Geoff McDonough

Companies

• Third Harmonic Bio, Inc.Board member Mar 28, 2024 to now¹
• Generation Bio Co.Board member Jun 11, 2020 to now²
• Generation Bio Co.Chief executive officer Jan 13, 2021 to Feb 4, 2026³
• Generation Bio Co.President Jan 13, 2021 to Feb 4, 2026³
• Surface Oncology, Inc.Board member Apr 18, 2018 to Jun 10, 2021⁴
• Generation Bio Co.Officer Jun 11, 2020 to Jun 18, 2020²

Holdings

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

Shares held

• GBGeneration Bio Co.0 shares⁵Feb 9, 2026

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

Recent filings

• Feb 9, 2026U 27,500 shares of Generation Bio Co.⁵
• Feb 9, 2026U 22,646 shares of Generation Bio Co.⁵
• Feb 9, 2026U 138,492 shares of Generation Bio Co.⁵
• Feb 2, 2026Shares withheld for tax 550 shares at $5.64 of Generation Bio Co.⁶
• Feb 2, 2026Exercised options 1,582 shares of Generation Bio Co.⁶
• Jan 15, 2026Shares withheld for tax 137 shares at $5.64 of Generation Bio Co.⁷
• Jan 15, 2026Exercised options 395 shares of Generation Bio Co.⁷
• Oct 31, 2025Shares withheld for tax 293 shares at $5.51 of Generation Bio Co.⁸
• Oct 31, 2025Exercised options 659 shares of Generation Bio Co.⁸
• Oct 15, 2025Shares withheld for tax 155 shares at $6.71 of Generation Bio Co.⁹
• Oct 15, 2025Exercised options 527 shares of Generation Bio Co.⁹
• Jul 15, 2025Shares withheld for tax 1,548 shares at $0.43 of Generation Bio Co.¹⁰
• Jul 15, 2025Exercised options 5,273 shares of Generation Bio Co.¹⁰
• Apr 15, 2025Shares withheld for tax 1,548 shares at $0.37 of Generation Bio Co.¹¹
• Apr 15, 2025Exercised options 5,274 shares of Generation Bio Co.¹¹
• Jan 15, 2025Shares withheld for tax 1,828 shares at $0.89 of Generation Bio Co.¹²
• Jan 15, 2025Exercised options 5,274 shares of Generation Bio Co.¹²
• Oct 15, 2024Shares withheld for tax 1,548 shares at $2.42 of Generation Bio Co.¹³
• Oct 15, 2024Exercised options 5,274 shares of Generation Bio Co.¹³
• Jul 15, 2024Shares withheld for tax 1,548 shares at $2.93 of Generation Bio Co.¹⁴
• Jul 15, 2024Exercised options 5,274 shares of Generation Bio Co.¹⁴
• Apr 15, 2024Shares withheld for tax 1,548 shares at $3.70 of Generation Bio Co.¹⁵
• Apr 15, 2024Exercised options 5,274 shares of Generation Bio Co.¹⁵
• Jan 15, 2024Shares withheld for tax 7,310 shares at $1.91 of Generation Bio Co.¹⁶
• Jan 15, 2024Exercised options 21,094 shares of Generation Bio Co.¹⁶