Timothy B. Lowinger

Companies

• Mersana Therapeutics (United States)Chief Scientific Officer Jun 27, 2017 to now¹

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 shares²Jan 6, 2026

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

Recent filings

• Jan 6, 2026U 10,466 shares of Mersana Therapeutics (United States)²
• Jan 16, 2025Sold 8,048 shares at $0.58 of Mersana Therapeutics (United States)³
• Jan 15, 2025Exercised options 12,500 shares of Mersana Therapeutics (United States)³
• Jan 15, 2025Sold 1,794 shares at $0.63 of Mersana Therapeutics (United States)⁴
• Jan 15, 2025Exercised options 7,291 shares of Mersana Therapeutics (United States)³
• Jan 14, 2025Sold 3,483 shares at $0.66 of Mersana Therapeutics (United States)⁵
• Jan 14, 2025Exercised options 4,792 shares of Mersana Therapeutics (United States)⁴
• Jan 13, 2025Exercised options 9,375 shares of Mersana Therapeutics (United States)⁵
• Oct 3, 2024Sold 5,598 shares at $1.96 of Mersana Therapeutics (United States)⁶
• Oct 2, 2024Sold 8,089 shares at $2.00 of Mersana Therapeutics (United States)⁶
• Oct 1, 2024Exercised options 50,000 shares of Mersana Therapeutics (United States)⁶
• Jan 16, 2024Sold 10,409 shares at $2.71 of Mersana Therapeutics (United States)⁷
• Jan 15, 2024Exercised options 7,916 shares of Mersana Therapeutics (United States)⁷
• Jan 15, 2024Exercised options 7,292 shares of Mersana Therapeutics (United States)⁷
• Jan 14, 2024Exercised options 4,792 shares of Mersana Therapeutics (United States)⁷
• Jan 13, 2024Exercised options 9,375 shares of Mersana Therapeutics (United States)⁷
• Jan 17, 2023Sold 6,233 shares at $5.74 of Mersana Therapeutics (United States)⁸
• Jan 15, 2023Exercised options 7,917 shares of Mersana Therapeutics (United States)⁸
• Jan 15, 2023Exercised options 7,292 shares of Mersana Therapeutics (United States)⁸
• Jan 14, 2023Exercised options 4,792 shares of Mersana Therapeutics (United States)⁸
• Dec 14, 2022Exercised options 24,250 shares at $1.53 of Mersana Therapeutics (United States)⁹
• Dec 14, 2022Exercised options 11,111 shares at $1.40 of Mersana Therapeutics (United States)⁹
• Jan 18, 2022Sold 4,741 shares at $5.92 of Mersana Therapeutics (United States)¹⁰
• Jan 14, 2022Exercised options 15,209 shares of Mersana Therapeutics (United States)¹⁰
• Dec 20, 2021Exercised options 45,593 shares at $1.40 of Mersana Therapeutics (United States)¹¹