SEC Form 4 · Updated Daily

VSTM

— VERASTEM, 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
RA CAPITAL MANAGEMENT, L.P.	10%+ Owner · Director	16,142,051	2020-06-25	S
Kolchinsky Peter	10%+ Owner · Director	16,142,051	2020-06-25	S
Shah Rajeev M.	10%+ Owner · Director	16,142,051	2020-06-25	S
RA Capital Healthcare Fund LP	10%+ Owner · Director	16,142,051	2020-06-25	S
BVF PARTNERS L P/IL	10%+ Owner	10,753,294	2022-01-25	—
BIOTECHNOLOGY VALUE FUND L P	10%+ Owner	10,753,294	2022-01-25	—
BVF I GP LLC	10%+ Owner	10,753,294	2022-01-25	—
BIOTECHNOLOGY VALUE FUND II LP	Reporting Owner	10,753,294	2022-01-25	—
BVF II GP LLC	Reporting Owner	10,753,294	2022-01-25	—
Biotechnology Value Trading Fund OS LP	Reporting Owner	10,753,294	2022-01-25	—
BVF Partners OS Ltd.	Reporting Owner	10,753,294	2022-01-25	—
BVF GP HOLDINGS LLC	10%+ Owner	10,753,294	2022-01-25	—
BVF INC/IL	10%+ Owner	10,753,294	2022-01-25	—
LAMPERT MARK N	10%+ Owner	10,753,294	2022-01-25	—
Ridgeback Capital Investments L.P.	10%+ Owner	10,068,243	2020-03-06	C
Ridgeback Capital Management LP	10%+ Owner	10,068,243	2020-03-06	C
Ridgeback Capital Investments Ltd.	10%+ Owner	10,068,243	2020-03-06	C
CLARKE JOHN K	Director	2,329,121	2013-06-12	P
CHP III LP	10%+ Owner	2,329,121	2013-06-12	P
CHP III Management, L.L.C.	10%+ Owner	2,234,126	2012-01-27	P
Foley Todd	Director	2,033,333	2012-02-01	P
MPM BIOVENTURES V, L.P.	10%+ Owner	2,033,333	2012-02-01	P
MPM BIOVENTURES V GP LLC	10%+ Owner	2,033,333	2012-02-01	P
MPM BIOVENTURES V LLC	10%+ Owner	2,033,333	2012-02-01	P
MPM ASSET MANAGEMENT INVESTORS BV5 LLC	10%+ Owner	2,033,333	2012-02-01	P
EVNIN LUKE	10%+ Owner	2,033,333	2012-02-01	P
KAILIAN VAUGHN M	Reporting Owner	2,033,333	2012-02-01	P
Vander Vort John	Reporting Owner	2,033,333	2012-02-01	P
Scopa James Paul	Reporting Owner	2,033,333	2012-02-01	P
St Peter Steven	Reporting Owner	2,033,333	2012-02-01	P
GADICKE ANSBERT	10%+ Owner	2,029,593	2012-02-01	P
Bessemer Venture Partners VII Institutional L.P.	Reporting Owner	1,995,237	2012-02-01	C
BVP VII SPECIAL OPPORTUNITY FUND LP	10%+ Owner · Director	1,995,237	2012-02-01	C
Deer Management Co. LLC	10%+ Owner · Director	1,995,237	2012-02-01	C
Deer VII & Co. L.P.	10%+ Owner · Director	1,995,237	2012-02-01	C
Bessemer Venture Partners VII L.P.	10%+ Owner · Director	1,995,237	2012-02-01	C
Deer VII & Co. Ltd.	10%+ Owner · Director	1,995,237	2012-02-01	C
Longwood Fund, L.P.	10%+ Owner	1,919,898	2014-01-24	J
Paterson Dan	Director · Officer	696,833	2026-09-30	A
Westphal Christoph H	Director · Officer	665,224	2015-06-30	F
Gupta Piyush	10%+ Owner	442,857	2012-01-26	—
ALDRICH RICHARD	Director	408,142	2014-05-20	P
Weinberg Robert A	10%+ Owner	363,442	2012-01-26	—
LANDER ERIC S	10%+ Owner	358,892	2012-01-26	—
Forrester Robert	Director · Officer	221,234	2018-09-28	P
BARBERICH TIMOTHY J	Director	218,000	2020-12-04	P
Neumann Frank	Officer	150,000	2021-01-06	A
Stuglik Brian M	Director	137,147	2026-05-21	A
Calkins Daniel	Officer	126,347	2026-09-30	A
BAILEY MICHAEL P	Director	108,000	2026-05-21	A
Pachter Jonathan	Officer	62,249	2014-08-01	F
Rowinsky Eric K	Director	52,666	2026-05-21	A
ROBERTSON MICHELLE	Director	52,666	2026-05-21	A
JOHNSON JOHN	Director	52,666	2026-05-21	A
Tollefson Karin Anna	Director	52,666	2026-05-21	A
Kapur Anil	Director	52,666	2026-05-21	A
Ros Matthew	Officer	50,000	2025-04-01	A
Bunn Paul A.	Director	44,333	2026-05-21	A
Gagnon Robert E.	Director	41,678	2025-12-16	S
TERMEER HENRI A	Director	32,179	2014-12-23	P
Phanstiel S. Louise	Director	26,500	2014-12-29	P
Lobacki Joseph M	Officer	10,700	2018-09-28	P
Kauffman Michael	Director	8,666	2025-11-21	S
Chiapponi Joseph	Officer	6,502	2016-04-18	—
Bloom Steven H.	Officer	3,500	2018-06-08	P
FRIEDMAN PAUL A	Director	3,000	2014-12-24	P
SHERWIN STEPHEN A	Director	2,500	2014-12-26	P
Lawton Alison Frances	Director	2,500	2014-11-11	P
GREEN JOHN B	Officer	2,500	2015-06-29	P
Singh Monica	Officer	2,000	2015-06-29	P
Horobin Joanna	Officer	750	2014-12-29	P
Kraus Stephen	Director	0	2012-02-01	C

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-10-01	Calkins Daniel	Open-market sale	2,566	$8.00	123,781
2026-10-01	Paterson Dan	Open-market sale	44,121	$8.00	652,712
2026-09-30	Calkins Daniel	Grant / award	8,333	$0.00	126,347
2026-09-30	Paterson Dan	Grant / award	106,893	$0.00	696,833
2026-09-21	Calkins Daniel	Open-market sale	55	$7.70	118,014
2026-08-03	Paterson Dan	Open-market sale	1,302	$5.81	589,940
2026-06-22	Calkins Daniel	Open-market sale	57	$4.13	117,238
2026-06-22	Calkins Daniel	Open-market sale	4,032	$4.18	117,295
2026-06-22	Paterson Dan	Open-market sale	20,871	$4.18	591,242
2026-05-21	JOHNSON JOHN	Grant / award	36,000	$0.00	52,666
2026-05-21	Bunn Paul A.	Grant / award	36,000	$0.00	44,333
2026-05-21	Kapur Anil	Grant / award	36,000	$0.00	52,666
2026-05-21	ROBERTSON MICHELLE	Grant / award	36,000	$0.00	52,666
2026-05-21	Rowinsky Eric K	Grant / award	36,000	$0.00	52,666
2026-05-21	Stuglik Brian M	Grant / award	36,000	$0.00	137,147
2026-05-21	Tollefson Karin Anna	Grant / award	36,000	$0.00	52,666
2026-05-21	BAILEY MICHAEL P	Grant / award	108,000	$0.00	108,000
2026-05-04	Paterson Dan	Open-market sale	806	$5.82	612,113
2026-03-20	Calkins Daniel	Grant / award	57	$5.74	121,327
2026-02-04	Paterson Dan	Open-market sale	970	$6.69	612,919
2026-01-21	Paterson Dan	Grant / award	213,785	$0.00	613,889
2026-01-21	Calkins Daniel	Grant / award	16,665	$0.00	121,384
2026-01-12	Calkins Daniel	Open-market sale	5,039	$7.16	104,719
2026-01-12	Paterson Dan	Open-market sale	10,321	$7.16	400,104
2026-01-06	Kauffman Michael	Grant / award (derivative)	200,000	$0.00	200,000
2025-12-24	Calkins Daniel	Open-market sale	80	$7.86	109,758
2025-12-16	Gagnon Robert E.	Open-market sale	283	$9.14	41,678
2025-12-16	Paterson Dan	Open-market sale	393	$9.14	410,425
2025-12-16	Stuglik Brian M	Open-market sale	592	$9.14	101,147
2025-12-11	Paterson Dan	Open-market sale	2,000	$10.00	410,818
2025-12-10	Paterson Dan	Open-market sale	2,000	$10.07	412,818
2025-12-09	Paterson Dan	Open-market sale	2,000	$10.25	414,818
2025-12-08	Paterson Dan	Open-market sale	2,000	$10.50	416,818
2025-12-05	Paterson Dan	Open-market sale	2,000	$10.61	418,818
2025-12-04	Paterson Dan	Open-market sale	2,000	$10.00	420,818
2025-12-03	Paterson Dan	Open-market sale	2,000	$10.00	422,818
2025-12-02	Paterson Dan	Open-market sale	2,000	$10.32	424,818
2025-12-01	Paterson Dan	Open-market sale	2,000	$10.39	426,818
2025-11-28	Paterson Dan	Open-market sale	2,000	$10.79	428,818
2025-11-26	Paterson Dan	Open-market sale	2,000	$10.32	430,818

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