美格奈特 MGNI

Mr. Michael G. Barrett has been a member of our board of directors and has served as our Chief Executive Officer since March 2017. Mr. Barrett also served as our President from March 2017 until January 2025, except for the period from April 2020 to June 2020. He has served on the board of Outfront Media, Inc., a leading out-of-home media company, since August 2025. Mr. Barrett previously served as the President of Ichabod Farm Ventures LLC, an investment company that he founded. From January 2014 to December 2015, he served as President and Chief Executive Officer of Millennial Media, Inc. From July 2012 to December 2012, Mr. Barrett served as Global Chief Revenue Officer and Executive Vice President at Yahoo! Inc. Prior to Yahoo!, from January 2012 to July 2012, Mr. Barrett served as Director at Google Inc. (now Alphabet Inc.), where he led the integration efforts following Google's acquisition of AdMeld Inc., a global supply side platform solution for premium publishers. Mr. Barrett previously served as Chief Executive Officer at AdMeld from November 2008 to December 2011. Mr. Barrett also held senior positions at AOL, Fox Interactive Media and Disney Online. Mr. Barrett served on the board of directors of Media Math, a demand-side platform, from January 2013 to April 2020.

Ms. Katie Evans has served as our President, Product & Operations since April 2026. Prior to that, Ms. Evans served as our President, Operations from January 2025 through March 2026, our Chief Operating Officer from September 2020 through December 2024 and our General Manager, CTV from April 2020 through August 2020. Previously, she served as Chief Operating Officer of Telaria from March 2017 to April 2020 and as Senior Vice President, Strategy and Operations, from November 2015 to March 2017. Ms. Evans holds a B.S. in Business Administration from the University of Richmond.

Mr. Sean Patrick Buckley has served as our President, Revenue & Market Strategy since April 2026. Prior to that, Mr. Buckley served as our President, Revenue from January 2025 through March 2026, our Chief Revenue Officer from January 2022 through December 2024 and our Chief Revenue Officer, CTV, from May 2021 through December 2021. Previously, he served as the Chief Operating Officer for SpotX, Inc. from January 2020 to June 2021, Chief Revenue Officer from January 2017 to January 2020, SVP, Global Revenue from July 2014 to January 2017, and Vice President, Platform from June 2013 to July 2014. Mr. Buckley holds a B.S. in Business Administration from Northeastern University.

Mr. Paul Caine has been a member and Chairman of our board of directors since April 2020. He previously served as the non-executive Chairman of Telaria from January 1, 2020 until April 2020 and as a member of Telaria's board of directors from June 2014 until April 2020. He served as Telaria's executive Chairman from July 2017 to December 31, 2019 and Telaria's Interim Chief Executive Officer from February 2017 to July 2017 and as the non-executive Chairman of the Board from July 2016 to February 2017. Mr. Caine has served as President, On Location at TKO Group Holdings, Inc. (formerly part of Endeavor Group Holdings, Inc.), a sports and entertainment company, since January 2020. Mr. Caine served as President, IMG Events, an event management services company, from August 2022 to March 2025, the Chairman and Executive Director of the Board of Engine Group, a global marketing company, from January 2018 to February 2023, and as CEO and Founder of PC Ventures, LLC, an investment and advisory firm, since August 2017. Mr. Caine served as the Chief Global Revenue Officer for Bloomberg Media from June 2014 to July 2016. From April 2013 to January 2014, he served as Chief Executive Officer and a member of the board of directors of WestwoodOne, Inc., the largest independent national audio media company in the U.S. From 1989 to 2013, Mr. Caine served in various capacities at Time Inc., including Executive Vice President, Chief Revenue Officer and Group President Time Inc. from January 2011 until April 2013, Executive Vice President, President and Group Publisher, Style and Entertainment Group from January 2010 to January 2011, and President, Style and Entertainment Group from January 2008 to January 2010. Mr. Caine and his wife are Co-Founders of the Griffin Cares Foundation. Mr. Caine received a B.A. in Telecommunications with a minor in Business from Indiana University.

Mr. Doug Knopper has been a member of our board of directors since April 2020. He previously served as a member of Telaria's board of directors from October 2018 until April 2020. Mr. Knopper is the Co-Founder of FreeWheel Media, Inc. and served as its Co-Chief Executive Officer from February 2007 to September 2017. FreeWheel, which was acquired by Comcast in 2014, provides a technology platform for the management and monetization of digital television advertising. Prior to founding FreeWheel, Mr. Knopper served as the Chief Executive Officer of BitPass Inc. from 2005 to 2007 and as Senior Vice President/General Manager of DoubleClick Inc. from 2000 to 2005. Mr. Knopper received a B.A. from the University of Michigan and an M.B.A. from Georgetown University. Mr. Knopper brings to the board deep expertise and business relationships in digital video advertising and CTV, as well as experience founding, building and leading advertising technology companies.

Ms. Rachel Lam has been a member of our board of directors since April 2020. She previously served as a member of Telaria's board since May 2013. Ms. Lam is the Co-Founder and Managing Partner of Imagination Capital, an early-stage venture capital firm founded in 2017. From 2003 to 2017, Ms. Lam served as Group Managing Director of the Time Warner Investments Group, the strategic investing arm of Time Warner Inc. She managed Time Warner's investments in numerous digital media companies, and served on the board of directors of privately held Maker Studios and Bluefin Labs prior to their sales to the Walt Disney Company and Twitter, respectively. Ms. Lam has previously served on 20 boards of directors over the years and currently serves on the board of Porch Group, Inc., a Nasdaq listed company that is a leading software and insurance platform, since August 2021, where she is also the chair of the nominating and governance committee. From December 2021 until March 2024, Ms. Lam served on the board of Innovid, Inc., a formerly NYSE listed company prior to its strategic sale. In March 2025, Ms. Lam joined the board of Action Against Hunger USA, a leading non-profit organization fighting global hunger. Ms. Lam received a B.S. in industrial engineering and operations research from U.C. Berkeley and an M.B.A. from Harvard Business School.

Ms. Sarah P. Harden has been a member of our board of directors since July 2019. Ms. Harden brings more than two decades of experience in digital media, entertainment and direct-to-consumer video to the Company's board. From January 2018 until September 2025, Ms. Harden served as the Chief Executive Officer of Reese Witherspoon's media company Hello Sunshine, which was acquired by Blackstone in August 2021. She also served as the Chief Executive Officer of Candle Studios, a media company, from July 2024 until September 2025. Prior to Hello Sunshine, Ms. Harden held executive-level positions at Otter Media/The Chernin Group from 2013 to 2018, including President and Executive Vice President. Ms. Harden previously served as board member of privately held ESPN-Star Sports, Star China Media and The Moby Group and as a board director overseeing successful acquisitions and exits of private portfolio companies including Crunchyroll, Fullscreen, Roosterteeth, McBeard, and Stagebloc. Ms. Harden received her M.B.A. from Harvard Business School and graduated with honors with a B.A. in international relations from The University of Melbourne.

Ms. Diane Yu has been a member of our board of directors since March 2022. She is currently the co-founder and CEO of TidalWave Tech Inc., an agentic AI mortgage platform. She served as the Chief Technology Officer of Better Holdco, Inc., which operates Better.com, an online platform for mortgage origination and related services, from January 2021 to April 2022. Ms. Yu is the Co-Founder of FreeWheel Media, Inc., which provides a technology platform for the management and monetization of digital television advertising, and served as its Chief Technology Officer from 2007 to 2014, when FreeWheel was acquired by Comcast. Following the sale, Ms. Yu served as Chief Technology Officer of Comcast's Advanced Advertising Division. Prior to co-founding FreeWheel, Ms. Yu spent over nine years at DoubleClick, where she served as the Vice President of engineering from 2005 until 2007. She received her Bachelor's degree from Peking University in 1995 and a Master's degree in Mathematics from Ohio University in 1998.

Mr. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief Financial Officer of Leaf Group, a diversified consumer internet company that operates in digital media and direct-to-consumer ecommerce marketplaces, since May 2020, and as Chief Accounting Officer from June 2019 to May 2020. Prior to joining Leaf Group, Mr. Gephart served as Chief Accounting Officer of JH Capital Group, a diversified consumer finance company, from August 2017 to April 2019. Prior to joining JH Capital Group, Mr. Gephart was a Director at PricewaterhouseCoopers LLP specializing in Capital Markets & Accounting Advisory Services, from July 2011 to August 2017, where he advised a variety of private and public companies on capital market transactions, mergers and acquisitions and financial reporting and accounting matters. Mr. Gephart received a bachelor's degree in Accounting from Hillsdale College and an M.B.A. from DePaul University. Mr. Gephart is a Certified Public Accountant.On September 18, 2026, the Company appointed Brian Gephart as the Company's Chief Financial Officer, effective October 1, 2026, in which capacity he will serve as principal financial officer. On September 18, 2026, Magnite, Inc. appointed Brian Gephart as the Company's Chief Financial Officer, effective October 1, 2026, in which capacity he will serve as principal financial officer.

On September 18, 2026, the Company appointed Haas Sullivan as the Company's Chief Accounting Officer effective October 1, 2026, in which capacity he will serve as principal accounting officer. Mr. Sullivan has served as the Company's Vice President of Accounting since April 2020. Previously, he served as the Company's Senior Director of Accounting from July 2018 to April 2020 and as its Director of Accounting from August 2015 to July 2018. Prior to joining the Company, Mr. Sullivan served as Senior Director of Global Accounting at HYLA Mobile, a provider of mobile device trade-in and lifecycle management solutions, from 2010 to 2015. Prior to joining HYLA Mobile, Mr. Sullivan spent five years in the audit practice at Deloitte & Touche LLP. Mr. Sullivan received a bachelor's degree in Business Economics, with an emphasis in Accounting, from the University of California, Santa Barbara.

Mr. Aaron Saltz has served as our Chief Legal Officer since January 2023, and previously served as our General Counsel and Corporate Secretary from April 1, 2020 to December 2022. Previously, Mr. Saltz served as General Counsel of Telaria from November 2015 to April 2020 and as Vice President, Associate General Counsel from January 2013 to October 2015. Prior to Telaria, Mr. Saltz worked as an attorney in the mergers and acquisitions department of Skadden, Arps, Slate, Meagher and Flom LLP from 2005 to 2013. Mr. Saltz holds a B.A. from Cornell University and a J.D. from Harvard Law School.

Mr. David Buonasera has served as Chief Technology Officer since March 2023. Prior to that Mr. Buonasera served as our Senior Vice President of Engineering for SpringServe since July 2021 and as head of Magnite CTV Streaming since September 2022. Previously, he helped found SpringServe in 2014 and served as its Chief Technology Officer from July 2014 to July 2021. His career also includes experience as Director of Optimization and Analytics, and Manager of Data Engineering at Appnexus from July 2009 to July 2014. Mr. Buonasera holds a Computer Science and Engineering degree from the University of Pennsylvania.