Heffernan Michael Thomas

Director at enGene Therapeutics Inc. · on record since Jul 10, 2025
Director at CORNERSTONE THERAPEUTICS INC · on record since Dec 18, 2008
Director at ATS CORP · on record since Apr 18, 2012
Director at Biohaven Pharmaceutical Holding Co Ltd. · on record since Apr 30, 2026
Director at Avalo Therapeutics, Inc. · on record since Jun 4, 2026
Director at Trevi Therapeutics, Inc. · on record since Jun 4, 2026
Director at Ocata Therapeutics, Inc. · on record since Jan 5, 2015
Director at COLLEGIUM PHARMACEUTICAL, INC · on record since May 18, 2015
Chairman, President and CEO at COLLEGIUM PHARMACEUTICAL, INC · on record since Jan 22, 2016
Director at KERYX BIOPHARMACEUTICALS INC · on record since Jun 23, 2016
Director at Akebia Therapeutics, Inc. · on record since Dec 13, 2018
Director at SYNLOGIC, INC. · on record since Dec 9, 2020

Insider trading activity of Heffernan Michael Thomas

Transactions on record: 229; since Nov 4, 2008

Open-market buys: 1; $25K

Open-market sells: 47; $26.3M

Companies traded: 12; last filing Sep 17, 2026

Figures computed from official regulatory filings — .

Companies where Heffernan Michael Thomas has traded

Trevi Therapeutics, Inc.19 tx · $746.9K · Sep 17, 2026
enGene Therapeutics Inc.2 tx · Jun 17, 2026
Avalo Therapeutics, Inc.3 tx · Jun 4, 2026
Biohaven Ltd.17 tx · $186.8K · Apr 30, 2026
110 tx · $32.9M · Feb 12, 2025
4 tx · Jun 26, 2023
10 tx · Oct 3, 2022
11 tx · Jun 3, 2021
7 tx · Dec 13, 2018
15 tx · $263.5K · Feb 11, 2016
17 tx · Oct 1, 2014
14 tx · $286.4K · Feb 4, 2014

Track record of Heffernan Michael Thomas

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Heffernan Michael Thomas

Co-insiders of Heffernan Michael Thomas

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Exercise	21,052	3.33 USD	$70.1K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-18,421	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-100	15.88 USD	$1.6K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Exercise	18,421	3.04 USD	$56K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-18,321	15.09 USD	$276.5K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-20,952	15.09 USD	$316.2K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-21,052	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-100	15.88 USD	$1.6K	SEC
enGene Therapeutics Inc.Listing on record	Jun 17, 2026	AwardD (derivative)	31,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Avalo Therapeutics, Inc.Listing on record	Jun 4, 2026	AwardD (derivative)	29,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 4, 2026	AwardD (derivative)	35,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	Apr 30, 2026	AwardD (derivative)	68,693	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
enGene Therapeutics Inc.Listing on record	Jul 10, 2025	AwardD (derivative)	45,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Avalo Therapeutics, Inc.Listing on record	Jun 18, 2025	AwardD (derivative)	29,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 13, 2025	AwardD (derivative)	45,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	May 7, 2025	AwardD (derivative)	31,716	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Avalo Therapeutics, Inc.Listing on record	Mar 26, 2025	AwardD (derivative)	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COLLEGIUM PHARMACEUTICAL, INCListing on record	Feb 12, 2025	Award	4,820	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 14, 2024	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COLLEGIUM PHARMACEUTICAL, INCListing on record	May 16, 2024	Award	7,693	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	May 2, 2024	AwardD (derivative)	16,592	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 30, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SYNLOGIC, INC.Listing on record	Jun 26, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COLLEGIUM PHARMACEUTICAL, INCListing on record	May 19, 2023	Award	9,792	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	May 4, 2023	AwardD (derivative)	52,906	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Exercise	21,052	3.33 USD	$70.1K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-18,421	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-100	15.88 USD	$1.6K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Exercise	18,421	3.04 USD	$56K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-18,321	15.09 USD	$276.5K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-20,952	15.09 USD	$316.2K	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	ExerciseD (derivative)	-21,052	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Sep 17, 2026	Sell	-100	15.88 USD	$1.6K	SEC
enGene Therapeutics Inc.Listing on record	Jun 17, 2026	AwardD (derivative)	31,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Avalo Therapeutics, Inc.Listing on record	Jun 4, 2026	AwardD (derivative)	29,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 4, 2026	AwardD (derivative)	35,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	Apr 30, 2026	AwardD (derivative)	68,693	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
enGene Therapeutics Inc.Listing on record	Jul 10, 2025	AwardD (derivative)	45,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Avalo Therapeutics, Inc.Listing on record	Jun 18, 2025	AwardD (derivative)	29,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 13, 2025	AwardD (derivative)	45,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	May 7, 2025	AwardD (derivative)	31,716	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Avalo Therapeutics, Inc.Listing on record	Mar 26, 2025	AwardD (derivative)	50,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COLLEGIUM PHARMACEUTICAL, INCListing on record	Feb 12, 2025	Award	4,820	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 14, 2024	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COLLEGIUM PHARMACEUTICAL, INCListing on record	May 16, 2024	Award	7,693	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	May 2, 2024	AwardD (derivative)	16,592	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Trevi Therapeutics, Inc.Listing on record	Jun 30, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
SYNLOGIC, INC.Listing on record	Jun 26, 2023	AwardD (derivative)	30,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
COLLEGIUM PHARMACEUTICAL, INCListing on record	May 19, 2023	Award	9,792	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC
Biohaven Ltd.Listing unverified	May 4, 2023	AwardD (derivative)	52,906	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))	SEC