Investor Presentation

Company Overview

July 27, 2017 Forward Looking Statements

• This presentation contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including statements relating to our: (i) our belief that we are the only company to offer a holistic solution to environmental sound; (ii) our expectation that investments in high-end Enterprise solutions will improve revenue growth and increase margins; (iii) our expectation for Non-GAAP operating margins in the second quarter and second half of Fiscal Year 2018; (iv) our belief in our Consumer product lines going forward; (v) our belief that the sale of the Clarity division will be beneficial to our operating margins and allow us to focus our investments; (vi) our belief that Non-GAAP operating margins for Fiscal Year 2018 will improve over Fiscal Year 2017; (vii) our expectations regarding GN litigation expenses in Fiscal Year 2018 and beyond; (viii) expectations for UC, SaaS and Soundscaping (ix) estimates of GAAP and non-GAAP financial results for Q2 FY18, including net revenues, operating income, shares outstanding and diluted EPS; and (x) estimates of stock-based compensation, GAAP only tax changes and other related charges, as well as their impact on Non-GAAP operating income and diluted Q2 FY18 EPS in addition to other matters discussed in this presentation that are not purely historical data. Forward-looking statements involve risks and uncertainties that may cause actual results to differ materially from those contemplated by such statements. We do not assume any obligation to update or revise any such forward-looking statements, whether as the result of new developments or otherwise, except as required by applicable law.

• The factors that could cause actual results to differ are discussed in our Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on May 10, 2017, in our reports on Form 10-Q and Form 8-K filed with the SEC as well as our other public disclosures, including our press releases. Please also refer to the Safe Harbor included in our press release regarding our results for Q1 FY18 filed with the SEC on Form 8-K on July 27, 2017. The SEC filings and our press releases can be accessed on our website at investor.plantronics.com.

To supplement our condensed consolidated financial statements presented on a GAAP basis, we use non-GAAP measures of operating results, including non-GAAP operating income, non-GAAP net income and non-GAAP diluted EPS which exclude certain non-cash expenses and charges that are included in the most directly comparable GAAP measure. These non-cash charges and expenses include stock-based compensation related to stock options, restricted stock and employee stock purchases made under our employee stock purchase plan, purchase accounting amortization, accelerated depreciation, early lease termination charges, restructuring, asset impairments, and executive transition costs, all net of the associated tax impact. We also exclude tax benefits from the release of tax reserves, discrete tax adjustments including transfer pricing, tax deduction and credit adjustments, and the impact of tax law changes. We exclude these expenses from our non-GAAP measures primarily because Plantronics’ management does not believe they are part of our target operating model. We believe that the use of non-GAAP financial measures provides meaningful supplemental information regarding our performance and liquidity and helps investors compare actual results with our long- term target operating model goals. We believe that both management and investors benefit from referring to these non-GAAP financial measures in assessing our performance and when planning, forecasting and analyzing future periods; however, non-GAAP financial measures are not meant to be considered in isolation or as a substitute for, or superior to, gross margin, operating income, operating margin, net income or EPS prepared in accordance with GAAP. A reconciliation between GAAP and Non-GAAP measures for Q1 FY18 and prior year quarter is attached as an appendix to this document. Other historical reconciliations are available at investor.plantronics.com.

As a company with significant global operations and sales, fluctuations in foreign currency exchange rates may have a material effect on our reported results. Consequently, we also present supplemental metrics as identified in the reconciliation within this release “on a constant currency basis” which excludes the impact of currency exchange rate fluctuations. The constant currency presentation, which is a non-GAAP measure, is intended to supplement our reported operating results and, when considered in conjunction with the corresponding GAAP measures, facilitate a better understanding of changes in the metrics from period to period and the core operations of the Company. We calculate constant currency percentages by removing any hedge gains or losses from the particular metric in the current period and then converting our current period local currency financial results using the foreign currency exchange rates in effect during the prior year period and comparing these adjusted amounts to the corresponding current period metric.

• Revenue: $203.9M vs. $223.1M, 8.6% decline • Gross margin: 51.9% vs. 51.1%, 80 bps increase • Operating expenses: $68.9M vs. $75.2M, 8.5% decline • Operating income: $36.9M vs. $38.7M, 4.6% decrease • Operating income excluding GN litigation fees: $40.2M • Operating margin: 18.1% vs. 17.3%, 80 bps increase • Operating margin excluding GN litigation fees: 19.7% • Diluted earnings per share: $0.70 vs. $0.76, 7.9% decrease • $600M in cash, cash equivalents, and short & long term investments, $500M in Debt

• $12.9M in cash flow from operations and $9.8M in Free Cash Flow

• Improving profitability in all product categories

• Adapting and leading as the communications industry migrates to UC, UCaaS and CCaaS cloud solutions

• Monetizing the mega-trend of open office spaces and flexible work policies

• Maintaining our leadership in headsets and furthering our lead in software, analytics, and soundscaping

• We have accelerated our pace of innovation and have built a first-mover advantage in providing focused and distraction free work environments. Plantronics has a 50+ year history of adapting to changing markets and innovating for new opportunities. As the mega-trends of open office work places and flexible work policies change, Plantronics continues to transform itself to meet customers’ needs. • We are the only company to offer a holistic solution to environmental sound; addressing personal needs through adaptive headsets and broader workspace requirements with the launch of Habitat Soundscaping. Additionally, our software and analytic tools allow both the individual and the IT department to monitor and actively adapt to changing workspace challenges. • We are in the midst of a significant corporate transformation as we move to new opportunities beyond headsets: to software, analytics and soundscaping. • We’ve built a corporate infrastructure to support new products, new channels and new ways of selling. We are improving product development processes to accelerate time-to-market in both Enterprise and Consumer as well reducing costs, and transforming as the markets shift from on-premises to in-the-cloud solutions. • Our investments in high-end Enterprise solutions are expected to improve revenue growth and improve margins. Through recent new product introductions and a robust pipeline, our Enterprise product portfolio increasingly incorporates advanced adaptive audio systems with unique algorithms and noise cancellation technology to deliver reliable professional communications. • We remain committed to improving our Non-GAAP operating margin in Fiscal Year 2018, with a long term goal of 20% to 23%. • We believe our Non-GAAP operating margins for Fiscal Year 2018 will show improvement over Fiscal Year 2017, excluding GN litigation expenses.

• Net revenues for the first quarter were $204 million, below our guidance of $211 million to $221 million • We experienced a larger than expected decline in Consumer stereo revenues as well as market factors that weakened demand in Enterprise. Additionally, the weakening of the GBP and EUR negatively impacted revenue by approximately $3 million, net of hedging. • We experienced larger than expected declines in Consumer revenues as we transition our stereo product line to newer, more profitable products. • We remain focused on profitable growth in Consumer and have a solid pipeline of products for the holiday season. We are investing in products which incorporate our competencies in communications-first and audio quality which leverages our expertise in Enterprise product offerings. • We believe our portfolio and pipeline of Mono, Stereo, and Gaming products is one of the best we've ever had. • Our revenues from UC products continued double digit growth and we experienced our best growth in product groups with highly differentiated features which target noise in the open office environments. • We remain the leader in this category and continue to expect that it will be the key driver of revenue growth for Plantronics over the next several years. Our margins in this market remain stable and the Plantronics value proposition is stronger than ever with the addition of our differentiated software which helps IT manage their UC installations globally.

$865 $857 $881 $819 $762 $713 $246 $230 $253 $684 $231 $213 $181 $193

$588 $619 $627 $629 $532 $549 $491 $204 $49

$155

FY2011 FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 Q1 2018 Enterprise Consumer

(1) Fiscal year ends March 31st

$233 $223 $216 $209 $204

$67 $76 $62 $48 $49

$156 $154 $157 $161 $155

Q1 FY17 Q2 FY17 Q3 FY17 Q4 FY17 Q1 FY18

Enterprise Consumer Total (1) Fiscal year ends March 31st

Revenue by Product Group Revenue by Geography 12.6% Increase 26.6% 8.9% Americas Decline Decrease Excl. US $16.4MM Consumer Asia Pacific $49.3 MM $23.9MM

United States 15.1% Europe $108.8MM Decline Enterprise & Africa $154.6 MM 1.4% $54.8MM Increase 0.8% Decline

$203.9 Million Total Revenue

Non-GAAP Target Model* Q1 FY18** Gross Margin 50 – 52% 51.9% R & D 8 – 10% 9.3% S, G & A 21 – 23% 24.5% Operating Margin 20 – 23% 18.1%

* This target model is not a projection for FY18 or any other particular quarter or fiscal period. **Non-GAAP for the first quarter of Fiscal Year 2018 does not include expenses related to stock-based compensation, restructuring and other related charges (credits), loss on sale of assets, impairment of indirect tax asset, and purchase accounting amortization

• Net revenues of $200 million to $210 million

• GAAP operating income of $23 million to $28 million

• Non-GAAP operating income of $32 million to $37 million, excluding the impact of $9 million from stock- based compensation

• Assuming approximately 33 million diluted average weighted shares outstanding:

• GAAP diluted EPS of $0.47 to $0.57

• Non-GAAP diluted EPS of $0.61 to $0.71

• Cost of stock-based compensation and GAAP only related tax charges to be approximately $0.14 per diluted share.

Plantronics does not intend to update these targets during the quarter or to report on its progress toward these targets. Plantronics will not comment on these targets to analysts or investors except by its press release announcing its second quarter fiscal year 2018 results or by other public disclosure. Any statements by persons outside Plantronics speculating on the progress of the second quarter fiscal year 2018 will not be based on internal company information and should be assessed accordingly by investors.

Plantronics headsets never failed, either in space or on “That’s one small step the ground. Which was why Plantronics was the only supplier for man, one giant leap for NASA specified by name. – Gene Krantz (1) mankind.” – Neil Armstrong

(1) NASA Flight Director during the Gemini and Apollo programs

…to Business-Critical It is imperative that our remote workers have equipment that allows them“ to be productive. They rely heavily on their headsets and if the sound quality is bad, it is a poor reflection on our company. No one wants to call a Fortune 100 Company like ours and have difficulty hearing the rep. - IT Professional, Fortune 500 Insurance Company

Plantronics has been a proven technology in our environment. They are consistent, innovative, and allow our employees to be productive away from their office. - IT Systems Administrator, Regis University

© Plantronics 2017. All Rights Reserved. 16 Premier Intuitive Intelligence Acoustic Technology Design Built In • Pioneer in digital signal • Award-winning design team • Smart sensor technology processing • Pioneer in materials, fit automatically directs audio to • Over 400 engineers and comfort and from mobile phones and other communications devices • Over 800 patents • Experts in human behavior, (e.g. tablets and computers) anatomy, ergonomics • Voice commands & audible alerts

Our Foundations of Excellence© Plantronics 2016. All Rights Reserved. 17 Technology Leader TECHNOLOGY INTELLECTUAL PROPERTY • Over 400 engineers – Jaap Haartsen: Inventor of Bluetooth and inductee 803 Granted Patents 119 Pending Patents to the National Inventors Hall of Fame • Investment in analytical and psycho-acoustics • Advanced acoustics labs 223 Utility 580 Design • Pioneers in digital signal processing • Focus on products incorporating transformational technologies KEY PATENTS • Q1’18 R&D investment of $19MM, or 9% of revenue (1) • Safety: protect wearers from noise spikes and improving sounds in noisy environments – Acoustic Signal Level Limiter – Headset Noise Exposure Dosimeter • Simplicity: control calls across devices – Call Control Across Multiple Interfaces – Automatic Headset Hookswitch • Comfort: conform ear tips to wearers – Conformable Ear Tip with Spout • Utility: control devices based on proximity and usage – Automatic Device Use Detection – Automatic Proximity Detection

(1) Reconciliation of non-GAAP measures is contained in Appendix

STRATEGIC INVESTMENTS IN MANUFACTURING On-time • Plamex facilities (Tijuana, Mexico) Shipments • Capex investment: $33MM • Facilities: 795,409 square ft. 94% Number of • Associates: approximately 2,300 Distributors/ Direct Customers • Products: More than 16,000 • Import/export transactions: >5,000 per year 500 • Competitive advantage as a result of lower labor costs • Improved time-to-market Countries Shipped to Distribution Centers GLOBALLY RECOGNIZED MANUFACTURER 80 National National Export National 7 Quality Award Award Technology Award

National Logistics Award National Labor Award Manufacturing Comprehensive Serialization Execution Platforming Systems

Enterprise Consumer

Resellers Distributors / Retailers Mobile Distributors

15,750 Global Partners

Tame Communications Chaos In the Zone Smarter Customer Interactions

• Simple connectivity to all • Customize user experience • Ability to capture key data about communications devices and while driving, communications, customer interactions applications concentrating, gaming, and • Smart QD feature for smarter call routing and protecting sensitive on-screen • Devices that inform users and exercising information IT about sound quality • Selectively block distractions • Acoustic Event Capture to record attributes of a negative audio experience • Unified notifications • Headset diagnosis to pinpoint audio degradation

• Excellent market position Unified • Represents our largest revenue & growth opportunity Communications • UC growth solid but slower than initially thought

• Opportunity to leverage data to provide insights SaaS • Simplify and increase management capabilities

• Significant opportunity Soundscaping • Leverages our excellence in active & passive sound reduction

Data, Video with Presence Information • Uses software to unify the ways people communicate and makes those communications easily accessible from everyday apps • Enables intelligence workers to interact and collaborate easily from the device and location of their choice • Simplifies communications in business settings and improves efficiency

Collaboration (App & Document Sharing)

Contact IP Telephony Center Unified Communications

Mobility Instant Messaging Unified Messaging Conferencing & Presence (Email and Voice) (Web, Voice, Audio)

FOR IT

• Lower management costs FOR USERS • Headset diagnosis with • Simplicity central software • One headset for: – Multiple devices FOR PLANTRONICS – Multiple apps • Higher Enterprise revenue – Virtually all UC software growth FOR ENTERPRISE – Attach rate growth from 6% to 60% • Faster cycle time – Higher recurring revenue via • Lower telecom expense replacement sales • Lower real estate costs • Ability to provide intelligence • Smarter meetings for higher value add

Durable metal headband with comfort pad and Three precisely tuned pillow-soft ear cushions microphones cancel for max comfort background sounds Active & passive noise Mute/open mic canceling reduces button ambient noise

Online indicator light and call answer/end Volume, track forward/back

ANC on/off

Magnetics USB mini-adapter with MSRP desktop charging mute indicator ensures $299 stand great PC audio B825 B825-M

• Works seamlessly across laptops, Bluetooth- enabled mobile phones/tablets and desk phones • Up to 150 feet of wireless range from PC while preserving battery life • Precision tuned triple-mics with enhanced DSP for superior background noise canceling on calls • Smart sensors answer calls by simply putting on the headset, mute by taking the headset off or pause/resume music • Enhanced voice alerts announce caller ID, mute and connection status, talk time level • OpenMic button allows you to hear your surroundings when you need to • Up to 12 hour talk time, 15 Hours of music streaming

• Dedicated mute button for quick mute access • Voice alert announces mute on/off status; mute status also displays red on USB adapter & PC • First to market Dynamic Mute Alert feature senses and alerts you when you try to talk when muted • Headset automatically goes on mute when headset is taken off; unmutes when put back on

Dynamic Mute Alert

MAKES LIFE BETTER FOR IT MANAGERS INCREASES VALUE TO END USERS

• Schedule and deploy configuration and firmware updates Text– Allowshere IT to remotely manage headsets; test newly • Text“Smart here Presence” released features, update devices (IT controls all updates) – Updates users’ UC client status message while in a mobile phone call • Asset/Inventory management – Allows visibility into total array of deployed headsets • Settings management and headset environment; issues can be identified and – Allows users to easily customize their resolved quickly headset for personal preferences • Reporting • Notifications – Standard reports to allow IT professionals to better – Provides information about mute manage their deployments (e.g., usage reports can help status and battery meter on both a identify users who might need assistance) PC and a mobile phone • APIs for developers to add value – Customize reports to meet specific business needs

PLANTRONICS MANAGER PLANTRONICS HUB Manager is a cloud-based client/server headset A client application that allows end users to control the management application for IT that makes it easy to deploy settings on their Plantronics audio device to customize their and manage Plantronics audio devices while storing related ringtone and ring location, configure presence updates and data in an on-premise application infrastructure. more. Hub also acts as the cloud relay for Manager Pro.

PLANTRONICS MANAGER PRO Plantronics Manager Pro is cloud-based management software that, enables IT staff with easy ways to monitor, manage, and maintain their audio device environment. Now, IT can gain insights, simplify headset adoption, and troubleshoot and respond to individual needs with no interruptions to the customer experience, all from one place. Plantronics Manager Pro is also available as a manager service through select Plantronics channel partners as a managed service offering.

Significant New Features and Enhancements • 3 New Analytical Entitlement Library Suites with 7 New Reports • MUCH Simplified Deployment of Plantronics Hub (Windows) • Policy-Based Management of Settings and Updates • Role Simplification • Improved Communication with Enterprise IT Managers (EIT) • Initial Support for Partner Integrations

PMP 3.8 PMP V3.9 WITH NEW SUITES – RELEASED ON JANUARY 25, 2017 ANNOUNCED MAY 2016

UC Asset Analysis Usage Analysis Conversation Analysis Acoustic Analysis

Find out what Hub supported Understand device usage Improve quality of agent Review history of acoustic softphones are used and what patterns including headset calls conversations and customer events that occur during versions. Know how many made/received and duration. experience by identifying % of conversations using unsupported configurations exist. time agent vs customer speech Plantronics products. + overtalk & silence.

For UC / CC deployments with IP telephony and PLT USB Devices For CC deployments with IP telephony DA Devices Only

Significant New Features and Enhancements • Includes a Link quality report for a broader range of devices and our top UC products - Allows IT to identify audio issues right to the supported headset, for quicker and more accurate troubleshooting

• Provides insight to the customer on wireless environment, including interference, latency, and density issues

• We have provided an open data API to include data in business processes and support for popular Virtual Desktop Infrastructure

IN THE OFFICE… ...AND OUT

• More open office plans with fewer • Crowded cafes noise-blocking walls and private • Busy airports offices • Cabs stuck in traffic • Less privacy, more distractions and noise • Absence of sound-absorbing carpet and acoustic tile

• Voyager 8200 UC works seamlessly across all Bluetooth® audio devices • Smart sensors answer calls when headset is put on, mute and pause music when taken off • Enhanced voice alerts announce caller ID, mute, connection status • Listen time of up to 24 hours, while a 3.5mm audio cable is ideal for in-flight use

Contemporary style All-day comfort Boomless design looks and Soft, durable, leatherette ear sounds great cushions cover ears

Active noise canceling Dedicated mute button “Dual mode” settings to adjust For worry-free mute assurance noise reduction for user’s needs and Open Listening Mode

Voice clarity Included accessory Dual-paired microphone Carrying case for easy design focuses storage and portability on user’s voice

• Designed and tested for all-day comfort • Easy to put on and take off • Range of up to 98 feet / 30 meters • Enhanced voice alerts • Virtual Personal Assistant (VPA) • Simple voice commands • NFC pairing • BT600 storage

• Work seamlessly across smartphones, laptops, and tablets • Precision tuned triple-mic with enhanced DSP • Wideband audio • SoundGuard® technology • Smart sensors auto-manage calls • Up to six hours of non-stop talk • 10-hour portable charge case

Introducing

SOUNDS SIGHTS INTELLIGENCE

225 70% 220 OF AMERICAN WORK 210 EMPLOYEES 200

OUT OF OFFICES 190 WITH 180 176

Global Office Space 170

AN OPEN per worker feet Square Avg. 160 151 FLOOR PLAN 150 2010 2011 2012 2013 2014 2015 2016 2017

Source: IFMA Source: Corenet Global

of employees are disturbed by others 53% when trying to focus

as likely to take sick days in open offices 2X when compared to traditional offices.

Going away as offices move to denser plans, use Absorption reflective materials like glass and wood that are appealing/eco friendly.

Blocking The walls are coming down; open offices want flow.

AKA sound masking. This has some serious problems. Cover The white/pink noise played can be fatiguing and uncomfortable, with complaints of headaches common.

Naturally Mitigating Pleasant biophilic acoustics reduce speech intelligibility

Wide Dispersion Speakers Provide subtle audio over a broad area

Audio Controls Enable precise volume and frequency adjustment

Manage multiple spaces Supports zones and schedules based on workplace density

Health check Monitors speakers and mics for optimal performance

Cloud based Simplified management suite

Enterprise: Contact Center: UC: Blackwire Family EncorePro Family Savi Family

• Active noise cancelling • Advanced soft ear cushions for all • Smart Presence across • Smart Presence and support for day comfort multiple devices virtually all UC platforms • Enhanced noise-canceling and • Multiple wearing styles • Smart sensors: answer calls simply by wideband audio for clearer • Most secure Digital Enhanced Cordless putting on the headset conversations Telecommunications device on • Dynamic Equalizer and Digital Signal • Ultra-lightweight design the market Processing for natural sound • SoundGuard controls noise • Connectivity to PC, tablet, smartphone level exposure and deskphone

Voyager Family

Voyager Legend UC Blackwire Family Voyager Edge UC

Voyager 5200 UC Voyager Focus UC Savi Family

EncorePro Family Savi Family

Audio Processors Wireless Solutions

DA Series M22 CS500 Series

Voyager 5200 + Charge Case* Voyager Legend

Voyager Edge Explorer 500

* Charge Case sold separately.

BackBeat PRO 2 BackBeat FIT

BackBeat SENSE BackBeat GO 3 + Case

RIG 500 Series* RIG 600

RIG 800 Series*

RIG 400 Series* RIG 4VR

* RIG 400, 500, 800 Series have HX for Xbox One and HS for PS4. RIG 500 Series has 500HD for Surround Sound PC and 500E for e-sports edition, PC/Console.

($ Millions) Last 10+ Years (FY2006 – Q1’18) (1)

Share Repurchases $1,290

Dividends $173

Total Value Returned to Shareholders $1,464 Total Return of Capital to Shareholders 123% (% of Free Cash Flow)

60% Free Cash Flow return of capital target well within historical levels

(1) Fiscal year ends March 31st

Revenue ($MM) EBITDA ($MM) and Margin (%) (2)

$197 $865 $881 $181 $183 $819 $857 $173 $173 $175 $178 $762 $684 $713 $614 $135

25.3% 24.3% 22.1% 23.0% 22.1% 22.8% 20.7% 20.7% $204 $43

20.9%

(1) Fiscal Year Ends March 31st (2) Reconciliation of non-GAAP measures is contained in Appendix

Capex ($MM) Free Cash Flow ($MM) (2)

$140 $132 $51 $121 $116 $115 $39 $86 $91 $31 $22 $19 $19 $20

$6 $3 $10

(1) Fiscal Year Ends March 31st (2) Reconciliation of non-GAAP measures is contained in Appendix

© Plantronics 2017. All Rights Reserved. 60 Robust Liquidity Profile (1) $607 $600 $600 $541 $483 $127 $112 $500 $469 $435 $39 $425 $146 $369 $390 $108 $400 $80 $100 $55 $300 $242 $24 $480 $487 $200 $430 $395 $369 $335 $345 $335 $375 $100 $218

$0 FY2009 FY2010 FY2011 FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 Q1FY18 Cash, Cash Equivalents, and Short-Term Investments Long-Term Investments • Q1FY18 Onshore Cash Balance: $48.0M • Q1FY18 Offshore Cash Balance: $559.3M – 90% of offshore cash is denominated in U.S. dollars – Offshore cash unencumbered by operations • Revolver Capacity: $100M • Minimum Domestic Cash Balance Needed to Run Operations: $10M to $20M

(1) Fiscal year ends March 31st

$881 $865 $857 $819 $850 14.9% $762 $713

$650 9.9%

$450

6.2% 4.9% $250 5.1% $204 3.6% 2.7% 2.5% 2.6% 1.5% $50 (0.1%) FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 Q1 FY2018 Revenue Capex %

* This target model is not a projection for FY18 or any other particular quarter or fiscal period.

© Plantronics 2017. All Rights Reserved. 62 Stable Working Capital Requirements Q1 ($ Millions) FY2013 FY2014 FY2015 FY2016 FY2017 FY2018 Cash and Cash $228.8 $232.7 $276.9 $235.3 $302.0 $290.5 Equivalents Accounts Receivable $128.2 $138.3 $136.6 $128.2 $141.2 $135.0 Inventory $67.4 $57.1 $56.7 $53.2 $55.5 $57.6 Accounts Payable $37.1 $30.8 $32.8 $39.1 $42.9 $43.6 Working Capital $463.0 $458.7 $507.8 $487.8 $580.0 $612.7 Working Capital as a % of 59.1% 56.3% 55.9% 57.6% 60.6% 64.0% Sales (1) (1) Working Capital as a % of Sales is defined as the average working capital balances (current assets less current liabilities) over the previous year divided by annual sales.

($ Millions) March 31, 2015 March 31, 2016 March 31, 2017 June 30, 2017 Assets Cash and Cash Equivalents $276.9 $235.3 $302.0 $290.5 Short-Term Investments $97.9 $160.1 $178.2 $197.0 Accounts Receivable $136.6 $128.2 $141.2 $134.8 Inventory $56.7 $53.2 $55.5 $57.6 Other $34.6 $20.2 $22.1 $35.5 Total Current Assets $602.7 $597.0 $699.0 $715.4 Long-Term Investments $107.6 $145.6 $127.2 $112.1 Property, Plant, and Equipment $139.4 $149.7 $150.3 $148.8 Goodwill and Other $26.3 $41.1 $40.7 $33.7 Total Assets $876.0 $933.4 $1017.2 $1010.0 Liabilities and Stockholder’s Equity Accounts Payable and Other Current $94.8 $109.2 $119.0 $102.6 Liabilities Revolving Line of Credit $34.5 ------Notes Payable, net -- $489.6 $491.1 $491.4 Other Long-Term Liabilities $19.3 $22.2 $24.9 $27.6 Stockholder’s Equity $727.4 $312.4 $382.2 $388.4 Total Liabilities and Stockholder’s $876.0 $933.4 $1017.2 $1010.0 Equity

($ Millions) FY2010 (2) FY2011 FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 Q1 FY2018

GAAP Operating Income $97.6 $140.7 $141.4 $138.1 $140.1 $149.1 $108.0 $125.1 $23.4

Stock-Based Compensation $13.7 $15.9 $17.5 $18.3 $23.2 $28.6 $33.3 $33.5 $9.3

Executive Transition Costs ------$2.8 -- Restructuring and Other Related $1.9 ($0.4) -- $2.3 $0.5 -- $16.2 ($0.1) $2.6 Charges Loss on Sale of Assets ------$0.9 Impairment of Indirect Tax Asset ------$0.7 Accelerated Depreciation $5.2 -- -- $1.7 $0.5 ------

Lease Termination Charges ------$1.5 ------

Purchase Accounting $1.2 $2.6 $0.3 -- $0.3 $0.2 $0.2 $0.2 -- Amortization

Non-GAAP Operating Income $119.6 $158.8 $159.2 $160.4 $166.1 $177.9 $157.7 $161.5 $36.9

(1) Fiscal year ends March 31st (2) Pro forma for the divestiture of Plantronics Audio Entertainment Group (AEG) segment

(2) (1) Q1 ($ Millions) FY2010 FY2011 FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 FY2018

GAAP Operating Income $97.6 $140.7 $141.4 $138.1 $140.1 $149.1 $108.0 $125.1 $23.4

Stock-Based Compensation $13.7 $15.9 $17.5 $18.4 $23.2 $28.6 $33.3 $33.5 $9.3

Executive Transition Costs ------$2.8 --

Restructuring and Other Related (3) $7.1 ($0.4) -- $2.3 $0.5 -- $16.1 ($0.1) $2.6 Charges

Loss on Sale of Assets ------$0.9

Impairment of Indirect Tax Asset ------$0.7

Lease Termination Charges ------$1.5 ------

Depreciation & Amortization (4) $17.0 $16.4 $14.5 $16.6 $15.7 $19.3 $20.3 $21.5 $5.8

Adjusted EBITDA $135.4 $172.6 $173.4 $175.4 $181.0 $197.0 $177.7 $182.6 $42.7

(1) Fiscal year ends March 31st (2) Pro forma for the divestiture of Plantronics Audio Entertainment Group (AEG) segment (3) Includes $5.2MM in accelerated depreciation expense (4) Includes loss on disposal of fixed assets

Q1 ($ Millions) FY2010 FY2011 FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 FY2018

Cash Provided by Operating $143.7 $158.2 $140.4 $125.5 $141.5 $154.4 $146.9 $138.0 $12.9 Activities

Capital Expenditures ($6.2) ($18.5) ($19.1) ($39.3) ($51.0) ($22.0)(2) ($30.7) (3) ($23.2) ($3.1)

Free Cash Flow $137.5 $139.7 $121.3 $86.2 $90.5 $132.4 $116.2 $114.8 $9.8

(1) Fiscal year ends March 31st (2) Excludes $2.1MM in capital expenditures for which cash payment has not yet been remitted (reflected in Accounts Payable balance) (3) Includes $0.3MM in capital expenditures which were acquired in FY15 but for which cash payment was remitted in FY16

FY2009 FY2010 Q1 ($ Millions) FY2011 FY2012 FY2013 FY2014 FY2015 FY2016 FY2017 (2) (2) FY2018

GAAP R&D $63.8 $57.8 $63.2 $69.7 $80.4 $84.8 $91.6 $90.4 $88.3 $21.2

Stock-Based Compensation ($3.5) ($3.3) ($3.8) ($3.9) ($4.8) ($6.4) ($8.1) ($9.9) ($8.6) ($2.2)

Accelerated Depreciation ------($0.7) ($0.2) ------

Purchase Accounting ($0.2) ($0.1) ($0.1) -- -- ($0.2) ($0.2) ($0.2) ($0.2) -- Amortization

Non-GAAP R&D $60.1 $54.4 $59.3 $65.7 $74.8 $78.0 $83.3 $80.3 $79.5 $19.0

(1) Fiscal year ends March 31st (2) Pro forma for the divestiture of Plantronics Audio Entertainment Group (AEG) segment

Net Revenues (in millions) by Region by Product Category Consolidated Americas E&A APAC Enterprise Consumer Net Revenues as reported (GAAP) $203.9 $125.2 $54.8 $23.9 $154.6 $49.3 Excluding Hedge Gains (0.1) - (0.1) - - (0.1) Impact of YoY Fx Movements 3.2 (0.1) 3.1 0.2 2.2 1.0 Constant Currency Revenues (Non-GAAP) $207.0 $125.1 $57.8 $24.1 $156.8 $50.2

Gross Profit (in millions) ($) (%) Operating Expenses (in millions) Gross Profit as reported (GAAP) $103.3 50.7% Operating Expenses as reported (GAAP) $79.8 Stock-based compensation 0.9 Stock-based compensation & Purchase accounting (8.3) Loss on sale of assets 0.9 amortization Impairment of indirect tax asset 0.7 Non-GAAP Gross Profit $105.8 51.9% Restructuring and other related charges (2.6) Excluding Hedge (Gain)/Loss, net 0.1 Non-GAAP Operating Expenses 68.9 Impact of YoY Fx Movements 2.7 Impact of YoY Fx Movements 1.1 Constant Currency Gross Profit (Non- $108.6 52.4% GAAP) Constant Currency Operating Expenses (Non-GAAP) $70.0

Operating Income (in millions) ($) (%) Diluted Earnings per Common Share ("EPS") Operating Income as reported (GAAP) $23.4 11.5% Diluted EPS (GAAP) $0.57 Stock-based compensation & Purchase 9.3 Stock-based compensation 0.28 accounting amortization Restructuring and other related charges 0.08 Restructuring and other related charges 2.6 Loss on sale of assets 0.03 Loss on sale of assets 0.9 Impairment of indirect tax asset 0.02 Impairment of indirect tax asset 0.7 Income Tax Effect (0.28) Non-GAAP Operating Income $36.9 18.1% Non-GAAP Diluted EPS $0.70 Excluding Hedge (Gain)/Loss, net 0.1 Excluding Hedge (Gain)/Loss, net of tax 0.07 Impact of YoY Fx Movements 1.5 Impact of Fx Movements, net of tax (0.02) Constant Currency Operating Income (Non- $38.5 18.6% Constant Currency Diluted EPS (Non-GAAP) $0.75 GAAP)