Anna Protopapas

Companies

• Nuvalent, Inc.Board member Mar 31, 2022 to now¹
• Mersana Therapeutics (United States)Board member Jun 27, 2017 to now²
• Mersana Therapeutics (United States)Chief executive officer Jun 27, 2017 to Jan 18, 2023²
• Mersana Therapeutics (United States)President Jun 27, 2017 to Jan 18, 2023²
• Dicerna Pharmaceuticals (United States)Board member Jan 25, 2019 to Jun 7, 2021³
• ARIAD PharmaceuticalsBoard member Apr 29, 2015 to Feb 16, 2017⁴

Holdings

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

Shares held

• MTMersana Therapeutics (United States)0 shares⁵Jan 6, 2026
• NNuvalent, Inc.0 shares⁶Jul 15, 2026

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

Recent filings

• Jul 15, 2026Returned to company 3,444 shares of Nuvalent, Inc.⁶
• Jul 15, 2026U 5,146 shares at $124.00 of Nuvalent, Inc.⁶
• Jun 16, 2026Granted 3,444 shares of Nuvalent, Inc.⁷
• Jan 6, 2026U 9,609 shares of Mersana Therapeutics (United States)⁵
• Jan 6, 2026U 2,890 shares of Mersana Therapeutics (United States)⁵
• Jan 6, 2026U 6,721 shares of Mersana Therapeutics (United States)⁵
• Jun 18, 2025Granted 2,647 shares of Nuvalent, Inc.⁸
• Jan 16, 2025Sold 8,637 shares at $0.58 of Mersana Therapeutics (United States)⁹
• Jan 15, 2025Sold 6,191 shares at $0.63 of Mersana Therapeutics (United States)¹⁰
• Jan 15, 2025Exercised options 21,250 shares of Mersana Therapeutics (United States)⁹
• Jan 14, 2025Sold 11,534 shares at $0.66 of Mersana Therapeutics (United States)¹¹
• Jan 14, 2025Exercised options 16,750 shares of Mersana Therapeutics (United States)¹⁰
• Jan 13, 2025Exercised options 31,250 shares of Mersana Therapeutics (United States)¹¹
• Jun 12, 2024Granted 2,499 shares of Nuvalent, Inc.¹²
• Jan 16, 2024Sold 29,399 shares at $2.71 of Mersana Therapeutics (United States)¹³
• Jan 15, 2024Exercised options 17,708 shares of Mersana Therapeutics (United States)¹³
• Jan 15, 2024Exercised options 21,250 shares of Mersana Therapeutics (United States)¹³
• Jan 14, 2024Exercised options 16,750 shares of Mersana Therapeutics (United States)¹³
• Jan 13, 2024Exercised options 31,250 shares of Mersana Therapeutics (United States)¹³
• Dec 18, 2023Sold 5,000 shares at $75.67 of Nuvalent, Inc.¹⁴
• Dec 18, 2023Exercised options 5,000 shares at $9.36 of Nuvalent, Inc.¹⁴
• Sep 11, 2023Granted 16,643 shares of Mersana Therapeutics (United States)¹⁵
• Jan 17, 2023Sold 17,346 shares at $5.74 of Mersana Therapeutics (United States)¹⁶
• Jan 15, 2023Exercised options 17,708 shares of Mersana Therapeutics (United States)¹⁶
• Jan 15, 2023Exercised options 21,250 shares of Mersana Therapeutics (United States)¹⁶