| B. Riley Capital Management, LLC +4 co-filersSee Footnote 1, 10% owner · 28 transactions | — | 22.65M†as of Apr 2020 | — | 4.20M | 969.9K |
| Fichthorn JohnDirector, 10% owner · 9 transactions | — | 11.05M† | 3.12M | 30.0K | 969.9K |
| Dialectic Technology SPV LLC10% owner · 2 transactions | — | 11.02M | 3.08M | — | — |
| Feld Peter A +2 co-filersReporting owner · 32 transactions | — | 8.94M†as of Dec 2016 | — | — | 18.18M |
| B. Riley Capital Management, LLC +4 co-filers10% owner · 5 transactions | — | 8.22Mas of Apr 2020 | — | 192.6K | — |
| Riley Bryant R +5 co-filers10% owner · 2 transactions | — | 7.65M†as of Apr 2021 | — | — | 940.0K |
| Starboard Value & Opportunity Master Fund LTD +8 co-filersReporting owner · 32 transactions | — | 7.52M†as of Dec 2016 | — | — | 18.18M |
| B. Riley Capital Management, LLC +6 co-filers10% owner · 5 transactions | — | 4.53M†as of Jan 2019 | — | 162.8K | — |
| Singer EricDirector, 10% owner · 2 transactions | — | 3.78M†as of Sep 2019 | 70.8K | — | — |
| Singer Eric +6 co-filersDirector, 10% owner, 10% owner · 1 transaction | — | 3.71M†as of Dec 2017 | 16.7K | — | — |
| B. Riley Capital Management, LLC +6 co-filers10% owner · 8 transactions | — | 3.53Mas of Jan 2019 | — | 2.35M | — |
| Singer Eric +6 co-filersSee Explanation of Responses · 3 transactions | — | 3.40M†as of Dec 2019 | — | — | 360.0K |
| Feld Peter A +9 co-filers10% owner · 6 transactions | — | 2.67Mas of Apr 2013 | — | 2.67M | — |
| Breard Linda M.Chief Financial Officer · 13 transactions | — | 958.6Kas of Jul 2015 | 990.8K | — | — |
| Powers Gregg JDirector · 7 transactions | — | 931.9K†as of Apr 2017 | 345.4K | 100.0K | — |
| Dodson J MichaelSenior Vice President, CFO · 31 transactions | — | 870.4Kas of Oct 2022 | 1.02M | 100.0K | 270.2K |
| Stinson Theodore A.SVP, Worldwide Sales · 10 transactions | — | 739.8Kas of Jul 2013 | 350.0K | 55.0K | — |
| Pacific Investment Management Co LLC10% owner · 13 transactions | — | 626.6K†as of Apr 2025 | — | — | 1.19M |
| Lee Janae S.SVP, Strategy · 13 transactions | — | 525.5Kas of Jul 2015 | 800.6K | — | 170.0K |
| Belluzzo RichardDirector · 61 transactions | — | 484.1Kas of Aug 2012 | 2.77M | 100.0K | 1.68M |
| Roberson David EarleDirector · 8 transactions | — | 431.8Kas of Apr 2017 | 431.8K | — | — |
| Gacek Jon WPresident and CEO · 58 transactions | — | 407.2Kas of Oct 2017 | 4.28M | 120.0K | 355.1K |
| Krall DavidDirector · 6 transactions | — | 394.9Kas of Mar 2017 | 394.9K | — | — |
| Hurley JohnChief Revenue Officer · 5 transactions | — | 341.5Kas of Sep 2023 | 425.0K | — | 93.7K |
| Brown Michael A/CADirector · 7 transactions | — | 326.3Kas of Sep 2013 | 252.5K | — | — |
| Rothman Marc EDirector · 10 transactions | — | 297.6Kas of Sep 2022 | 219.7K | 20.0K | — |
| Willis Christopher ShawnInterim CFO · 1 transaction | — | 294.8Kas of Feb 2016 | — | — | — |
| Dinardo LouisDirector · 5 transactions | — | 285.4Kas of Mar 2017 | 295.4K | — | — |
| King ElizabethChief Revenue Officer · 13 transactions | — | 285.1Kas of Jul 2021 | 355.0K | — | 80.1K |
| Esber Edward MDirector · 20 transactions | — | 268.6K†as of Apr 2011 | 216.6K | 112.5K | 249.0K |
| Black PhilipDirector · 3 transactions | — | 265.4Kas of Sep 2015 | 265.4K | — | — |
| Fuller Dale LDirector · 5 transactions | — | 263.9Kas of Mar 2017 | 230.7K | 28.2K | — |
| Rau RaghavendraDirector · 8 transactions | — | 257.9Kas of Apr 2022 | 248.4K | 8.8K | — |
| Britts William CSVP, Worldwide Sales & Mktg. · 71 transactions | — | 206.6Kas of Feb 2018 | 2.25M | 40.0K | 585.7K |
| Buchsbaum Thomas SDirector · 20 transactions | — | 201.4Kas of Sep 2012 | 183.3K | 18.0K | — |
| Smith Jeffrey CDirector, 10% owner · 3 transactions | — | 192.7Kas of Oct 2014 | 192.7K | — | — |
| Marengi Joseph ADirector · 7 transactions | — | 191.4Kas of Sep 2012 | 191.4K | — | — |
| Fetter Elizabeth ADirector · 24 transactions | — | 188.4Kas of Sep 2012 | 259.0K | — | 75.0K |
| Ahmad FuadSVP, Chief Financial Officer · 12 transactions | — | 171.0Kas of Apr 2018 | 1.13M | — | 18.0K |
| Jacoby RebeccaDirector · 5 transactions | — | 158.6Kas of Sep 2022 | 142.0K | — | — |
| Wolf Dennis PDirector · 11 transactions | — | 138.8Kas of Sep 2011 | 282.8K | — | 144.0K |
| Lopatin GeraldExecutive VP, Engineering · 12 transactions | — | 129.6Kas of Jul 2010 | 150.0K | — | 78.5K |
| Barrett BarbaraSenior VP, Human Resources · 18 transactions | — | 129.4Kas of Jul 2010 | 238.5K | — | — |
| Dennis PatrickPresident and CEO · 1 transaction | — | 125.0Kas of Feb 2018 | 125.0K | — | — |
| Meyrath HuguesPresident & CEO, Director · 4 transactions | — | 124.7K | 173.5K | — | 3.0K |
| Hall Shawn DSenior VP, GC & Secretary · 62 transactions | — | 120.0Kas of Mar 2019 | 1.72M | — | 364.0K |
| Lerner James JPresident & CEO, Director · 33 transactions | — | 113.6Kas of Apr 2025 | 2.56M | 80.0K | 755.3K |
| Auvil Paul R. IIIDirector · 14 transactions | — | 101.7Kas of Sep 2017 | 511.5K | 120.0K | — |
| Stedman Geoff G.SVP, Mktg. & Storage Solutions · 13 transactions | — | 100.5Kas of Feb 2018 | 212.9K | 10.0K | — |
| Press CliffordDirector · 6 transactions | — | 98.1Kas of Sep 2019 | 298.3K | — | — |
| Andersen Robert JDirector · 2 transactions | — | 87.3Kas of Sep 2015 | 87.3K | — | — |
| Sanchez Adalio TDirector · 7 transactions | — | 84.1Kas of Mar 2019 | 115.3K | — | — |
| Martella Donald E. Jr.SVP, Engineering · 15 transactions | — | 81.4Kas of Aug 2020 | 271.5K | — | 1.9K |
| MacPherson Regan JChief Legal&Compliance Officer · 5 transactions | — | 81.1Kas of Mar 2021 | 89.4K | — | 9.0K |
| Clark Robert S.SVP, Product Operations · 21 transactions | — | 74.7Kas of Jul 2017 | 1.27M | — | 158.2K |
| Panayides, AndyVP Corp Development & Strategy · 1 transaction | — | 59.4Kas of Feb 2007 | — | — | — |
| Carrozza AnthonySenior VP, Worldwide Sales · 6 transactions | — | 53.5Kas of Aug 2006 | — | — | 10.0K |
| Mutch JohnDirector · 1 transaction | — | 50.0Kas of Apr 2017 | 50.0K | — | — |
| Ritti PhilipVP, General Manager, Media · 5 transactions | — | 49.6Kas of Aug 2006 | — | — | 8.9K |
| White Yue ZhouDirector · 3 transactions | — | 41.1K | 114.8K | — | — |
| Jaworksi DonDirector · 2 transactions | — | 39.7K | 85.5K | — | — |
| Pasternack Bruce ADirector · 4 transactions | — | 38.8Kas of Sep 2008 | 38.8K | — | — |
| Gianella Kenneth P.Chief Financial Officer · 6 transactions | — | 32.4Kas of Feb 2025 | 375.0K | — | 4.1K |
| Cabrera Brian ESVP Chief Admin Ofcr & Secy · 17 transactions | — | 29.8Kas of Apr 2025 | 274.4K | — | 81.1K |
| Tracy John R.Director · 3 transactions | — | 27.0K | 27.0K | — | — |
| Earhart Alan LDirector · 2 transactions | — | 26.8Kas of Aug 2007 | 17.2K | — | — |
| Moorehead Lewis W.Chief Accounting Officer · 27 transactions | — | 25.1Kas of Apr 2025 | 248.3K | 8.3K | 69.8K |
| White William HillisChief Financial Officer · 1 transaction | — | 25.0K | 25.0K | — | — |
| Dalton Stephen PSVP, TSS, Engineering · 4 transactions | — | 23.7Kas of Oct 2007 | 40.0K | — | 20.2K |
| Wold JimSr. VP & GM, Storage Devices · 2 transactions | — | 21.3Kas of Apr 2007 | — | — | — |
| Pinchev AlexDirector · 2 transactions | — | 20.3Kas of Sep 2017 | 20.3K | — | — |
| Craythorne AnthonyChief Revenue Officer · 1 transaction | — | 15.0K | 15.0K | — | — |
| Spanjaard Henk JanChief Revenue Officer · 3 transactions | — | 14.9Kas of Jan 2025 | 75.0K | — | 1.2K |
| Blevins Tony JDirector · 2 transactions | — | 13.0K | 13.0K | — | — |
| Clancy James CDirector · 2 transactions | — | 13.0K | 13.0K | — | — |
| Nash Laura A.Chief Accounting Officer · 11 transactions | — | 11.0K | 75.5K | — | 6.1K |
| Parker JesseSenior VP,Manufacturing & Ops · 2 transactions | — | 9.8Kas of Apr 2007 | — | — | — |
| BR Dialectic Capital Management, LLC +1 co-filer10% owner · 1 transaction | — | 0as of Dec 2019 | — | — | 969.9K |