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Who

David Dieter

EVP & General Counsel

Company insider

Files Form 4 as: EVP & General Counsel, Collegium Pharmaceutical.

In numbers

Trades disclosed
13
Buys
0
Sells
2
Bought
$0
Sold
$1.4M
Companies
1
Companies where not an officer
0
First trade
17 Mar 2025
Last trade
18 Mar 2026
Last filed
3 Apr 2026

Companies traded

Where they are an officer
COLL Collegium PharmaceuticalOfficer · Pharmaceuticals · last 18 Mar 20260 buys · 2 sells

Activity over time

1 Mar – 1 Oct
20Mar 26May 26Jul 26Aug 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
18 Mar 2026filed 20 Mar 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$488K13,976 at $34.92filing
18 Mar 2026filed 20 Mar 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$488K13,976 at $34.92filing
17 Mar 2026filed 3 Apr 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code F$316K8,840 at $35.72filing
17 Mar 2026filed 3 Apr 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code F$316K8,840 at $35.72filing
9 Mar 2026filed 11 Mar 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$228K6,224 at $36.65filing
9 Mar 2026filed 11 Mar 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Sold$228K6,224 at $36.65filing
10 Feb 2026filed 12 Feb 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—22,194 at $0.00filing
10 Feb 2026filed 12 Feb 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—9,005 at $0.00filing
10 Feb 2026filed 12 Feb 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code F$130K2,781 at $46.75filing
10 Feb 2026filed 12 Feb 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—22,194 at $0.00filing
10 Feb 2026filed 12 Feb 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—9,005 at $0.00filing
10 Feb 2026filed 12 Feb 2026COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code F$130K2,781 at $46.75filing
17 Mar 2025filed 19 Mar 2025COLL Collegium PharmaceuticalPharmaceuticalsSEC FORM 4 Code A—68,449 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 David Dieter; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care2

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