Michael G. Barrett

Companies

• Outfront MediaBoard member Sep 16, 2025 to now¹
• Magnite IncBoard member Apr 26, 2017 to now²
• Magnite IncChief executive officer Mar 21, 2017 to now³
• Magnite IncPresident Mar 21, 2017 to Jan 21, 2020³
• AltabaEVP and Chief Revenue Officer Jul 9, 2012 to Jul 30, 2012⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Magnite Inc MGNI392,670 shares⁵$9.2M at $23.36Aug 15, 2026
• Outfront Media OUT6,312 shares⁶$192.1K at $30.43Sep 18, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Sep 18, 2026Granted 265 shares of Outfront Media⁶
• Sep 18, 2026Exercised options 6,047 shares of Outfront Media⁶
• Aug 15, 2026Shares withheld for tax 10,404 shares at $24.73 of Magnite Inc⁵
• Aug 6, 2026Sold 293,968 shares at $22.72 of Magnite Inc⁷
• Aug 6, 2026Exercised options 293,968 shares at $5.80 of Magnite Inc⁷
• Jul 15, 2026Sold 38,596 shares at $20.35 of Magnite Inc⁸
• Jul 15, 2026Exercised options 38,596 shares at $5.80 of Magnite Inc⁸
• Jun 29, 2026Sold 75,000 shares at $19.50 of Magnite Inc⁹
• Jun 29, 2026Exercised options 75,000 shares at $5.80 of Magnite Inc⁹
• Jun 16, 2026Sold 100,000 shares at $17.50 of Magnite Inc¹⁰
• Jun 16, 2026Exercised options 100,000 shares at $5.80 of Magnite Inc¹⁰
• Jun 15, 2026Sold 178,596 shares at $16.59 of Magnite Inc¹⁰
• Jun 15, 2026Exercised options 178,596 shares at $5.80 of Magnite Inc¹⁰
• May 15, 2026Shares withheld for tax 10,404 shares at $12.82 of Magnite Inc¹¹
• Feb 15, 2026Shares withheld for tax 23,549 shares at $11.70 of Magnite Inc¹²
• Jan 9, 2026Shares withheld for tax 109,742 shares at $16.17 of Magnite Inc¹³
• Jan 9, 2026Exercised options 213,750 shares of Magnite Inc¹³
• Jan 1, 2026Granted 94,044 shares of Magnite Inc¹⁴
• Nov 15, 2025Shares withheld for tax 12,198 shares at $14.15 of Magnite Inc¹⁵
• Aug 18, 2025Sold 35,951 shares at $23.85 of Magnite Inc¹⁶
• Jul 15, 2025Sold 70,900 shares at $23.27 of Magnite Inc¹⁷
• Jun 24, 2025Sold 300,000 shares at $20.01 of Magnite Inc¹⁸
• Jun 18, 2025Sold 30,000 shares at $19.00 of Magnite Inc¹⁹
• Jun 16, 2025Sold 45,000 shares at $17.76 of Magnite Inc¹⁹
• May 15, 2025Shares withheld for tax 13,086 shares at $15.88 of Magnite Inc²⁰