Principal Executive Officer) Daniel J. Crowley

Senior Vice President and Chief Financial Officer May 20, 2021 /s/ James F. McCabe, Jr. (Principal Financial Officer) James F. McCabe, Jr.

Vice President, Investor Relations and Controller May 20, 2021 /s/ Thomas A. Quigley III (Principal Accounting Officer) Thomas A. Quigley III

/s/ Ralph E. Eberhart Lead Independent Director May 20, 2021 Ralph E. Eberhart

/s/ Paul Bourgon Director May 20, 2021 Paul Bourgon

/s/ Daniel P. Garton Director May 20, 2021 Daniel P. Garton

/s/ Richard Goglia Director May 20, 2021 Richard Goglia

/s/ Barbara Humpton Director May 20, 2021 Barbara Humpton

/s/ William L. Mansfield Director May 20, 2021 William L. Mansfield

/s/ Colleen C. Repplier Director May 20, 2021 Colleen C. Repplier

/s/ Larry O. Spencer Director May 20, 2021 Larry O. Spencer

Subsidiaries of Triumph Group, Inc. HT Parts, L.L.C. Nu-Tech Brands, Inc. Placas Termodinamicas, S. de R.L. de C.V. SBP Holdings Limited The Mexmil Holding Company, LLC The Triumph Group Operations, Inc. Triumph Accessory Services - Grand Prairie, Inc. Triumph Actuation Systems - Connecticut, LLC Triumph Actuation Systems - Isle of Man, Ltd. Triumph Actuation Systems - UK, Ltd. Triumph Actuation Systems - Valencia, Inc. Triumph Actuation Systems - Yakima, LLC Triumph Actuation Systems, LLC Triumph Aerospace Operations UK, Ltd. Triumph Aerospace Systems Group - UK LTD Triumph Aerospace Systems Group, LLC Triumph Aerospace Operations Japan, GK Triumph Aerostructures - Tulsa, LLC Triumph Aerostructures Holdings, LLC Triumph Aerostructures Real Estate Investment Co., LLC Triumph Aerostructures Vought Aircraft Technical Services (Chengdu) Co., Ltd. Triumph Aerostructures, LLC Triumph Aftermarket Services Group, LLC Triumph Airborne Structures, LLC Triumph Aviation Services Asia, Ltd. Triumph Aviations Inc. Triumph Brands, Inc. Triumph Composite Systems, Inc. Triumph Controls (Europe) SAS Triumph Controls - Germany GmbH Triumph Controls - UK Ltd. Triumph Controls France SAS Triumph Controls, LLC Triumph Engine Control Holdings, Inc. Triumph Engine Control Systems, LLC Triumph Engineered Solutions, Inc. Triumph Engineering Services, Inc. Triumph Fabrications - Orangeburg, Inc. Triumph Gear Systems - Macomb, Inc. Triumph Gear Systems - Toronto ULC Triumph Gear Systems, Inc. Triumph Group - Mexico Inmobiliaria, S. de R.L. de C.V. Triumph Group - Mexico, S. de R.L. de C.V. Triumph Group Acquisition Corp. Triumph Group Acquisition Financing, LLC Triumph Group Acquisition Holdings, Inc.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Triumph Group Charitable Foundation Triumph Group Holdings - Mexico, LLC Triumph Group Holdings - UK, Ltd. Triumph Group Investment - Mexico, LLC Triumph Group Investments LLC

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Triumph Group Luxembourg Finance S.a.r.l. Triumph Group Luxembourg Holding S.a.r.l. Triumph Instruments - Burbank, Inc. Triumph Instruments, Inc. Triumph Insulation Systems - Germany GmbH Triumph Insulation Systems, LLC Triumph Integrated Aircraft Interiors Inmobiliaria, S. de R.L. de C.V. Triumph Integrated Aircraft Interiors, Inc. Triumph Investment Holdings, Inc. Triumph Metals Company Triumph Precision Castings Co. Triumph Real Estate - Mexico, LLC Triumph Receivables, LLC Triumph Structures (Thailand) Ltd. Triumph Structures - Kansas City, Inc. Triumph Structures - Wichita, Inc. Triumph Structures International, Ltd Triumph Thermal Systems - Maryland, Inc. Triumph Thermal Systems, LLC Triumph Turbine Services, Inc. VAC Industries, Inc.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit 22.1 The following subsidiaries of Triumph Group, Inc. are Subsidiary Guarantors with respect to the Senior Notes:

Guarantor Jurisdiction HT PARTS, L.L.C. Delaware NU-TECH BRANDS, INC. Delaware THE TRIUMPH GROUP OPERATIONS, INC. Delaware TRIUMPH ACCESSORY SERVICES - GRAND PRAIRIE, INC. Delaware TRIUMPH ACTUATION SYSTEMS - CONNECTICUT, LLC Delaware TRIUMPH ACTUATION SYSTEMS - VALENCIA, INC. Delaware TRIUMPH ACTUATION SYSTEMS - YAKIMA, LLC Delaware TRIUMPH ACTUATION SYSTEMS, LLC Delaware TRIUMPH AEROSPACE SYSTEMS GROUP, LLC Delaware TRIUMPH AEROSTRUCTURES - TULSA, LLC Delaware TRIUMPH AEROSTRUCTURES HOLDINGS, LLC Delaware TRIUMPH AEROSTRUCTURES, LLC Delaware TRIUMPH AEROSTUCTURES REAL ESTATE INVESTMENT CO., LLC Delaware TRIUMPH AFTERMARKET SERVICES GROUP, LLC Delaware TRIUMPH AIRBORNE STRUCTURES, LLC Arkansas TRIUMPH AVIATIONS INC. Arkansas TRIUMPH BRANDS, INC. Delaware TRIUMPH COMPOSITE SYSTEMS, INC. Delaware TRIUMPH CONTROLS, LLC Delaware TRIUMPH ENGINE CONTROL HOLDINGS, INC. Delaware TRIUMPH ENGINE CONTROL SYSTEMS, LLC Delaware TRIUMPH ENGINEERED SOLUTIONS, INC. Delaware TRIUMPH ENGINEERING SERVICES, INC. Delaware TRIUMPH FABRICATIONS - ORANGEBURG, INC. Illinois TRIUMPH GEAR SYSTEMS - MACOMB, INC. Michigan TRIUMPH GEAR SYSTEMS, INC. Delaware TRIUMPH GROUP ACQUISITION CORP. Delaware TRIUMPH GROUP ACQUISITION HOLDINGS, INC. Delaware TRIUMPH INSTRUMENTS – BURBANK, INC. Delaware TRIUMPH INSULATION SYSTEMS, LLC Nevada TRIUMPH INTEGRATED AIRCRAFT INTERIORS, INC. Delaware TRIUMPH INVESTMENT HOLDINGS, INC. Nevada TRIUMPH STRUCTURES - KANSAS CITY, INC. Missouri TRIUMPH STRUCTURES - WICHITA, INC. Delaware TRIUMPH THERMAL SYSTEMS - MARYLAND, INC. Delaware TRIUMPH THERMAL SYSTEMS, LLC Delaware TRIUMPH TURBINE SERVICES, INC. Delaware VAC INDUSTRIES, INC. Delaware

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

1) Registration Statements (Form S-8 No. 333-36957 and Form S-8 No. 333-50056) pertaining to the 1996 Stock Option Plan of Triumph Group, Inc.,

2) Registration Statements (Form S-8 No. 333-81665 and Form S-8 No. 333-134861) pertaining to the Amended and Restated Directors’ Stock Incentive Plan of Triumph Group, Inc.,

3) Registration Statement (Form S-8 No. 333-125888) pertaining to the 2004 Stock Incentive Plan of Triumph Group, Inc.,

4) Registration Statement (Form S-8 No. 333-192537) pertaining to the 2013 Employee Stock Purchase Plan of Triumph Group, Inc.,

5) Registration Statement (Form S-8 No. 333-192538) pertaining to the 2013 Equity and Cash Incentive Plan of Triumph Group, Inc.,

6) Registration Statement (Form S-8 No. 333-211676) pertaining to the Time-Based Restricted Stock Award Agreement of Triumph Group, Inc.,

7) Registration Statement (Form S-8 No. 333-219486) pertaining to the 2016 Directors’ Equity Compensation Plan of Triumph Group, Inc.,

8) Registration Statement (Form S-8 No. 333-226640) pertaining to the 2018 Equity Incentive Plan,

9) Registration Statement (Form S-8 No. 333-249980) pertaining to the Amended and Restated 2018 Equity Incentive Plan,

10) Registration Statement (Form S-3 No. 333-235454) pertaining to the resale of certain shares of common stock by Vought Industries Inc., Master Defined Benefit Trust,

11) Registration Statement (Form S-3 No. 333-239-098) pertaining to the offer and sale of securities up to a proposed aggregate offering price of $600,000,000 of Triumph Group, Inc., and

12) Registration Statement (Form S-3 No. 333-251429) pertaining to the offer and sale of an indeterminate aggregate amount of securities of Triumph Group, Inc. of our reports dated May 20, 2021, with respect to the consolidated financial statements and schedule of Triumph Group, Inc. and the effectiveness of internal control over financial reporting of Triumph Group, Inc. included in this Annual Report (Form 10-K) of Triumph Group, Inc. for the year ended March 31, 2021.

/s/ Ernst & Young, LLP

Philadelphia, Pennsylvania May 20, 2021

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit 31.1 CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a) OF THE SECURITIES AND EXCHANGE ACT OF 1934

I, Daniel J. Crowley, certify that: 1. I have reviewed this Annual Report on Form 10-K of Triumph Group, Inc. (this "Report"); 2. Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report; 3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report; 4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared; b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this Report based on such evaluation; and d) disclosed in this Report any change in the registrant's internal control over financial reporting that occurred during the registrant's fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and 5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: May 20, 2021

/s/ Daniel J. Crowley Daniel J. Crowley Chairman, President and Chief Executive Officer (Principal Executive Officer)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit 31.2 CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a) OF THE SECURITIES AND EXCHANGE ACT OF 1934

I, James F. McCabe, Jr., certify that: 1. I have reviewed this Annual Report on Form 10-K of Triumph Group, Inc. (this "Report"); 2. Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report; 3. Based on my knowledge, the financial statements, and other financial information included in this Report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report; 4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared; b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this Report based on such evaluation; and d) disclosed in this Report any change in the registrant's internal control over financial reporting that occurred during the registrant's fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and 5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions): a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated: May 20, 2021

/s/ James F. McCabe, Jr. James F. McCabe, Jr. Senior Vice President, Chief Financial Officer (Principal Financial Officer)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit 32.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Triumph Group, Inc. (the "Company") for the year ended March 31, 2021, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Daniel J. Crowley, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By: /s/ Daniel J. Crowley Daniel J. Crowley Chairman, President and Chief Executive Officer (Principal Executive Officer) May 20, 2021 ______A signed original of this written statement required by Section 906 has been provided to Triumph Group, Inc. and will be retained by Triumph Group, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Exhibit 32.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Triumph Group, Inc. (the "Company") for the year ended March 31, 2021, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, James F. McCabe, Jr., Senior Vice President, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes- Oxley Act of 2002, to the best of my knowledge, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By: /s/ James F. McCabe, Jr. James F. McCabe, Jr. Senior Vice President, Chief Financial Officer (Principal Financial Officer) May 20, 2021 ______A signed original of this written statement required by Section 906 has been provided to Triumph Group, Inc. and will be retained by Triumph Group, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Document and Entity Sep. Information - USD ($) May 17, Mar. 31, 2021 30, $ in Millions 2021 2020 Document Information [Line Items] Document Period End Date Mar. 31, 2021 Entity Registrant Name Triumph Group, Inc. Entity Central Index Key 0001021162 Document Type 10-K Amendment Flag false Current Fiscal Year End Date --03-31 Entity Well-known Seasoned Yes Issuer Entity Voluntary Filers No Entity Filer Category Accelerated Filer Entity Public Float $ 336 Entity Common Stock, Shares 64,220,262 Outstanding Document Fiscal Year Focus 2021 Document Fiscal Period Focus FY Entity Current Reporting Yes Status Entity Interactive Data Current Yes Entity Emerging Growth false Company Entity Small Business false Entity Shell Company false ICFR Auditor Attestation Flag true Entity Incorporation, State or DE Country Code Entity Tax Identification 51-0347963 Number Entity File Number 1-12235 Entity Address, Address Line 899 Cassatt Road One Entity Address, Address Line Suite 210 Two Entity Address, City or Town Berwyn Entity Address, State or PA Province Entity Address, Postal Zip 19312 Code City Area Code 610 Local Phone Number 251-1000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Document Annual Report true Document Transition Report false Documents Incorporated by Portions of the following document are incorporated herein by reference: Reference The Proxy Statement of Triumph Group, Inc. to be filed in connection with our 2021 Annual Meeting of Stockholders is incorporated in part in Part III hereof, as specified herein. Common Stock [Member] Document Information [Line Items] Title of 12(b) Security Common Stock, par value $.001 per share Trading Symbol TGI Security Exchange Name NYSE Purchase Rights [Member] Document Information [Line Items] Title of 12(b) Security Purchase rights No Trading Symbol Flag true Security Exchange Name NYSE

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Balance Sheets Mar. 31, Mar. 31, - USD ($) 2021 2020 $ in Thousands Current assets: Cash and cash equivalents $ 589,882 $ 485,463 Trade and other receivables, less allowance for credit losses of $8,095 and $4,293 194,066 359,487 Contract assets 134,638 244,417 Inventory, net 400,366 452,976 Prepaid expenses and other current assets 19,206 19,289 Assets held for sale 216,276 Total current assets 1,554,434 1,561,632 Property and equipment, net 211,369 418,141 Goodwill 521,638 513,527 Intangible assets, net 102,453 381,968 Other, net 61,041 105,065 Total assets 2,450,935 2,980,333 Current liabilities: Current portion of long-term debt 5,247 7,336 Accounts payable 179,473 457,694 Contract liabilities 204,379 295,320 Accrued expenses 271,160 227,403 Liabilities related to assets held for sale 58,108 Total current liabilities 718,367 987,753 Long-term debt, less current portion 1,952,296 1,800,171 Accrued pension and other postretirement benefits 384,256 660,065 Deferred income taxes 7,491 7,439 Other noncurrent liabilities 207,378 306,169 Stockholders' deficit: Common stock, $.001 par value, 100,000,000 shares authorized, 64,488,674 and 64 52 52,460,920 shares issued; 64,185,001 and 51,858,089 shares outstanding Capital in excess of par value 978,272 804,830 Treasury stock, at cost, 303,673 and 602,831 shares (12,606) (36,217) Accumulated other comprehensive loss (530,192) (746,448) Accumulated deficit (1,254,391)(803,481) Total stockholders' deficit (818,853) (781,264) Total liabilities and stockholders' deficit $ $ 2,450,935 2,980,333

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Balance Sheets (Parenthetical) - USD ($) Mar. 31, 2021Mar. 31, 2020 $ in Thousands Statement Of Financial Position [Abstract] Allowance for credit losses $ 8,095 $ 4,293 Common stock, par value $ 0.001 $ 0.001 Common stock, shares authorized 100,000,000 100,000,000 Common stock, shares issued 64,488,674 52,460,920 Common stock, shares outstanding 64,185,001 51,858,089 Treasury stock, shares 303,673 602,831

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 12 Months Ended Operations - USD ($) shares in Thousands, $ in Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 Thousands Income Statement [Abstract] Net sales $ 1,869,719 $ 2,900,117 $ 3,364,930 Operating costs and expenses: Cost of sales (exclusive of depreciation shown separately below) 1,476,266 2,307,393 2,924,920 Selling, general and administrative 215,962 257,529 298,386 Depreciation and amortization 93,334 138,168 149,904 Legal judgment gain, net of expenses (9,257) Impairment of long-lived assets 252,382 Impairment of goodwill 66,121 Restructuring 53,224 25,340 31,098 Loss on sale of assets and businesses 104,702 56,916 235,301 Operating Expenses 2,195,870 2,842,210 3,639,609 Operating (loss) income (326,151) 57,907 (274,679) Non-service defined benefit income (49,519) (40,587) (56,726) Interest expense and other, net 171,397 122,129 114,619 Loss from continuing operations before income taxes (448,029) (23,635) (332,572) Income tax expense (benefit) 2,881 5,798 (5,426) Net loss $ (450,910) $ (29,433) $ (327,146) Loss per share—basic: Net loss $ (8.55) $ (0.58) $ (6.58) Weighted average common shares outstanding—basic 52,739 50,494 49,698 Loss per share—diluted: Net loss $ (8.55) $ (0.58) $ (6.58) Weighted average common shares outstanding—diluted 52,739 50,494 49,698

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 12 Months Ended Comprehensive Loss - USD Mar. 31, Mar. 31, Mar. 31, ($) 2021 2020 2019 $ in Thousands Statement Of Income And Comprehensive Income [Abstract] Net loss $ $ $ (29,433) (450,910) (327,146) Other comprehensive income (loss): Foreign currency translation adjustment 19,884 (13,439) 10,077 Amounts arising during the period - net of tax (expense) benefit Prior service credit (cost), net of taxes of $0, $0, and $0, respectively 94,182 (1,139) Actuarial gain (loss), net of taxes of $0, $0, and $0, respectively 168,701 (303,017) (120,161) Reclassification to net loss - net of expense (benefit) Amortization of net loss, net of taxes of $0, $0, and $(656), respectively 26,483 49,290 6,314 Recognized prior service credits, net of taxes of $0, $0, and $0, respectively (4,130) (54,280) (8,274) Total defined benefit pension plans and other postretirement benefits, net of 191,054 (213,825) (123,260) taxes Cash flow hedges: Unrealized gain (loss) arising during the period, net of tax benefit of $0, $0, 5,891 (1,611) 30 and $(228), respectively Reclassification of loss included in net earnings, net of tax expense of $0, $0, (573) (1,562) (1,282) and $228, respectively Net unrealized gain (loss) on cash flow hedges, net of tax 5,318 (3,173) (1,252) Total other comprehensive income (loss) 216,256 (230,437) (114,435) Total comprehensive loss $ $ $ (234,654) (259,870) (441,581)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 12 Months Ended Comprehensive Loss Mar. Mar. Mar. (Parenthetical) - USD ($) 31, 31, 31, $ in Thousands 2021 2020 2019 Statement Of Income And Comprehensive Income [Abstract] Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Credit (Cost), $ 0 $ 0 $ 0 Tax Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, 0 0 0 Net Unamortized Gain (Loss) Arising During the Period, Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension 0 0 (656) and Other Postretirement Benefit Plans, for Net (Gain) Loss, Tax Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension 0 0 0 and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising 0 0 (228) During Period, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on $ 0 $ 0 $ 228 Derivatives, Tax

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Retained Earnings Cumulative Retained (Accumulated Consolidated Statements of Capital in Accumulated Effect, Common Treasury Earnings Deficit) Stockholders' Equity Excess of Other Total Period of Stock Stock (Accumulated [Member] (Deficit) - USD ($) Par Value Comprehensive Adoption, [Member] [Member] Deficit) Cumulative $ in Thousands [Member] Loss [Member] Adjustment [Member] Effect, Period of Adoption, Adjustment Balance at Mar. 31, 2018 $ $ 450,534 $ (585,015) $ 51 $ 851,280 $ (401,576) $ 179,861 $ (585,015) (179,082) Balance (in shares) at Mar. 31, 49,669,848 2018 Net loss $ (327,146) (327,146) Accounting Standards Update ASC 606 [Member] Extensible List Foreign currency translation $ 10,077 10,077 adjustment Pension liability adjustment, (123,260) (123,260) net of income taxes Change in fair value of foreign currency hedges, net of (1,252) (1,252) income taxes Cash dividends ($0.16 per (7,971) (7,971) share) Share-based compensation 10,259 (1,448) 11,707 Share-based compensation, 186,572 shares Repurchase of restricted shares (860) (860) for minimum tax obligation Repurchase of restricted shares for minimum tax obligation, (42,146) shares Employee stock purchase plan 1,321 (3,354) 4,675 Employee stock purchase plan, 72,994 shares Other $ 1 21,067 4,406 (25,474) Balance at Mar. 31, 2019 (573,313) $ (225) $ 52 867,545 (159,154) (516,011) (765,745) $ (225) Balance (in shares) at Mar. 31, 49,887,268 2019 Net loss $ (29,433) (29,433) Accounting Standards Update us- Extensible List gaap:AccountingStandardsUpdate201602Member Foreign currency translation $ (13,439) (13,439) adjustment Pension liability adjustment, (213,825) (213,825) net of income taxes Change in fair value of foreign currency hedges, net of (3,173) (3,173) income taxes Cash dividends ($0.16 per (8,078) (8,078) share) Share-based compensation 10,714 (5,508) 16,222 Share-based compensation, 264,658 shares Repurchase of restricted shares (1,442) (1,442) for minimum tax obligation Repurchase of restricted shares for minimum tax obligation, (69,601) shares Employee stock purchase plan 950 (1,811) 2,761 Employee stock purchase plan, 45,061 shares Contribution of treasury shares 1,730,703 to pension plan, shares Contribution of treasury shares 50,000 (55,396) 105,396 to pension plan Balance at Mar. 31, 2020 (781,264) $ 52 804,830 (36,217) (746,448) (803,481) Balance (in shares) at Mar. 31, 51,858,089 2020 Net loss (450,910) (450,910)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Foreign currency translation 19,884 19,884 adjustment Pension liability adjustment, 191,054 191,054 net of income taxes Change in fair value of foreign currency hedges, net of 5,318 5,318 income taxes Share-based compensation 12,445 (6,250) 18,695 Share-based compensation, 288,350 shares Repurchase of restricted shares (1,285) (1,285) for minimum tax obligation Repurchase of restricted shares for minimum tax obligation, (99,082) shares Employee stock purchase plan 857 (5,344) 6,201 Employee stock purchase plan, 109,890 shares Contribution of common stock to pension plan, net of 39,665 $ 3 39,662 issuance costs Contribution of common stock to pension plan, net of 2,849,002 issuance costs, shares Issuance of common stock - at the market offering, net of 145,383 $ 9 145,374 issuance costs Issuance of common stock at the market offering, net of 9,178,752 issuance costs, shares Balance at Mar. 31, 2021 $ (818,853) $ 64 $ 978,272 $ (12,606) $ (530,192) $ (1,254,391) Balance (in shares) at Mar. 31, 64,185,001 2021

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 12 Months Ended Stockholders' Equity (Deficit) (Parenthetical) - Mar. 31, Mar. 31, Mar. 31, USD ($) 2021 2020 2019 $ in Thousands Statement Of Stockholders Equity Parenthetical [Abstract] Other comprehensive (income) loss, defined benefit plan, after $ 0 $ (656) $ (288) reclassification adjustment, tax Other comprehensive income (loss), tax $ 0 $ 228 $ 11 Dividends declared and paid per common share (in dollars per share) $ 0.16 $ 0.16

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Consolidated Statements of 12 Months Ended Cash Flows - USD ($) Mar. 31, Mar. 31, Mar. 31, $ in Thousands 2021 2020 2019 Operating Activities Net loss $ $ $ (29,433) (450,910) (327,146) Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Depreciation and amortization 93,334 138,168 149,904 Impairment of long-lived assets and goodwill 252,382 66,121 Amortization of acquired contract liability (38,564) (75,286) (67,314) Loss on sale of assets and businesses 104,702 56,916 235,301 Curtailments and special termination benefits gain, net 14,293 4,032 Other amortization included in interest expense 23,759 11,157 8,770 Provision for (recovery of) credit losses 4,853 1,554 (495) (Benefit) provision for deferred income taxes (176) 2,823 (7,939) Share-based compensation 12,701 11,062 10,259 Changes in other assets and liabilities, excluding the effects of acquisitions and divestitures: Trade and other receivables 126,294 5,001 (89,728) Contract assets 46,841 50,440 65,191 Inventories 35,412 (48,802) (15,930) Prepaid expenses and other current assets (310) 16,376 (3,144) Accounts payable, accrued expenses, and contract liabilities (330,992) (61,338) (71,767) Accrued pension and other postretirement benefits (51,692) (66,519) (74,532) Other, net (753) 4,133 10,118 Net cash (used in) provided by operating activities (173,119) 96,666 (174,420) Investing Activities Capital expenditures (25,178) (39,834) (47,099) Proceeds from sale of assets and businesses 15,888 47,229 247,647 Net cash (used in) provided by investing activities (9,290) 7,395 200,548 Financing Activities Net (decrease) increase in revolving credit facility (400,000) 185,000 102,113 Proceeds from issuance of long-term debt 713,900 585,580 54,600 Retirement of debt and finance lease obligations (160,035) (449,650) (113,425) Payment of deferred financing costs (20,716) (17,718) (1,982) Sales of common stock, net of issuance costs 145,383 Dividends paid (8,078) (7,971) Repurchase of restricted shares for minimum tax obligations (1,285) (1,442) (860) Net cash provided by financing activities 277,247 293,692 32,475 Effect of exchange rate changes on cash 9,581 (5,097) (1,615) Net change in cash and cash equivalents 104,419 392,656 56,988 Cash and cash equivalents at beginning of period 485,463 92,807 35,819 Cash and cash equivalents at end of period $ 589,882 $ 485,463 $ 92,807

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Background and Basis of 12 Months Ended Presentation Mar. 31, 2021 Organization Consolidation And Presentation Of Financial Statements [Abstract] Background and Basis of Presentation 1. BACKGROUND AND BASIS OF PRESENTATION Triumph Group, Inc. ("Triumph") is a Delaware corporation which, through its operating subsidiaries, designs, engineers, manufactures and sells products for the global aerospace OEMs of aircraft and aircraft components and repairs and overhauls aircraft components and accessories for commercial airline, air cargo carrier and military customers on a worldwide basis. Triumph and its subsidiaries (collectively, the "Company") are organized based on the products and services that they provide. The Company has two reportable segments: Systems & Support and Aerospace Structures. Systems & Support consists of the Company’s operations that provide integrated solutions, including design, development, and support of proprietary components, subsystems and systems, as well as production of complex assemblies using external designs. Capabilities include hydraulic, mechanical and electromechanical actuation, power and control; a complete suite of aerospace gearbox solutions, including engine accessory gearboxes and helicopter transmissions; active and passive heat exchange technology; fuel pumps, fuel metering units and Full Authority Digital Electronic Control fuel systems; hydromechanical and electromechanical primary and secondary flight controls. Systems & Support also provides full life cycle solutions for commercial, regional and military aircraft. The Company’s extensive product and service offerings include full post-delivery value chain services that simplify the MRO supply chain. Through its ground support equipment maintenance, component MRO and postproduction supply chain activities, Systems & Support is positioned to provide integrated planeside repair solutions globally. Capabilities include metallic and composite aircraft structures; nacelles; thrust reversers; interiors; auxiliary power units; and a wide variety of pneumatic, hydraulic, fuel and mechanical accessories. Repair services generally involve the replacement and/or remanufacturing of parts, which is similar to the original manufacture of the part. The processes that the Company performs related to repair and overhaul services are essentially the repair of wear parts or replacement of parts that are beyond economic repair. The repair service generally involves remanufacturing a complete part or a component of a part. Aerospace Structures consists of the Company’s operations that supply commercial, business, regional and military manufacturers with large metallic and composite structures and aircraft interior systems, including air ducting and thermal acoustic insulations systems. Products include wings, wing boxes, fuselage panels, horizontal and vertical tails, subassemblies such as floor grids, and aircraft interior systems, including air ducting and thermal acoustic insulations systems. Aerospace Structures also has the capability to engineer detailed structural designs in metal and composites. Capabilities include advanced composite and interior structures, joining processes such as welding, autoclave bonding, and conventional mechanical fasteners. The accompanying consolidated financial statements include the accounts of Triumph and its wholly-owned subsidiaries. Intercompany accounts and transactions have been eliminated from the consolidated financial statements. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Standards Recently Implemented Adoption of ASU 2016-13 In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU modifies the measurement of expected credit losses of certain financial instruments. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The amendments in this ASU should be applied on a modified retrospective basis to all periods presented. The Company adopted ASU 2016-13 effective April 1, 2020, and the impact on its consolidated financial statements was not significant. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements by removing, modifying or adding certain disclosures. ASU 2018-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The Company adopted ASU 2018-13 effective April 1, 2020, and the adoption did not have a significant impact on its consolidated financial statement disclosures. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans, which modifies the annual disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for annual periods ending after December 15, 2020, with early adoption permitted. The amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company adopted ASU 2018-14 effective April 1, 2020, and the adoption did not have a significant impact on its consolidated financial statement disclosures.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document rates. Refer to Note 15 for the Company’s fair value disclosure by asset classification. The Company’s previous method of accounting was to calculate the MRVA for all the Plan’s assets recognizing investment gains and losses into the MRVA over a five-year period. The Company has changed its method of accounting and elected to use the fair value of its fixed income assets, which represent approximately 44% of the Plan’s assets as of the effective date of the change in accounting principle, to determine the MRVA. This change in accounting principle is preferable as it results in an expected return on asset component of net periodic benefit income that more accurately reflects the changes in the fair values of the fixed income securities. No change is being made to the accounting principle for the other classes of pension assets, which represent the remaining 56% of the pension asset portfolio for the Plan. The gains and losses for these other plan assets will continue to be amortized into the MRVA over a five-year period. The change in accounting principle requires retrospective application and prospective disclosure. The Company applied the change effective April 1, 2020, and recorded a cumulative adjustment to equity as of the earliest period presented. The tables below represent the impact of this change on the consolidated statements of operations (including earnings per share) and the consolidated statements of comprehensive loss for the periods presented below. The change in accounting principle had no impact on the consolidated statements of cash flows for these periods. The tables below represent the impact of the change in accounting principle on the consolidated statement of operations and the consolidated statements of comprehensive loss for the year ended March 31, 2021.

Year Ended March 31, 2021 As Reported (With Impact of Without Change) Change Change Non-service defined benefit income $ (49,519)$ (6,112)$ (43,407) Loss before income taxes (448,029) 6,112 (454,141) Income tax expense 2,881 - 2,881 Net loss $ (450,910)$ 6,112 $ (457,022)

Net Loss per share - basic & diluted Basic $ (8.55)$ 0.12 $ (8.67) Diluted $ (8.55)$ 0.12 $ (8.67)

The table below represents the impact of the change in accounting principle on the consolidated balance sheet as of March 31, 2021.

Without As Reported (With Change, Change), Impact of March 31, Stockholders' deficit: March 31, 2021 Change 2021 Accumulated other comprehensive loss $ (530,192)$ (33,132) (497,060) Accumulated deficit $ (1,254,391)$ 33,132 (1,287,523) Total stockholders' deficit $ (818,853)$ - (818,853)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 12 Months Ended Accounting Policies Mar. 31, 2021 Accounting Policies [Abstract] Summary of Significant 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounting Policies Cash and Cash Equivalents Cash equivalents consist of highly liquid investments with a maturity of three months or less at the time of purchase. Fair value of cash equivalents approximates carrying value.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document exceed the amount of recorded goodwill. The determination of the fair value of its reporting units is based, among other things, on estimates of future operating performance of the reporting unit being valued. The Company is required to complete an impairment test for goodwill and record any resulting impairment losses at least annually. Changes in market conditions, among other factors, may have an impact on these estimates and require interim impairment assessments. When performing the quantitative impairment test, the Company's methodology includes the use of an income approach which discounts future net cash flows to their present value at a rate that reflects the Company's cost of capital, otherwise known as the discounted cash flow method ("DCF"). These estimated fair values are based on estimates of future cash flows of the businesses. Factors affecting these future cash flows include the continued market acceptance of the products and services offered by the businesses, the development of new products and services by the businesses and the underlying cost of development, the future cost structure of the businesses and future technological changes. The Company also incorporates market multiples for comparable companies in determining the fair value of its reporting units. Any such impairment would be recognized in full in the reporting period in which it has been identified. The fair value estimates resulting from the application of these methodologies are based on inputs classified within Level 3 of the fair value hierarchy, as described below. During the fourth quarter of the fiscal year ended March 31, 2021, the Company performed its annual goodwill impairment assessment for each of its reporting units with no impairment identified. In fiscal 2020, at March 31, 2020, the Company identified indicators of impairment due to the decline in the Company’s share price as well as potential negative impacts due to the uncertainty of the impact of the COVID-19 pandemic. As a result of these indicators, the Company performed an interim assessment of goodwill, which included using a combination of both market and income approaches to estimate the fair value of each reporting unit. The Company concluded that its Product Support reporting unit had a fair value that was lower than its carrying value by an amount that exceeded the remaining goodwill for the reporting unit. Therefore, the Company recorded a noncash impairment charge during the fiscal quarter ended March 31, 2020, of $66,121, which is presented on the consolidated statements of operations as “Impairment of goodwill” for the fiscal year ended March 31, 2020. The decline in fair value was the result of expected declines in revenues from MRO services and the uncertainty in the rate and timing of recovery and therefore the timing of associated earnings and cash flows. Finite-lived intangible assets are amortized over their useful lives ranging from 7 to 30 years. The Company continually evaluates whether events or circumstances have occurred that would indicate that the remaining estimated useful lives of long-lived assets, including intangible assets, may warrant revision or that the remaining balance may not be recoverable. Long-lived assets are evaluated for indicators of impairment. When factors indicate that long-lived assets, including intangible assets, should be evaluated for possible impairment, an estimate of the related undiscounted cash flows over the remaining life of the long-lived assets, including intangible assets, is used to measure recoverability based on the primary asset of the asset group. Some of the more important factors management considers include the Company's financial performance relative to expected and historical performance, significant changes in the way the Company manages its operations, negative events that have occurred, and negative industry and economic trends. If the estimated undiscounted cash flows are less than the carrying amount, measurement of the impairment will be based on the difference between the carrying value and fair value of the asset group, generally determined based on the present value of expected future cash flows associated with the use of the asset. As disclosed in Note 3, in May 2020, the Company’s Board of Directors committed to a plan (i) to sell its composites manufacturing operations located in Milledgeville, Georgia,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document and Rayong, Thailand, and (ii) to transfer the assets and certain liabilities associated with its Gulfstream G650 wing supply chain activities (as disclosed in Note 3, this transaction closed in August 2020). These planned divestitures represent the divestiture of certain assets and liabilities of an operating business within the Aerospace Structures segment that the Company has identified as an asset group pursuant to the provisions of ASC 360, Property, Plant, and Equipment. As a result, as of May 31, 2020, the Company concluded that the planned divestitures represented a significant change in the manner in which the related asset group was expected to be used, and that the asset group therefore needed to be tested for recoverability. The asset group primarily consists of working capital, fixed assets and definite-lived intangible assets. The Company first determined that the relevant long-lived asset group was not recoverable by comparing the undiscounted cash flows expected to be generated by the long-lived asset group to the carrying value of the asset group. As a result, the Company estimated the fair value of the long-lived asset group and concluded that the asset group was impaired. The Company used a multi-period excess earnings approach to estimate the fair value of the long-lived asset group for purposes of testing the asset group for impairment. This method estimates fair value based on the expected future excess earnings stream attributable to the asset group. This method requires the use of several key assumptions, including revenue projections that consider historical and estimated future results, general economic and market conditions, as well as the impact of planned business and operational strategies. A discount rate of 15.0% was applied to the estimated future excess earnings and cash flows in order to estimate the fair value of the asset group as of the measurement date. The Company has determined that the lowest level of the inputs that are significant to the fair value measurement are unobservable inputs that fall within Level 3 of the fair value hierarchy. In accordance with ASC 360, the Company allocated the resulting impairment to the specific long-lived assets within the asset group on a pro rata basis, except that the loss allocated to an individual long-lived asset of the group did not reduce the carrying amount of that asset below its estimated fair value. As a result, the Company recognized a total noncash impairment charge of $252,382 in the first quarter, primarily allocated to definite-lived intangible assets, which is presented as “Impairment of long- lived assets” on the accompanying consolidated statements of operations. In January 2021, the Company’s Board of Directors committed to a plan to sell its manufacturing operations located in Red Oak, Texas. As a result of this decision and the resulting classification of this disposal group as held for sale, the Company fully impaired the remaining customer relationship intangible asset within the Aerospace Structures segment and recognized a noncash impairment charge of $6,696, which has been included in the impairment on the assets held for sale as disclosed in Note 3 and is presented within “Loss on sale of assets and businesses” on the accompanying consolidated statement of operations. See below for the Company's accounting policy regarding fair value measurements and the definition of fair value levels.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The identification of a contract with a customer for purposes of accounting and financial reporting requires an evaluation of the terms and conditions of agreements to determine whether presently enforceable rights and obligations exist. Management considers a number of factors when making this evaluation that include, but are not limited to, the nature and substance of the business exchange, the specific contractual terms and conditions, the promised products and services, the termination provisions in the contract, as well as the nature and execution of the customer’s ordering process and how the Company is authorized to perform work. Generally, presently enforceable rights and obligations are not created until a purchase order is issued by a customer for a specified number of units of product or services. Therefore, the issuance of a purchase order is generally the point at which a contract is identified for accounting and financial reporting purposes. Management identifies the promises to the customer. Promises are generally explicitly stated in each contract, but management also evaluates whether any promises are implied based on the terms of the agreement, past business practice, or other facts and circumstances. Each promise is evaluated to determine if it is a performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service. The Company considers a number of factors when determining whether a promise is a distinct performance obligation, including whether the customer can benefit from the good or service on its own or together with other resources that are readily available to the customer, whether the Company provides a significant service of integrating goods or services to deliver a combined output to the customer, or whether the goods or services are highly interdependent. The Company’s performance obligations consist of a wide range of engineering design services and manufactured components, as well as spare parts and repairs for OEMs. The transaction price for a contract reflects the consideration the Company expects to receive for fully satisfying the performance obligations in the contract. Typically, the transaction price consists solely of fixed consideration but may include variable consideration for contractual provisions such as unpriced contract modifications, cost- sharing provisions, and other receipts or payments to customers. The Company identifies and estimates variable consideration, typically at the most likely amount the Company expects to receive from its customers. Variable consideration is only included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized for the contract will not occur, or when the uncertainty associated with the variable consideration is resolved. The Company's contracts with customers generally require payment under normal commercial terms after delivery with payment typically required within 30 to 120 days of delivery. However, a subset of the Company’s current contracts includes significant financing components because the timing of the transfer of the underlying products and services under contract are at the customers’ discretion. For these contracts, the Company adjusts the transaction price to reflect the effects of the time value of money. The Company generally is not subject to collecting sales tax and has made an accounting policy election to exclude from the transaction price any sales and other similar taxes collected from customers. As a result, any such collections are accounted for on a net basis. The total transaction price is allocated to each of the identified performance obligations using the relative stand-alone selling price. The objective of the allocation is to reflect the consideration that the Company expects to receive in exchange for the products or services associated with each performance obligation. Stand-alone selling price is the price at which the Company would sell a promised good or service separately to a customer. Stand-alone selling prices are established at contract inception, and subsequent changes in transaction price are allocated on the same basis as at contract inception. When stand-alone selling prices for the Company’s products and services are not observable, the Company uses either the “Expected Cost Plus a Margin” or "Adjusted Market Assessment" approaches to estimate stand-alone selling price. Expected costs are typically derived from the available periodic forecast information.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue is recognized when or as control of promised products or services transfers to a customer and is recognized at the amount allocated to each performance obligation associated with the transferred products or services. Service sales, principally representing repair, maintenance, and engineering activities are recognized over the contractual period or as services are rendered. Sales under long-term contracts with performance obligations satisfied over time are recognized using either an input or output method. The Company recognizes revenue over time as it performs on these contracts because of the continuous transfer of control to the customer as represented by contractual terms that entitle the Company to the reimbursement of costs plus a reasonable profit for work performed to manufacture products for which the Company has no alternate use or for work performed on a customer-owned asset. With control transferring over time, revenue is recognized based on the extent of progress toward completion of the performance obligation. The Company generally uses the cost-to-cost input method of progress for its contracts because it best depicts the transfer of control to the customer that occurs as work progresses. Under the cost-to- cost method, the extent of progress toward completion is measured based on the proportion of costs incurred to date to the total estimated costs at completion of the performance obligation. The Company reviews its cost estimates on contracts on a periodic basis, or when circumstances change and warrant a modification to a previous estimate. Cost estimates are largely based on negotiated or estimated purchase contract terms, historical performance trends and other economic projections. Significant factors that influence these estimates include inflationary trends, technical and schedule risk, internal and subcontractor performance trends, business volume assumptions, asset utilization, and anticipated labor agreements. Revenue and cost estimates are regularly monitored and revised based on changes in circumstances. Impacts from changes in estimates of net sales and cost of sales are recognized on a cumulative catch-up basis, which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a performance obligation’s percentage of completion. Forward loss reserves for anticipated losses on long-term contracts are recorded in full when such losses become evident, to the extent required and are included in contract liabilities on the accompanying consolidated balance sheets. The Company believes that the accounting estimates and assumptions made by management are appropriate given the increased uncertainties surrounding the severity and duration of the impacts of the COVID-19 pandemic, however actual results could differ materially from those estimates. For the fiscal year ended March 31, 2021, cumulative catch-up adjustments resulting from changes in contract values and estimated costs that arose during the fiscal year increased revenue and decreased operating loss, net loss, and loss per share by approximately $4,796, $12,332, $12,332, and $0.23, respectively. The cumulative catch- up adjustments to operating income for the fiscal year ended March 31, 2021, included gross favorable adjustments of approximately $55,180 and gross unfavorable adjustments of approximately $42,848. For the fiscal year ended March 31, 2020, cumulative catch-up adjustments resulting from changes in estimates increased net sales, operating loss, net loss and loss per share by approximately $12,011, ($22,844), ($22,844), and ($0.45), respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2020, included gross favorable adjustments of approximately $43,405 and gross unfavorable adjustments of approximately $66,249. For the fiscal year ended March 31, 2019, cumulative catch-up adjustments resulting from changes in estimates decreased operating loss, net loss and decreased loss per share by approximately ($68,694), ($68,694), and ($1.38), respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2019, included gross favorable adjustments of approximately $46,074 and gross unfavorable adjustments of approximately $114,768. These cumulative catch-up adjustments do not include a noncash charge the Company recorded as a result of the adoption of ASU 2017-07 of $87,241 due to a change in estimate from a change in accounting principles,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document which is presented on the accompanying consolidated statements of operations within cost of sales. Revenues for performance obligations that are not recognized over time are recognized at the point in time when control transfers to the customer. For performance obligations that are satisfied at a point in time, the Company evaluates the point in time when the customer can direct the use of and obtain the benefits from the products and services. Generally, the shipping terms determine the point in time when control transfers to customers. Shipping and handling activities are not considered performance obligations and related costs are included in cost of sales as incurred. Differences in the timing of revenue recognition and contractual billing and payment terms result in the recognition contract assets and liabilities. Refer to Note 4 for further discussion. In connection with several of prior acquisitions, the Company assumed existing long- term contracts. Based on review of these contracts at the acquisition date, the Company concluded that the terms of certain contracts were either more or less favorable than could be realized in market transactions as of the date of the acquisition. As a result, the Company recognized acquired contract liabilities, net of acquired contract assets as of the acquisition date of each respective acquisition, based on the present value of the difference between the contractual cash flows of the executory contracts and the estimated cash flows had the contracts been executed at the acquisition date. The liabilities principally relate to long-term contracts that were initially executed several years prior to the respective acquisition. The Company measured these net liabilities in the year they were acquired under the measurement provisions of ASC 820, Fair Value Measurement, which is based on the price to transfer the obligation to a market participant at the measurement date, assuming that the net liabilities will remain outstanding in the marketplace. The portion of the Company's revenue resulting from transactions other than contracts with customers pertains to the amortization of these acquired contract liabilities as the related contractual performance obligations are satisfied. Adjustments to these liabilities due to significant changes in the total estimated costs of the contract are accounted for in a manner consistent with other loss contract reserves, with such adjustments recognized in cost of sales. The balance of the liability as of March 31, 2021, is $43,888 and, based on the expected delivery schedule of the underlying contracts, the Company estimates annual amortization of the liability as follows: 2022 — $22,897; 2023 — $3,347; 2024 — $2,501; 2025 — $2,564; 2026 — $1,282; thereafter $11,296.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document estimated incremental borrowing rate is derived from information available at the lease commencement date. The lease ROU asset recognized at commencement is adjusted for any lease payments related to initial direct costs, prepayments, and lease incentives. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, lease expense comprises the amortization of the ROU assets recognized on a straight-line basis generally over the shorter of the lease term or the estimated useful life of the underlying asset and interest on the lease liability. Variable lease payments not dependent on a rate or index are recognized when the event, activity, or circumstance in the lease agreement upon which those payments are contingent is probable of occurring and are presented in the same line of the consolidated balance sheet as the rent expense arising from fixed payments. The Company has lease agreements with lease and non-lease components. Non-lease components are combined with the related lease components and accounted for as lease components for all classes of underlying assets.

Retirement Benefits Defined benefit pension plans are recognized in the consolidated financial statements on an actuarial basis. A significant element in determining the Company's pension income (expense) is the expected long-term rate of return on plan assets. This expected return is an assumption as to the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the projected pension benefit obligation. The Company applies this assumed long-term rate of return to a calculated value of plan assets, which recognizes changes in the fair value of plan assets in a systematic manner over five years. This produces the expected return on plan assets that is included in pension income (expense). The difference between this expected return and the actual return on plan assets is deferred. The net deferral of past asset gains (losses) affects the calculated value of plan assets and, ultimately, future pension income (expense). The Company periodically experiences events or makes changes to its benefit plans that result in curtailment or special charges. Curtailments are recognized when events occur that significantly reduce the expected years of future service of present employees or eliminates the benefits for a significant number of employees for some or all of their future service. Curtailment losses are recognized when it is probable the curtailment will occur and the effects are reasonably estimable. Curtailment gains are recognized when the related employees are terminated or a plan amendment is adopted, whichever is applicable. From time to time, the Company may enter into transactions that relieve it of primary responsibility for all or more than a minor portion of certain of its pension benefit obligations. When these transactions are effected through an irrevocable action that relieves the Company of primary responsibility for its pension or other postretirement benefit obligations and eliminates significant risks related to the obligation and the related assets used to effect the transaction, they are considered settlements, as defined by ASC 715, Compensation – Retirement Benefits. When a transaction meets the definition of a settlement, at the time of settlement the Company recognizes as a gain or loss the pro rata amount of the net gain or loss in accumulated other comprehensive income based on the proportion of the projected benefit obligation settled to the total projected benefit obligation. As required under ASC 715, the Company remeasures plan assets and obligations during an interim period whenever a significant event occurs that results in a material change in the net periodic pension cost. The determination of significance is based on judgment and consideration of events and circumstances impacting the pension costs. At March 31 of each year, the Company determines the fair value of its pension plan assets as well as the discount rate to be used to calculate the present value of plan liabilities. The discount rate is an estimate of the interest rate at which the pension

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document benefits could be effectively settled. In estimating the discount rate, the Company looks to rates of return on high-quality, fixed-income investments currently available and expected to be available during the period to maturity of the pension benefits. The Company uses a portfolio of fixed-income securities, which receive at least the second- highest rating given by a recognized ratings agency.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Divested Operations and 12 Months Ended Assets Held For Sale Mar. 31, 2021 Discontinued Operations And Disposal Groups [Abstract] Divested Operations and 3. DIVESTED OPERATIONS AND ASSETS HELD FOR SALE Assets Held For Sale Assets Held for Sale In May 2020, the Company’s Board of Directors committed to a plan to sell its composites manufacturing operations located in Milledgeville, Georgia and Rayong, Thailand. In August 2020, the Company entered into a definitive agreement with the buyer of the composites manufacturing operations in Georgia and Thailand. In February 2021, the Company entered into a definitive agreement to sell its manufacturing operations in Red Oak, Texas, to the same buyer of the Milledgeville and Rayong composites manufacturing operations. These transactions closed in May 2021. In the year ended March 31, 2021, the Company adjusted the carrying amount of its assets held for sale to its estimated fair value less cost to sell and recognized a loss $102,493 due to decreases in actual and expected performance of certain widebody programs within the disposal group that affected this estimate. The impairment is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. To measure the amount of the impairment, the Company compared the carrying value of the assets and liabilities of the disposal group with their estimated fair value less cost to sell as of the balance sheet date. The estimate of fair value is categorized as Level 2 within the fair value hierarchy. The key assumptions used in the estimate of fair value is the negotiated sales price of the assets and the assumption of the disposal group’s liabilities. As of March 31, 2021, the operating results of these related operations are included within the Aerospace Structures reportable segment, and the related assets and liabilities are classified as held for sale on the accompanying consolidating balance sheets. Fiscal 2021 Divestitures In August 2020, the Company completed the transfer of the assets and certain liabilities associated with its Gulfstream G650 wing supply chain activities for cash proceeds net of transaction costs of approximately $51,000. This transaction also resulted in the derecognition of approximately $18,157 in accrued warranties related to these activities. The Company recognized a loss of approximately $819, which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. The operating results associated with the G650 wing supply chain activities were included within Aerospace Structures through the date of transfer.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document resulted in accelerated recognition of previously unrecognized actuarial losses. The Company completed the transfer of the defined benefit pension assets and obligations in March 2020 and recognized a one-time settlement loss of approximately $28,000. In September 2019, the Company completed the assignment of its E-2 Jets contract with Embraer for the manufacture of structural components for their program to AeroSpace Technologies of Korea Inc. ("ASTK"). As part of this transaction, the Company transferred certain assets and liabilities to ASTK and recognized a gain of approximately $10,000, which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. The assets and liabilities transferred were included within Aerospace Structures through the date of divestiture.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and 12 Months Ended Contracts with Customers Mar. 31, 2021 Change In Contract With Customer Asset And Liability [Abstract] Revenue Recognition and 4. REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS Contracts with Customers Disaggregation of Revenue The Company disaggregates revenue based on the method of measuring satisfaction of the performance obligation either over time or at a point in time. Additionally, the Company disaggregates revenue based upon the end market where products and services are transferred to the customer. The Company’s principal operating segments and related revenue are discussed in Note 21, Segments. The following table shows disaggregated net sales satisfied overtime and at a point in time (excluding intercompany sales) for the years ended March 31, 2021 and 2020:

The following table shows disaggregated net sales by end market (excluding intercompany sales) for the years ended March 31, 2021 and 2020:

Aerospace Structures Commercial aerospace $ 481,845 $ 879,690 Military 137,466 116,846

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Business jets 158,156 422,681 Regional 11,558 89,318 Non-aviation 370 21 Revenue from contracts with customers 789,395 1,508,556 Amortization of acquired contract liabilities 23,502 40,800 Total revenue 812,897 1,549,356 $ 1,869,719 $ 2,900,117

March 31, March 31, 2021 2020 Change Contract assets $ 139,937 $ 267,079 $ (127,142) Contract liabilities (305,116) (386,585) 81,469 Net contract liability $ (165,179) $ (119,506) $ (45,673)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document contract assets associated with the Gulfstream G650 wing supply chain transfer as well as the reclassification of approximately $76,821 of contract assets as held for sale on the accompanying consolidated balance sheet as of March 31, 2021. These decreases were partially offset by revenue recognized in excess of amounts billed during the year ended March 31, 2021. The change in contract liabilities is the result of revenue recognized in excess of the receipt of additional customer advances during the period as well as the reclassification of approximately $7,562 of contract liabilities as held for sale on the accompanying consolidated balance sheet as of March 31, 2021. For the period ended March 31, 2021, the Company recognized $78,725 of revenue that was included in the contract liability balance at the beginning of the period. Noncurrent contract assets presented in other, net on the accompanying consolidated balance sheets as of March 31, 2021 and 2020, were $5,299 and $22,662, respectively. Noncurrent contract liabilities presented in other noncurrent liabilities on the accompanying consolidated balance sheets as of March 31, 2021 and 2020, were $100,737 and $91,265, respectively.

Performance Obligations Customers generally contract with the Company for requirements in a segment relating to a specific program, and the Company’s performance obligations consist of a wide range of engineering design services and manufactured components, as well as spare parts and repairs for OEMs. A single contract may contain multiple performance obligations consisting of both recurring and nonrecurring elements. As of March 31, 2021, the Company has the following unsatisfied, or partially unsatisfied, performance obligations that are expected to be recognized in the future as noted in the table below. The Company expects options to be exercised in addition to the amounts presented below.

More Less than than 5 Total 1 year 1-3 years 4-5 years years Unsatisfied performance obligations $2,273,527 $1,251,209 $961,332 $60,889 $ 97

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Inventories Mar. 31, 2021 Inventory Disclosure [Abstract] Inventories 5. INVENTORIES The Company records inventories at the lower of cost (average-cost or specific- identification methods) or market. The Company expenses general and administrative costs related to products and services provided essentially under commercial terms and conditions as incurred. The Company determines the costs of inventories sold by the first-in, first-out or average cost methods. The components of inventories are as follows:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Property and Equipment Mar. 31, 2021 Property Plant And Equipment [Abstract] Property and Equipment 6. PROPERTY AND EQUIPMENT Property and equipment, which include equipment under finance lease and leasehold improvements, are recorded at cost and depreciated over the estimated useful lives of the related assets, or the lease term if shorter in the case of leasehold improvements, using the straight-line method. Buildings and improvements are depreciated over a period of 15 to 39.5 years, and machinery and equipment are depreciated over a period of 7 to 15 years (except for furniture, fixtures and computer equipment, which are depreciated over a period of 3 to 10 years). Net property and equipment is:

Depreciation expense for the fiscal years ended March 31, 2021, 2020, and 2019, was $71,651, $89,857 and $97,323, respectively, which includes depreciation of assets under finance lease.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Goodwill and Other 12 Months Ended Intangible Assets Mar. 31, 2021 Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Other Intangible Assets 7. GOODWILL AND OTHER INTANGIBLE ASSETS The following is a summary of the changes in the carrying value of goodwill by reportable segment, for the fiscal years ended March 31, 2021 and 2020:

Systems & Support March 31, 2020 $513,527 Effect of exchange rate changes 8,111 March 31, 2021 $521,638

Systems & Support March 31, 2019 $583,225 Effect of exchange rate changes (3,577) Impairment of goodwill (66,121) March 31, 2020 $513,527

Intangible Assets The components of intangible assets, net are as follows:

March 31, 2020 Weighted- Average Life Gross Carrying Accumulated (in Years) Amount Amortization Net Customer relationships 17.7 $ 550,131 $ (276,980) $273,151 Product rights, technology and licenses 11.4 54,676 (46,180) 8,496 Noncompete agreements and other 16.7 2,656 (1,208) 1,448 Tradenames 10.0 150,000 (51,127) 98,873 Total intangibles, net $ 757,463 $ (375,495) $381,968

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Amortization expense for the fiscal years ended March 31, 2021, 2020, and 2019, was $22,551, $48,311, and $52,581, respectively. Amortization expense for the five fiscal years succeeding March 31, 2021, by year is expected to be as follows: 2022: $11,846; 2023: $11,846; 2024: $11,846; 2025: $11,846; 2026: $11,432, and thereafter: $43,639.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Accrued Expenses Mar. 31, 2021 Accrued Liabilities Current And Noncurrent [Abstract] Accrued Expenses 8. ACCRUED EXPENSES Accrued expenses consist of the following items:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Leases Mar. 31, 2021 Leases [Abstract] Leases 9. LEASES The components of lease expense for the year ended March 31, 2021, are disclosed in the table below.

Year Ended March 31, Financial Statement Lease Cost Classification 2021 2020 Operating lease cost Cost of sales or Selling, general and administrative expense $ 22,976 $ 24,539 Variable lease cost Cost of sales or Selling, general and administrative expense 9,344 8,382 Financing Lease Cost: Amortization of right-of-use Depreciation and assets amortization 4,673 5,317 Interest on lease liability Interest expense and other 1,580 2,307 Total lease cost (1) $ 38,573 $ 40,545

Supplemental balance sheet information related to leases as of March 31, 2021 and 2020, is disclosed in the table below.

March 31, Leases Classification 2021 2020 Assets Operating lease ROU assets Other, net Assets held for sale $ 46,643 $ 61,461

Finance lease ROU assets, Property and equipment, cost net Assets held for sale 44,128 39,461 Accumulated amortization Property and equipment, net Assets held for sale (23,344) (18,650)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Finance lease ROU assets, net 20,784 20,811 Total lease assets $ 67,427 $ 82,272

Liabilities Current Operating Accrued expenses Liabilities related to assets held for sale $ 12,885 $ 13,139 Finance Current portion of long- term debt Liabilities related to assets held for sale 5,972 7,336 Noncurrent Operating Other noncurrent liabilities Liabilities related to assets held for sale 42,385 54,687 Finance Long-term debt, less current portion Liabilities related to assets held for sale 14,878 16,597 Total lease liabilities $ 76,120 $ 91,759

Information related to lease terms and discount rates as of March 31, 2021 and 2020, is disclosed in the table below.

2021 2020 Weighted average remaining lease term (years) Operating leases 7.3 7.2 Finance leases 6.9 6.9

Weighted average discount rate Operating leases 6.3% 6.2% Finance leases 6.8% 5.9%

The maturity of the Company's lease liabilities as of March 31, 2021, is disclosed in the table below.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Long-term Debt Mar. 31, 2021 Debt Disclosure [Abstract] Long-Term Debt 10. LONG-TERM DEBT Long-term debt consists of the following:

Revolving Credit Facility On August 17, 2020, the Company repaid the loans and other amounts outstanding under its Revolving Credit Facility, which was governed by the Revolving Credit Agreement and terminated all commitment thereunder. The payment of $335,240 was made using a portion of the proceeds from the issuance of the First Lien Notes. The Company initially cash collateralized the letters of credit issued under the Revolving Credit Agreement but now have the ability to issue letters of credit under the Securitization Facility. Receivables Securitization Program On August 17, 2020, the Company entered into amendments to its Securitization Facility. The August amendments removed the covenants that required the Company to maintain certain financial ratios. As of March 31, 2021, the maximum amount available under the Securitization Facility was $75,000, and the Company has the ability to reduce the facility amount to not less than $50,000. The actual amount available under the Securitization Facility at any point in time is dependent upon the balance of eligible accounts receivables as well as the amount of letters of credit outstanding. On September 29, 2020, the Company entered into additional amendments to the Securitization Facility. The September amendments provide the Company with enhanced liquidity options by establishing a letter of credit facility under the Securitization Facility which effectively replaces a similar limited letter of credit facility under the Revolving Credit Facility Amendment. Pursuant to the letter of credit facility, the Company may request the Securitization Facility’s administrator to issue one or more letters of credit that will expire no later than 12 months after the date of issuance, extension or renewal, as applicable. In connection with the Securitization Facility, the Company sells on a revolving basis certain eligible accounts receivable to Triumph Receivables, LLC, a wholly-owned special-purpose entity, which in turn sells a percentage ownership interest in the receivables to commercial paper conduits sponsored by financial institutions. The Company is the servicer of the trade accounts receivable under the Securitization Facility. Interest rates are based on the lesser of 0.75% or the London Interbank Offered Rate (“LIBOR”), plus a 2.50% fee on the drawn portion and 0.60% fee on the undrawn portion of the Securitization Facility. The Company secures its trade accounts

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document receivable, which are generally non-interest-bearing, in transactions that are accounted for as borrowings pursuant to ASC 860, Transfers and Servicing. At March 31, 2021, there were $0 in borrowings and $27,763 in letters of credit outstanding under the Securitization Facility, primarily to support insurance policies. The Securitization Facility expires in December 2022. The agreements governing the Securitization Facility contain restrictions and covenants, including limitations on the making of certain restricted payments; creation of certain liens; and certain corporate acts such as mergers, consolidations and the sale of all or substantially all the Company's assets.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The First Lien Notes and the guarantees will be secured, subject to permitted liens, by first-priority liens on substantially all of the Company’s and the Guarantor Subsidiaries’ assets (including certain of the Company’s real estate assets), whether now owned or hereafter acquired, other than certain excluded property, which liens will secure permitted additional first lien obligations on a pari passu basis, subject to the Collateral Trust Agreement and will rank senior to those that secure the 2024 Notes (the “Collateral”). Under certain circumstances, the Collateral may be released without action by, or the consent of, the holders of the First Lien Notes. The First Lien Notes and the guarantees will not be secured by the assets of Non-Guarantor Subsidiaries (as defined below), which include the unrestricted subsidiaries to whom certain of the Company’s accounts receivables are and may in the future be sold to support borrowing under the Receivables Securitization Facility. Pursuant to an intercreditor agreement (the “Intercreditor Agreement”) between Wilmington Trust, National Association, in its capacity as the collateral trustee (the “Collateral Trustee”) and U.S. Bank National Association, in its capacity as second lien collateral agent for the 2024 Notes, the liens on the Collateral securing the First Lien Notes and all future first lien obligations will be made expressly senior to the liens securing the 2024 Notes. A collateral trust agreement (the “Collateral Trust Agreement”) among the Company, the Guarantor Subsidiaries, the Collateral Trustee and U.S. Bank National Association, in its capacity as the trustee for the First Lien Notes, will set forth therein the relative rights with respect to the Collateral as among the trustee for the First Lien Notes and certain subsequent holders of first lien obligations and covering certain other matters relating to the administration of security interests. The Collateral Trust Agreement will generally control substantially all matters related to the Collateral, including with respect to decisions, distribution of proceeds or enforcement. Pursuant to the Collateral Trust Agreement, on the issue date of the First Lien Notes the Collateral Trustee will control certain matters related to the Collateral that the Collateral Trust Agreement specifies are in its discretion. If the Company incurs certain types of additional first lien obligations, the Controlling First Lien Holders (as defined in the Collateral Trust Agreement) will have the right to control decisions relating to the Collateral that are outside the Collateral Trustee’s discretion under the Collateral Trust Agreement and the First Lien Note holders may no longer be in control of such decisions. The Company may redeem the First Lien Notes, in whole or in part, at any time or from time to time on or after February 1, 2023, at specified redemption prices, plus accrued and unpaid interest, if any, to the redemption date. At any time or from time to time prior to February 1, 2023, the Company may redeem the First Lien Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make whole premium, together with accrued and unpaid interest, if any, to the redemption date. In addition, the Company may redeem up to 40% of the aggregate principal amount of the outstanding First Lien Notes prior to June 1, 2023, with the net cash proceeds from certain equity offerings at a redemption price equal to 108.875% of their principal amount, together with accrued and unpaid interest, if any, to the redemption date. If the Company experiences specific kinds of changes of control, the Company is required to offer to purchase all of the First Lien Notes at a purchase price of 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The First Lien Notes Indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions; (iii) make other restricted payments and investments; (iv) create liens; (v) incur restrictions on the ability of restricted subsidiaries to pay dividends or make certain other payments; (vi) sell assets, including capital stock of restricted subsidiaries; (vii) enter into sale and leaseback transactions; (viii) merge or consolidate with other entities; and (ix) enter into transactions with affiliates. In addition, the First Lien Notes Indenture requires, among other things, the Company to provide financial and current reports to holders of the First Lien Notes or file such reports electronically with the SEC. Furthermore, the First Lien Notes Indenture requires that

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document the future net proceeds from certain asset sales will be required to repay the First Lien Notes at a premium of 106.656%, until the aggregate principal amount of Notes outstanding is $350,000 or less, provided that the Company may retain the first $100,000 of such net proceeds (subject to compliance with the asset sale covenants in the Company’s other outstanding indentures) or use it for certain other permitted purposes. These covenants are subject to a number of exceptions, limitations and qualifications set forth in the Indenture, as well as suspension periods in certain circumstances.

Senior Secured Notes Due 2024 On September 23, 2019, the Company issued $525,000 principal amount of 6.250% Senior Secured Notes due September 15, 2024. The 2024 Notes were sold at 100% of principal amount and have an effective interest yield of 6.250%. Interest is payable semiannually in cash in arrears on March 15 and September 15 of each year, commencing on March 15, 2020. In connection with the issuance of the 2024 Notes, the Company incurred approximately $9,300 of costs, which were deferred and are being amortized over the term of the 2024 Notes. The 2024 Notes are second lien secured obligations of the Company and its subsidiary guarantors. The 2024 Notes: (i) rank equal in right of payment to existing and future senior indebtedness of the Company and its subsidiary guarantors, including the obligations of the Company and its subsidiary guarantors under the Company’s credit facility; (ii)are effectively subordinated to all obligations of the Company and its subsidiary guarantors that are either (A) secured by a lien on the Collateral (as defined below) that is senior or prior to the second-priority liens securing the 2024 Notes, including the first-priority liens securing borrowings under the Company’s credit facility and certain cash management and hedging obligations, or (B) secured by assets that do not constitute the Collateral, in each case to the extent of the value of the assets securing such obligations; (iii)are senior in right of payment to existing and future subordinated indebtedness of the Company and its subsidiary guarantors; (iv)are effectively senior to all existing and future unsecured debt of the Company and its subsidiary guarantors, but only to the extent of the value of the Collateral (after giving effect to any senior liens on the Collateral); and (v)are structurally subordinated in right of payment to all indebtedness and other liabilities of the Company’s existing and future subsidiaries that do not guarantee the 2024 Notes. The 2024 Notes are guaranteed on a full, senior secured, joint and several basis by each of the Company’s domestic restricted subsidiaries that is a borrower under the Company’s credit facility or that guarantees any of the Company’s debt or that of any of the Company’s domestic restricted subsidiaries under the Company’s credit facility and in the future by any of the Company’s domestic restricted subsidiaries that are borrowers under any credit facility or that guarantee any debt of the Company or any of its domestic restricted subsidiaries incurred under any credit facility (the "Guarantor Subsidiaries"). The Company may redeem the 2024 Notes, in whole or in part, at any time or from time to time on or after September 15, 2020, at specified redemption prices, plus accrued and unpaid interest, if any, to the redemption date. At any time or from time to time prior to September 15, 2020, the Company may redeem the 2024 Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make whole premium, together with accrued and unpaid interest, if any, to the redemption date. In addition, the Company may redeem up to 40% of the aggregate principal amount of the outstanding 2024 Notes prior to September 15, 2020, with the net cash proceeds from certain equity offerings at a redemption price equal to 106.250% of their principal amount, together with accrued and unpaid interest, if any, to the redemption date.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document If the Company experiences specific kinds of changes of control, the Company is required to offer to purchase all of the 2024 Notes at a purchase price of 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The 2024 Notes were issued pursuant to an indenture dated as of September 23, 2019 (the “Indenture”). The Indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions; (iii) make other restricted payments and investments; (iv) create liens; (v) incur restrictions on the ability of restricted subsidiaries to pay dividends or make certain other payments; (vi) sell assets, including capital stock of restricted subsidiaries; (vii) enter into sale and leaseback transactions; (viii) merge or consolidate with other entities; and (ix) enter into transactions with affiliates.

Senior Notes due 2022 On June 3, 2014, the Company issued $300,000 principal amount of 5.25% Senior Notes due June 1, 2022 (the "2022 Notes"). The 2022 Notes were sold at 100% of principal amount and have an effective interest yield of 5.25%. Interest is payable semiannually in cash in arrears on June 1 and December 1 of each year, commencing on December 1, 2014. In connection with the issuance of the 2022 Notes, the Company incurred approximately $4,990 of costs, which were deferred and are being amortized on the effective interest method over the term of the 2022 Notes. The 2022 Notes are the Company's senior unsecured obligations and rank equally in right of payment with all of its other existing and future senior unsecured indebtedness and senior in right of payment to all of its existing and future subordinated indebtedness. The 2022 Notes are guaranteed on a full, joint and several basis by each of the Guarantor Subsidiaries. The Company is obligated to offer to repurchase the 2022 Notes at a price of (i) 101% of their principal amount plus accrued and unpaid interest, if any, as a result of certain change-of-control events and (ii) 100% of their principal amount plus accrued and unpaid interest, if any, in the event of certain asset sales. These restrictions and prohibitions are subject to certain qualifications and exceptions. In the year ended March 31, 2021, the Company extinguished $63,529 of the principle balance owed under the 2022 Notes through cash payments. The 2022 Indenture contains covenants that, among other things, limit the Company's ability and the ability of any of the Guarantor Subsidiaries to (i) grant liens on its assets, (ii) make dividend payments, other distributions or other restricted payments, (iii) incur restrictions on the ability of the Guarantor Subsidiaries to pay dividends or make other payments, (iv) enter into sale and leaseback transactions, (v) merge, consolidate, transfer or dispose of substantially all of their assets, (vi) incur additional indebtedness, (vii) use the proceeds from sales of assets, including capital stock of restricted subsidiaries, and (viii) enter into transactions with affiliates.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The 2025 Notes are guaranteed on a full, joint and several basis by each of the Guarantor Subsidiaries. The Company may redeem some or all of the 2025 Notes prior to August 15, 2020, by paying a "make-whole" premium. The Company may redeem some or all of the 2025 Notes on or after August 15, 2020, at specified redemption prices. In addition, prior to August 15, 2020, the Company may redeem up to 35% of the 2025 Notes with the net proceeds of certain equity offerings at a redemption price equal to 107.75% of the aggregate principal amount plus accrued and unpaid interest, if any, subject to certain limitations set forth in the indenture governing the 2025 Notes (the "2025 Indenture"). The Company is obligated to offer to repurchase the 2025 Notes at a price of (i) 101% of their principal amount plus accrued and unpaid interest, if any, as a result of certain change-of-control events and (ii) 100% of their principal amount plus accrued and unpaid interest, if any, in the event of certain asset sales. These restrictions and prohibitions are subject to certain qualifications and exceptions. The 2025 Indenture contains covenants that, among other things, limit the Company's ability and the ability of any of the guarantor subsidiaries to (i) grant liens on its assets, (ii) make dividend payments, other distributions or other restricted payments, (iii) incur restrictions on the ability of the Guarantor Subsidiaries to pay dividends or make other payments, (iv) enter into sale and leaseback transactions, (v) merge, consolidate, transfer or dispose of substantially all of their assets, (vi) incur additional indebtedness, (vii) use the proceeds from sales of assets, including capital stock of restricted subsidiaries, and (viii) enter into transactions with affiliates.

March 31, 2021 March 31, 2020 Carrying Fair Carrying Fair Value Value Value Value $ 1,957,543 $ 2,085,204 $ 1,807,507 $ 1,559,455

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Other Noncurrent Liabilities Mar. 31, 2021 Other Liabilities Noncurrent [Abstract] Other Noncurrent Liabilities 11. OTHER NONCURRENT LIABILITIES Other noncurrent liabilities are composed of the following items:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Income Taxes Mar. 31, 2021 Income Tax Disclosure [Abstract] Income Taxes 12. INCOME TAXES The components of loss from continuing operations before income taxes are as follows:

Year ended March 31, 2021 2020 2019 Foreign $ (1,518) $ 33,399 $ (18,336) Domestic (446,511) (57,034) (314,236) $ (448,029) $ (23,635) $ (332,572)

The components of income tax (benefit) expense are as follows:

A reconciliation of the statutory federal income tax rate to the effective tax rate is as follows:

Year ended March 31, 2021 2020 2019 Statutory federal income tax rate 21.0% 21.0% 21.0% State and local income taxes, net of federal tax benefit 2.7 (12.1) 4.6 Goodwill impairment — (37.4) — Disposition of business — — 3.2 Miscellaneous permanent items and nondeductible accruals (0.7) 3.9 (1.2) Research and development tax credit 0.7 30.4 3.3 Foreign tax credits (0.3) (24.1) (0.7) Valuation allowance (25.5) 29.3 (28.6) Tax reform and CARES Act — (12.3) 0.4 Global Intangible Low-Taxed Income — (20.4) (1.3) Other (including foreign rate differential and FIN 48) 1.4 (2.8) 0.9 Effective income tax rate (0.7)% (24.5)% 1.6%

The components of deferred tax assets and liabilities are as follows:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document March 31, 2021 2020 Deferred tax assets: Net operating loss and other credit carryforwards $ 345,071 $ 318,341 Inventory 21,484 17,521 Accruals and reserves 34,379 40,492 Interest carryforward 62,893 38,383 Pension and other postretirement benefits 89,952 152,048 Lease right-of-use assets 6,890 11,495 Prepaid expenses and other — 241 Acquired contract liabilities, net 7,504 21,771 568,173 600,292 Valuation allowance (512,554) (438,667) Net deferred tax assets 55,619 161,625 Deferred tax liabilities: Deferred revenue 22,342 38,458 Property and equipment 12,581 34,939 Goodwill and other intangible assets 21,701 80,740 Lease liabilities 5,848 14,928 Prepaid expenses and other 588 — 63,060 169,065 Net deferred tax liabilities $ 7,441 $ 7,440

The Company follows ASC 740, Income Taxes, which prescribes a recognition threshold and measurement attribute criteria for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return, as well as guidance on derecognition, classification, interest and penalties, disclosure and transition. The Company's policy is to release the tax effects from accumulated other comprehensive income when all of the related assets or liabilities that gave rise to the accumulated other comprehensive income have been derecognized. The Company has elected to treat global intangible low-taxed income (“GILTI”) as a period expense. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. When determining the amount of net deferred tax assets that are more likely than not to be realized, the Company assesses all available positive and negative evidence. This evidence includes, but is not limited to, prior earnings history, expected future earnings, carry-back and carry-forward periods and the feasibility of ongoing tax strategies that could potentially enhance the likelihood of the realization of a deferred tax asset. The weight given to the positive and negative evidence is commensurate with the extent the evidence may be objectively verified. As such, it is generally difficult for positive evidence regarding projected future taxable income exclusive of reversing taxable temporary differences to outweigh objective negative evidence of recent financial reporting losses. Based on these criteria and the relative weighting of both the positive and negative evidence available, and in particular the activity surrounding the Company's prior earnings history, including the forward losses and intangible impairments previously recognized, management determined that it was necessary to establish a valuation allowance against principally all of its net deferred tax assets. Given the objective verifiable negative evidence of a three-year cumulative loss and the weighting of all available positive evidence, the Company excluded projected taxable income (aside from reversing taxable temporary differences) from the assessment of income that could be used as a source of taxable income to realize the deferred tax assets. During fiscal year 2021, the Company adjusted the valuation allowance against the consolidated net deferred tax asset by $73,887 primarily due to an increase in the net operating loss and changes to temporary differences related to the impairment of long- lived intangible assets, interest disallowance, and pension and other postretirement

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document benefit plans. As of March 31, 2021, management determined that it was necessary to maintain a valuation allowance against principally all of its net deferred tax assets. As of March 31, 2021, the Company has net operating loss carryforwards of $659,278, $1,427,890, and $140,839 for U.S. federal, state, and foreign jurisdictions, respectively. The effective income tax rate for the fiscal year ended March 31, 2021, was (0.7)% as compared with (24.5)% for the fiscal year ended March 31, 2020. The effective income tax rate for the fiscal year ended March 31, 2021, included the benefit of the R&D tax credit of $3,076, the benefit of the foreign tax rate differences of $1,244, and the change in the valuation allowance of $114,283. Due to the current year pretax loss, the effective tax rate drivers on a percentage basis are amplified. Accordingly, a year-over-year comparison of the effective tax rate may not be indicative of changes in the Company's tax position. The Company has been granted income tax holiday as an incentive to attract foreign investment by the Government of Thailand. The tax holidays expire in various years through 2026. The Company does not have any other tax holidays in the jurisdictions in which it operates. The income tax benefit attributable to the tax status of our subsidiaries in Thailand was approximately $0 or $0.00 per diluted share in fiscal 2021, $1,932 or $0.04 per diluted share in fiscal 2020 and $2,160 or $0.04 per diluted share in fiscal 2019. At March 31, 2021, cumulative undistributed earnings of foreign subsidiaries, for which no U.S. income or foreign withholding taxes have been recorded is $162,467. As the Company currently intends to indefinitely reinvest all such earnings, no provision has been made for income taxes that may become payable upon distribution of such earnings, and it is not practicable to determine the amount of the related unrecognized deferred income tax liability. The Company has classified uncertain tax positions as noncurrent income tax liabilities unless expected to be paid in one year. As of March 31, 2021 and 2020, the total amount of unrecognized tax benefits was $11,536 and $18,965, respectively, all of which would impact the effective rate, if recognized. The Company anticipates that total unrecognized tax benefits may be reduced by zero in the next 12 months. With a few exceptions, the Company is no longer subject to U.S. federal, state, or local income tax examinations, or foreign income tax examinations by tax authorities, for fiscal years ended before March 31, 2014. As of March 31, 2021, the Company is not subject to any income tax examinations. The Company has filed appeals in a prior state examination related to fiscal years ended March 31, 1999 through March 31, 2005. The Company believes appropriate provisions for all outstanding issues have been made for all jurisdictions and all open years. A reconciliation of the liability for uncertain tax positions, which are included in deferred taxes for the fiscal years ended March 31, 2021 and 2020, follows:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Stockholders' Deficit Mar. 31, 2021 Equity [Abstract] Stockholders' Deficit 13. STOCKHOLDERS' DEFICIT On February 4, 2021, the Company implemented a new “at the market” stock issuance program by entering into an Equity Distribution Agreement (the “Equity Distribution Agreement”) with Citigroup Global Markets Inc. (the “Manager”). Under the terms of the Equity Distribution Agreement, the Company may from time to time to or through the Manager, acting as agent and/or principal, offer and sell shares of its common stock (the “Shares”), par value $0.001 per share (“Common Stock”) having a gross sales price of up to $150,000. From the date the program was implemented through March 31, 2021, the Company completed the program, selling 9,178,752 shares with a gross sales price of $150,000 for total proceeds net of stock issuance costs of $145,383. In March 2019, the Company adopted a tax benefits preservation plan (the "Plan") designed to preserve Triumph’s ability to utilize its net operating loss carryforwards and other tax attributes (collectively, "Tax Benefits"). The Plan is similar to plans adopted by other public companies with significant Tax Benefits. The Company obtained stockholder approval for the Plan as well as an amendment to the Company’s amended and restated certificate of incorporation that permitted the issuance of Rights (as defined below) related to preferred stock, at its annual meeting of stockholders in 2019. Under the Plan, Triumph declared a dividend distribution of one right (a “Right”) for each share of its common stock outstanding at the close of business on March 25, 2019. The Rights trade with Triumph’s common shares and will expire on March 13, 2022. The Rights also will expire: (i) if the Rights are redeemed or exchanged as provided in the Plan; (ii) if the Board determines that the Plan is no longer necessary or desirable for the preservation of the Tax Benefits; or (iii) if the Board determines that no Tax Benefits, once realized, as applicable, may be carried forward (in which case, the Rights will expire on the first date of the relevant taxable year for which such determination is made). Pursuant to the Plan, if a stockholder (or group) becomes a 5% stockholder without meeting certain customary exceptions, the Rights become exercisable and entitle stockholders (other than the 5% stockholder or group causing the rights to become exercisable) to purchase additional shares of Triumph at a significant discount, resulting in significant dilution in the economic interest and voting power of the 5% stockholder or group causing the Rights to become exercisable. Stockholders owning five percent or more of Triumph’s outstanding shares at the time the Plan was adopted were grandfathered and will only cause the Rights to distribute and become exercisable if they acquire an additional one percent or more of Triumph’s outstanding shares. Under the Plan, the Board has the ability to determine in its sole discretion that any person shall not be deemed an acquiring person and therefore that the Rights shall not become exercisable if such person becomes a 5% stockholder. The adoption of the Plan and the dividend distribution did not have an impact on the Company’s consolidated financial statements. In 2014, the Company's Board of Directors authorized an increase in the Company's existing stock repurchase program by up to 5,000,000 shares of its common stock in addition to the 500,800 shares authorized under prior authorizations. As of March 31, 2021, the Company remains able to purchase an additional 2,277,789 shares. Repurchases may be made from time to time in open market transactions, block purchases, privately negotiated transactions or otherwise at prevailing prices. No time limit has been set for completion of the program. The holders of the common stock are entitled to one vote per share on all matters to be voted upon by the stockholders of Triumph.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The Company has preferred stock of $0.01 par value, 250,000 shares authorized. At March 31, 2021 and 2020, zero shares of preferred stock were outstanding.

Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss ("AOCI") by component for the years ended March 31, 2021 and 2020, were as follows:

Unrealized Gains Defined Benefit and Losses Pension Plans Currency on and Other Translation Derivative Postretirement Adjustment Instruments Benefits Total (1) March 31, 2019 $(48,606) $ (1,130) $ (466,275) $ (516,011) AOCI before reclassifications (13,439) (1,611) (208,835) (223,885) Amounts reclassified from AOCI — (1,562) (4,990) (2) (6,552) Net current period OCI (13,439) (3,173) (213,825) (230,437) March 31, 2020 (62,045) (4,303) (680,100) (746,448) AOCI before reclassifications 19,884 5,891 168,701 194,476 Amounts reclassified from AOCI — (573) 22,353 (2) 21,780 Net current period OCI 19,884 5,318 191,054 216,256 March 31, 2021 $(42,161) $ 1,015 $ (489,046) $(530,192)

(1) Net of tax. (2) Includes amortization of actuarial losses and recognized prior service (credits) costs, which are included in the net periodic pension cost

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Loss per Share Mar. 31, 2021 Earnings Per Share [Abstract] Loss per Share 14. LOSS PER SHARE The following is a reconciliation between the weighted average common shares outstanding used in the calculation of basic and diluted loss per share:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Employee Benefit Plans Mar. 31, 2021 Compensation And Retirement Disclosure [Abstract] Employee Benefit Plans 15. EMPLOYEE BENEFIT PLANS Defined Contribution Pension Plan The Company sponsors a defined contribution 401(k) plan, under which salaried and certain hourly employees may defer a portion of their compensation. Eligible participants may contribute to the plan up to the allowable amount as determined by the plan of their regular compensation before taxes. The Company generally matches contributions up to 75% of the first 6% of compensation contributed by the participant. All contributions and Company matches are invested at the direction of the employee in one or more investment options offered under the plan. Company matching contributions vest immediately and aggregated to $1,665, $14,763, and $13,685 for the fiscal years ended March 31, 2021, 2020, and 2019, respectively. Effective April 1, 2020, the Company suspended its 401(k) matching contribution for non-represented employees and some represented employees for fiscal year 2021 and has continued the suspension for fiscal year 2022.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document traded were valued based on the estimated fair value of those investments based on the Company’s evaluation of data from fund managers and comparable market data. The following table sets forth the Company's consolidated defined benefit pension plans for its union and non-union employees as of March 31, 2021 and 2020, and the amounts recorded on the consolidated balance sheets at March 31, 2021 and 2020. Company contributions include amounts contributed directly to plan assets and indirectly as benefits paid from the Company's assets. Benefit payments reflect the total benefits paid from the plans and the Company's assets. Information on the plans includes both the domestic qualified and nonqualified plans and the foreign qualified plans.

Other Postretirement Pension Benefits Benefits Year ended March 31, Year ended March 31, 2021 2020 2021 2020 Change in projected benefit obligations Projected benefit obligation at beginning of year $2,254,985 $2,234,734 $ 7,150 $109,455 Service cost 1,537 2,336 — 62 Interest cost 64,599 68,446 112 1,559 Actuarial loss (gain) 83,263 138,652 (156) 3,472 Plan amendments — 4,898 — (99,080) Curtailments — 22,732 — — Divestitures — (55,354) — — Participant contributions 164 204 — 252 Settlements — (14,579) — — Special termination benefits — 11,642 — — Benefits paid (179,956) (156,084) (2,182) (8,570) Currency translation adjustment 5,656 (2,642) — — Projected benefit obligation at end of year $2,230,248 $2,254,985 $ 4,924 $ 7,150 Accumulated benefit obligation at end of year $2,228,830 $2,252,126 $ 4,924 $ 7,150 Assumptions used to determine benefit obligations at end of year Discount rate 2.05 - 2.47 - 3.17% 3.32% 2.51% 3.00% Rate of compensation increase 2.80 - 3.50 - 3.50% 4.50% N/A N/A

Other Postretirement Pension Benefits Benefits Year ended March 31, Year ended March 31, 2021 2020 2021 2020 Change in fair value of plan assets Fair value of plan assets at beginning of year $1,598,045 $ 1,796,111 $ — $ — Actual return on plan assets 388,392 (20,869) — — Settlements — (14,579) — — Participant contributions 164 204 — 252 Divestitures — (55,354) — — Company contributions 41,201 51,372 2,182 8,319 Benefits paid (179,956) (156,084) (2,182) (8,571) Currency translation adjustment 6,117 (2,756) — —

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Fair value of plan assets at end of year $1,853,963 $1,598,045 $ — $ — Funded status (underfunded) Funded status $ (376,285) $ (656,940) $ (4,924) $ (7,150) Reconciliation of amounts recognized on the consolidated balance sheets Pension asset—noncurrent $ 7,515 $ 1,503 $ — $ — Accrued benefit liability—current (1,097) (753) (3,372) (4,775) Accrued benefit liability—noncurrent (382,703) (657,690) (1,552) (2,375) Net amount recognized $ (376,285) $ (656,940) $ (4,924) $ (7,150) Reconciliation of amounts recognized in accumulated other comprehensive income Prior service credits $ 4,621 $ 5,595 $ (54,109) $ (59,214) Actuarial losses (gains) 755,234 953,913 (53,542) (58,151) Income tax (benefits) expenses related to above items (204,594) (204,594) 42,016 42,016 Unamortized benefit plan costs (gains) $ 555,261 $ 754,914 $ (65,635) $ (75,349)

The components of net periodic benefit cost for fiscal years ended March 31, 2021, 2020, and 2019, are as follows:

Pension Benefits Other Postretirement Benefits Year Ended March 31, Year Ended March 31, 2021 2020 2019 2021 2020 2019 Components of net periodic pension cost Service cost $ 1,537 $ 2,336 $ 3,292 $ 0 $ 62 $ 227 Interest cost 64,599 68,446 79,446 112 1,559 4,039 Expected return on plan assets (136,581) (141,972) (145,361) — — — Amortization of prior service credit cost 974 (874) (3,619) (5,105) (4,872) (4,655) Amortization of net loss 31,248 28,288 20,151 (4,766) (6,361) (9,851) Curtailment loss (gain) — 23,690 — — (49,491) — Settlements — 29,313 — — — — Special termination benefits — 11,642 4,032 — — — Total net periodic benefit (income) expense $ (38,223) $ 20,869 $ (42,059) $(9,759) $(59,103) $(10,240) Assumptions used to determine net periodic pension cost

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Discount rate 2.47 - 2.54 - 2.65 - 2.68 - 3.32% 3.88% 4.01% 3.00% 3.77% 3.93% Expected long- term rate of return on plan 5.00 - 5.00 - 5.00 - assets 8.00% 8.00% 8.00% N/A N/A N/A Rate of compensation 3.50 - 3.50 - 3.50 - increase 4.50% 4.50% 4.50% N/A N/A N/A

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document The following summarizes the key events whose effects on net periodic benefit cost and obligations are included in the tables above: • As disclosed in Note 3, in March 2020, the Company transferred approximately $55,354 of pension assets and liabilities to the buyer of its Nashville manufacturing operations. The divestiture transaction and resulting transfer resulted in a settlement charge of approximately $28,452 and a curtailment charge of approximately $214. These amounts are included in non-service defined benefit income on the consolidated statements of operations for the year ended March 31, 2020. • In September 2019, the Company and the union which represents a portion of the workforce at the Company’s Grand Prairie, TX, facility, in conjunction with an announced shutdown of this facility, agreed to changes to the pension and retiree welfare plans for represented plan members. Effective April 1, 2020, all current retiree welfare benefits for the union-represented retirees and active employees will cease. A new benefit consisting of a one-time credit to Heath Reimbursement Accounts for the current retirees and their covered dependents will be provided. The Company and the union also agreed to increased pension benefits which are effective with the ratification of the agreement. This agreement resulted in a decrease of the projected other post-employment benefits ("OPEB") benefit obligation of $61,766. It also resulted in a one-time OPEB curtailment gain of $41,128. As a result of the planned shutdown, subsidized early retirement provisions within the retirement plan and the agreed-to pension benefit increases, a pension curtailment loss of $23,476 was recognized, along with a one-time charge of $11,642 for special termination benefits. The net curtailment gain and charge for special termination benefits are included in non-service defined benefit income on the consolidated statements of operations for the year ended March 31, 2020.

Expected Pension Benefit Payments The total estimated future benefit payments for the pension plans are expected to be paid from the plan assets and company funds. The OPEB payments reflect the

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Company's portion of the funding. Estimated future benefit payments from plan assets and Company funds for the next ten years are as follows:

Other Pension Postretirement Year Benefits Benefits* 2022 $ 192,745 $ 3,375 2023 163,947 169 2024 163,676 161 2025 156,660 153 2026 154,324 143 2027 - 2031 705,477 585

Plan Assets, Investment Policy and Strategy The table below sets forth the Company's target asset allocation for fiscal 2021 and the actual asset allocations at March 31, 2021 and 2020.

Pension plan assets are invested in various asset classes that are expected to produce a sufficient level of diversification and investment return over the long-term. The investment goals are to exceed the assumed actuarial rate of return over the long-term within reasonable and prudent levels of risks and to meet future obligations. Asset/liability studies are conducted on a regular basis to provide guidance in setting investment goals for the pension portfolio and its asset allocation. The asset allocation aims to prudently achieve a strong, risk-adjusted return while seeking to minimize funding level volatility and improve the funded status of the plans. The pension plans currently employ a liability-driven investment ("LDI") approach, where assets and liabilities move in the same direction. The goal is to limit the volatility of the funding status and cover part, but not all, of the changes in liabilities. Most of the liabilities' changes are due to interest rate movements. To balance expected risk and return, allocation targets are established and monitored against acceptable ranges. All investment policies and procedures are designed to ensure that the plans' investments are in compliance with the Employee Retirement Income Security Act of 1974 ("ERISA"). Guidelines are established defining permitted investments within each asset class. Each investment manager has contractual guidelines to ensure that investments are made within the parameters of their asset class or in the case of multi-asset class managers, the parameters of their multi-asset class strategy. Certain investments are not permitted at any time, including investment directly in employer securities and uncovered short sales. The tables below provide the fair values of the Company's plan assets at March 31, 2021 and 2020, by asset category. The table also identifies the level of inputs used to determine the fair value of assets in each category (refer to Note 2 for definition of levels).

March 31, 2021

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Level 1 Level 2 Level 3 Total Assets Cash and cash equivalents $ 42,003 $ — $ — $ 42,003 Equity securities International 164,298 — — 164,298 U.S. equity 7,410 — — 7,410 U.S. commingled fund 537,813 — — 537,813 International commingled fund 42,944 — — 42,944 Fixed income securities Corporate bonds — 12,231 — 12,231 Government securities — 103,853 — 103,853 U.S. commingled fund 509,760 — — 509,760 Other Insurance contracts — — 9,813 9,813 Total investment in securities—assets $1,304,228 $ 116,084 $ 9,813 $1,430,125 U.S. equity commingled fund 17,289 International equity commingled fund 158,447 U.S. fixed income commingled fund 59,203 International fixed income commingled fund 1,599 Government securities commingled fund 24,384 Private equity and infrastructure 95,880 Other 1,549 Total investment measured at NAV as a practical expedient $ 358,351 Receivables 67,378 Payables (1,892) Total plan assets $1,853,962

March 31, 2020 Level 1 Level 2 Level 3 Total Assets Cash and cash equivalents $ 35,110 $ — $ — $ 35,110 Equity securities International 155,389 — — 155,389 U.S. equity 2 — — 2 U.S. commingled fund 400,131 — — 400,131 International commingled fund 34,014 — — 34,014 Fixed income securities Corporate bonds — 23,672 — 23,672 Government securities — 93,677 — 93,677 U.S. commingled fund 605,487 — — 605,487 Other Insurance contracts — — 910 910 Total investment in securities—assets $1,230,133 $117,349 $ 910 $1,348,392 U.S. equity commingled fund 8,180 International equity commingled fund 67,101 U.S. fixed income commingled fund 73,838

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document International fixed income commingled fund 1,380 Government securities commingled fund 8,333 Private equity and infrastructure 89,797 Other 1,534 Total investment measured at NAV as a practical expedient $ 250,163 Receivables 3,292 Payables (3,802) Total plan assets $1,598,045

Cash equivalents and other short-term investments are primarily held in registered short- term investment vehicles which are valued using a market approach based on quoted market prices of similar instruments. Public equity securities, including common stock, are primarily valued using a market approach based on the closing fair market prices of identical instruments in the principal market on which they are traded. Commingled funds that are open-ended mutual funds for which the fair value per share is determined and published by the respective mutual fund sponsor and is the basis for current observable transactions are categorized as Level 1 fair value measures. Investments in commingled funds and private equity and infrastructure funds are carried at net asset value ("NAV") as a practical expedient to estimate fair value. The NAV is the total value of the fund divided by the number of shares outstanding. Adjustments to NAV, if any, are determined based on evaluation of data provided by fund managers, including valuation of the underlying investments derived using inputs such as cost, operating results, discounted future cash flows and market-based comparable data. In accordance with ASC 820-10, investments that are measured at NAV practical expedient are not classified in the fair value hierarchy; however, their fair value amounts are presented in these tables to permit reconciliation of the fair value hierarchy to the total plan assets disclosed in this footnote. Corporate, government agency bonds and mortgage-backed securities are primarily valued using a market approach with inputs that include broker quotes, benchmark yields, base spreads and reported observable trades for identical or comparable instruments. Other investments include private equity and infrastructure funds and insurance contracts. Investments in private equity and infrastructure funds are carried at estimated fair value based on NAV as a practical expedient and other appropriate adjustments to NAV as determined based on an evaluation of data provided by fund managers, including valuations of the underlying investments derived using inputs such as cost, operating results, discounted future cash flows, and market-based comparable data.

Other Pension Postretirement Benefits Benefits Increase of 25 basis points Obligation *$ (52,031) $ (33)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Net periodic expense 586 4 Decrease of 25 basis points Obligation *$ 54,288 $ 34 Net periodic expense (707) 4

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Stock Compensation Plans Mar. 31, 2021 Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Stock Compensation Plans 16. STOCK COMPENSATION PLANS The Company has stock incentive plans under which employees and non-employee directors may be granted equity awards in the form of stock options with an exercise price equal to the fair value of the Company’s stock on the grant date or in the form of restricted stock or restricted stock units that vest pursuant to service conditions and, in some cases, performance or market conditions. The stock incentive and compensation plans under which outstanding equity awards have been granted to employees, officers and non-employee directors are the Triumph Group 2018 Equity Plan (the "2018 Plan"), the Triumph Group 2013 Equity and Cash Incentive Plan (the “2013 Plan”), the 2016 Directors’ Equity Compensation Plan, as amended (the “Directors’ Plan”), and the Amended and Restated Directors’ Stock Incentive Plan (the “Prior Directors’ Plan”). The Prior Directors’ Plan expired by its terms during fiscal 2017. The current stock incentive and compensation plans used for future awards are the 2013 Plan for employees, officers and consultants, the Directors’ Plan, and the 2018 Plan. The 2018 Plan, the 2013 Plan, the Directors’ Plan, and the Prior Directors’ Plan are collectively referred to in this note as the plans. Management and the compensation committee have utilized restricted stock and restricted stock units as its primary form of share-based incentive compensation. Restricted stock and restricted stock units that vest solely pursuant to service conditions generally vest on a grade basis over a three year period and are subject to forfeiture should the grantee’s employment be terminated prior to an applicable vesting date. Management and the compensation committee have also granted restricted stock and restricted stock units, referred to herein as performance restricted stock awards, that vest pursuant to a combination of service conditions as well as market and performance conditions. Such awards generally vest on a cliff vesting basis at the end of a three year service period, subject to specific market or performance conditions. The market and performance conditions may result in the awards vesting below target, including zero vesting awards if certain threshold vesting conditions are not met, up to 200% of the number of awards granted, if certain vesting conditions are exceeded. .The share-based payment expense arising from restricted stock and restricted stock unit expense is included in capital in excess of par value. The fair value of restricted stock or restricted stock units awards subject only to service conditions or service and performance conditions is determined by the product of the number of shares granted and the grant date market price of the Company's common stock. The fair value of restricted stock or restricted stock units awards that contain market conditions is determined by the product of the number of shares granted and the grant date fair value of such an award value using a Monte Carlo valuation methodology. The fair value of share-based compensation granted to employees was $13,103, $13,249, and $15,911 during the fiscal years ended March 31, 2021, 2020, and 2019, respectively. The fair value of restricted stock and restricted stock unit awards is expensed on a straight-line basis over the requisite service period which is typically the vesting period. The Company recognized $12,701, $11,062 and $10,259 of share-based compensation expense during the fiscal years ended March 31, 2021, 2020, and 2019, respectively. The Company has classified share-based compensation within selling, general and administrative expenses to correspond with the same line item as the majority of the cash compensation paid to employees. At March 31, 2021 and 2020, 2,019,502 shares and 1,564,791 shares of common stock, respectively, were available for issuance under the plans. A summary of the status of the Company's non-vested shares/units of restricted stock and deferred stock units as of

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document March 31, 2021, and changes during the fiscal year ended March 31, 2021, is presented below.

Weighted- Average Grant Date Fair Shares Value Non-vested restricted awards and deferred stock units at March 31, 2020 1,159,630 $ 24.40 Granted 1,154,181 11.35 Vested (396,847) 20.25 Forfeited (218,205) 17.58 Non-vested restricted awards and deferred stock units at March 31, 2021 1,698,759 $ 15.46

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Commitments and 12 Months Ended Contingencies Mar. 31, 2021 Commitments And Contingencies [Abstract] Commitments and 17. COMMITMENTS AND CONTINGENCIES Contingencies Certain of the Company's business operations and facilities are subject to a number of federal, state, local and foreign environmental laws and regulations. Former owners generally indemnify the Company for environmental liabilities related to the assets and businesses acquired which existed prior to the acquisition dates. In the opinion of management, there are no significant environmental contingent liabilities which would have a material effect on the financial condition or operating results of the Company which are not covered by such indemnification. As the Company completes its restructuring plans as disclosed in Note 18, including the disposal of certain facilities, the Company may be exposed to additional costs such as environmental remediation obligations, lease termination costs, or supplier claims which may have a material effect on its financial position or results of operations when such matters arise and a reasonable estimate of the costs can be made. The Company's risk related to pension projected obligations as of March 31, 2021, is significant. This amount is currently in excess of the related plan assets. Benefit plan assets are invested in a diversified portfolio of investments in both the equity and debt categories, as well as limited investments in real estate and other alternative investments. The market value of all of these investment categories may be adversely affected by external events and the movements and volatility in the financial markets, including such events as the current credit and real estate market conditions. Declines in the market values of the Company’s plan assets could expose the total asset balance to significant risk which may cause an increase to future funding requirements. Some raw materials and operating supplies are subject to price and supply fluctuations caused by market dynamics. The Company's strategic sourcing initiatives seek to find ways of mitigating the inflationary pressures of the marketplace. In recent years, these inflationary pressures have affected the market for raw materials. However, the Company believes that raw material prices will remain stable through the remainder of fiscal 2022 and after that, experience increases that are in line with inflation. Additionally, the Company generally does not employ forward contracts or other financial instruments to hedge commodity price risk. The Company's suppliers' failure to provide acceptable raw materials, components, kits and subassemblies would adversely affect production schedules and contract profitability. The Company maintains an extensive qualification and performance surveillance system to control risk associated with such supply base reliance. The Company is dependent on third parties for certain information technology services. To a lesser extent, the Company is also exposed to fluctuations in the prices of certain utilities and services, such as electricity, natural gas, chemical processing and freight. The Company utilizes a range of long-term agreements and strategic aggregated sourcing to optimize procurement expense and supply risk in these categories. In the ordinary course of business, the Company is involved in disputes, claims and lawsuits with employees, suppliers and customers, as well as governmental and regulatory inquiries, that it deems to be immaterial. Some may involve claims or potential claims of substantial damages, fines, penalties or injunctive relief. While the Company cannot predict the outcome of any pending or future litigation or proceeding and no assurances can be given, the Company does not believe that any pending matter will have a material effect, individually or in the aggregate, on its financial position or results of operations.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Restructuring Costs Mar. 31, 2021 Restructuring And Related Activities [Abstract] Restructuring Costs 18. RESTRUCTURING COSTS During the fiscal years ended March 31, 2017 and 2016, the Company committed to restructuring plans involving certain of its businesses, as well as the consolidation of certain of its facilities. With the exception of certain consolidations to be completed in future years, these plans were substantially complete as of March 31, 2020. During the year ended March 31, 2021, the Company incurred costs of $7,871, $36,879, and $8,474, within Systems & Support, Aerospace Structures, and its corporate headquarters, respectively, for total restructuring costs of $53,224 associated with new restructuring plans. Of the restructuring costs within Aerospace Structures, approximately $17,737 pertained to postemployment benefits arising from reductions in force, $15,781 pertained to facility closures, and the remaining $2,937 pertained to third- party consulting and other costs. The restructuring costs within Systems & Support and Corporate are primarily related to postemployment benefits arising from reductions in force and third-party consulting costs. The majority of restructuring plans are complete and the related costs have been settled as of March 31, 2021, with the exception of consolidated postretirement benefits associated with reductions in force of approximately $19,260 included in accrued expenses on the accompanying consolidated balance sheet as of March 31, 2021.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Customer Concentration Mar. 31, 2021 Customer Concentration [Abstract] Customer Concentration 19. CUSTOMER CONCENTRATION Trade and other accounts receivable from Boeing represented approximately 23% and 21% of total accounts receivable as of March 31, 2021 and 2020, respectively. Trade and other accounts receivables from Bombardier represented approximately 1% and 16% of total accounts receivable as of March 31, 2021 and 2020, respectively, and include receivables from transition services. The Company had no other significant concentrations of credit risk. Sales to Boeing for fiscal 2021 were $698,372, or 37% of net sales, of which $225,027 and $473,346 were from Systems & Support and Aerospace Structures, respectively. Sales to Boeing for fiscal 2020 were $983,763, or 34% of net sales, of which $254,660 and $729,103 were from Systems & Support and Aerospace Structures, respectively. Sales to Boeing for fiscal 2019 were $1,031,106, or 31% of net sales, of which $243,046 and $788,061 were from Systems & Support and Aerospace Structures, respectively. Sales to Gulfstream for fiscal 2021 were less than 10% of net sales. Sales to Gulfstream for fiscal 2020 were $337,173, or 12% of net sales, of which $3,250 and $333,924 were from Systems & Support and Aerospace Structures, respectively. Sales to Gulfstream for fiscal 2019 were $361,451, or 11% of net sales, of which $3,067 and $358,383 were from Systems & Support and Aerospace Structures, respectively. No other single customer accounted for more than 10% of the Company's net sales; however, the loss of any significant customer, including Boeing and/or Gulfstream, could have a material adverse effect on the Company and its operating subsidiaries. The Company currently generates a majority of its revenue from clients in the commercial aerospace industry, the business jet industry and the military. The Company's growth and financial results are largely dependent on continued demand for its products and services from clients in these industries. When these industries experiences a downturn, it is possible that customers in these sectors may conduct less business with the Company.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Collective Bargaining 12 Months Ended Agreements Mar. 31, 2021 Collective Bargaining Agreements [Abstract] Collective Bargaining Agreements 20. COLLECTIVE BARGAINING AGREEMENTS Approximately 19% of the Company's labor force is covered under collective bargaining agreements. As of March 31, 2021, none of the Company's collectively bargained workforce are working under contracts that have expired, and 16% of the Company’s collectively bargained workforce are working under contracts that are set to expire within one year. During the fiscal year ended March 31, 2020, effects and closure agreements were made for the Tulsa, Oklahoma, and Grand Prairie, Texas, locations. In addition, the Company and leadership of Aero Lodge No.735 of the International Association of Machinists and Aerospace Workers (“IAM”) agreed to negotiate a Memorandum of Agreement to sunset the retiree medical plans. Both the Company and the IAM leadership full endorsed this agreement, and local IAM members voted to ratify it on August 10, 2019.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Segments Mar. 31, 2021 Segment Reporting [Abstract] Segments 21. SEGMENTS The Company reports financial performance based on the following two reportable segments: Systems & Support and Aerospace Structures. The Company’s reportable segments are aligned with how the business is managed, and the Company's views of the markets it serves. The Chief Operating Decision Maker (the "CODM") evaluates performance and allocates resources based upon review of segment information. The CODM utilizes earnings before interest, income taxes, depreciation and amortization, and pension (“Adjusted EBITDAP”) as a primary measure of segment profitability to evaluate performance of its segments and allocate resources. Segment Adjusted EBITDAP is total segment revenue reduced by operating expenses (less depreciation and amortization) identifiable with that segment. Corporate includes general corporate administrative costs and any other costs not identifiable with one of the Company’s segments, including loss on sale of assets and businesses of $104,702 for the year ended March 31, 2021. The Company does not accumulate net sales information by product or service or groups of similar products and services, and therefore the Company does not disclose net sales by product or service because to do so would be impracticable. Selected financial information for each reportable segment is as follows:

Year Ended March 31, 2021 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $1,869,719 $ — $1,056,822 $ 812,897 Intersegment sales (eliminated in consolidation) - (4,653) 3,179 1,474 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 173,197 - 155,693 17,504

Total capital expenditures $ 25,178 $ 1,030 $ 15,239 $ 8,909 Total assets $2,450,935 $ 536,003 $1,469,593 $ 445,339

Year Ended March 31, 2020 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $ 2,900,117 $ — $1,350,761 $1,549,356 Intersegment sales (eliminated in consolidation) — (13,334) 6,803 6,531 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 305,784 — 205,352 100,432

Total capital expenditures $ 39,834 $ 1,502 $ 17,141 $ 21,191 Total assets $2,980,333 $ 481,162 $1,478,679 $1,020,492

Year Ended March 31, 2019 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $3,364,930 $ — $1,309,474 $2,055,456 Intersegment sales (eliminated in consolidation) — (22,485) 15,537 6,948 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 215,418 — 202,346 13,072

Reconciliation of segment profit to income (loss) before income taxes

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Depreciation and amortization (149,904) (3,100) (35,373) (111,431) Interest expense and other, net (114,619) Corporate expenses (74,706) Share-based compensation expense (10,259) Loss on sale of assets and businesses (235,301) Amortization of acquired contract liabilities 67,314 Non-service defined benefit income 56,726 Loss on adoption of ASU 2017-07 (87,241) Income before income taxes (332,572)

Total capital expenditures $ 47,099 $ 784 $ 15,734 $ 30,581

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Subsequent Events Mar. 31, 2021 Subsequent Events [Abstract] Subsequent Events 22. Subsequent Events As disclosed in Note 3, subsequent to March 31, 2021, we completed the sale of our manufacturing operations in Milledgeville, Georgia, Rayong, Thailand, and Red Oak, Texas, receiving net proceeds of approximately $155,000. We intend to use approximately $120,000 of the net proceeds to redeem approximately $112,500 aggregate principal amount of the First Lien Notes at a redemption price of 106.656%, plus accrued and unpaid interest. The redemption is required by the terms of the First Lien Notes, and following the redemption, approximately $587,500 aggregate principal amount of First Lien Notes will remain outstanding. We also expect that in the first quarter of fiscal 2022 we will use available cash to redeem all $236,471 aggregate principal outstanding amount of our 2022 Notes at a redemption price of 100.000%, plus accrued and unpaid interest. Subsequent to this redemption, we will have no material outstanding indebtedness maturing before 2024. In addition, as a result of the completed sale of these manufacturing operations, the Company expects to recognize a curtailment loss in the range of $10,000 to $20,000.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Schedule II - Valuation and 12 Months Ended Qualifying Accounts Mar. 31, 2021 Valuation And Qualifying Accounts [Abstract] Valuation and Qualifying SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS Accounts (in thousands)

Additions Balance at charged beginning to Balance at of (income) end of year expense Other (1) year For year ended March 31, 2021: Deferred tax assets valuation allowance $438,667 114,283 15,223 $568,173 For year ended March 31, 2020: Deferred tax assets valuation allowance $399,013 (3,474) 43,128 $438,667 For year ended March 31, 2019: Deferred tax assets valuation allowance $146,770 93,311 158,932 $399,013

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 12 Months Ended Accounting Policies (Policies) Mar. 31, 2021 Accounting Policies [Abstract] Standards Recently Implemented and Standards Standards Recently Implemented Issued Not Yet Implemented Adoption of ASU 2016-13 In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU modifies the measurement of expected credit losses of certain financial instruments. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The amendments in this ASU should be applied on a modified retrospective basis to all periods presented. The Company adopted ASU 2016-13 effective April 1, 2020, and the impact on its consolidated financial statements was not significant. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. This ASU modifies the disclosure requirements for fair value measurements by removing, modifying or adding certain disclosures. ASU 2018-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The Company adopted ASU 2018-13 effective April 1, 2020, and the adoption did not have a significant impact on its consolidated financial statement disclosures. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans, which modifies the annual disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for annual periods ending after December 15, 2020, with early adoption permitted. The amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company adopted ASU 2018-14 effective April 1, 2020, and the adoption did not have a significant impact on its consolidated financial statement disclosures.

Impact of Change in Accounting Principle

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Effective April 1, 2020, the Company changed its method of accounting for the determination of the market-related value of assets (“MRVA”) for a class of assets (fixed income securities) within the qualified U.S. defined benefit plan (the “Plan”) which is used in determining the expected return on asset component of net periodic benefit income. This class of assets is composed solely of the fixed income securities asset class held in the portfolio for the Plan, which provides a natural hedge (liability-hedging assets) against the changes in the Plan’s liability due to changes in market interest rates. Refer to Note 15 for the Company’s fair value disclosure by asset classification. The Company’s previous method of accounting was to calculate the MRVA for all the Plan’s assets recognizing investment gains and losses into the MRVA over a five-year period. The Company has changed its method of accounting and elected to use the fair value of its fixed income assets, which represent approximately 44% of the Plan’s assets as of the effective date of the change in accounting principle, to determine the MRVA. This change in accounting principle is preferable as it results in an expected return on asset component of net periodic benefit income that more accurately reflects the changes in the fair values of the fixed income securities. No change is being made to the accounting principle for the other classes of pension assets, which represent the remaining 56% of the pension asset portfolio for the Plan. The gains and losses for these other plan assets will continue to be amortized into the MRVA over a five-year period. The change in accounting principle requires retrospective application and prospective disclosure. The Company applied the change effective April 1, 2020, and recorded a cumulative adjustment to equity as of the earliest period presented. The tables below represent the impact of this change on the consolidated statements of operations (including earnings per share) and the consolidated statements of comprehensive loss for the periods presented below. The change in accounting principle had no impact on the consolidated statements of cash flows for these periods. The tables below represent the impact of the change in accounting principle on the consolidated statement of operations and the consolidated statements of comprehensive loss for the year ended March 31, 2021.

Net Loss per share - basic & diluted Basic $ (8.55)$ 0.12 $ (8.67) Diluted $ (8.55)$ 0.12 $ (8.67)

The table below represents the impact of the change in accounting principle on the consolidated balance sheet as of March 31, 2021.

As Reported (With Impact of Without Stockholders' deficit: Change), Change Change,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document March 31, March 31, 2021 2021 Accumulated other comprehensive loss $ (530,192)$ (33,132) (497,060) Accumulated deficit $ (1,254,391)$ 33,132 (1,287,523) Total stockholders' deficit $ (818,853)$ - (818,853)

Cash and Cash Equivalents Cash and Cash Equivalents Cash equivalents consist of highly liquid investments with a maturity of three months or less at the time of purchase. Fair value of cash equivalents approximates carrying value. Trade and Other Receivables, net Trade and Other Receivables, net Trade and other receivables are recorded net of an allowance for expected credit losses. Trade and other receivables include amounts billed and currently due from customers and amounts retained by the customer pending contract completion. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. The Company pools receivables that share underlying risk characteristics and records the allowance for expected credit losses based on a combination of prior experience, current economic conditions and management’s expectations of future economic conditions, and specific collectibility matters when they arise. The Company writes off balances against the allowance for expected credit losses when collectibility is deemed remote. The Company's trade and other receivables are exposed to credit risk; however, the risk is limited due to the diversity of the customer base. For the years ended March 31, 2021 and 2020, credit loss expense and write-offs were immaterial. Trade and other receivables, net composed of the following:

March 31, 2021 2020 Total trade receivables $ 192,888 $ 314,007 Other receivables 9,273 49,773 Total trade and other receivables 202,161 363,780 Less: Allowance for credit losses (8,095) (4,293) Total trade and other receivables, net $ 194,066 $ 359,487 Goodwill and Intangible Goodwill and Intangible Assets Assets The Company accounts for goodwill and intangible assets in accordance with ASC 350, Intangibles—Goodwill and Other. Under ASC 350, goodwill and intangible assets with indefinite lives are not amortized; rather, they are tested for impairment on at least an annual basis. Intangible assets with finite lives are amortized over their useful lives. The Company assesses whether goodwill impairment exists using both the qualitative and quantitative assessments. The qualitative assessment involves determining whether events or circumstances exist that indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. If based on this qualitative assessment the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount or if the Company elects not to perform a qualitative assessment, a quantitative assessment is performed as required by ASC 350 to determine whether a goodwill impairment exists at the reporting unit. The quantitative test is used to compare the carrying amount of the reporting unit's assets to the fair value of the reporting unit. If the fair value exceeds the carrying value, no further evaluation is required, and no impairment loss is recognized. If the carrying amount exceeds the fair value, then an impairment loss occurs. The impairment is measured by using the amount by which the carrying value exceeds the fair value not to exceed the amount of recorded goodwill. The determination of the fair value of its reporting units is based, among other things, on estimates of future operating performance of the reporting unit being valued. The Company is required to complete an

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document impairment test for goodwill and record any resulting impairment losses at least annually. Changes in market conditions, among other factors, may have an impact on these estimates and require interim impairment assessments. When performing the quantitative impairment test, the Company's methodology includes the use of an income approach which discounts future net cash flows to their present value at a rate that reflects the Company's cost of capital, otherwise known as the discounted cash flow method ("DCF"). These estimated fair values are based on estimates of future cash flows of the businesses. Factors affecting these future cash flows include the continued market acceptance of the products and services offered by the businesses, the development of new products and services by the businesses and the underlying cost of development, the future cost structure of the businesses and future technological changes. The Company also incorporates market multiples for comparable companies in determining the fair value of its reporting units. Any such impairment would be recognized in full in the reporting period in which it has been identified. The fair value estimates resulting from the application of these methodologies are based on inputs classified within Level 3 of the fair value hierarchy, as described below. During the fourth quarter of the fiscal year ended March 31, 2021, the Company performed its annual goodwill impairment assessment for each of its reporting units with no impairment identified. In fiscal 2020, at March 31, 2020, the Company identified indicators of impairment due to the decline in the Company’s share price as well as potential negative impacts due to the uncertainty of the impact of the COVID-19 pandemic. As a result of these indicators, the Company performed an interim assessment of goodwill, which included using a combination of both market and income approaches to estimate the fair value of each reporting unit. The Company concluded that its Product Support reporting unit had a fair value that was lower than its carrying value by an amount that exceeded the remaining goodwill for the reporting unit. Therefore, the Company recorded a noncash impairment charge during the fiscal quarter ended March 31, 2020, of $66,121, which is presented on the consolidated statements of operations as “Impairment of goodwill” for the fiscal year ended March 31, 2020. The decline in fair value was the result of expected declines in revenues from MRO services and the uncertainty in the rate and timing of recovery and therefore the timing of associated earnings and cash flows. Finite-lived intangible assets are amortized over their useful lives ranging from 7 to 30 years. The Company continually evaluates whether events or circumstances have occurred that would indicate that the remaining estimated useful lives of long-lived assets, including intangible assets, may warrant revision or that the remaining balance may not be recoverable. Long-lived assets are evaluated for indicators of impairment. When factors indicate that long-lived assets, including intangible assets, should be evaluated for possible impairment, an estimate of the related undiscounted cash flows over the remaining life of the long-lived assets, including intangible assets, is used to measure recoverability based on the primary asset of the asset group. Some of the more important factors management considers include the Company's financial performance relative to expected and historical performance, significant changes in the way the Company manages its operations, negative events that have occurred, and negative industry and economic trends. If the estimated undiscounted cash flows are less than the carrying amount, measurement of the impairment will be based on the difference between the carrying value and fair value of the asset group, generally determined based on the present value of expected future cash flows associated with the use of the asset. As disclosed in Note 3, in May 2020, the Company’s Board of Directors committed to a plan (i) to sell its composites manufacturing operations located in Milledgeville, Georgia, and Rayong, Thailand, and (ii) to transfer the assets and certain liabilities associated with its Gulfstream G650 wing supply chain activities (as disclosed in Note 3, this transaction closed in August 2020). These planned divestitures represent the divestiture

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document of certain assets and liabilities of an operating business within the Aerospace Structures segment that the Company has identified as an asset group pursuant to the provisions of ASC 360, Property, Plant, and Equipment. As a result, as of May 31, 2020, the Company concluded that the planned divestitures represented a significant change in the manner in which the related asset group was expected to be used, and that the asset group therefore needed to be tested for recoverability. The asset group primarily consists of working capital, fixed assets and definite-lived intangible assets. The Company first determined that the relevant long-lived asset group was not recoverable by comparing the undiscounted cash flows expected to be generated by the long-lived asset group to the carrying value of the asset group. As a result, the Company estimated the fair value of the long-lived asset group and concluded that the asset group was impaired. The Company used a multi-period excess earnings approach to estimate the fair value of the long-lived asset group for purposes of testing the asset group for impairment. This method estimates fair value based on the expected future excess earnings stream attributable to the asset group. This method requires the use of several key assumptions, including revenue projections that consider historical and estimated future results, general economic and market conditions, as well as the impact of planned business and operational strategies. A discount rate of 15.0% was applied to the estimated future excess earnings and cash flows in order to estimate the fair value of the asset group as of the measurement date. The Company has determined that the lowest level of the inputs that are significant to the fair value measurement are unobservable inputs that fall within Level 3 of the fair value hierarchy. In accordance with ASC 360, the Company allocated the resulting impairment to the specific long-lived assets within the asset group on a pro rata basis, except that the loss allocated to an individual long-lived asset of the group did not reduce the carrying amount of that asset below its estimated fair value. As a result, the Company recognized a total noncash impairment charge of $252,382 in the first quarter, primarily allocated to definite-lived intangible assets, which is presented as “Impairment of long- lived assets” on the accompanying consolidated statements of operations. In January 2021, the Company’s Board of Directors committed to a plan to sell its manufacturing operations located in Red Oak, Texas. As a result of this decision and the resulting classification of this disposal group as held for sale, the Company fully impaired the remaining customer relationship intangible asset within the Aerospace Structures segment and recognized a noncash impairment charge of $6,696, which has been included in the impairment on the assets held for sale as disclosed in Note 3 and is presented within “Loss on sale of assets and businesses” on the accompanying consolidated statement of operations. See below for the Company's accounting policy regarding fair value measurements and the definition of fair value levels. Revenue Recognition and Contract Balances Revenue Recognition and Contract Balances The Company adopted ASC 606 on April 1, 2018. The Company's revenue is principally from contracts with customers to provide design, development, manufacturing, and support services associated with specific customer programs. The Company regularly enters into long-term master supply agreements that establish general terms and conditions and may define specific program requirements. Many agreements include clauses that provide sole supplier status to the Company for the duration of the program’s life. Purchase orders (or authorizations to proceed) are issued pursuant to the master supply agreements. Additionally, a majority of the Company’s agreements with customers include options for future purchases. Such options primarily reduce the administrative effort of issuing subsequent purchase orders and do not represent material rights granted to customers. The Company generally enters into agreements directly with its customers and is the principal in all current contracts. The identification of a contract with a customer for purposes of accounting and financial reporting requires an evaluation of the terms and conditions of agreements to determine

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document whether presently enforceable rights and obligations exist. Management considers a number of factors when making this evaluation that include, but are not limited to, the nature and substance of the business exchange, the specific contractual terms and conditions, the promised products and services, the termination provisions in the contract, as well as the nature and execution of the customer’s ordering process and how the Company is authorized to perform work. Generally, presently enforceable rights and obligations are not created until a purchase order is issued by a customer for a specified number of units of product or services. Therefore, the issuance of a purchase order is generally the point at which a contract is identified for accounting and financial reporting purposes. Management identifies the promises to the customer. Promises are generally explicitly stated in each contract, but management also evaluates whether any promises are implied based on the terms of the agreement, past business practice, or other facts and circumstances. Each promise is evaluated to determine if it is a performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service. The Company considers a number of factors when determining whether a promise is a distinct performance obligation, including whether the customer can benefit from the good or service on its own or together with other resources that are readily available to the customer, whether the Company provides a significant service of integrating goods or services to deliver a combined output to the customer, or whether the goods or services are highly interdependent. The Company’s performance obligations consist of a wide range of engineering design services and manufactured components, as well as spare parts and repairs for OEMs. The transaction price for a contract reflects the consideration the Company expects to receive for fully satisfying the performance obligations in the contract. Typically, the transaction price consists solely of fixed consideration but may include variable consideration for contractual provisions such as unpriced contract modifications, cost- sharing provisions, and other receipts or payments to customers. The Company identifies and estimates variable consideration, typically at the most likely amount the Company expects to receive from its customers. Variable consideration is only included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized for the contract will not occur, or when the uncertainty associated with the variable consideration is resolved. The Company's contracts with customers generally require payment under normal commercial terms after delivery with payment typically required within 30 to 120 days of delivery. However, a subset of the Company’s current contracts includes significant financing components because the timing of the transfer of the underlying products and services under contract are at the customers’ discretion. For these contracts, the Company adjusts the transaction price to reflect the effects of the time value of money. The Company generally is not subject to collecting sales tax and has made an accounting policy election to exclude from the transaction price any sales and other similar taxes collected from customers. As a result, any such collections are accounted for on a net basis. The total transaction price is allocated to each of the identified performance obligations using the relative stand-alone selling price. The objective of the allocation is to reflect the consideration that the Company expects to receive in exchange for the products or services associated with each performance obligation. Stand-alone selling price is the price at which the Company would sell a promised good or service separately to a customer. Stand-alone selling prices are established at contract inception, and subsequent changes in transaction price are allocated on the same basis as at contract inception. When stand-alone selling prices for the Company’s products and services are not observable, the Company uses either the “Expected Cost Plus a Margin” or "Adjusted Market Assessment" approaches to estimate stand-alone selling price. Expected costs are typically derived from the available periodic forecast information. Revenue is recognized when or as control of promised products or services transfers to a customer and is recognized at the amount allocated to each performance obligation

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document associated with the transferred products or services. Service sales, principally representing repair, maintenance, and engineering activities are recognized over the contractual period or as services are rendered. Sales under long-term contracts with performance obligations satisfied over time are recognized using either an input or output method. The Company recognizes revenue over time as it performs on these contracts because of the continuous transfer of control to the customer as represented by contractual terms that entitle the Company to the reimbursement of costs plus a reasonable profit for work performed to manufacture products for which the Company has no alternate use or for work performed on a customer-owned asset. With control transferring over time, revenue is recognized based on the extent of progress toward completion of the performance obligation. The Company generally uses the cost-to-cost input method of progress for its contracts because it best depicts the transfer of control to the customer that occurs as work progresses. Under the cost-to- cost method, the extent of progress toward completion is measured based on the proportion of costs incurred to date to the total estimated costs at completion of the performance obligation. The Company reviews its cost estimates on contracts on a periodic basis, or when circumstances change and warrant a modification to a previous estimate. Cost estimates are largely based on negotiated or estimated purchase contract terms, historical performance trends and other economic projections. Significant factors that influence these estimates include inflationary trends, technical and schedule risk, internal and subcontractor performance trends, business volume assumptions, asset utilization, and anticipated labor agreements. Revenue and cost estimates are regularly monitored and revised based on changes in circumstances. Impacts from changes in estimates of net sales and cost of sales are recognized on a cumulative catch-up basis, which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a performance obligation’s percentage of completion. Forward loss reserves for anticipated losses on long-term contracts are recorded in full when such losses become evident, to the extent required and are included in contract liabilities on the accompanying consolidated balance sheets. The Company believes that the accounting estimates and assumptions made by management are appropriate given the increased uncertainties surrounding the severity and duration of the impacts of the COVID-19 pandemic, however actual results could differ materially from those estimates. For the fiscal year ended March 31, 2021, cumulative catch-up adjustments resulting from changes in contract values and estimated costs that arose during the fiscal year increased revenue and decreased operating loss, net loss, and loss per share by approximately $4,796, $12,332, $12,332, and $0.23, respectively. The cumulative catch- up adjustments to operating income for the fiscal year ended March 31, 2021, included gross favorable adjustments of approximately $55,180 and gross unfavorable adjustments of approximately $42,848. For the fiscal year ended March 31, 2020, cumulative catch-up adjustments resulting from changes in estimates increased net sales, operating loss, net loss and loss per share by approximately $12,011, ($22,844), ($22,844), and ($0.45), respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2020, included gross favorable adjustments of approximately $43,405 and gross unfavorable adjustments of approximately $66,249. For the fiscal year ended March 31, 2019, cumulative catch-up adjustments resulting from changes in estimates decreased operating loss, net loss and decreased loss per share by approximately ($68,694), ($68,694), and ($1.38), respectively. The cumulative catch-up adjustments to operating income for the fiscal year ended March 31, 2019, included gross favorable adjustments of approximately $46,074 and gross unfavorable adjustments of approximately $114,768. These cumulative catch-up adjustments do not include a noncash charge the Company recorded as a result of the adoption of ASU 2017-07 of $87,241 due to a change in estimate from a change in accounting principles, which is presented on the accompanying consolidated statements of operations within cost of sales.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenues for performance obligations that are not recognized over time are recognized at the point in time when control transfers to the customer. For performance obligations that are satisfied at a point in time, the Company evaluates the point in time when the customer can direct the use of and obtain the benefits from the products and services. Generally, the shipping terms determine the point in time when control transfers to customers. Shipping and handling activities are not considered performance obligations and related costs are included in cost of sales as incurred. Differences in the timing of revenue recognition and contractual billing and payment terms result in the recognition contract assets and liabilities. Refer to Note 4 for further discussion. In connection with several of prior acquisitions, the Company assumed existing long- term contracts. Based on review of these contracts at the acquisition date, the Company concluded that the terms of certain contracts were either more or less favorable than could be realized in market transactions as of the date of the acquisition. As a result, the Company recognized acquired contract liabilities, net of acquired contract assets as of the acquisition date of each respective acquisition, based on the present value of the difference between the contractual cash flows of the executory contracts and the estimated cash flows had the contracts been executed at the acquisition date. The liabilities principally relate to long-term contracts that were initially executed several years prior to the respective acquisition. The Company measured these net liabilities in the year they were acquired under the measurement provisions of ASC 820, Fair Value Measurement, which is based on the price to transfer the obligation to a market participant at the measurement date, assuming that the net liabilities will remain outstanding in the marketplace. The portion of the Company's revenue resulting from transactions other than contracts with customers pertains to the amortization of these acquired contract liabilities as the related contractual performance obligations are satisfied. Adjustments to these liabilities due to significant changes in the total estimated costs of the contract are accounted for in a manner consistent with other loss contract reserves, with such adjustments recognized in cost of sales. The balance of the liability as of March 31, 2021, is $43,888 and, based on the expected delivery schedule of the underlying contracts, the Company estimates annual amortization of the liability as follows: 2022 — $22,897; 2023 — $3,347; 2024 — $2,501; 2025 — $2,564; 2026 — $1,282; thereafter $11,296.

Leases Leases The Company leases office space, manufacturing facilities, land, vehicles, and equipment. The Company determines if an agreement is or contains a lease at the lease inception date and recognizes right-of-use assets (“ROU”) and lease liabilities at the lease commencement date. A ROU asset and corresponding lease liability are not recorded for leases with an initial term of 12 months or less (“short-term leases”). ROU assets represent the Company's right to use an underlying asset during the lease term, and lease liabilities represent the Company's obligation to make lease payments arising from the lease. The determination of the length of lease terms is affected by options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. The existence of significant economic incentive is the primary consideration when assessing whether the Company is reasonably certain of exercising an option in a lease. Both finance and operating lease ROU assets and liabilities are recognized at commencement date and measured as the present value of lease payments to be made over the lease term. As the interest rate implicit in the lease is not readily available for most of the Company's leases, the Company uses its estimated incremental borrowing rate in determining the present value of lease payments. The estimated incremental borrowing rate is derived from information available at the lease commencement date. The lease ROU asset recognized at commencement is adjusted for any lease payments related to initial direct costs, prepayments, and lease incentives.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, lease expense comprises the amortization of the ROU assets recognized on a straight-line basis generally over the shorter of the lease term or the estimated useful life of the underlying asset and interest on the lease liability. Variable lease payments not dependent on a rate or index are recognized when the event, activity, or circumstance in the lease agreement upon which those payments are contingent is probable of occurring and are presented in the same line of the consolidated balance sheet as the rent expense arising from fixed payments. The Company has lease agreements with lease and non-lease components. Non-lease components are combined with the related lease components and accounted for as lease components for all classes of underlying assets. Retirement Benefits Retirement Benefits Defined benefit pension plans are recognized in the consolidated financial statements on an actuarial basis. A significant element in determining the Company's pension income (expense) is the expected long-term rate of return on plan assets. This expected return is an assumption as to the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the projected pension benefit obligation. The Company applies this assumed long-term rate of return to a calculated value of plan assets, which recognizes changes in the fair value of plan assets in a systematic manner over five years. This produces the expected return on plan assets that is included in pension income (expense). The difference between this expected return and the actual return on plan assets is deferred. The net deferral of past asset gains (losses) affects the calculated value of plan assets and, ultimately, future pension income (expense). The Company periodically experiences events or makes changes to its benefit plans that result in curtailment or special charges. Curtailments are recognized when events occur that significantly reduce the expected years of future service of present employees or eliminates the benefits for a significant number of employees for some or all of their future service. Curtailment losses are recognized when it is probable the curtailment will occur and the effects are reasonably estimable. Curtailment gains are recognized when the related employees are terminated or a plan amendment is adopted, whichever is applicable. From time to time, the Company may enter into transactions that relieve it of primary responsibility for all or more than a minor portion of certain of its pension benefit obligations. When these transactions are effected through an irrevocable action that relieves the Company of primary responsibility for its pension or other postretirement benefit obligations and eliminates significant risks related to the obligation and the related assets used to effect the transaction, they are considered settlements, as defined by ASC 715, Compensation – Retirement Benefits. When a transaction meets the definition of a settlement, at the time of settlement the Company recognizes as a gain or loss the pro rata amount of the net gain or loss in accumulated other comprehensive income based on the proportion of the projected benefit obligation settled to the total projected benefit obligation. As required under ASC 715, the Company remeasures plan assets and obligations during an interim period whenever a significant event occurs that results in a material change in the net periodic pension cost. The determination of significance is based on judgment and consideration of events and circumstances impacting the pension costs. At March 31 of each year, the Company determines the fair value of its pension plan assets as well as the discount rate to be used to calculate the present value of plan liabilities. The discount rate is an estimate of the interest rate at which the pension benefits could be effectively settled. In estimating the discount rate, the Company looks to rates of return on high-quality, fixed-income investments currently available and expected to be available during the period to maturity of the pension benefits. The

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Company uses a portfolio of fixed-income securities, which receive at least the second- highest rating given by a recognized ratings agency. Fair Value Measurements Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. When determining fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and also considers assumptions that market participants would use when pricing an asset or liability. The fair value hierarchy has three levels of inputs that may be used to measure fair value: Level 1—Unadjusted quoted prices in active markets for identical assets or liabilities; Level 2—Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability; and Level 3—Unobservable inputs for the asset or liability. The Company has applied fair value measurements when measuring the impairment of assets held for sale (see Note 3), when measuring long-lived asset impairment in the current period (see above within the disclosure of the Company’s goodwill and intangible asset accounting policies), and to its pension and postretirement plan assets (see Note 15). Income Taxes Income Taxes The Company accounts for income taxes using the asset and liability method. The asset and liability method requires recognition of deferred tax assets and liabilities for expected future tax consequences of temporary differences that currently exist between tax bases and financial reporting bases of the Company's assets and liabilities. A valuation allowance is provided on deferred taxes if it is determined that it is more likely than not that the asset will not be realized. Management judgment is required to determine the amount of benefit to be recognized in relation to an uncertain tax position. The Company uses a two-step process to evaluate tax positions. The first step requires an entity to determine whether it is more likely than not (greater than 50% chance) that the tax position will be sustained. The second step requires an entity to recognize in the financial statements the benefit of a tax position that meets the more-likely-than-not recognition criterion. The amounts ultimately paid upon resolution of issues raised by taxing authorities may differ materially from the amounts accrued and may materially impact the financial statements of the Company in future periods. The Company recognizes penalties and interest accrued related to income tax liabilities in the provision for income taxes on its consolidated statements of operations. Supplemental Cash Flow Information Supplemental Cash Flow Information For the fiscal year ended March 31, 2021, the Company paid $2,297 for income taxes, net of income tax refunds received. For the fiscal year ended March 31, 2020, the Company paid $4,005 for income taxes, net of income tax refunds received. For the fiscal year ended March 31, 2019, the Company received $4,701 as income tax refunds, net of tax paid.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Background and Basis of 12 Months Ended Presentation (Tables) Mar. 31, 2021 Change in Accounting Principle [Member] Schedule of Impact of Change in The tables below represent the impact of the change in accounting principle on the Accounting Principle on consolidated statement of operations and the consolidated statements of Consolidated Financial Statements comprehensive loss for the year ended March 31, 2021.

Year Ended March 31, 2021 As Reported Impact of Without (With Change) Change Change Non-service defined benefit income $ (49,519)$ (6,112)$ (43,407) Loss before income taxes (448,029) 6,112 (454,141) Income tax expense 2,881 - 2,881 Net loss $ (450,910)$ 6,112 $ (457,022)

Net Loss per share - basic & diluted Basic $ (8.55)$ 0.12 $ (8.67) Diluted $ (8.55)$ 0.12 $ (8.67)

The table below represents the impact of the change in accounting principle on the consolidated balance sheet as of March 31, 2021.

Without As Reported Change, (With Change), Impact of March 31, Stockholders' deficit: March 31, 2021 Change 2021 Accumulated other comprehensive loss $ (530,192)$ (33,132) (497,060) Accumulated deficit $ (1,254,391)$ 33,132 (1,287,523) Total stockholders' deficit $ (818,853)$ - (818,853)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant 12 Months Ended Accounting Policies (Tables) Mar. 31, 2021 Accounting Policies [Abstract] Summary of Trade and Other Receivables Net Trade and other receivables, net composed of the following:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and 12 Months Ended Contracts with Customers Mar. 31, 2021 (Tables) Change In Contract With Customer Asset And Liability [Abstract] Disaggregation of Revenue The following table shows disaggregated net sales satisfied overtime and at a point in time (excluding intercompany sales) for the years ended March 31, 2021 and 2020:

Aerospace Structures Satisfied over time $ 746,545 $ 1,378,866 Satisfied at a point in time 42,850 129,690 Revenue from contracts with customers 789,395 1,508,556 Amortization of acquired contract liabilities 23,502 40,800 Total revenue 812,897 1,549,356 $ 1,869,719 $ 2,900,117 The following table shows disaggregated net sales by end market (excluding intercompany sales) for the years ended March 31, 2021 and 2020:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Contract Assets Contract balances are classified as assets or liabilities on a contract-by-contract basis at and Liabilities Balances the end of each reporting period. The following table summarizes the Company’s contract assets and liabilities balances:

March 31, March 31, 2021 2020 Change Contract assets $ 139,937 $ 267,079 $ (127,142) Contract liabilities (305,116) (386,585) 81,469 Net contract liability $ (165,179) $ (119,506) $ (45,673)

Schedule of Performance As of March 31, 2021, the Company has the following unsatisfied, or partially Obligations that are Expected unsatisfied, performance obligations that are expected to be recognized in the future as to Be Recognized in Future noted in the table below. The Company expects options to be exercised in addition to the amounts presented below.

More Less than than 5 Total 1 year 1-3 years 4-5 years years Unsatisfied performance obligations $2,273,527 $1,251,209 $961,332 $60,889 $ 97

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Inventories (Tables) Mar. 31, 2021 Inventory Disclosure [Abstract] Schedule of components of The components of inventories are as follows: inventories March 31, 2021 2020 Raw materials $ 45,211 $ 32,552 Work-in-process, including manufactured and purchased components 277,729 312,953 Finished goods 51,221 50,011 Rotable assets 26,205 57,460 Total inventories $ 400,366 $ 452,976

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Property and Equipment 12 Months Ended (Tables) Mar. 31, 2021 Property Plant And Equipment [Abstract] Schedule of Net Property and Equipment Net property and equipment is:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Goodwill and Other 12 Months Ended Intangible Assets (Tables) Mar. 31, 2021 Goodwill And Intangible Assets Disclosure [Abstract] Schedule of Changes in the Carrying The following is a summary of the changes in the carrying value of goodwill Value of Goodwill by Reportable by reportable segment, for the fiscal years ended March 31, 2021 and 2020: Segment Systems & Support March 31, 2020 $513,527 Effect of exchange rate changes 8,111 March 31, 2021 $521,638

Systems & Support March 31, 2019 $583,225 Effect of exchange rate changes (3,577) Impairment of goodwill (66,121) March 31, 2020 $513,527

Schedule of Components of Intangible The components of intangible assets, net are as follows: Assets March 31, 2021 Weighted- Average Life Gross Carrying Accumulated (in Years) Amount Amortization Net Customer relationships 17.9 $ 170,198 $ (74,253) $ 95,945 Product rights, technology and licenses 11.4 55,050 (48,645) 6,405 Other 30.0 300 (197) 103 Total intangibles, net $ 225,548 $ (123,095) $102,453

March 31, 2020 Weighted- Average Life Gross Carrying Accumulated (in Years) Amount Amortization Net Customer relationships 17.7 $ 550,131 $ (276,980) $273,151 Product rights, technology and licenses 11.4 54,676 (46,180) 8,496 Noncompete agreements and other 16.7 2,656 (1,208) 1,448 Tradenames 10.0 150,000 (51,127) 98,873 Total intangibles, net $ 757,463 $ (375,495) $381,968

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Accrued Expenses (Tables) Mar. 31, 2021 Accrued Liabilities Current And Noncurrent [Abstract] Schedule of Accrued Expenses Accrued expenses consist of the following items:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Leases (Tables) Mar. 31, 2021 Leases [Abstract] Schedule of Components Lease Expense The components of lease expense for the year ended March 31, 2021, are disclosed in the table below.

Year Ended March 31, Financial Statement Lease Cost Classification 2021 2020 Operating lease cost Cost of sales or Selling, general and administrative expense $ 22,976 $ 24,539 Variable lease cost Cost of sales or Selling, general and administrative expense 9,344 8,382 Financing Lease Cost: Amortization of right-of- Depreciation and use assets amortization 4,673 5,317 Interest on lease liability Interest expense and other 1,580 2,307 Total lease cost (1) $ 38,573 $ 40,545

(1) Total lease cost does not include short-term leases or sublease income, both of which are immaterial. Schedule of Supplemental Cash Flow Supplemental cash flow information for the years ended March 31, 2021 Information and 2020, is disclosed in the table below.

2021 2020 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used in operating leases $ 21,008 $ 21,430 Operating cash flows used in finance leases 1,583 2,327 Financing cash flows used in finance leases 7,774 8,370 ROU assets obtained in exchange for lease liabilities Operating leases 6,547 3,826 Finance leases $ 2,909 $ 1,039 Schedule of Supplemental Balance Sheet Supplemental balance sheet information related to leases as of March 31, Information Related to Leases 2021 and 2020, is disclosed in the table below.

March 31, Leases Classification 2021 2020 Assets Operating lease ROU Other, net assets Assets held for sale $ 46,643 $ 61,461

Finance lease ROU Property and assets, cost equipment, net Assets held for sale 44,128 39,461 Accumulated Property and amortization equipment, net (23,344) (18,650)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Assets held for sale Finance lease ROU assets, net 20,784 20,811 Total lease assets $ 67,427 $ 82,272

Liabilities Current Operating Accrued expenses Liabilities related to assets held for sale $ 12,885 $ 13,139 Finance Current portion of long-term debt Liabilities related to assets held for sale 5,972 7,336 Noncurrent Operating Other noncurrent liabilities Liabilities related to assets held for sale 42,385 54,687 Finance Long-term debt, less current portion Liabilities related to assets held for sale 14,878 16,597 Total lease liabilities $ 76,120 $ 91,759 Schedule of Information Related to Lease Information related to lease terms and discount rates as of March 31, Terms and Discount Rates 2021 and 2020, is disclosed in the table below.

2021 2020 Weighted average remaining lease term (years) Operating leases 7.3 7.2 Finance leases 6.9 6.9

Weighted average discount rate Operating leases 6.3% 6.2% Finance leases 6.8% 5.9% Schedule of Maturity of Lease Liabilities The maturity of the Company's lease liabilities as of March 31, 2021, is disclosed in the table below.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Long-term Debt (Tables) Mar. 31, 2021 Debt Disclosure [Abstract] Schedule of Long-term Debt Long-term debt consists of the following: Instruments March 31, 2021 2020 Revolving credit facility $ — $ 400,000 Receivable securitization facility — 75,000 Finance leases 20,125 23,933 Senior secured first lien notes due 2024 700,000 — Senior secured notes due 2024 525,000 525,000 Senior notes due 2022 236,471 300,000 Senior notes due 2025 500,000 500,000 Less: debt issuance costs (24,053) (16,426) 1,957,543 1,807,507 Less: current portion 5,247 7,336 $ 1,952,296 $ 1,800,171

Schedule of Carrying Amounts and Carrying amounts and the related estimated fair values of the Company's long-term Estimated Fair Values of Long- debt not recorded at fair value in the accompanying consolidated financial term Debt statements are as follows:

March 31, 2021 March 31, 2020 Carrying Fair Carrying Fair Value Value Value Value $ 1,957,543 $ 2,085,204 $ 1,807,507 $ 1,559,455

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Other Noncurrent Liabilities 12 Months Ended (Tables) Mar. 31, 2021 Other Liabilities Noncurrent [Abstract] Schedule of Other Noncurrent Liabilities March 31, 2021 2020 Acquired contract liabilities, net $ 43,888 $ 92,962 Accrued warranties 9,519 31,036 Accrued workers' compensation 11,226 13,603 Noncurrent contract liabilities 100,737 91,265 Operating lease liabilities 26,060 54,687 Environmental contingencies 9,185 18,060 Income tax reserves 300 594 All other 6,463 3,962 Total other noncurrent liabilities $207,378 $306,169

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Income Taxes (Tables) Mar. 31, 2021 Income Tax Disclosure [Abstract] Components of Loss from Continuing The components of loss from continuing operations before income taxes Operations before Income Taxes are as follows:

Year ended March 31, 2021 2020 2019 Foreign $ (1,518) $ 33,399 $ (18,336) Domestic (446,511) (57,034) (314,236) $(448,029) $(23,635) $(332,572)

Components of Income Tax (Benefit) The components of income tax (benefit) expense are as follows: Expense Year ended March 31, 2021 2020 2019 Current: Federal $ — $ (654) $ (1,253) State (315) 27 431 Foreign 3,372 3,602 3,335 3,057 2,975 2,513 Deferred: Federal — 2,748 (9,076) State — 73 1,593 Foreign (176) 2 (456) (176) 2,823 (7,939) $ 2,881 $ 5,798 $ (5,426)

Schedule of Reconciliation of Statutory A reconciliation of the statutory federal income tax rate to the effective tax Federal Income Tax Rate to Effective Tax rate is as follows: Rate Year ended March 31, 2021 2020 2019 Statutory federal income tax rate 21.0% 21.0% 21.0% State and local income taxes, net of federal tax benefit 2.7 (12.1) 4.6 Goodwill impairment — (37.4) — Disposition of business — — 3.2 Miscellaneous permanent items and nondeductible accruals (0.7) 3.9 (1.2) Research and development tax credit 0.7 30.4 3.3 Foreign tax credits (0.3) (24.1) (0.7) Valuation allowance (25.5) 29.3 (28.6) Tax reform and CARES Act — (12.3) 0.4 Global Intangible Low-Taxed Income — (20.4) (1.3) Other (including foreign rate differential and FIN 48) 1.4 (2.8) 0.9 Effective income tax rate (0.7)% (24.5)% 1.6%

Components of Deferred Tax Assets and The components of deferred tax assets and liabilities are as follows: Liabilities March 31,

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 2021 2020 Deferred tax assets: Net operating loss and other credit carryforwards $ 345,071 $ 318,341 Inventory 21,484 17,521 Accruals and reserves 34,379 40,492 Interest carryforward 62,893 38,383 Pension and other postretirement benefits 89,952 152,048 Lease right-of-use assets 6,890 11,495 Prepaid expenses and other — 241 Acquired contract liabilities, net 7,504 21,771 568,173 600,292 Valuation allowance (512,554) (438,667) Net deferred tax assets 55,619 161,625 Deferred tax liabilities: Deferred revenue 22,342 38,458 Property and equipment 12,581 34,939 Goodwill and other intangible assets 21,701 80,740 Lease liabilities 5,848 14,928 Prepaid expenses and other 588 — 63,060 169,065 Net deferred tax liabilities $ 7,441 $ 7,440

Schedule of Reconciliation of Liability for A reconciliation of the liability for uncertain tax positions, which are included Uncertain Tax Positions in deferred taxes for the fiscal years ended March 31, 2021 and 2020, follows:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Stockholders' Deficit 12 Months Ended (Tables) Mar. 31, 2021 Equity [Abstract] Schedule of Changes in Accumulated Changes in accumulated other comprehensive loss ("AOCI") by component for Other Comprehensive Loss the years ended March 31, 2021 and 2020, were as follows:

(1) Net of tax. (2) Includes amortization of actuarial losses and recognized prior service (credits) costs, which are included in the net periodic pension cost

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Loss per Share (Tables) Mar. 31, 2021 Earnings Per Share [Abstract] Summary of Reconciliation between Weighted-average Common Shares Year ended March 31, 2021 2020 2019 Outstanding used in Calculation of Basis and (thousands) Diluted Loss Per Share Weighted average common shares outstanding—basic 52,739 50,494 49,698 Net effect of dilutive stock options and non-vested stock(1) — — — Weighted average common shares outstanding—diluted 52,739 50,494 49,698

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans 12 Months Ended (Tables) Mar. 31, 2021 Compensation And Retirement Disclosure [Abstract] Schedule of Consolidated The following table sets forth the Company's consolidated defined benefit pension plans Defined Benefit Pension Plans for its union and non-union employees as of March 31, 2021 and 2020, and the amounts recorded on the consolidated balance sheets at March 31, 2021 and 2020. Company contributions include amounts contributed directly to plan assets and indirectly as benefits paid from the Company's assets. Benefit payments reflect the total benefits paid from the plans and the Company's assets. Information on the plans includes both the domestic qualified and nonqualified plans and the foreign qualified plans.

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Participant contributions 164 204 — 252 Divestitures — (55,354) — — Company contributions 41,201 51,372 2,182 8,319 Benefits paid (179,956) (156,084) (2,182) (8,571) Currency translation adjustment 6,117 (2,756) — — Fair value of plan assets at end of year $1,853,963 $1,598,045 $ — $ — Funded status (underfunded) Funded status $ (376,285) $ (656,940) $ (4,924) $ (7,150) Reconciliation of amounts recognized on the consolidated balance sheets Pension asset—noncurrent $ 7,515 $ 1,503 $ — $ — Accrued benefit liability—current (1,097) (753) (3,372) (4,775) Accrued benefit liability—noncurrent (382,703) (657,690) (1,552) (2,375) Net amount recognized $ (376,285) $ (656,940) $ (4,924) $ (7,150) Reconciliation of amounts recognized in accumulated other comprehensive income Prior service credits $ 4,621 $ 5,595 $ (54,109) $ (59,214) Actuarial losses (gains) 755,234 953,913 (53,542) (58,151) Income tax (benefits) expenses related to above items (204,594) (204,594) 42,016 42,016 Unamortized benefit plan costs (gains) $ 555,261 $ 754,914 $ (65,635) $ (75,349)

Schedule of Components of The components of net periodic benefit cost for fiscal years ended March 31, 2021, Net Periodic Benefit Cost 2020, and 2019, are as follows:

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Assumptions used to determine net periodic pension cost Discount rate 2.47 - 2.54 - 2.65 - 2.68 - 3.32% 3.88% 4.01% 3.00% 3.77% 3.93% Expected long- term rate of return on plan 5.00 - 5.00 - 5.00 - assets 8.00% 8.00% 8.00% N/A N/A N/A Rate of compensation 3.50 - 3.50 - 3.50 - increase 4.50% 4.50% 4.50% N/A N/A N/A Schedule of Estimated Future The total estimated future benefit payments for the pension plans are expected to be Benefit Payments from Plan paid from the plan assets and company funds. The OPEB payments reflect the Assets Company's portion of the funding. Estimated future benefit payments from plan assets and Company funds for the next ten years are as follows:

Other Pension Postretirement Year Benefits Benefits* 2022 $ 192,745 $ 3,375 2023 163,947 169 2024 163,676 161 2025 156,660 153 2026 154,324 143 2027 - 2031 705,477 585

Schedule of Allocation of Plan The table below sets forth the Company's target asset allocation for fiscal 2021 and the Assets actual asset allocations at March 31, 2021 and 2020.

The tables below provide the fair values of the Company's plan assets at March 31, 2021 and 2020, by asset category. The table also identifies the level of inputs used to determine the fair value of assets in each category (refer to Note 2 for definition of levels).

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Corporate bonds — 12,231 — 12,231 Government securities — 103,853 — 103,853 U.S. commingled fund 509,760 — — 509,760 Other Insurance contracts — — 9,813 9,813 Total investment in securities—assets $1,304,228 $ 116,084 $ 9,813 $1,430,125 U.S. equity commingled fund 17,289 International equity commingled fund 158,447 U.S. fixed income commingled fund 59,203 International fixed income commingled fund 1,599 Government securities commingled fund 24,384 Private equity and infrastructure 95,880 Other 1,549 Total investment measured at NAV as a practical expedient $ 358,351 Receivables 67,378 Payables (1,892) Total plan assets $1,853,962

March 31, 2020 Level 1 Level 2 Level 3 Total Assets Cash and cash equivalents $ 35,110 $ — $ — $ 35,110 Equity securities International 155,389 — — 155,389 U.S. equity 2 — — 2 U.S. commingled fund 400,131 — — 400,131 International commingled fund 34,014 — — 34,014 Fixed income securities Corporate bonds — 23,672 — 23,672 Government securities — 93,677 — 93,677 U.S. commingled fund 605,487 — — 605,487 Other Insurance contracts — — 910 910 Total investment in securities—assets $1,230,133 $117,349 $ 910 $1,348,392 U.S. equity commingled fund 8,180 International equity commingled fund 67,101 U.S. fixed income commingled fund 73,838 International fixed income commingled fund 1,380 Government securities commingled fund 8,333 Private equity and infrastructure 89,797 Other 1,534 Total investment measured at NAV as a practical expedient $ 250,163 Receivables 3,292 Payables (3,802)

Schedule of Effect of Twenty The effect of a 25 basis-point change in discount rates as of March 31, 2021, is shown Five Basis-Point Change in below: Discount Rates Other Pension Postretirement Benefits Benefits Increase of 25 basis points Obligation *$ (52,031) $ (33) Net periodic expense 586 4 Decrease of 25 basis points Obligation *$ 54,288 $ 34 Net periodic expense (707) 4

* Excludes impact to plan assets due to the LDI investment approach discussed above under "Plan Assets, Investment Policy and Strategy."

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Stock Compensation Plans 12 Months Ended (Tables) Mar. 31, 2021 Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Summary of Status of Non-Vested A summary of the status of the Company's non-vested shares/units of restricted Shares/Units of Restricted Stock stock and deferred stock units as of March 31, 2021, and changes during the fiscal and Deferred Stock Units year ended March 31, 2021, is presented below. Weighted- Average Grant Date Fair Shares Value Non-vested restricted awards and deferred stock units at March 31, 2020 1,159,630 $ 24.40 Granted 1,154,181 11.35 Vested (396,847) 20.25 Forfeited (218,205) 17.58 Non-vested restricted awards and deferred stock units at March 31, 2021 1,698,759 $ 15.46

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Segments (Tables) Mar. 31, 2021 Segment Reporting [Abstract] Schedule of Selected Financial Information Selected financial information for each reportable segment is as follows: for Each Reportable Segment and Reconciliation of EBITDAP to Operating Year Ended March 31, 2021 Income Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $1,869,719 $ — $1,056,822 $ 812,897 Intersegment sales (eliminated in consolidation) - (4,653) 3,179 1,474 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 173,197 - 155,693 17,504

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Impairment of rotable inventory (23,689) Impairment of long-lived assets (252,382) Income before income taxes (448,029)

Total capital expenditures $ 25,178 $ 1,030 $ 15,239 $ 8,909 Total assets $2,450,935 $ 536,003 $1,469,593 $ 445,339

Year Ended March 31, 2020 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $ 2,900,117 $ — $1,350,761 $1,549,356 Intersegment sales (eliminated in consolidation) — (13,334) 6,803 6,531 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 305,784 — 205,352 100,432

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document benefit income Union represented employee incentives (7,071) Legal judgment gain, net 9,257 Impairment of goodwill (66,121) Income before income taxes (23,635)

Total capital expenditures $ 39,834 $ 1,502 $ 17,141 $ 21,191 Total assets $2,980,333 $ 481,162 $1,478,679 $1,020,492

Year Ended March 31, 2019 Corporate & Systems & Aerospace Total Eliminations Support Structures Net sales to external customers $3,364,930 $ — $1,309,474 $2,055,456 Intersegment sales (eliminated in consolidation) — (22,485) 15,537 6,948 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 215,418 — 202,346 13,072

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document contract liabilities Non-service defined benefit income 56,726 Loss on adoption of ASU 2017-07 (87,241) Income before income taxes (332,572)

Total capital expenditures $ 47,099 $ 784 $ 15,734 $ 30,581

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Schedule II - Valuation and 12 Months Ended Qualifying Accounts (Tables) Mar. 31, 2021 Valuation And Qualifying Accounts [Abstract] Schedule of Valuation and Additions Balance at charged Qualifying Accounts beginning to Balance at of (income) end of year expense Other (1) year For year ended March 31, 2021: Deferred tax assets valuation allowance $438,667 114,283 15,223 $568,173 For year ended March 31, 2020: Deferred tax assets valuation allowance $399,013 (3,474) 43,128 $438,667 For year ended March 31, 2019: Deferred tax assets valuation allowance $146,770 93,311 158,932 $399,013

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Background and Basis of 12 Months Ended Presentation - Additional Mar. 31, 2021 Information (Details) Segment Background And Basis Of Presentation [Line Items] Number of reportable segments 2 Defined benefit plan percentage of fair value of investments of other pension assets 56.00% Amortization period of gains and losses on other plan assets to be amortized into earnings 5 years Change in Accounting Principle [Member] Background And Basis Of Presentation [Line Items] Defined benefit plan percentage of fair value of investments of fixed income assets 44.00% ASU 2016-13 [Member] Background And Basis Of Presentation [Line Items] Change in accounting principle, accounting standards update, adopted [true false] true Change in accounting principle, accounting standards update, adoption date Apr. 01, 2020 Change in accounting principle, accounting standards update, immaterial effect [true false] true ASU 2018-13 [Member] Background And Basis Of Presentation [Line Items] Change in accounting principle, accounting standards update, adopted [true false] true Change in accounting principle, accounting standards update, adoption date Apr. 01, 2020 Change in accounting principle, accounting standards update, immaterial effect [true false] true ASU 2018-14 [Member] Background And Basis Of Presentation [Line Items] Change in accounting principle, accounting standards update, adopted [true false] true Change in accounting principle, accounting standards update, adoption date Apr. 01, 2020 Change in accounting principle, accounting standards update, immaterial effect [true false] true ASU 2019-12 [Member] Background And Basis Of Presentation [Line Items] Change in accounting principle, accounting standards update, adopted [true false] false Change in accounting principle, accounting standards update, adoption date Apr. 01, 2021

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Background and Basis of 12 Months Ended Presentation -Schedule of Impact of Change in Accounting Principle on Consolidated Statement of Operations and Mar. 31, Mar. 31, Mar. 31, Consolidated Statements of 2021 2020 2019 Comprehensive Loss (Details) - USD ($) $ / shares in Units, $ in Thousands New Accounting Pronouncements Or Change In Accounting Principle [Line Items] Non-service defined benefit income $ (49,519) $ (40,587) $ (56,726) Loss before income taxes (448,029) (23,635) (332,572) Income tax expense (benefit) 2,881 5,798 (5,426) Net loss $ (450,910) $ (29,433) $ (327,146) Net Loss per share - basic & diluted Basic $ (8.55) $ (0.58) $ (6.58) Diluted $ (8.55) $ (0.58) $ (6.58) Defined benefit pension plans and other postretirement benefits: Total defined benefit pension plans and other postretirement benefits, net $ 191,054 $ (213,825) $ (123,260) of taxes Total other comprehensive income 216,256 (230,437) (114,435) Comprehensive loss (234,654) $ (259,870) $ (441,581) Reported without Change [Member] New Accounting Pronouncements Or Change In Accounting Principle [Line Items] Non-service defined benefit income (43,407) Loss before income taxes (454,141) Income tax expense (benefit) 2,881 Net loss $ (457,022) Net Loss per share - basic & diluted Basic $ (8.67) Diluted $ (8.67) Defined benefit pension plans and other postretirement benefits: Total defined benefit pension plans and other postretirement benefits, net $ 197,166 of taxes Total other comprehensive income 222,368 Comprehensive loss (234,654) Impact of Change [Member] New Accounting Pronouncements Or Change In Accounting Principle [Line Items] Non-service defined benefit income (6,112) Loss before income taxes 6,112

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Net loss $ 6,112 Net Loss per share - basic & diluted Basic $ 0.12 Diluted $ 0.12 Defined benefit pension plans and other postretirement benefits: Total defined benefit pension plans and other postretirement benefits, net $ (6,112) of taxes Total other comprehensive income $ (6,112)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Background and Basis of Presentation -Schedule of Impact of Change in Accounting Principle on Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019Mar. 31, 2018 Consolidated Balance Sheet (Details) - USD ($) $ in Thousands Stockholders' deficit: Accumulated other comprehensive loss $ (530,192) $ (746,448) Accumulated deficit (1,254,391) (803,481) Total stockholders' deficit (818,853) $ (781,264) $ (573,313) $ 450,534 Reported without Change [Member] Stockholders' deficit: Accumulated other comprehensive loss (497,060) Accumulated deficit (1,287,523) Total stockholders' deficit (818,853) Impact of Change [Member] Stockholders' deficit: Accumulated other comprehensive loss (33,132) Accumulated deficit $ 33,132

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Summary of Significant Accounting Policies - Summary of Trade and Mar. 31, 2021Mar. 31, 2020 Other Receivables Net (Details) - USD ($) $ in Thousands Accounting Policies [Abstract] Total trade receivables $ 192,888 $ 314,007 Other receivables 9,273 49,773 Total trade and other receivables 202,161 363,780 Less: Allowance for credit losses (8,095) (4,293) Total trade and other receivables, net $ 194,066 $ 359,487

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 1 Summary of Significant 3 Months Months 12 Months Ended Accounting Policies - Ended Ended Additional Information Jan. 31, Mar. 31, Mar. 31, Mar. 31, Mar. 31, (Details) - USD ($) 2021 2020 2021 2020 2019 Change In Accounting Estimate [Line Items] Impairment of goodwill $ $ 66,121,000 66,121,000 Discount rate used to estimate fair value of asset 15.00% group Impairment of long-lived assets and goodwill $ $ 66,121,000 6,696,000 252,382,000 Change in accounting estimate 4,796,000 Acquired contract liabilities, net $ 43,888,000 92,962,000 92,962,000 Future amortization income, year one 22,897,000 Future amortization income, year two 3,347,000 Future amortization income, year three 2,501,000 Future amortization income, year four 2,564,000 Future amortization income, year five 1,282,000 Future amortization income, thereafter 11,296,000 Income taxes paid, net of refunds received 2,297,000 (4,005,000) $ 4,701,000 Accounting Standards Update 2017-07 Change In Accounting Estimate [Line Items] Adoption of ASU 2017-07 due to a change in 87,241,000 estimate from change in accounting principles Revenue Benchmark [Member] Change In Accounting Estimate [Line Items] Change in accounting estimate 4,796,000 12,011,000 Operating Income (Loss) [Member] Change In Accounting Estimate [Line Items] Change in accounting estimate 12,332,000 (22,844,000)(68,694,000) Change in accounting estimate included gross 55,180,000 43,405,000 46,074,000 favorable adjustment Change in accounting estimate included gross 42,848,000 66,249,000 114,768,000 unfavorable adjustment Income (Loss), Net [Member] Change In Accounting Estimate [Line Items] Change in accounting estimate 12,332,000 (22,844,000)(68,694,000) Earnings (Loss) Per Share [Member] Change In Accounting Estimate [Line Items] Change in accounting estimate $ 230 $ (450) $ (1,380) Minimum [Member] Change In Accounting Estimate [Line Items]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Finite-lived intangible asset, useful life 7 years Standard trade receivable, payment terms 30 days Maximum [Member] Change In Accounting Estimate [Line Items] Finite-lived intangible asset, useful life 30 years Standard trade receivable, payment terms 120 days

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 2 Divested Operations and 1 Months Ended Months 12 Months Ended Assets Held For Sale - Ended Additional Information Aug. Sep. Aug. (Details) - USD ($) Mar. 31, Dec. 31, Mar. 31, Feb. 28, Mar. 31, Mar. 31, Mar. 31, 31, 30, 31, $ in Thousands 2020 2019 2019 2019 2021 2020 2019 2020 2019 2018 Discontinued operations and assets held for sale Gain (loss) on disposition of $ $ $ assets (104,702) (56,916) (235,301) Defined benefit plan, plan $ 1,853,9621,598,045 assets, amount 1,598,045 Gulfstream G650 [Member] Discontinued operations and assets held for sale Proceeds from divestiture of $ business 51,000 Derecognition of accrued 18,157 warranties Gain (loss) on disposition of $ 819 assets Assets Held for Sale Composites Manufacturing Operations [Member] Discontinued operations and assets held for sale Impairment on the assets held $ 102,493 for sale Fiscal 2020 Divestitures Manufacturing Operations [Member] Discontinued operations and assets held for sale Proceeds from divestiture of $ business 58,000 Gain (loss) on disposition of $ assets 10,000 Guarantor obligations, current 7,000 carrying value Gain (loss) on disposition of (64,000) property plant equipment Defined benefit plan, plan $ assets, amount 55,000 Defined benefit plan, net periodic benefit cost (credit), $ gain (loss) due to settlement (28,000) and curtailment Machining [Member] Discontinued operations and assets held for sale

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Proceeds from divestiture of $ 43,000 business Noncash or part noncash divestiture, amount of 10,000 consideration received Gain (loss) on disposition of (116,000) $ (3,000) business Fabrications [Member] Discontinued operations and assets held for sale Proceeds from divestiture of 133,000 business Gain (loss) on disposition of 54,000 business NAAS [Member] Discontinued operations and assets held for sale Proceeds from divestiture of $ 18,000 business Global 7500 [Member] Discontinued operations and assets held for sale Gain (loss) on disposition of $ business (169,000) TS-LA/TPI [Member] Discontinued operations and assets held for sale Proceeds from divestiture of $ business 43,000 Noncash or part noncash divestiture, amount of 7,000 consideration received Gain (loss) on disposition of $ business (17,000)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and 12 Months Ended Contracts with Customers - Schedule of Disaggregated Net Sales Satisfied Overtime Mar. 31, Mar. 31, Mar. 31, and at a Point in Time 2021 2020 2019 (Excluding Intercompany Sales) (Details) - USD ($) $ in Thousands Disaggregation Of Revenue [Line Items] Amortization of acquired contract liabilities $ 38,564 $ 75,286 $ 67,314 Net sales 1,869,719 2,900,117 $ 3,364,930 Systems & Support [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 1,041,760 1,316,275 Amortization of acquired contract liabilities 15,062 34,486 Revenues excluding intercompany sales 1,056,822 1,350,761 Systems & Support [Member] | Transferred over Time [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 464,874 578,117 Systems & Support [Member] | Transferred at Point in Time [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 576,886 738,158 Aerospace Structures [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 789,395 1,508,556 Amortization of acquired contract liabilities 23,502 40,800 Revenues excluding intercompany sales 812,897 1,549,356 Aerospace Structures [Member] | Transferred over Time [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 746,545 1,378,866 Aerospace Structures [Member] | Transferred at Point in Time [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers $ 42,850 $ 129,690

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and 12 Months Ended Contracts with Customers - Schedule of Disaggregated Net Sales by End Market Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 (Excluding Intercompany Sales) (Details) - USD ($) $ in Thousands Disaggregation Of Revenue [Line Items] Amortization of acquired contract liabilities $ 38,564 $ 75,286 $ 67,314 Net sales 1,869,719 2,900,117 $ 3,364,930 Systems & Support [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 1,041,760 1,316,275 Amortization of acquired contract liabilities 15,062 34,486 Revenues excluding intercompany sales 1,056,822 1,350,761 Systems & Support [Member] | Commercial Aerospace [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 396,841 737,885 Systems & Support [Member] | Military [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 552,323 436,166 Systems & Support [Member] | Business Jets [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 36,701 61,338 Systems & Support [Member] | Regional [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 24,862 43,761 Systems & Support [Member] | Non-aviation [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 31,033 37,125 Aerospace Structures [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 789,395 1,508,556 Amortization of acquired contract liabilities 23,502 40,800 Revenues excluding intercompany sales 812,897 1,549,356 Aerospace Structures [Member] | Commercial Aerospace [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 481,845 879,690 Aerospace Structures [Member] | Military [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 137,466 116,846 Aerospace Structures [Member] | Business Jets [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 158,156 422,681

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Aerospace Structures [Member] | Regional [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers 11,558 89,318 Aerospace Structures [Member] | Non-aviation [Member] Disaggregation Of Revenue [Line Items] Revenue from contracts with customers $ 370 $ 21

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and 12 Months Ended Contracts with Customers - Summary of Contract Assets and Liabilities Balances Mar. 31, 2021 Mar. 31, 2020 (Details) - USD ($) $ in Thousands Revenue From Contract With Customer [Abstract] Contract assets $ 139,937 $ 267,079 Contract liabilities (305,116) (386,585) Net contract liability (165,179) $ (119,506) Change in contract assets (127,142) Change in contract liabilities 81,469 Change in net contract liability $ (45,673)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and 12 Months Contracts with Customers - Ended Additional Information Mar. 31, (Details) - USD ($) Mar. 31, 2021 2020 $ in Thousands Contract With Customer Asset And Liability [Line Items] Revenue recognized due to changes in estimates associated with performance $ 4,796 obligations Change in contract assets 127,142 Contract with customer, contract assets classified as held for sale 76,821 Contract with customer, contract liability classified as held for sale 7,562 Contract with Customer, Liability, Revenue Recognized 78,725 Contract with Customer, Asset, Net, Noncurrent 5,299 $ 22,662 Contract with Customer, Liability, Noncurrent 100,737 $ 91,265 Unsatisfied performance obligations 2,273,527 Subsequent to Fiscal 2021 Divestitures [Member] Contract With Customer Asset And Liability [Line Items] Unsatisfied performance obligations 433,262 Gulfstream G650 [Member] Contract With Customer Asset And Liability [Line Items] Change in contract assets $ 60,802

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue Recognition and Contracts with Customers - Schedule of Performance Mar. 31, Obligations that are 2021 Expected to Be Recognized USD ($) in Future (Details) $ in Thousands Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Unsatisfied performance obligations $ 2,273,527 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Unsatisfied performance obligations 1,251,209 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Unsatisfied performance obligations 961,332 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Unsatisfied performance obligations 60,889 Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Unsatisfied performance obligations $ 97 Maximum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year Maximum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue, remaining performance obligation, expected timing of satisfaction, period 3 years Maximum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue, remaining performance obligation, expected timing of satisfaction, period 5 years Minimum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year Minimum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2025-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Revenue, remaining performance obligation, expected timing of satisfaction, period 4 years Minimum [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-04-01 Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue, remaining performance obligation, expected timing of satisfaction, period 5 years

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Inventories - Schedule of Components of Inventories Mar. 31, 2021Mar. 31, 2020 (Details) - USD ($) $ in Thousands Inventory Disclosure [Abstract] Raw materials $ 45,211 $ 32,552 Work-in-process 277,729 312,953 Finished goods 51,221 50,011 Rotable assets 26,205 57,460 Total inventories $ 400,366 $ 452,976

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Inventories - Additional 12 Months Ended Information (Details) Mar. 31, 2021 $ in Thousands USD ($) Inventory Disclosure [Abstract] Impairment loss on rotable inventory $ 23,689

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Property and Equipment - 12 Months Ended Additional Information Mar. 31, Mar. 31, (Details) - USD ($) Mar. 31, 2021 2020 2019 $ in Thousands Property Plant And Equipment [Line Items] Depreciation $ 71,651 $ 89,857 $ 97,323 Buildings and Improvements [Member] | Minimum [Member] Property Plant And Equipment [Line Items] Property and equipment, useful life 15 years Buildings and Improvements [Member] | Maximum [Member] Property Plant And Equipment [Line Items] Property and equipment, useful life 39 years 6 months Machinery and Equipment [Member] | Minimum [Member] Property Plant And Equipment [Line Items] Property and equipment, useful life 7 years Machinery and Equipment [Member] | Maximum [Member] Property Plant And Equipment [Line Items] Property and equipment, useful life 15 years Furniture, Fixtures and Computer Equipment [Member] | Minimum [Member] Property Plant And Equipment [Line Items] Property and equipment, useful life 3 years Furniture, Fixtures and Computer Equipment [Member] | Maximum [Member] Property Plant And Equipment [Line Items] Property and equipment, useful life 10 years

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Property and Equipment - Schedule of Net Property and Equipment (Details) - Mar. 31, 2021Mar. 31, 2020 USD ($) $ in Thousands Property Plant And Equipment [Abstract] Land $ 17,814 $ 42,438 Construction-in-process 11,368 19,231 Buildings and improvements 144,756 285,407 Machinery and equipment 594,542 701,018 Property and equipment, gross 768,480 1,048,094 Less: accumulated depreciation 557,111 629,953 Property and equipment, net $ 211,369 $ 418,141

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Goodwill and Other 3 Months Ended 12 Months Ended Intangible Assets - Summary of the Changes in the Carrying Value of Goodwill Mar. 31, 2020 Mar. 31, 2021Mar. 31, 2020 By Reportable Segment (Details) - USD ($) $ in Thousands Goodwill [Line Items] March 31, 2020 $ 513,527 Impairment of goodwill $ (66,121) $ (66,121) March 31, 2021 513,527 521,638 513,527 Systems & Support [Member] Goodwill [Line Items] March 31, 2020 513,527 583,225 Effect of exchange rate changes 8,111 (3,577) Impairment of goodwill (66,121) March 31, 2021 $ 513,527 $ 521,638 $ 513,527

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Goodwill and Other 12 Months Ended Intangible Assets - Additional Information Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 (Details) - USD ($) $ in Thousands Goodwill [Line Items] Amortization of Intangible Assets $ 22,551 $ 48,311 $ 52,581 Future amortization expense, 2021 11,846 Future amortization expense, 2022 11,846 Future amortization expense, 2023 11,846 Future amortization expense, 2024 11,846 Future amortization expense, 2025 11,432 Future amortization expense, Thereafter 43,639 Aerospace Structures [Member] Goodwill [Line Items] Goodwill impaired accumulated impairment loss 871,387 1,166,773 Systems & Support [Member] Goodwill [Line Items] Goodwill impaired accumulated impairment loss 66,121 66,121 Gross goodwill $ 587,759 $ 579,649

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Goodwill and Other 12 Months Ended Intangible Assets - Schedule of Components of Intangible Mar. 31, 2021 Mar. 31, 2020 Assets (Details) - USD ($) $ in Thousands Finite Lived And Indefinite Lived Intangible Assets [Line Items] Gross Carrying Amount $ 225,548 $ 757,463 Accumulated Amortization (123,095) (375,495) Net $ 102,453 $ 381,968 Customer Relationships [Member] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite-lived intangible asset, useful life 17 years 10 months 24 17 years 8 months 12 days days Gross Carrying Amount $ 170,198 $ 550,131 Accumulated Amortization (74,253) (276,980) Net $ 95,945 $ 273,151 Licensing Agreements [Member] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite-lived intangible asset, useful life 11 years 3 months 18 11 years 4 months 24 days days Gross Carrying Amount $ 55,050 $ 54,676 Accumulated Amortization (48,645) (46,180) Net $ 6,405 $ 8,496 Other [Member] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite-lived intangible asset, useful life 30 years Gross Carrying Amount $ 300 Accumulated Amortization (197) Net $ 103 Non-Compete Agreements and Other [Member] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite-lived intangible asset, useful life 16 years 8 months 12 days Gross Carrying Amount $ 2,656 Accumulated Amortization (1,208) Net $ 1,448 Tradenames [Member] Finite Lived And Indefinite Lived Intangible Assets [Line Items] Finite-lived intangible asset, useful life 10 years

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Accrued Expenses - Schedule of Accrued Expenses Mar. 31, 2021Mar. 31, 2020 (Details) - USD ($) $ in Thousands Accrued Liabilities Current And Noncurrent [Abstract] Accrued pension $ 1,097 $ 753 Accrued other postretirement benefits 3,371 4,775 Accrued compensation and benefits 97,021 84,404 Accrued interest 31,036 13,252 Accrued warranties 24,492 30,079 Accrued workers' compensation 15,601 16,583 Accrued income tax 5,084 3,796 Operating lease liabilities 11,605 13,139 All other 81,853 60,622 Total accrued expenses $ 271,160 $ 227,403

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Leases - Schedule of 12 Months Ended Components Lease Expense (Details) - USD ($) Mar. 31, 2021Mar. 31, 2020 $ in Thousands Lessee Lease Description [Line Items] Total lease cost $ 38,573 $ 40,545 Cost of sales or Selling, general and administrative expense [Member] Lessee Lease Description [Line Items] Operating lease cost 22,976 24,539 Variable lease cost 9,344 8,382 Depreciation and amortization [Member] Lessee Lease Description [Line Items] Amortization of right-of-use assets 4,673 5,317 Interest expense and other [Member] Lessee Lease Description [Line Items] Interest on lease liability $ 1,580 $ 2,307

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Leases - Schedule of 12 Months Ended Supplemental Cash Flow Information (Details) - USD Mar. 31, 2021Mar. 31, 2020 ($) $ in Thousands Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used in operating leases $ 21,008 $ 21,430 Operating cash flows used in finance leases 1,583 2,327 Financing cash flows used in finance leases 7,774 8,370 ROU assets obtained in exchange for lease liabilities Operating leases 6,547 3,826 Finance leases $ 2,909 $ 1,039

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Leases - Schedule of Supplemental Balance Sheet Information Related to Mar. 31, 2021 Mar. 31, 2020 Leases (Details) - USD ($) $ in Thousands ASSETS Operating lease ROU assets $ 46,643 $ 61,461 Operating Lease, Right-of-Use Asset, Statement of Assets held for sale Other, net Financial Position [Extensible List] Finance lease ROU assets, cost $ 44,128 $ 39,461 Finance Lease, Right-of-Use Asset, Statement of Financial Property and equipment, Assets held for sale Position [Extensible List] net Accumulated amortization $ (23,344) $ (18,650) Finance Lease, Liability, Statement of Financial Position Property and equipment, Assets held for sale [Extensible List] net Finance lease ROU assets, net $ 20,784 $ 20,811 Total lease assets 67,427 82,272 Current liabilities: Operating $ 12,885 $ 13,139 Operating Lease, Liability, Current, Statement of Financial Liabilities related to assets Accrued expenses Position [Extensible List] held for sale Finance $ 5,972 $ 7,336 Finance Lease, Liability, Current, Statement of Financial Liabilities related to assets Current portion of long- Position [Extensible List] held for sale term debt Noncurrent Operating $ 42,385 $ 54,687 Operating Lease, Liability, Noncurrent, Statement of Liabilities related to assets Other noncurrent Financial Position [Extensible List] held for sale liabilities Finance $ 14,878 $ 16,597 Finance Lease, Liability, Noncurrent, Statement of Financial Liabilities related to assets Long-term debt, less Position [Extensible List] held for sale current portion Total lease liabilities $ 76,120 $ 91,759

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Leases - Schedule of Information Related to Mar. 31, 2021 Mar. 31, 2020 Lease Terms and Discount Rates (Details) Leases [Abstract] Operating leases 7 years 3 months 18 days 7 years 2 months 12 days Finance leases 6 years 10 months 24 days6 years 10 months 24 days Operating leases 6.30% 6.20% Finance leases 6.80% 5.90%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Leases - Schedule of Maturity of Lease Liabilities Mar. 31, 2021 (Details) USD ($) $ in Thousands Leases [Abstract] Operating leases, FY2022 $ 15,752 Operating leases, FY2023 10,561 Operating leases, FY2024 7,057 Operating leases, FY2025 6,339 Operating leases, FY2026 5,880 Operating leases, Thereafter 23,912 Total operating lease payments 69,501 Operating leases, Less: Imputed interest (14,231) Total operating lease liabilities 55,270 Finance leases, FY2022 7,436 Finance leases, FY2023 4,322 Finance leases, FY2024 3,520 Finance leases, FY2025 1,961 Finance leases, FY2026 1,305 Finance leases, Thereafter 8,656 Total finance lease payments 27,200 Finance leases, Less: Imputed interest (6,350) Total finance lease liabilities 20,850 Total lease payment, FY2022 23,188 Total lease payment, FY2023 14,883 Total lease payment, FY2024 10,577 Total lease payment, FY2025 8,300 Total lease payment, FY2026 7,185 Total lease payments, Thereafter 32,568 Total lease payments 96,701 Total lease payment, Less: Imputed interest (20,581) Total lease liabilities $ 76,120

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Long-term Debt - Schedule of Long-term Debt Instruments (Details) - USD Mar. 31, 2021Mar. 31, 2020 ($) $ in Thousands Debt Instrument [Line Items] Less: debt issuance costs $ (24,053) $ (16,426) Long-term debt 1,957,543 1,807,507 Current portion of long-term debt 5,247 7,336 Long-term debt, less current portion 1,952,296 1,800,171 Revolving Credit Facility [Member] Debt Instrument [Line Items] Long-term debt 400,000 Receivable Securitization Facility [Member] Debt Instrument [Line Items] Long-term debt 0 75,000 Capital Lease Obligations [Member] Debt Instrument [Line Items] Long-term debt 20,125 23,933 Senior Secured First Lien Notes Due 2024 [Member] Debt Instrument [Line Items] Long-term debt 700,000 Senior Notes Due 2024 [Member] Debt Instrument [Line Items] Long-term debt 525,000 525,000 Senior Notes Due 2022 [Member] Debt Instrument [Line Items] Long-term debt 236,471 300,000 Senior Notes Due 2025 [Member] Debt Instrument [Line Items] Long-term debt $ 500,000 $ 500,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Long-term Debt - Additional 12 Months Ended Information (Details) - USD Aug. 17, Sep. 23, Aug. 17, Jun. 03, Mar. 31, Mar. 31, Mar. 31, 2021 ($) 2020 2019 2017 2014 2020 2019 Debt Instrument [Line Items] Payments of financing costs $ $ $ 20,716,000 17,718,000 1,982,000 Interest paid, including $ capitalized interest, operating 116,515,000 99,438,000 99,981,000 and investing activities Long-term debt, maturities, repayments of principal in next 5,972,000 twelve months Long-term debt, maturities, repayments of principal in year 239,883,000 two Long-term debt, maturities, repayments of principal in year 2,790,000 three Long-term debt, maturities, repayments of principal in year 1,226,364,000 four Long-term debt, maturities, repayments of principal in year 500,781,000 five Long-term debt, maturities, repayments of principal after 6,531,000 year five Revolving Credit Facility [Member] Debt Instrument [Line Items] Payment of line of credit $ facility 335,240,000 Long-term debt 400,000,000 Receivable Securitization Facility [Member] Debt Instrument [Line Items] Line of credit facility, 75,000,000 maximum borrowing capacity Long-term debt 0 75,000,000 Letters of credit outstanding, $ 27,763,000 amount Receivables securitization 2022-12 facility, expiration period Receivable Securitization Facility [Member] | LIBOR [Member] Debt Instrument [Line Items]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Line of credit facility, 2.50% commitment fee percentage Line of credit facility, unused capacity, commitment fee 0.60% percentage Receivable Securitization Facility [Member] | Minimum [Member] Debt Instrument [Line Items] Line of credit facility, $ 50,000,000 maximum borrowing capacity Receivable Securitization Facility [Member] | Maximum [Member] Debt Instrument [Line Items] Debt instrument, interest rate, 0.75% stated percentage Senior Secured First Lien Notes Due 2024 [Member] Debt Instrument [Line Items] Debt instrument, interest rate, 8.875% stated percentage Long-term debt $ 700,000,000 Debt instrument, principal $ amount 700,000,000 Proceeds from loan, percentage of principal (as a 100.00% percent) Debt instrument, interest rate, 8.875% effective percentage Debt instrument, interest Interest is payment terms payable semiannually in cash in arrears on June 1 and December 1 of each year, commencing on December 1, 2020. Debt instrument, interest Dec. 01, payment commencing date 2020 Payments of financing costs $ 13,000,000 Debt instrument, redemption 100.00% price, percentage Debt instrument, redemption, 40.00% description

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Debt instrument, redemption price, percentage - equity 108.875% offering Debt instrument, redemption price, percentage - change of 101.00% control Debt instrument repayment 106.656% premium percentage Aggregate principal amount of $ Notes outstanding 350,000,000 Available amount in asset sale $ covenants 100,000,000 Senior Notes Due 2024 [Member] Debt Instrument [Line Items] Debt instrument, interest rate, 6.25% stated percentage Long-term debt $ 525,000,000 525,000,000 Debt instrument, principal $ amount 525,000,000 Debt instrument, interest rate, 6.25% effective percentage Debt instrument, interest Interest is payment terms payable semiannually in cash in arrears on March 15 and September 15 of each year, commencing on March 15, 2020. Payments of financing costs $ 9,300,000 Debt instrument, redemption 100.00% 100.00% price, percentage Debt instrument, redemption, 40.00% description Debt instrument, redemption price, percentage - equity 106.25% offering Debt instrument, redemption price, percentage - change of 101.00% control Debt instrument, due date Sep. 15, 2024 Senior Notes Due 2022 [Member] Debt Instrument [Line Items] Debt instrument, interest rate, 5.25% stated percentage Long-term debt $ 236,471,000 300,000,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Debt instrument, principal $ amount 300,000,000 Proceeds from loan, percentage of principal (as a 100.00% percent) Debt instrument, interest rate, 5.25% effective percentage Debt instrument, interest Interest is payment terms payable semiannually in cash in arrears on June 1 and December 1 of each year, commencing on December 1, 2014. Payments of financing costs $ 4,990,000 Debt instrument, due date Jun. 01, 2022 Percentage of principal amount that the holder of the note may require the entity to repurchase due to a 101.00% fundamental change undergone by the entity, subject to certain conditions (as a percent) Extinguishment of debt $ 63,529,000 amount Asset sales redemption price, percentage of principal (as a 100.00% percent) Senior Notes Due 2025 [Member] Debt Instrument [Line Items] Debt instrument, interest rate, 7.75% stated percentage Long-term debt $ $ 500,000,000 500,000,000 Debt instrument, principal $ amount 500,000,000 Proceeds from loan, percentage of principal (as a 100.00% percent) Debt instrument, interest Interest is payment terms payable semiannually in cash in arrears on February 15 and August 15 of

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document each year, commencing on February 15, 2018. Payments of financing costs $ 8,779,000 Debt instrument, due date Aug. 15, 2025 Percentage of principal amount that the holder of the note may require the entity to repurchase due to a 101.00% fundamental change undergone by the entity, subject to certain conditions (as a percent) Asset sales redemption price, percentage of principal (as a 100.00% percent) The maximum percentage of the principal amounts of the debt instrument which the 35.00% entity may redeem (as a percent) The limit of the principal amount of the debt instrument 107.75% which the entity may redeem (as a percent)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Long-term Debt - Schedule of Carrying Amounts and Estimated Fair Values of Mar. 31, 2021Dec. 31, 2020Mar. 31, 2020 Long-term Debt (Details) - USD ($) $ in Thousands Debt Instrument [Line Items] Long-term debt $ 1,957,543 $ 1,807,507 Reported Value Measurement [Member] Debt Instrument [Line Items] Long-term debt 1,957,543 $ 1,807,507 Estimate of Fair Value Measurement [Member] Debt Instrument [Line Items] Long-term debt $ 2,085,204 $ 1,559,455

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Other Noncurrent Liabilities - Schedule of Other Noncurrent Liabilities Mar. 31, 2021Mar. 31, 2020 (Details) - USD ($) $ in Thousands Other Liabilities Noncurrent [Abstract] Acquired contract liabilities, net $ 43,888 $ 92,962 Accrued warranties 9,519 31,036 Accrued workers' compensation 11,226 13,603 Noncurrent contract liabilities 100,737 91,265 Operating lease liabilities 26,060 54,687 Environmental contingencies 9,185 18,060 Income tax reserves 300 594 All other 6,463 3,962 Total other noncurrent liabilities $ 207,378 $ 306,169

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Taxes - Components 12 Months Ended of Loss from Continuing Operations before Income Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 Taxes (Details) - USD ($) $ in Thousands Income Tax Examination [Line Items] (Loss) income from continuing operations, before income taxes $ (448,029) $ (23,635) $ (332,572) Foreign [Member] Income Tax Examination [Line Items] (Loss) income from continuing operations, before income taxes (1,518) 33,399 (18,336) Domestic [Member] Income Tax Examination [Line Items] (Loss) income from continuing operations, before income taxes $ (446,511) $ (57,034) $ (314,236)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Taxes - Components 12 Months Ended of Income Tax (Benefit) Expense (Details) - USD ($) Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 $ in Thousands Income Tax Disclosure [Abstract] Current Federal tax expense (benefit) $ (654) $ (1,253) Current State tax expense (benefit) $ (315) 27 431 Current Foreign tax expense (benefit) 3,372 3,602 3,335 Current income tax expense (benefit) 3,057 2,975 2,513 Deferred Federal income tax expense (benefit) 2,748 (9,076) Deferred State income tax expense (benefit) 73 1,593 Deferred Foreign income tax expense (benefit) (176) 2 (456) Deferred income tax expense (benefit) (176) 2,823 (7,939) Income tax (benefit) expense $ 2,881 $ 5,798 $ (5,426)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Taxes - Schedule of 12 Months Ended Reconciliation of Statutory Federal Income Tax Rate to Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 Effective Tax Rate (Details) Income Tax Disclosure [Abstract] Statutory federal income tax rate 21.00% 21.00% 21.00% State and local income taxes, net of federal tax benefit 2.70% (12.10%) 4.60% Goodwill impairment (37.40%) Disposition of business 3.20% Miscellaneous permanent items and nondeductible accruals (0.70%) 3.90% (1.20%) Research and development tax credit 0.70% 30.40% 3.30% Foreign tax credits (0.30%) (24.10%) (0.70%) Valuation allowance (25.50%) 29.30% (28.60%) Tax reform and CARES Act (12.30%) 0.40% Global Intangible Low-Taxed Income (20.40%) (1.30%) Other (including foreign rate differential and FIN 48) 1.40% (2.80%) 0.90% Effective income tax rate (0.70%) (24.50%) 1.60%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Taxes - Components of Deferred Tax Assets and Mar. 31, 2021Mar. 31, 2020 Liabilities (Details) - USD ($) $ in Thousands Income Tax Disclosure [Abstract] Net operating loss and other credit carryforwards $ 345,071 $ 318,341 Inventory 21,484 17,521 Accruals and reserves 34,379 40,492 Interest carryforward 62,893 38,383 Pension and other postretirement benefits 89,952 152,048 Lease right-of-use assets 6,890 11,495 Prepaid expenses and other 241 Acquired contract liabilities, net 7,504 21,771 Deferred tax assets, gross 568,173 600,292 Valuation allowance (512,554) (438,667) Net deferred tax assets 55,619 161,625 Deferred revenue 22,342 38,458 Property and equipment 12,581 34,939 Goodwill and other intangible assets 21,701 80,740 Lease liabilities 5,848 14,928 Prepaid expenses and other 588 Deferred tax liabilities 63,060 169,065 Net deferred tax liabilities $ 7,441 $ 7,440

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Income Taxes - Additional 12 Months Ended Information (Details) - USD Mar. 31, Mar. 31, Mar. 31, ($) 2021 2020 2019 Income Tax Contingency [Line Items] Valuation allowance, deferred tax asset, increase (decrease), amount $ 73,887,000 Effective income tax rate (as a percent) (0.70%) (24.50%) 1.60% Effective income tax rate reconciliation, foreign tax rate differences, $ 1,244,000 amount Change in valuation allowance, deferred tax asset 114,283,000 Income tax holiday, aggregate dollar amount $ $ $ 0 1,932,000 2,160,000 Income tax holiday, income tax benefits per share $ 0.00 $ 0.04 $ 0.04 Deferred tax liability not recognized, amount of unrecognized deferred tax $ 162,467,000 liability Unrecognized tax benefits $ 11,536,000 18,965,000 Significant change in unrecognized tax benefits is reasonably possible, 0 amount of unrecorded benefit R&D Tax Credit [Member] Income Tax Contingency [Line Items] Effective income tax Rate reconciliation, Tax credit, amount 3,076,000 U.S Federal [Member] Income Tax Contingency [Line Items] Net operating loss carryforwards 659,278,000 Foreign [Member] Income Tax Contingency [Line Items] Net operating loss carryforwards 140,839,000 State [Member] Income Tax Contingency [Line Items] Net operating loss carryforwards $ 1,427,890,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Stockholders' Deficit - Ended Additional Information Feb. 04, Mar. 31, Mar. 31, Mar. 31, (Details) - USD ($) 2021 2021 2020 2014 Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Common stock, par value $ 0.001 $ 0.001 Issuance of common stock - at the market offering, net of issuance $ costs 145,383,000 Sales of common stock, net of issuance costs $ 145,383,000 Common Stock, Voting Rights one Stock Repurchase Program, Number of Shares Authorized to be 5,000,000 500,800 Repurchased Stock Repurchase Program, Remaining Authorized Repurchase $ 2,277,789 Amount Preferred Stock, Par or Stated Value Per Share $ 0.01 Preferred Stock, Shares Authorized 250,000 Preferred Stock, Shares Outstanding 0 0 Common Stock [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Issuance of common stock - at the market offering, net of issuance $ 9,000 costs Threshold stock percentage for rights become exercisable and 5.00% entitle to purchase additional shares Equity Distribution Agreement [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Common stock, par value $ 0.001 Issuance of common stock - at the market offering, net of issuance $ costs 150,000,000 Number of shares sold 9,178,752 Sales of common stock, net of issuance costs $ 145,383,000 Equity Distribution Agreement [Member] | Maximum [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Issuance of common stock - at the market offering, net of issuance $ costs 150,000,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Stockholders' Deficit - 12 Months Ended Schedule of Changes in Accumulated Other Mar. 31, Mar. 31, Mar. 31, Comprehensive Loss 2021 2020 2019 (Details) - USD ($) $ in Thousands Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Balance $ $ $ (781,264)(573,313)450,534 Total other comprehensive income (loss) 216,256 (230,437)(114,435) Balance (818,853)(781,264)(573,313) Currency Translation Adjustment [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Balance (62,045) (48,606) Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 19,884 Other Comprehensive Income (Loss), Foreign Currency Transaction and (13,439) Translation Gain (Loss) Arising During Period, Net of Tax Total other comprehensive income (loss) 19,884 (13,439) Balance (42,161) (62,045) (48,606) Unrealized Gains and Losses on Derivative Instruments [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Balance (4,303) (1,130) Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives 5,891 (1,611) Arising During Period, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on (573) (1,562) Derivatives, Net of Tax Total other comprehensive income (loss) 5,318 (3,173) Balance 1,015 (4,303) (1,130) Defined Benefit Pension Plans and Other Postretirement Benefits [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Balance (680,100)(466,275) Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 168,701 (208,835) Reclassification from Accumulated Other Comprehensive Income, Current Period, 22,353 (4,990) Net of Tax Total other comprehensive income (loss) 191,054 (213,825) Balance (489,046)(680,100)(466,275) Accumulated Other Comprehensive Income (Loss) [Member] Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Balance (746,448)(516,011) (401,576) Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 194,476 (223,885)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Reclassification from Accumulated Other Comprehensive Income, Current Period, 21,780 (6,552) Net of Tax Total other comprehensive income (loss) 216,256 (230,437) Balance $ $ $ (530,192)(746,448)(516,011)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Loss per Share - Summary 12 Months Ended of Reconciliation between Weighted-average Common Shares Outstanding used in Calculation of Basis and Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 Diluted Loss Per Share (Details) - shares shares in Thousands Earnings Per Share [Abstract] Weighted average common shares outstanding—basic 52,739 50,494 49,698 Net effect of dilutive stock options and non-vested stock 0 0 0 Weighted average common shares outstanding—diluted 52,739 50,494 49,698

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 1 Months 12 Months Ended Employee Benefit Plans - Ended Additional Information Mar. (Details) - USD ($) Feb. 28, Mar. 31, Mar. 31, 31, Mar. 31, 2021 2019 2020 2019 2022 Defined Benefit Plan Disclosure [Line Items] Defined contribution plan, employer matching contribution, 6.00% percent of match Defined contribution plan, The Company generally matches description contributions up to 75% of the first 6% of compensation contributed by the participant. Defined benefit plan, plan assets, $ $ $ 1,665,000 contributions by employer 14,763,00013,685,000 Increase (Decrease) in Obligation, $ 99,000,000 Other Postretirement Benefits Percentage of defined benefit plan pension plan with projected benefit 10.00% obligation in excess of plan assets plan assets Recognition of a charge for special $ termination benefits 4,032,000 Defined benefit plan, assumption, number of basis point sensitivity, 25.00% discount rate Plan assets are expected to be $ 0 returned Common Stock [Member] Defined Benefit Plan Disclosure [Line Items] Number of Shares contributed 2,849,002 Aggregate value of Shares $ 40,000,000 contributed Other postretirement [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, 2,182,000 8,319,000 contributions by employer Defined benefit plan, estimated future employer contributions in 0 next fiscal year Pension Plan [Member]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, $ 41,201,000 51,372,000 contributions by employer Transfer of pension assets and 55,354,000 liabilities to buyer Settlement charge 29,313,000 Curtailment charge 22,732,000 Nashville Manufacturing Operations [Member] Defined Benefit Plan Disclosure [Line Items] Transfer of pension assets and 55,354,000 liabilities to buyer Settlement charge 28,452,000 Curtailment charge 214,000 TAS - Grand Prairie, TX [Member] Defined Benefit Plan Disclosure [Line Items] Increase (Decrease) in Obligation, 61,766,000 Other Postretirement Benefits Defined benefit plan, net periodic benefit cost (credit), gain (loss) due 23,476,000 to settlement and curtailment Defined Benefit Plan, Other Cost 11,642,000 (Credit) TAS - Grand Prairie, TX [Member] | Other postretirement [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, net periodic benefit cost (credit), gain (loss) due 41,128,000 to settlement and curtailment TAS - Nashville, TN [Member] Defined Benefit Plan Disclosure [Line Items] Increase (Decrease) in Obligation, 34,731,000 Other Postretirement Benefits Defined benefit plan, net periodic benefit cost (credit), gain (loss) due 8,363,000 to settlement and curtailment Increase (Decrease) in Obligation, $ Pension Benefits 4,898,000 Maximum [Member] Defined Benefit Plan Disclosure [Line Items]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Defined contribution plan, employer matching contribution, 75.00% percent of match Maximum [Member] | Pension Plan [Member] Defined Benefit Plan Disclosure [Line Items] Expected long-term rate of return 8.00% 8.00% 8.00% on plan assets Maximum [Member] | Pension Plan [Member] | Forecast [Member] Defined Benefit Plan Disclosure [Line Items] Expected long-term rate of return 8.00% on plan assets Minimum [Member] | Pension Plan [Member] Defined Benefit Plan Disclosure [Line Items] Expected long-term rate of return 5.00% 5.00% 5.00% on plan assets Minimum [Member] | Pension Plan [Member] | Forecast [Member] Defined Benefit Plan Disclosure [Line Items] Expected long-term rate of return 5.00% on plan assets

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - 12 Months Ended Schedule of Consolidated Defined Benefit Pension Mar. 31, Mar. 31, Mar. 31, Plans (Details) - USD ($) 2021 2020 2019 $ in Thousands Pension Plan [Member] Defined Benefit Plan Disclosure [Line Items] Projected benefit obligation at beginning of year $ 2,254,985 $ 2,234,734 Service cost 1,537 2,336 $ 3,292 Interest cost 64,599 68,446 79,446 Actuarial loss (gain) 83,263 138,652 Plan amendments 4,898 Curtailments 22,732 Divestitures (55,354) Participant contributions 164 204 Settlements (14,579) Special termination benefits 11,642 4,032 Benefits paid (179,956) (156,084) Currency translation adjustment 5,656 (2,642) Projected benefit obligation at end of year 2,230,248 2,254,985 2,234,734 Accumulated benefit obligation at end of year 2,228,830 2,252,126 Other postretirement [Member] Defined Benefit Plan Disclosure [Line Items] Projected benefit obligation at beginning of year 7,150 109,455 Service cost 0 62 227 Interest cost 112 1,559 4,039 Actuarial loss (gain) (156) 3,472 Plan amendments (99,080) Participant contributions 252 Benefits paid (2,182) (8,570) Projected benefit obligation at end of year 4,924 7,150 $ 109,455 Accumulated benefit obligation at end of year $ 4,924 $ 7,150 Assumptions used to determine benefit obligations at end of year Discount rate 2.51% 3.00% Minimum [Member] | Pension Plan [Member] Assumptions used to determine benefit obligations at end of year Discount rate 2.05% 2.47% Rate of compensation increase 2.80% 3.50% Maximum [Member] | Pension Plan [Member] Assumptions used to determine benefit obligations at end of year Discount rate 3.17% 3.32%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - 12 Months Ended Schedule of Change in Fair Value of Plan Assets (Details) Mar. 31, Mar. 31, Mar. 31, - USD ($) 2021 2020 2019 $ in Thousands Change in fair value of plan assets Fair value of plan assets at beginning of year $ 1,598,045 Company contributions 1,665 $ 14,763 $ 13,685 Fair value of plan assets at end of year 1,853,962 1,598,045 Reconciliation of amounts recognized on the consolidated balance sheets Accrued benefit liability—noncurrent (384,256) (660,065) Pension Plan [Member] Change in fair value of plan assets Fair value of plan assets at beginning of year 1,598,045 1,796,111 Actual return on plan assets 388,392 (20,869) Settlements (14,579) Participant contributions 164 204 Divestitures (55,354) Company contributions 41,201 51,372 Benefits paid (179,956) (156,084) Currency translation adjustment 6,117 (2,756) Fair value of plan assets at end of year 1,853,963 1,598,045 $ 1,796,111 Funded status (underfunded) Funded status (376,285) (656,940) Reconciliation of amounts recognized on the consolidated balance sheets Pension asset—noncurrent 7,515 1,503 Accrued benefit liability—current (1,097) (753) Accrued benefit liability—noncurrent (382,703) (657,690) Net amount recognized (376,285) (656,940) Reconciliation of amounts recognized in accumulated other comprehensive income Prior service credits 4,621 5,595 Actuarial losses (gains) 755,234 953,913 Income tax (benefits) expenses related to above items (204,594) (204,594) Unamortized benefit plan costs (gains) 555,261 754,914 Other postretirement [Member] Change in fair value of plan assets Participant contributions 252 Company contributions 2,182 8,319 Benefits paid (2,182) (8,571) Funded status (underfunded) Funded status (4,924) (7,150)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Reconciliation of amounts recognized on the consolidated balance sheets Accrued benefit liability—current (3,372) (4,775) Accrued benefit liability—noncurrent (1,552) (2,375) Net amount recognized (4,924) (7,150) Reconciliation of amounts recognized in accumulated other comprehensive income Prior service credits (54,109) (59,214) Actuarial losses (gains) (53,542) (58,151) Income tax (benefits) expenses related to above items 42,016 42,016 Unamortized benefit plan costs (gains) $ (65,635) $ (75,349)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - 12 Months Ended Schedule of Components of Net Periodic Benefit Cost Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 (Details) - USD ($) $ in Thousands Pension Plan [Member] Defined Benefit Plan Disclosure [Line Items] Service cost $ 1,537 $ 2,336 $ 3,292 Interest cost 64,599 68,446 79,446 Expected return on plan assets (136,581) (141,972) (145,361) Amortization of prior service credit cost 974 (874) (3,619) Amortization of net loss 31,248 28,288 20,151 Curtailment loss (gain) 23,690 Settlements 29,313 Special termination benefits 11,642 4,032 Total net periodic benefit (income) expense $ (38,223) $ 20,869 $ (42,059) Pension Plan [Member] | Minimum [Member] Defined Benefit Plan Disclosure [Line Items] Discount rate 2.47% 2.54% 2.65% Expected long-term rate of return on plan assets 5.00% 5.00% 5.00% Rate of compensation increase 3.50% 3.50% 3.50% Pension Plan [Member] | Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Discount rate 3.32% 3.88% 4.01% Expected long-term rate of return on plan assets 8.00% 8.00% 8.00% Rate of compensation increase 4.50% 4.50% 4.50% Other postretirement [Member] Defined Benefit Plan Disclosure [Line Items] Service cost $ 0 $ 62 $ 227 Interest cost 112 1,559 4,039 Amortization of prior service credit cost (5,105) (4,872) (4,655) Amortization of net loss (4,766) (6,361) (9,851) Curtailment loss (gain) (49,491) Total net periodic benefit (income) expense $ (9,759) $ (59,103) $ (10,240) Discount rate 3.00% 3.93% Other postretirement [Member] | Minimum [Member] Defined Benefit Plan Disclosure [Line Items] Discount rate 2.68% Other postretirement [Member] | Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Discount rate 3.77%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - Schedule of Estimated Mar. 31, 2021 Future Benefit Payments USD ($) from Plan Assets (Details) $ in Thousands Pension Plan [Member] Defined Benefit Plan Disclosure [Line Items] 2022 $ 192,745 2023 163,947 2024 163,676 2025 156,660 2026 154,324 2027 - 2031 705,477 Other postretirement [Member] Defined Benefit Plan Disclosure [Line Items] 2022 3,375 2023 169 2024 161 2025 153 2026 143 2027 - 2031 $ 585

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - Schedule of Company's Target Asset Allocation and Mar. 31, 2021Mar. 31, 2020 Actual Asset Allocations (Details) Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, actual allocation, percentage 100.00% 100.00% Equity Securities [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, actual allocation, percentage 50.00% 42.00% Equity Securities [Member] | Minimum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 40.00% Equity Securities [Member] | Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 50.00% Fixed Income Securities [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, actual allocation, percentage 39.00% 50.00% Fixed Income Securities [Member] | Minimum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 40.00% Fixed Income Securities [Member] | Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 50.00% Alternative Investments [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, actual allocation, percentage 5.00% 6.00% Alternative Investments [Member] | Minimum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 0.00% Alternative Investments [Member] | Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 10.00% Other Investments [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, actual allocation, percentage 6.00% 2.00% Other Investments [Member] | Minimum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 0.00% Other Investments [Member] | Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, target allocation, percentage 5.00%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - Schedule of Fair Value of Mar. 31, Mar. 31, Benefit Plan Assets (Details) 2021 2020 - USD ($) $ in Thousands Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount $ 1,853,962 $ 1,598,045 Cash and Cash Equivalents [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 42,003 35,110 Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 42,003 35,110 International Equity Securities [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 164,298 155,389 International Equity Securities [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 164,298 155,389 Equity Securities [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 7,410 2 Equity Securities [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 7,410 2 Equity Funds [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 537,813 400,131 Equity Funds [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 537,813 400,131 Equity Funds, Foreign [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 42,944 34,014 Equity Funds, Foreign [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 42,944 34,014 Other Corporate Bonds [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 12,231 23,672 Other Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 12,231 23,672 US Government Debt Securities [Member]

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 103,853 93,677 US Government Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 103,853 93,677 Fixed Income Funds [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 509,760 605,487 Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 509,760 605,487 Life Insurance Contract [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 9,813 910 Life Insurance Contract [Member] | Significant Unobservable Inputs (Level 3) [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 9,813 910 Investment [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 1,430,125 1,348,392 Investment [Member] | Fair Value, Inputs, Level 1 Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 1,304,228 1,230,133 Investment [Member] | Fair Value, Inputs, Level 2 [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 116,084 117,349 Investment [Member] | Significant Unobservable Inputs (Level 3) [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 9,813 910 US Equity Commingled Fund [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 17,289 8,180 International Equity Commingled Fund [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 158,447 67,101 US Fixed Income Commingled Fund [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 59,203 73,838 International Fixed income Commingled Fund [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 1,599 1,380

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Private Equity Funds [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 95,880 89,797 Government Securities Commingled Fund [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 24,384 8,333 Other Investments [Member] | Investment Measured at NAV [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 1,549 1,534 Investment Measured At Net Asset Value Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 358,351 250,163 Accounts Receivable [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount 67,378 3,292 Accounts Payable [Member] Defined Benefit Plan Disclosure [Line Items] Defined benefit plan, plan assets, amount $ (1,892) $ (3,802)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Employee Benefit Plans - 12 Months Schedule of Effect of Twenty Ended Five Basis-Point Change in Mar. 31, 2021 Discount Rates (Details) USD ($) $ in Thousands Pension Plan [Member] Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] Defined benefit plan, effect of a 25 basis point increase in discount rate, obligation $ (52,031) [1] Defined benefit plan, effect of a 25 basis point increase in discount rate, net periodic benefit 586 cost Defined benefit plan, effect of a 25 basis point decrease in discount rate, obligation 54,288 [1] Defined benefit plan, effect of a 25 basis point decrease in discount rate, net periodic benefit (707) cost Other postretirement [Member] Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items] Defined benefit plan, effect of a 25 basis point increase in discount rate, obligation (33) Defined benefit plan, effect of a 25 basis point increase in discount rate, net periodic benefit 4 cost Defined benefit plan, effect of a 25 basis point decrease in discount rate, obligation 34 Defined benefit plan, effect of a 25 basis point decrease in discount rate, net periodic benefit $ 4 cost [1]Excludes impact to plan assets due to the LDI investment approach discussed above under "Plan Assets, Investment Policy and Strategy."

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Stock Compensation Plans - 12 Months Ended Additional Information Mar. 31, Mar. 31, Mar. 31, (Details) - USD ($) 2021 2020 2019 $ in Thousands Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Fair value of share-based compensation granted to employees $ 13,103 $ 13,249 $ 15,911 Share-based compensation expense $ 12,701 $ 11,062 10,259 Available for issuance of common stock 2,019,502 1,564,791 Fair value of employee stock vested in period $ 8,037 $ 7,052 $ 7,031 Expected future compensation expense on restricted stock net of expected $ 8,376 forfeitures Expected to be recognized over the remaining weighted-average vesting 1 year 6 period months Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based compensation arrangement by share-based payment award, 3 years award vesting period Restricted Stock Units [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based compensation arrangement by share-based payment award, 3 years award vesting period Performance Restricted Stock Award [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based compensation arrangement by share-based payment award, 3 years award service period Number of shares vest if threshold vesting conditions not met 0 Performance Restricted Stock Award [Member] | Maximum [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Percentage of vesting of shares granted if threshold vesting conditions 200.00% exceed

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Stock Compensation Plans - 12 Months Summary of Status of Non- Ended Vested Shares/Units of Mar. 31, 2021 Restricted Stock and $ / shares Deferred Stock Units shares (Details) Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Shares, Non-vested restricted awards and deferred stock units at March 31, 2019 | shares 1,159,630 Shares, Granted | shares 1,154,181 Shares, Vested | shares (396,847) Shares, Forfeited | shares (218,205) Shares, Non-vested restricted awards and deferred stock units at March 31, 2020 | shares 1,698,759 Weighted- Average Grant Date Fair Value, Non-vested restricted awards and deferred stock units $ 24.40 at March 31, 2019 | $ / shares Weighted- Average Grant Date Fair Value, Granted | $ / shares 11.35 Weighted- Average Grant Date Fair Value, Vested | $ / shares 20.25 Weighted- Average Grant Date Fair Value, Forfeited | $ / shares 17.58 Weighted- Average Grant Date Fair Value, Non-vested restricted awards and deferred stock units $ 15.46 at March 31, 2020 | $ / shares

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Restructuring Costs - 12 Months Ended Additional Information Mar. 31, Mar. 31, Mar. 31, (Details) - USD ($) 2021 2020 2019 $ in Thousands Restructuring Cost And Reserve [Line Items] Restructuring $ 53,224 $ 25,340 $ 31,098 Reductions in Force [Member] | Accrued Expenses [Member] Restructuring Cost And Reserve [Line Items] Restructuring 19,260 Systems & Support [Member] Restructuring Cost And Reserve [Line Items] Restructuring 7,871 Aerospace Structures [Member] Restructuring Cost And Reserve [Line Items] Restructuring 36,879 Aerospace Structures [Member] | Reductions in Force [Member] Restructuring Cost And Reserve [Line Items] Restructuring 17,737 Aerospace Structures [Member] | Facility Closures [Member] Restructuring Cost And Reserve [Line Items] Restructuring 15,781 Aerospace Structures [Member] | Third-Party Consulting and Other Costs [Member] Restructuring Cost And Reserve [Line Items] Restructuring 2,937 Corporate Headquarters [Member] Restructuring Cost And Reserve [Line Items] Restructuring $ 8,474

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Customer Concentration - 12 Months Ended Additional Information Mar. 31, Mar. 31, Mar. 31, (Details) - USD ($) 2021 2020 2019 $ in Thousands Concentration Risk [Line Items] Net sales $ $ $ 1,869,719 2,900,117 3,364,930 Revenue from Contract with Customer [Member] | Credit Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 10.00% Boeing [Member] | Trade Accounts Receivable [Member] | Credit Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 23.00% 21.00% Boeing [Member] | Net sales [Member] | Credit Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 37.00% 34.00% 31.00% Net sales $ $ 698,372 $ 983,763 1,031,106 Boeing [Member] | Net sales [Member] | Credit Concentration Risk [Member] | Systems & Support [Member] Concentration Risk [Line Items] Net sales 225,027 254,660 243,046 Boeing [Member] | Net sales [Member] | Credit Concentration Risk [Member] | Aerospace Structures [Member] Concentration Risk [Line Items] Net sales $ 473,346 $ 729,103 $ 788,061 Bombardier [Member] | Trade Accounts Receivable [Member] | Credit Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 1.00% 16.00% Gulfstream [Member] | Net sales [Member] | Credit Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 12.00% 11.00% Net sales $ 337,173 $ 361,451 Gulfstream [Member] | Net sales [Member] | Credit Concentration Risk [Member] | Minimum [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 10.00% Gulfstream [Member] | Net sales [Member] | Credit Concentration Risk [Member] | Systems & Support [Member] Concentration Risk [Line Items] Net sales 3,250 3,067

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Gulfstream [Member] | Net sales [Member] | Credit Concentration Risk [Member] | Aerospace Structures [Member] Concentration Risk [Line Items] Net sales $ 333,924 $ 358,383

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Collective Bargaining 12 Months Agreements - Additional Ended Information (Details) - Unionized Employees Mar. 31, 2021 Concentration Risk [Member] Workforce Subject To Collective Bargaining Arrangements [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 19.00% Workforce Subject To Collective Bargaining Arrangements set to Expire within One Year [Member] Concentration Risk [Line Items] Concentration Risk, Percentage 16.00%

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document 12 Months Ended Segments - Additional Mar. 31, 2021 Information (Details) Mar. 31, 2020Mar. 31, 2019 USD ($) $ in Thousands USD ($) USD ($) Segment Segment Reporting Information [Line Items] Number of reportable segments | Segment 2 Loss on sale of assets and businesses $ 104,702 $ 56,916 $ 235,301 Net sales 1,869,719 2,900,117 3,364,930 Foreign Sales [Member] Segment Reporting Information [Line Items] Net sales 359,406 724,193 $ 960,299 Long-Lived assets in foreign countries 213,919 $ 205,243 Corporate [Member] Segment Reporting Information [Line Items] Loss on sale of assets and businesses $ 104,702

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Segments - Schedule of 1 Months 3 Months 12 Months Ended Selected Financial Ended Ended Information for Each Reportable Segment and Reconciliation of EBITDAP Jan. 31, Mar. 31, Mar. 31, Mar. 31, Mar. 31, to Operating Income 2021 2020 2021 2020 2019 (Details) - USD ($) $ in Thousands Segment Reporting Information [Line Items] Net sales to external customers $ $ $ 1,869,7192,900,117 3,364,930 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 173,197 305,784 215,418 Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (93,334) (138,168) (149,904) Interest expense and other, net (171,397) (122,129) (114,619) Corporate expenses (51,104) (53,082) (74,706) Share-based compensation expense (12,701) (11,062) (10,259) Loss on sale of assets and businesses (104,702) (56,916) (235,301) Amortization of acquired contract liabilities 38,564 75,286 67,314 Non-service defined benefit income 49,519 40,587 56,726 Legal judgment gain, net 9,257 Income before income taxes (448,029) (23,635) (332,572) Total capital expenditures 25,178 39,834 47,099 Total assets $ 2,980,333 2,450,9352,980,333 Impairment of long-lived assets $ (6,696) (252,382) (66,121) Union represented employee incentives (7,071) Impairment of goodwill (66,121) (66,121) Impairment of rotable inventory (23,689) Impairment of long-lived assets $ (6,696) (252,382) (66,121) Net sales 1,869,7192,900,117 3,364,930 Accounting Standards Update 2017-07 Reconciliation of segment profit to income (loss) before income taxes Loss on adoption of ASU 2017-07 (87,241) Systems & Support [Member] Segment Reporting Information [Line Items] Intersegment sales (eliminated in consolidation) 3,179 6,803 15,537 Reconciliation of segment profit to income (loss) before income taxes Amortization of acquired contract liabilities 15,062 34,486 Impairment of goodwill (66,121)

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Aerospace Structures [Member] Segment Reporting Information [Line Items] Intersegment sales (eliminated in consolidation) 1,474 6,531 6,948 Reconciliation of segment profit to income (loss) before income taxes Amortization of acquired contract liabilities 23,502 40,800 Corporate & Eliminations [Member] Segment Reporting Information [Line Items] Net sales to external customers (4,653) (13,334) (22,485) Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (3,459) (3,374) (3,100) Total capital expenditures 1,030 1,502 784 Total assets 481,162 536,003 481,162 Net sales (4,653) (13,334) (22,485) Operating Segments [Member] | Systems & Support [Member] Segment Reporting Information [Line Items] Net sales to external customers 1,056,8221,350,7611,309,474 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 155,693 205,352 202,346 Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (33,549) (32,376) (35,373) Total capital expenditures 15,239 17,141 15,734 Total assets 1,478,679 1,469,5931,478,679 Net sales 1,056,8221,350,7611,309,474 Operating Segments [Member] | Aerospace Structures [Member] Segment Reporting Information [Line Items] Net sales to external customers 812,897 1,549,3562,055,456 Segment profit and reconciliation to consolidated income before income taxes: Adjusted EBITDAP 17,504 100,432 13,072 Reconciliation of segment profit to income (loss) before income taxes Depreciation and amortization (56,326) (102,418) (111,431) Total capital expenditures 8,909 21,191 30,581 Total assets $ 1,020,492 445,339 1,020,492 Net sales $ $ $ 812,897 1,549,3562,055,456

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Subsequent Events - Mar. Additional Information May 18, Aug. 17, Mar. 31, 31, (Details) - USD ($) 2021 2020 2021 2020 $ in Thousands Senior Secured First Lien Notes Due 2024 [Member] Subsequent Event [Line Items] Debt instrument, redemption price, percentage 100.00% Long-term debt $ 700,000 Senior Secured First Lien Notes Due 2024 [Member] | Subsequent Events [Member] Subsequent Event [Line Items] Redemption of aggregate principal amount $ 112,500 Debt instrument, redemption price, percentage 106.656% Long-term debt $ 587,500 Senior Notes Due 2022 [Member] Subsequent Event [Line Items] Long-term debt $ 236,471 300,000 Redemption of aggregate principal amount $ 236,471 Debt instrument, redemption price, percentage 100.00% Assets Held for Sale Composites Manufacturing Operations [Member] | Subsequent Events [Member] Subsequent Event [Line Items] Proceeds from divestiture of business 155,000 Assets Held for Sale Composites Manufacturing Operations [Member] | Subsequent Events [Member] | Minimum [Member] Subsequent Event [Line Items] Loss due to curtailment 10,000 Assets Held for Sale Composites Manufacturing Operations [Member] | Subsequent Events [Member] | Maximum [Member] Subsequent Event [Line Items] Loss due to curtailment 20,000 Assets Held for Sale Composites Manufacturing Operations [Member] | Senior Secured First Lien Notes Due 2024 [Member] | Subsequent Events [Member] Subsequent Event [Line Items] Net proceeds used to redeem aggregate principal amount of first lien note $ 120,000

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Schedule II Valuation and 12 Months Ended Qualifying Accounts - Schedule of Valuation and Qualifying Accounts Mar. 31, 2021Mar. 31, 2020Mar. 31, 2019 (Details) - Deferred Tax Assets [Member] - USD ($) $ in Thousands Valuation And Qualifying Accounts Disclosure [Line Items] Balance at beginning of year $ 438,667 $ 399,013 $ 146,770 Additions charged to (income) expense 114,283 (3,474) 93,311 Other 15,223 43,128 158,932 Balance at end of year $ 568,173 $ 438,667 $ 399,013

Copyright © 2021 www.secdatabase.com. All Rights Reserved. Please Consider the Environment Before Printing This Document Schedule II Valuation and 12 Months Qualifying Accounts - Ended Schedule of Valuation and Qualifying Accounts - Mar. 31, 2019 Additional Information USD ($) (Details) ASC 606 [Member] Valuation And Qualifying Accounts Disclosure [Line Items] Adjustments relate to changes in defined benefit pension plan and other postretirement benefit $ 132,000 plan obligations

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