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Who

Garen G. Bohlin

Director

Company insider

Files Form 4 as: Director, Karyopharm Therapeutics; Director, Collegium Pharmaceutical; Director, Tetraphase Pharmaceuticals; Director, Protara Therapeutics; Director, Acusphere; Director, Targanta Therapeutics; COO and Assistant Secretary, Sirtris Pharmaceuticals; Director, Praecis Pharmaceuticals.

In numbers

Trades disclosed
66
Buys
2
Sells
2
Bought
$81K
Sold
$1.6M
Companies
8
Companies where not an officer
7
First trade
8 Jun 2006
Last trade
21 May 2026
Last filed
26 May 2026

Companies traded

Where they are an officer
Sirtris PharmaceuticalsOfficer · last 2 Jan 20080 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
KPTI Karyopharm TherapeuticsDirector · Biotechnology · last 21 May 20262 buys · 0 sells
COLL Collegium PharmaceuticalDirector · Pharmaceuticals · last 14 May 20260 buys · 2 sells
Tetraphase PharmaceuticalsDirector · last 10 Jun 20190 buys · 0 sells
TARA Protara TherapeuticsDirector · Biotechnology · last 8 Jun 20180 buys · 0 sells
AcusphereDirector · last 2 Jan 20090 buys · 0 sells
Targanta TherapeuticsDirector · last 2 Jun 20080 buys · 0 sells
Praecis PharmaceuticalsDirector · last 7 Feb 20070 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
21 May 2026filed 26 May 2026KPTI Karyopharm TherapeuticsBiotechnologySEC FORM 4 Code A—15,508 at $0.00filing
21 May 2026filed 26 May 2026KPTI Karyopharm TherapeuticsBiotechnologySEC FORM 4 Code A—15,508 at $0.00filing
14 May 2026filed 18 May 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—8,741 at $0.00filing
14 May 2026filed 18 May 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—8,741 at $0.00filing
11 May 2026filed 13 May 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code M$143K8,700 at $16.49filing
11 May 2026filed 13 May 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$323K8,700 at $37.18filing
11 May 2026filed 13 May 2026COLL Collegium Pharmaceuticaloption or derivative · PharmaceuticalsSEC FORM 4 Code M—8,700 at $0.00filing
11 May 2026filed 13 May 2026COLL Collegium Pharmaceuticaloption or derivative · PharmaceuticalsSEC FORM 4 Code M—8,700 at $0.00filing
11 May 2026filed 13 May 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code M$143K8,700 at $16.49filing
11 May 2026filed 13 May 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$323K8,700 at $37.18filing
28 May 2025filed 29 May 2025KPTI Karyopharm Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—4,600 at $0.00filing
15 May 2025filed 19 May 2025COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—9,791 at $0.00filing
29 May 2024filed 30 May 2024KPTI Karyopharm Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—69,000 at $0.00filing
16 May 2024filed 16 May 2024COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—7,693 at $0.00filing
14 May 2024filed 16 May 2024COLL Collegium Pharmaceuticaloption or derivative · PharmaceuticalsSEC FORM 4 Code M—28,985 at $0.00filing
14 May 2024filed 16 May 2024COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code M$166K28,985 at $5.73filing
14 May 2024filed 16 May 2024COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$936K28,985 at $32.30filing
12 Sep 2023filed 12 Sep 2023KPTI Karyopharm TherapeuticsBiotechnologySEC FORM 4 Bought$50K41,140 at $1.22filing
24 May 2023filed 25 May 2023KPTI Karyopharm Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—34,000 at $0.00filing
18 May 2023filed 19 May 2023COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—9,792 at $0.00filing

News

Collegium Pharmaceutical, Inc. (NASDAQ:COLL) Stock Has Consensus Price Target of $48.71COLL · dailypolitical.com · 13 Oct 2026

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

Sectors

Health Care4

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

Related people

Kristin AbateChief Accounting Officer · Also traded KPTI in the last 90 days
Donald J. TrumpPresident · Also traded COLL in the last 90 days
Stuart PoultonEVP, Chief Development Officer · Also traded KPTI in the last 90 days