Use these links to rapidly review the document TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ____________________________________________________________________________ Form 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2018 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 000-23354 FLEX LTD. (Exact name of registrant as specified in its charter) Singapore (State or other jurisdiction of Not Applicable incorporation or organization) (I.R.S. Employer Identification No.) 2 Changi South Lane, Singapore 486123 (Address of registrant's principal executive offices) (Zip Code) Registrant's telephone number, including area code (65) 6876-9899 Securities registered pursuant to Section 12(b) of the Act: Title of Each Class Name of Each Exchange on Which Registered Ordinary Shares, No Par Value The Nasdaq Global Select Market 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 ý No o Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes o No ý 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 ý No o Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted 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 and post such files). Yes ý No o Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. o Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See definitions of "large accelerated filer," "accelerated filer", "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act. Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting company o Emerging growth company o 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. o Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No ý As of September 29, 2017, the aggregate market value of the Company's ordinary shares held by non-affiliates of the registrant was approximately $8.8 billion based upon the closing sale price as reported on the Nasdaq Global Select Market. Indicate the number of shares outstanding of each of the registrant's classes of common stock, as of the latest practicable date. Class Outstanding at June 8, 2018 Ordinary Shares, No Par Value 528,282,247 DOCUMENTS INCORPORATED BY REFERENCE Document Parts into Which Incorporated Proxy Statement to be delivered to shareholders in connection with the Registrant's 2018 Part III Annual General Meeting of Shareholders Table of Contents TABLE OF CONTENTS Page PART I Forward-Looking Statements 3 Item 1. Business 3 Item 1A. Risk Factors 13 Item 1B. Unresolved Staff Comments 27 Item 2. Properties 27 Item 3. Legal Proceedings 28 Item 4. Mine Safety Disclosures 28 PART II Item 5. Market for Registrant's Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities 29 Item 6. Selected Financial Data 32 Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 33 Item 7A. Quantitative and Qualitative Disclosures About Market Risk 49 Item 8. Financial Statements and Supplementary Data 50 Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 102 Item 9A. Controls and Procedures 102 Item 9B. Other Information 107 PART III Item 10. Directors, Executive Officers and Corporate Governance 107 Item 11. Executive Compensation 107 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters 107 Item 13. Certain Relationships and Related Transactions, and Director Independence 107 Item 14. Principal Accountant Fees and Services 107 PART IV Item 15. Exhibits and Financial Statement Schedules 108 Item 16. Form 10-K Summary 108 Exhibit Index 108 Signatures 112 2 Table of Contents PART I FORWARD-LOOKING STATEMENTS Unless otherwise specifically stated, references in this report to "Flex," "the Company," "we," "us," "our" and similar terms mean Flex Ltd. and its subsidiaries. Except for historical information contained herein, certain matters included in this annual report on Form 10-K are, or may be deemed to be forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934 and Section 27A of the Securities Act of 1933. The words "will," "may," "designed to," "believe," "should," "anticipate," "plan," "expect," "intend," "estimate" and similar expressions identify forward-looking statements, which speak only as of the date of this annual report. These forward-looking statements are contained principally under Item 1, "Business," and under Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations." Because these forward-looking statements are subject to risks and uncertainties, actual results could differ materially from the expectations expressed in the forward-looking statements. Important factors that could cause actual results to differ materially from the expectations reflected in the forward-looking statements include those described in Item 1A, "Risk Factors" and Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations." In addition, new risks emerge from time to time and it is not possible for management to predict all such risk factors or to assess the impact of such risk factors on our business. Given these risks and uncertainties, the reader should not place undue reliance on these forward-looking statements. We undertake no obligation to update or revise these forward-looking statements to reflect subsequent events or circumstances. ITEM 1. BUSINESS OVERVIEW We are a globally-recognized, provider of Sketch-to-Scale tm services - innovative design, engineering, manufacturing, and supply chain services and solutions - from conceptual sketch to full-scale production. We design, build, ship and service complete packaged consumer and enterprise products, from athletic shoes to electronics, for companies of all sizes in various industries and end-markets, through our activities in the following segments: • Communications & Enterprise Compute ("CEC"), which includes our telecom business of radio access base stations, remote radio heads, and small cells for wireless infrastructure; our networking business which includes optical, routing, broadcasting, and switching products for the data and video networks; our server and storage platforms for both enterprise and cloud-based deployments; next generation storage and security appliance products; and rack level solutions, converged infrastructure and software-defined product solutions; • Consumer Technologies Group ("CTG"), which includes our consumer-related businesses in connected living, wearables, gaming, augmented and virtual reality, fashion and apparel, and mobile devices; and including various supply chain solutions for notebook personal computers, tablets, and printers; • Industrial and Emerging Industries ("IEI"), which is comprised of energy including advanced metering infrastructure, energy storage, smart lighting, electric vehicle infrastructure, smart solar energy, semiconductor and capital equipment, office solutions, industrial, home and lifestyle, industrial automation, and kiosks; and • High Reliability Solutions ("HRS"), which is comprised of our health solutions business, including consumer health, digital health, disposables, precision plastics, drug delivery, diagnostics, life sciences and imaging equipment; our automotive business, including vehicle electrification, connectivity, autonomous vehicles, and clean technologies. These segments represent components of the Company for which separate financial information is available that is utilized on a regular basis by the Chief Operating Decision Maker (“CODM”). Our segments are determined based on several factors, including the nature of products and services, the nature of production processes, customer base, delivery channels and similar economic characteristics. Refer to note 20 to the consolidated financial statements in Item 8, "Financial Statements and Supplementary Data" for additional information on our operating segments. We provide our