Verastem, Inc. (VSTM) Insider Trading
Over the last 3 months, VSTM insiders made 0 open-market buys and 4 sales, a net sale of -$109K (SEC Form 4). Over the last 6 months, 128 institutions increased and 60 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
4
Net (3m)
-$109.0K
Insider trades by month Buys Sells
Nov
Dec
Jan
Feb
May
Jun
Context3-month price -24.4%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 24, 2026 | Calkins Danielofficer: Chief Financial Officer | Sell | 4,032 | $4.18 |
| Jun 24, 2026 | Calkins Danielofficer: Chief Financial Officer | Sell | 57 | $4.13 |
| Jun 24, 2026 | Paterson Dandirector, officer: President and CEO | Sell | 20,871 | $4.18 |
| May 27, 2026 | BAILEY MICHAEL Pdirector | Grant | 108,000 | — |
| May 26, 2026 | Rowinsky Eric Kdirector | Grant | 36,000 | — |
| May 26, 2026 | ROBERTSON MICHELLEdirector | Grant | 36,000 | — |
| May 26, 2026 | Bunn Paul A.director | Grant | 36,000 | — |
| May 26, 2026 | Tollefson Karin Annadirector | Grant | 36,000 | — |
| May 26, 2026 | Kapur Anildirector | Grant | 36,000 | — |
| May 26, 2026 | Stuglik Brian Mdirector | Grant | 36,000 | — |
| May 26, 2026 | JOHNSON JOHNdirector | Grant | 36,000 | — |
| May 6, 2026 | Paterson Dandirector, officer: President and CEO | Sell | 806 | $5.82 |
| Mar 23, 2026 | Calkins Danielofficer: Chief Financial Officer | Grant | 57 | $5.74 |
| Feb 5, 2026 | Paterson Dandirector, officer: President and CEO | Sell | 970 | $6.69 |
| Jan 23, 2026 | Calkins Danielofficer: Chief Financial Officer | Grant | 16,665 | — |
| Jan 23, 2026 | Paterson Dandirector, officer: President and CEO | Grant | 213,785 | — |
| Jan 14, 2026 | Calkins Danielofficer: Chief Financial Officer | Sell | 5,039 | $7.16 |
| Jan 14, 2026 | Paterson Dandirector, officer: President and CEO | Sell | 10,321 | $7.16 |
| Jan 8, 2026 | Kauffman Michaeldirector, officer: President of Development | Grant | 200,000 | $6.88 |
| Dec 29, 2025 | Calkins Danielofficer: Chief Financial Officer | Sell | 80 | $7.86 |
| Dec 18, 2025 | Gagnon Robert E.director | Sell | 283 | $9.14 |
| Dec 18, 2025 | Paterson Dandirector, officer: President and CEO | Sell | 393 | $9.14 |
| Dec 18, 2025 | Stuglik Brian Mdirector | Sell | 592 | $9.14 |
| Dec 12, 2025 | Paterson Dandirector, officer: President and CEO | Sell | 2,000 | $10.07 |
| Dec 9, 2025 | Paterson Dandirector, officer: President and CEO | Sell | 2,000 | $10.61 |
| Dec 4, 2025 | Paterson Dandirector, officer: President and CEO | Sell | 2,000 | $10.32 |
| Dec 1, 2025 | Paterson Dandirector, officer: President and CEO | Sell | 2,000 | $10.32 |
| Nov 25, 2025 | Bunn Paul A.director | Option | 6,250 | $3.27 |
| Nov 25, 2025 | Paterson Dandirector, officer: President and CEO | Sell | 2,000 | $10.00 |
| Nov 25, 2025 | Kauffman Michaeldirector | Sell | 8,550 | $10.00 |
Source: VSTM SEC Form 4 filings, latest Jun 24, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their VSTM positions over the last 6 months (SEC Form 13F).
Increased
128
New positions
79
Reduced
60
Sold out
45
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6.6M | May 15, 2026 |
| RTW INVESTMENTS, LP | Increased | 6.6M | Feb 17, 2026 |
| RTW INVESTMENTS, LP | Unchanged | 6.6M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 6.2M | May 13, 2026 |
| DEEP TRACK CAPITAL, LP | New Position | 5.7M | Feb 13, 2026 |
| DEEP TRACK CAPITAL, LP | Unchanged | 5.7M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 4.8M | Feb 12, 2026 |
| ARMISTICE CAPITAL, LLC | Increased | 4.6M | May 15, 2026 |
| VANGUARD GROUP INC | Increased | 4.2M | Jan 29, 2026 |
| POLAR CAPITAL HOLDINGS PLC | Increased | 3.9M | Feb 17, 2026 |
| NANTAHALA CAPITAL MANAGEMENT, LLC | Increased | 3.6M | May 15, 2026 |
| ARMISTICE CAPITAL, LLC | Increased | 3.5M | Feb 17, 2026 |
| STATE STREET CORP | Increased | 3.5M | May 15, 2026 |
| STONEPINE CAPITAL MANAGEMENT, LLC | Increased | 3.3M | May 14, 2026 |
| STATE STREET CORP | Increased | 3.2M | Feb 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.