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Who

Michael Thomas Heffernan

Director

Company insider

Files Form 4 as: Director, Trevi Therapeutics; Director, enGene Therapeutics; Director, Avalo Therapeutics; Director, Biohaven; Chairman, President and CEO, Collegium Pharmaceutical; Director, Synlogic; Director, Biohaven Pharmaceutical Holding Co; Director, Akebia Therapeutics.

In numbers

Trades disclosed
243
Buys
1
Sells
31
Bought
$25K
Sold
$26.9M
Companies
11
Companies where not an officer
10
First trade
31 Oct 2008
Last trade
15 Sep 2026
Last filed
17 Sep 2026

Companies traded

Where they are an officer
COLL Collegium PharmaceuticalDirector, Officer · Pharmaceuticals · last 10 Feb 20250 buys · 30 sells
Everywhere else they filed: board seats, 10% stakes, other companies
TRVI Trevi TherapeuticsDirector · Biotechnology · last 15 Sep 20261 buy · 1 sell
ENGN enGene TherapeuticsDirector · Biotechnology · last 16 Jun 20260 buys · 0 sells
AVTX Avalo TherapeuticsDirector · Biotechnology · last 2 Jun 20260 buys · 0 sells
BHVN BiohavenDirector · Biotechnology · last 28 Apr 20260 buys · 0 sells
SynlogicDirector · Biotechnology · last 22 Jun 20230 buys · 0 sells
Biohaven Pharmaceutical Holding CoDirector · last 3 Oct 20220 buys · 0 sells
AKBA Akebia TherapeuticsDirector · Pharmaceuticals · last 2 Jun 20210 buys · 0 sells
Keryx BiopharmaceuticalsDirector · last 12 Dec 20180 buys · 0 sells
Ocata TherapeuticsDirector · last 10 Feb 20160 buys · 0 sells
Cornerstone TherapeuticsDirector · last 3 Feb 20140 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Code M$56K18,421 at $3.04filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$276K18,321 at $15.09filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$1,588100 at $15.88filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—18,421 at $0.00filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—21,052 at $0.00filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Code M$70K21,052 at $3.33filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$316K20,952 at $15.09filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$1,588100 at $15.88filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—18,421 at $0.00filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code M—21,052 at $0.00filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Code M$56K18,421 at $3.04filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$276K18,321 at $15.09filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$1,588100 at $15.88filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Code M$70K21,052 at $3.33filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$316K20,952 at $15.09filing
15 Sep 2026filed 17 Sep 2026TRVI Trevi TherapeuticsBiotechnologySEC FORM 4 Sold$1,588100 at $15.88filing
16 Jun 2026filed 17 Jun 2026ENGN enGene Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—31,000 at $0.00filing
16 Jun 2026filed 17 Jun 2026ENGN enGene Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—31,000 at $0.00filing
3 Jun 2026filed 4 Jun 2026TRVI Trevi Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—35,000 at $0.00filing
3 Jun 2026filed 4 Jun 2026TRVI Trevi Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—35,000 at $0.00filing

News

Trevi Therapeutics Announces Oral Presentation Accepted at the CHEST 2026 Annual MeetingTRVI · manilatimes.net · 13 Oct 2026

0 headlines in the last 90 days name Michael Thomas Heffernan; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care32

Buys in green, sells in red, by the company’s sector.

Related people

Gino SantiniDirector · Director at Collegium Pharmaceutical, filing Form 4 there in the last year
John Gordon FreundDirector · Director at Collegium Pharmaceutical, filing Form 4 there in the last year
Garen G. BohlinDirector · Director at Collegium Pharmaceutical, filing Form 4 there in the last year
Nancy LurkerDirector · Director at Collegium Pharmaceutical, filing Form 4 there in the last year
Carlos Paya VDirector · Director at Collegium Pharmaceutical, filing Form 4 there in the last year
Donald J. TrumpPresident · Also traded COLL in the last 90 days