Mark Zagorski

Companies

• OutbrainBoard member Apr 26, 2024 to now¹
• DoubleVerify Holdings, Inc.Board member Apr 20, 2021 to now²
• DoubleVerify Holdings, Inc.Chief executive officer Apr 20, 2021 to now²
• Magnite IncChief operating officer Apr 3, 2020 to Apr 3, 2020³
• Magnite IncPresident Apr 3, 2020 to Apr 3, 2020³

Holdings

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

Shares held

• DDoubleVerify Holdings, Inc. DV610,132 shares⁴$8.2M at $13.51Sep 15, 2026
• Outbrain TEAD72,500 shares⁵$29.7K at $0.41May 13, 2026

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

Recent filings

• Sep 15, 2026Shares withheld for tax 3,983 shares at $13.50 of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Exercised options 7,802 shares of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Shares withheld for tax 1,408 shares at $13.50 of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Exercised options 2,757 shares of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Shares withheld for tax 7,770 shares at $13.50 of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Exercised options 15,219 shares of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Shares withheld for tax 6,189 shares at $13.50 of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Exercised options 12,122 shares of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Shares withheld for tax 11,701 shares at $13.50 of DoubleVerify Holdings, Inc.⁴
• Sep 15, 2026Exercised options 22,919 shares of DoubleVerify Holdings, Inc.⁴
• Jun 30, 2026Shares withheld for tax 7,453 shares at $10.84 of DoubleVerify Holdings, Inc.⁶
• Jun 30, 2026Exercised options 13,476 shares of DoubleVerify Holdings, Inc.⁶
• Jun 15, 2026Shares withheld for tax 4,315 shares at $10.25 of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Exercised options 7,802 shares of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Shares withheld for tax 1,525 shares at $10.25 of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Exercised options 2,757 shares of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Shares withheld for tax 8,417 shares at $10.25 of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Exercised options 15,219 shares of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Shares withheld for tax 6,704 shares at $10.25 of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Exercised options 12,122 shares of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Shares withheld for tax 12,675 shares at $10.25 of DoubleVerify Holdings, Inc.⁷
• Jun 15, 2026Exercised options 22,919 shares of DoubleVerify Holdings, Inc.⁷
• May 31, 2026Other 416 shares at $8.25 of DoubleVerify Holdings, Inc.⁸
• May 13, 2026Granted 20,000 shares of Outbrain⁵
• Mar 31, 2026Shares withheld for tax 7,453 shares at $9.50 of DoubleVerify Holdings, Inc.⁹