Briggs Morrison

Companies

• CRISPR TherapeuticsBoard member Jun 6, 2025 to now¹
• Carisma Therapeutics Inc.Board member Mar 9, 2023 to now²
• Werewolf Therapeutics, Inc.Board member Apr 29, 2021 to now³
• Arvinas (United States)Board member Sep 26, 2018 to now⁴
• Repare Therapeutics Inc.Board member Jun 18, 2020 to Jun 20, 2024⁵
• Syndax Pharmaceuticals IncBoard member Mar 2, 2016 to Feb 9, 2024⁶
• Syndax Pharmaceuticals IncPresident Feb 3, 2022 to Mar 14, 2023⁷
• Syndax Pharmaceuticals IncChief executive officer Mar 2, 2016 to Dec 20, 2021⁶
• Codiak BioSciences, Inc.Board member Oct 13, 2020 to Feb 17, 2021⁸
• Oncorus, Inc.Board member Oct 1, 2020 to Oct 1, 2020⁹
• NextCure, Inc.Board member May 8, 2019 to Jun 15, 2020¹⁰

Holdings

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

Shares held

• AUArvinas (United States) ARVN111,548 shares¹¹$777.5K at $6.97Jun 24, 2026
• SPSyndax Pharmaceuticals Inc SNDX34,836 shares¹²$472.0K at $13.55Feb 7, 2024
• CRISPR Therapeutics CRSP5,209 shares¹³$256.5K at $49.25Jun 10, 2025
• CTCarisma Therapeutics Inc.12,175 shares¹⁴Mar 7, 2023

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

Recent filings

• Jun 24, 2026Granted 15,527 shares of Arvinas (United States)¹¹
• Mar 6, 2026Bought 20,000 shares at $13.40 of Arvinas (United States)¹⁵
• Sep 22, 2025Bought 30,000 shares at $7.57 of Arvinas (United States)¹⁶
• Jun 25, 2025Granted 16,025 shares of Arvinas (United States)¹⁷
• May 29, 2024Granted 5,899 shares of Arvinas (United States)¹⁸
• Feb 7, 2024Granted 17,000 shares of Syndax Pharmaceuticals Inc¹²
• Aug 9, 2023Sold 52,855 shares at $18.27 of Syndax Pharmaceuticals Inc¹⁹
• Aug 9, 2023Exercised options 52,855 shares at $8.77 of Syndax Pharmaceuticals Inc¹⁹
• Jul 10, 2023Sold 52,855 shares at $20.40 of Syndax Pharmaceuticals Inc²⁰
• Jul 10, 2023Exercised options 52,855 shares at $8.77 of Syndax Pharmaceuticals Inc²⁰
• Jun 15, 2023Granted 4,121 shares of Arvinas (United States)²¹
• Jun 9, 2023Sold 28,273 shares at $21.18 of Syndax Pharmaceuticals Inc²²
• Jun 9, 2023Sold 24,582 shares at $21.18 of Syndax Pharmaceuticals Inc²²
• Jun 9, 2023Exercised options 28,273 shares at $8.77 of Syndax Pharmaceuticals Inc²²
• Jun 9, 2023Exercised options 24,582 shares at $6.38 of Syndax Pharmaceuticals Inc²²
• May 9, 2023Sold 52,855 shares at $21.41 of Syndax Pharmaceuticals Inc²³
• May 9, 2023Exercised options 52,855 shares at $6.38 of Syndax Pharmaceuticals Inc²³
• Apr 10, 2023Sold 52,855 shares at $19.53 of Syndax Pharmaceuticals Inc²⁴
• Apr 10, 2023Exercised options 52,855 shares at $6.38 of Syndax Pharmaceuticals Inc²⁴
• Mar 13, 2023Sold 52,854 shares at $22.53 of Syndax Pharmaceuticals Inc²⁵
• Mar 13, 2023Exercised options 52,854 shares at $6.38 of Syndax Pharmaceuticals Inc²⁵
• Mar 7, 2023Granted 12,175 shares of Carisma Therapeutics Inc.¹⁴
• Feb 6, 2023Sold 52,854 shares at $26.83 of Syndax Pharmaceuticals Inc²⁶
• Feb 6, 2023Exercised options 52,854 shares at $6.38 of Syndax Pharmaceuticals Inc²⁶
• Sep 20, 2022Sold 59,649 shares at $23.25 of Syndax Pharmaceuticals Inc²⁷