David Dieter

CIK: 0002061438

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (28.6%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (42.9%)

Compensation grants

Other (G, F, J, C, D, …)2 (28.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

COLL

COLLEGIUM PHARMACEUTICAL, INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

COLL
COLLEGIUM PHARMACEUTICAL, INC
Mar 18, 2026
Sale(S)
Direct
14K shares at avg. $34.92$488K
COLL
COLLEGIUM PHARMACEUTICAL, INC
Mar 17, 2026
Tax Payment(F)
Direct
8.8K shares at avg. $35.72$316K
COLL
COLLEGIUM PHARMACEUTICAL, INC
Mar 9, 2026
Sale(S)
Direct
6.2K shares at avg. $36.65$228K
COLL
COLLEGIUM PHARMACEUTICAL, INC
Feb 10, 2026
Award(A)
Direct
22.2K shares-
COLL
COLLEGIUM PHARMACEUTICAL, INC
Feb 10, 2026
Award(A)
Direct
9K shares-
COLL
COLLEGIUM PHARMACEUTICAL, INC
Feb 10, 2026
Tax Payment(F)
Direct
2.8K shares at avg. $46.75$130K
COLL
COLLEGIUM PHARMACEUTICAL, INC
Mar 17, 2025
Award(A)
Direct
68.4K shares-

		Type	Shares	Price		Ownership
Mar 18, 2026	COLL COLLEGIUM PHARMACEUTICAL, INC	Sale(S)	13,976	$34.92	$488,099	Direct
Mar 17, 2026	COLL COLLEGIUM PHARMACEUTICAL, INC	Tax Payment(F)	8,840	$35.72	$315,765	Direct
Mar 9, 2026	COLL COLLEGIUM PHARMACEUTICAL, INC	Sale(S)	6,224	$36.65	$228,110	Direct
Feb 10, 2026	COLL COLLEGIUM PHARMACEUTICAL, INC	Award(A)	22,194	-	$0	Direct
Feb 10, 2026	COLL COLLEGIUM PHARMACEUTICAL, INC	Award(A)	9,005	-	$0	Direct
Feb 10, 2026	COLL COLLEGIUM PHARMACEUTICAL, INC	Tax Payment(F)	2,781	$46.75	$130,012	Direct
Mar 17, 2025	COLL COLLEGIUM PHARMACEUTICAL, INC	Award(A)	68,449	-	-	Direct

1-7 of 7 transactions

About Dieter David

Dieter David (SEC CIK 0002061438) files insider reports with the SEC as EVP & General Counsel of COLLEGIUM PHARMACEUTICAL, INC (COLL).

Signal8 holds 6 ownership filings by Dieter David (1 Form 3, 5 Form 4), filed between Mar 19, 2025 and Apr 3, 2026. Those filings report 7 transactions, from Mar 17, 2025 to Mar 18, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Dieter David's filings is in STOUGHTON, MA.

Recent filings by Dieter David

Mar 18, 2026: Open-market sale of COLL shares (Form 4, code S).
Mar 17, 2026: Tax withholding of COLL shares (Form 4, code F).
Mar 9, 2026: Open-market sale of COLL shares (Form 4, code S).
Feb 10, 2026: Grants or awards of COLL shares (2 lines, Form 4, code A).
Feb 10, 2026: Tax withholding of COLL shares (Form 4, code F).

Other insiders filing for COLLEGIUM PHARMACEUTICAL, INC (COLL)

SANTINI GINO, Director
Freund John Gordon, Director
Lurker Nancy, Director
Paya Carlos V, Director
Glancy Donovan Michael, Director
BOHLIN GAREN G, Director

How to read Form 4 transaction codes