SEC Form 4 · Updated Daily

COLL

— Collegium Pharmaceutical, Inc. Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
Rubric Capital Management LP	10%+ Owner	3,132,743	2025-08-13	S
Rosen David Efraim	10%+ Owner	3,132,743	2025-08-13	S
Karnani Vikram	Director · Officer	197,864	2026-02-10	F
Tupper Colleen	Officer	147,282	2026-02-10	F
SANTINI GINO	Director	112,483	2026-06-08	M
Smith Thomas B	Officer	90,651	2026-02-10	F
Freund John Gordon	Director	83,952	2026-05-18	S
Dieter David	Officer	77,071	2026-03-18	S
Dreyer Scott	Officer	71,770	2026-03-03	S
BOHLIN GAREN G	Director	71,000	2026-05-14	A
Fallon John A.	Director	64,634	2025-11-12	S
Balice-Gordon Rita J.	Director	61,370	2026-05-14	A
Paya Carlos V	Director	28,323	2026-05-14	A
Lurker Nancy	Director	26,758	2026-05-14	A
Glancy Donovan Michael	Director	17,482	2026-05-14	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-06-08	SANTINI GINO	Option exercise (derivative)	8,700	$0.00	0
2026-06-08	SANTINI GINO	Option exercise	8,700	$16.49	112,483
2026-05-18	Freund John Gordon	Open-market sale	20	$34.05	83,952
2026-05-15	Freund John Gordon	Option exercise (derivative)	8,700	$0.00	0
2026-05-15	Freund John Gordon	Open-market sale	4,127	$34.54	83,972
2026-05-15	Freund John Gordon	Option exercise	8,700	$16.49	88,099
2026-05-14	SANTINI GINO	Grant / award	8,741	$0.00	103,783
2026-05-14	Balice-Gordon Rita J.	Grant / award	8,741	$0.00	61,370
2026-05-14	Glancy Donovan Michael	Grant / award	17,482	$0.00	17,482
2026-05-14	BOHLIN GAREN G	Grant / award	8,741	$0.00	71,000
2026-05-14	Freund John Gordon	Grant / award	8,741	$0.00	79,399
2026-05-14	Paya Carlos V	Grant / award	8,741	$0.00	28,323
2026-05-14	Lurker Nancy	Grant / award	8,741	$0.00	26,758
2026-05-13	Lurker Nancy	Open-market sale	4,500	$35.97	18,017
2026-05-11	BOHLIN GAREN G	Option exercise (derivative)	8,700	$0.00	0
2026-05-11	BOHLIN GAREN G	Open-market sale	8,700	$37.18	62,259
2026-05-11	BOHLIN GAREN G	Option exercise	8,700	$16.49	70,959
2026-03-18	Dieter David	Open-market sale	13,976	$34.92	77,071
2026-03-17	Dieter David	Tax withholding	8,840	$35.72	68,231
2026-03-09	Dieter David	Open-market sale	6,224	$36.65	91,047
2026-03-03	Dreyer Scott	Open-market sale	3,559	$40.99	71,770
2026-03-03	Dreyer Scott	Open-market sale	46,417	$40.36	75,329
2026-02-10	Dreyer Scott	Tax withholding	21,615	$46.75	121,746
2026-02-10	Dreyer Scott	Tax withholding	9,977	$46.75	143,361
2026-02-10	Dreyer Scott	Grant / award	30,702	$0.00	153,338
2026-02-10	Dreyer Scott	Grant / award	19,023	$0.00	122,636
2026-02-10	Tupper Colleen	Tax withholding	26,679	$46.75	147,282
2026-02-10	Tupper Colleen	Tax withholding	11,861	$46.75	173,961
2026-02-10	Tupper Colleen	Grant / award	32,734	$0.00	185,822
2026-02-10	Tupper Colleen	Grant / award	26,421	$0.00	153,088
2026-02-10	Smith Thomas B	Tax withholding	11,538	$46.75	90,651
2026-02-10	Smith Thomas B	Tax withholding	5,897	$46.75	102,189
2026-02-10	Smith Thomas B	Grant / award	22,774	$0.00	108,086
2026-02-10	Smith Thomas B	Grant / award	14,268	$0.00	85,312
2026-02-10	Karnani Vikram	Tax withholding	11,296	$46.75	197,864
2026-02-10	Karnani Vikram	Grant / award	32,531	$0.00	209,160
2026-02-10	Karnani Vikram	Grant / award	79,264	$0.00	176,629
2026-02-10	Dieter David	Tax withholding	2,781	$46.75	97,271
2026-02-10	Dieter David	Grant / award	9,005	$0.00	100,052
2026-02-10	Dieter David	Grant / award	22,194	$0.00	91,047

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.