All trades / MGNI
MGNI
MAGNITE, INC.
506Open-market trades
−12.5%Avg 90d after buys
−4.39%Avg 90d after sales
−17.5%Avg 180d after buys
Price and insider prints
MGNI adjusted close▲ buy▼ sale
Trades
| Date | Form 4 | Ticker | Insider | Title | Side | Shares | Value | 90d | 180d |
|---|---|---|---|---|---|---|---|---|---|
| 9/17/2026 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 7,500 | $198.8K | +14.2%hist | +35.5%hist |
| 9/17/2026 | Form 4 | MGNI 10b5-1 | Knopper Douglas S | Director | SELL | 37,337 | $981.2K | +1.14%hist | +41.6%hist |
| 9/14/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 1,165 | $28.0K | −7.72%hist | +4.88%hist |
| 9/14/2026 | Form 4 | MGNI | Spillane Robert F | Director | SELL | 10,363 | $246.2K | −21.6%hist | −4.45%hist |
| 9/11/2026 | Form 4 | MGNI 10b5-1 | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | Officer | SELL | 13,997 | $335.9K | +19.1%hist | +33.5%hist |
| 9/10/2026 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 5,000 | $117.7K | +14.2%hist | +35.5%hist |
| 9/10/2026 | Form 4 | MGNI 10b5-1 | Saltz AaronAaron 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. Election of Officers Our executive officers are elected by, and serve at the discretion of, our board of directors. There… | CHIEF LEGAL OFFICER | SELL | 40,000 | $936.4K | +12.4%hist | +31.5%hist |
| 9/9/2026 | Form 4 | MGNI 10b5-1 | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | Officer | SELL | 11,100 | $260.4K | +19.1%hist | +33.5%hist |
| 9/8/2026 | Form 4 | MGNI 10b5-1 | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | Officer | SELL | 32,285 | $762.9K | +19.1%hist | +33.5%hist |
| 9/2/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 1,043 | $26.1K | −7.72%hist | +4.88%hist |
| 9/1/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 5,371 | $125.8K | −7.72%hist | +4.88%hist |
| 8/28/2026 | Form 4 | MGNI 10b5-1 | Harden Sarah Patricia | Director | SELL | 18,436 | $442.5K | — | — |
| 8/26/2026 | Form 4 | MGNI 10b5-1 | Harden Sarah Patricia | Director | SELL | 30,550 | $712.1K | — | — |
| 8/18/2026 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | Officer | SELL | 2,759 | $69.0K | +6.04%hist | +2.14%hist |
| 8/17/2026 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | Officer | SELL | 8,271 | $201.1K | +6.04%hist | +2.14%hist |
| 8/14/2026 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 7,500 | $187.5K | +14.2%hist | +35.5%hist |
| 8/10/2026 | Form 4 | MGNI | Gephart BrianBrian 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… | CHIEF ACCOUNTING OFFICER | SELL | 12,479 | $308.0K | +3.23%hist | +5.61%hist |
| 8/10/2026 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 5,000 | $121.8K | +14.2%hist | +35.5%hist |
| 8/10/2026 | Form 4 | MGNI | Lam Rachel | Director | SELL | 10,000 | $241.6K | +37.8%hist | +26.4%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | Officer | SELL | 20,000 | $480.0K | +19.1%hist | +33.5%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 4,176 | $95.3K | −7.72%hist | +4.88%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 2,602 | $62.4K | −7.72%hist | +4.88%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 871 | $21.8K | −7.72%hist | +4.88%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Knopper Douglas S | Director | SELL | 37,337 | $848.3K | +1.14%hist | +41.6%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | BARRETT MICHAEL G. | CEO | SELL | 293,968 | $6.68M | −9.04%hist | −9.20%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | Officer | SELL | 47,942 | $1.20M | +6.04%hist | +2.14%hist |
| 8/6/2026 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | Officer | SELL | 19,237 | $442.5K | +6.04%hist | +2.14%hist |
| 7/15/2026 | Form 4 | MGNI 10b5-1 | BARRETT MICHAEL G. | CEO | SELL | 38,596 | $785.4K | −9.04%hist | −9.20%hist |
| 7/10/2026 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 5,000 | $103.2K | +14.2%hist | +35.5%hist |
| 7/7/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 1,224 | $25.7K | −7.72%hist | +4.88%hist |
| 7/7/2026 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | Officer | SELL | 19,233 | $404.5K | +6.04%hist | +2.14%hist |
| 7/1/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 9,376 | $187.5K | −7.72%hist | +4.88%hist |
| 6/29/2026 | Form 4 | MGNI 10b5-1 | BARRETT MICHAEL G. | CEO | SELL | 75,000 | $1.46M | −9.04%hist | −9.20%hist |
| 6/17/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 1,409 | $26.8K | −30.0% | +4.88%hist |
| 6/17/2026 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | Officer | SELL | 19,233 | $365.4K | −30.0% | +2.14%hist |
| 6/16/2026 | Form 4 | MGNI 10b5-1 | BARRETT MICHAEL G. | CEO | SELL | 100,000 | $1.75M | −28.5% | −9.20%hist |
| 6/16/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 11,233 | $202.2K | −28.5% | +4.88%hist |
| 6/16/2026 | Form 4 | MGNI 10b5-1 | Knopper Douglas S | Director | SELL | 37,337 | $675.8K | −28.5% | +41.6%hist |
| 6/15/2026 | Form 4 | MGNI 10b5-1 | BARRETT MICHAEL G. | CEO | SELL | 178,596 | $2.96M | −42.3% | −9.20%hist |
| 6/15/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 1,057 | $18.0K | −42.3% | +4.88%hist |
| 6/10/2026 | Form 4 | MGNI 10b5-1 | PEARSON DAVID T. | Director | SELL | 10,766 | $168.5K | −51.2% | +5.03%hist |
| 6/10/2026 | Form 4 | MGNI 10b5-1 | Knopper Douglas S | Director | SELL | 10,766 | $169.3K | −51.2% | +41.6%hist |
| 6/1/2026 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 1,409 | $21.1K | −52.7% | +4.88%hist |
| 5/19/2026 | Form 4 | MGNI | Spillane Robert F | Director | SELL | 10,000 | $133.3K | −80.7% | −4.45%hist |
| 2/18/2026 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 21,529 | $258.3K | −11.6% | −101.6% |
| 12/17/2025 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 16,656 | $283.2K | +26.1% | −0.30% |
| 11/24/2025 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | President, Revenue | SELL | 2,213 | $32.1K | +23.2% | +9.84% |
| 11/21/2025 | Form 4 | MGNI | Spillane Robert F | Director | SELL | 12,500 | $177.8K | +13.3% | +7.24% |
| 11/18/2025 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 10,857 | $143.6K | +13.7% | +0.07% |
| 11/18/2025 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | President, Revenue | SELL | 4,426 | $59.1K | +13.7% | +0.07% |
| 10/24/2025 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 5,000 | $100.0K | +24.4% | +32.8% |
| 9/19/2025 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 7,500 | $187.5K | +36.0% | +50.9% |
| 9/19/2025 | Form 4 | MGNI 10b5-1 | Saltz AaronAaron 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. Election of Officers Our executive officers are elected by, and serve at the discretion of, our board of directors. There… | CHIEF LEGAL OFFICER | SELL | 8,522 | $208.8K | +36.0% | +50.9% |
| 9/15/2025 | Form 4 | MGNI 10b5-1 | Saltz AaronAaron 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. Election of Officers Our executive officers are elected by, and serve at the discretion of, our board of directors. There… | CHIEF LEGAL OFFICER | SELL | 6,180 | $147.9K | +33.2% | +48.7% |
| 9/10/2025 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 1,189 | $28.4K | +35.1% | +43.4% |
| 9/10/2025 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 3,811 | $89.6K | +35.1% | +43.4% |
| 9/9/2025 | Form 4 | MGNI | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | President, Revenue | SELL | 20,000 | $492.2K | +38.9% | +44.5% |
| 9/8/2025 | Form 4 | MGNI | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | President, Revenue | SELL | 20,000 | $511.2K | +41.2% | +46.6% |
| 9/4/2025 | Form 4 | MGNI 10b5-1 | Gephart BrianBrian 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… | CHIEF ACCOUNTING OFFICER | SELL | 27,671 | $683.8K | +42.1% | +44.6% |
| 9/3/2025 | Form 4 | MGNI 10b5-1 | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 2,950 | $74.8K | +41.3% | +44.7% |
| 9/2/2025 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 15,717 | $392.5K | +42.2% | +47.0% |
| 9/2/2025 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 9,269 | $224.5K | +42.2% | +47.0% |
| 8/29/2025 | Form 4 | MGNI | Saltz AaronAaron 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. Election of Officers Our executive officers are elected by, and serve at the discretion of, our board of directors. There… | CHIEF LEGAL OFFICER | SELL | 12,403 | $323.3K | +43.4% | +53.9% |
| 8/27/2025 | Form 4 | MGNI | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | President, Operations | SELL | 21,509 | $548.9K | +42.0% | +55.7% |
| 8/26/2025 | Form 4 | MGNI | Yu Diane | Director | SELL | 20,000 | $504.6K | +41.4% | +55.0% |
| 8/25/2025 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 7,500 | $187.5K | +41.8% | +55.3% |
| 8/25/2025 | Form 4 | MGNI 10b5-1 | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | President, Operations | SELL | 8,345 | $217.0K | +41.8% | +55.3% |
| 8/19/2025 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 10,579 | $248.3K | +38.8% | +47.0% |
| 8/19/2025 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | President, Revenue | SELL | 9,315 | $218.2K | +38.8% | +47.0% |
| 8/18/2025 | Form 4 | MGNI | Buonasera DavidDavid 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. David L. Day has served as our Chief Financial Officer since May 2016 and served as our Chief… | CHIEF TECHNOLOGY OFFICER | SELL | 7,834 | $186.8K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI 10b5-1 | Soroca Adam LeeAdam Soroca has served as our Chief Product Officer since July 2021, where he is responsible for the Company’s strategic product direction, product roadmap and go-to-market initiatives. Previously, Mr. Soroca was the Head of Global Buyer Team since our acquisition of nToggle, Inc. in July 2017. Mr. Soroca co-founded nToggle in September 2014 and served as its Chief Executive Officer and a member of the board of directors until nToggle’s sale to the Company. Prior to founding nToggle, Mr. Soroca was the chief product officer at Millennial Media (via acquisition of Jumptap) from November 2013 to July 2014, where he oversaw the global product and operations teams. Prior to Millennial Media, from June 2005 to… | CHIEF PRODUCT OFFICER | SELL | 9,700 | $231.3K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI | Day David | CHIEF FINANCIAL OFFICER | SELL | 13,366 | $318.8K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI | Gephart BrianBrian 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… | CHIEF ACCOUNTING OFFICER | SELL | 2,961 | $70.6K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI | Evans Katie SeitzKatie 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. Brian Gephart has served as our Chief Accounting Officer since June 2021. Prior to joining the Company, Mr. Gephart served as the Chief… | President, Operations | SELL | 10,487 | $250.1K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI | Saltz AaronAaron 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. Election of Officers Our executive officers are elected by, and serve at the discretion of, our board of directors. There… | CHIEF LEGAL OFFICER | SELL | 5,770 | $137.6K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI 10b5-1 | Buckley Sean PatrickSean 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. David Buonasera has served as Chief… | President, Revenue | SELL | 10,886 | $259.6K | +45.1% | +52.4% |
| 8/18/2025 | Form 4 | MGNI | BARRETT MICHAEL G. | CEO | SELL | 35,951 | $857.4K | +45.1% | +52.4% |
| 8/14/2025 | Form 4 | MGNI | Saltz AaronAaron 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. Election of Officers Our executive officers are elected by, and serve at the discretion of, our board of directors. There… | CHIEF LEGAL OFFICER | SELL | 13,860 | $323.5K | +39.8% | +49.3% |
| 8/12/2025 | Form 4 | MGNI | Lam Rachel | Director | SELL | 15,000 | $333.8K | +34.6% | +47.6% |
| 8/11/2025 | Form 4 | MGNI 10b5-1 | Caine PaulMr. 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… | Director | SELL | 5,000 | $111.5K | +34.1% | +47.2% |
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