Michael Thomas Heffernan

Companies

• enGene Therapeutics Inc.Board member Jul 8, 2025 to now¹
• Avalo Therapeutics, Inc.Board member Mar 26, 2025 to now²
• Biohaven PharmaceuticalsBoard member Sep 30, 2022 to now³
• Trevi Therapeutics, Inc.Board member May 7, 2019 to now⁴
• COLLEGIUM PHARMACEUTICAL, INCBoard member Aug 6, 2018 to now⁵
• SYNLOGIC, INC.Board member Dec 9, 2020 to Jun 26, 2023⁶
• Biohaven Pharmaceutical Holding Co Ltd.Board member Jan 31, 2020 to Oct 3, 2022⁷
• Akebia Therapeutics, Inc.Board member Dec 13, 2018 to Jun 3, 2021⁸
• COLLEGIUM PHARMACEUTICAL, INCPresident May 18, 2015 to Jun 13, 2018⁹
• COLLEGIUM PHARMACEUTICAL, INCChief executive officer May 6, 2015 to Jun 13, 2018¹⁰
• COLLEGIUM PHARMACEUTICAL, INCChair May 6, 2015 to Jun 13, 2018¹⁰

Holdings

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

Shares held

• CPCOLLEGIUM PHARMACEUTICAL, INC COLL50,328 shares¹¹$1.2M at $23.45Feb 10, 2025
• Biohaven Pharmaceuticals BHVN15,178 shares¹²$170.6K at $11.24Oct 3, 2022
• TTTrevi Therapeutics, Inc. TRVI6,351 shares¹³$75.7K at $11.93Sep 15, 2026

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

Recent filings

• Sep 15, 2026Sold 100 shares at $15.88 of Trevi Therapeutics, Inc.¹³
• Sep 15, 2026Sold 20,952 shares at $15.09 of Trevi Therapeutics, Inc.¹³
• Sep 15, 2026Exercised options 21,052 shares at $3.33 of Trevi Therapeutics, Inc.¹³
• Sep 15, 2026Sold 100 shares at $15.88 of Trevi Therapeutics, Inc.¹³
• Sep 15, 2026Sold 18,321 shares at $15.09 of Trevi Therapeutics, Inc.¹³
• Sep 15, 2026Exercised options 18,421 shares at $3.04 of Trevi Therapeutics, Inc.¹³
• Feb 10, 2025Granted 4,820 shares of COLLEGIUM PHARMACEUTICAL, INC¹¹
• May 16, 2024Granted 7,693 shares of COLLEGIUM PHARMACEUTICAL, INC¹⁴
• May 18, 2023Granted 9,792 shares of COLLEGIUM PHARMACEUTICAL, INC¹⁵
• Dec 27, 2022Sold 3,820 shares at $24.16 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 27, 2022Exercised options 3,820 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 27, 2022Sold 15,995 shares at $23.63 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 27, 2022Exercised options 15,995 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 23, 2022Sold 4,989 shares at $23.00 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 23, 2022Exercised options 4,989 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 22, 2022Sold 237 shares at $23.00 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 22, 2022Exercised options 237 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁶
• Dec 21, 2022Sold 46,600 shares at $23.11 of COLLEGIUM PHARMACEUTICAL, INC¹⁷
• Dec 21, 2022Exercised options 46,600 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁷
• Dec 20, 2022Sold 33,758 shares at $23.08 of COLLEGIUM PHARMACEUTICAL, INC¹⁷
• Dec 20, 2022Exercised options 33,758 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁷
• Dec 19, 2022Sold 3,606 shares at $23.04 of COLLEGIUM PHARMACEUTICAL, INC¹⁷
• Dec 19, 2022Exercised options 3,606 shares at $16.15 of COLLEGIUM PHARMACEUTICAL, INC¹⁷
• Dec 13, 2022Sold 161,687 shares at $22.16 of COLLEGIUM PHARMACEUTICAL, INC¹⁸
• Dec 13, 2022Exercised options 7,904 shares at $14.57 of COLLEGIUM PHARMACEUTICAL, INC¹⁸