VSTM
Verastem, Inc.
NASDAQ · Healthcare · Biotechnology · US
$8.20
+2.76%0
Insider buys (3m)
4
Insider sells (3m)
-$111.9K
Net value (3m)
+111.9%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 5, 2026 | Paterson Dan · director, officer: President and CEO | Sale | 1,302 | $5.81 |
| Jun 24, 2026 | Calkins Daniel · officer: Chief Financial Officer | Sale | 4,032 | $4.18 |
| Jun 24, 2026 | Calkins Daniel · officer: Chief Financial Officer | Sale | 57 | $4.13 |
| Jun 24, 2026 | Paterson Dan · director, officer: President and CEO | Sale | 20,871 | $4.18 |
| May 27, 2026 | BAILEY MICHAEL P · director | A-Award | 108,000 | $0.00 |
| May 26, 2026 | JOHNSON JOHN · director | A-Award | 36,000 | $0.00 |
| May 26, 2026 | Bunn Paul A. · director | A-Award | 36,000 | $0.00 |
| May 26, 2026 | ROBERTSON MICHELLE · director | A-Award | 36,000 | $0.00 |
| May 26, 2026 | Rowinsky Eric K · director | A-Award | 36,000 | $0.00 |
| May 26, 2026 | Tollefson Karin Anna · director | A-Award | 36,000 | $0.00 |
| May 26, 2026 | Kapur Anil · director | A-Award | 36,000 | $0.00 |
| May 26, 2026 | Stuglik Brian M · director | A-Award | 36,000 | $0.00 |
| May 6, 2026 | Paterson Dan · director, officer: President and CEO | Sale | 806 | $5.82 |
| Mar 23, 2026 | Calkins Daniel · officer: Chief Financial Officer | A-Award | 57 | $5.74 |
| Feb 5, 2026 | Paterson Dan · director, officer: President and CEO | Sale | 970 | $6.69 |
| Jan 23, 2026 | Calkins Daniel · officer: Chief Financial Officer | A-Award | 16,665 | $0.00 |
| Jan 23, 2026 | Paterson Dan · director, officer: President and CEO | A-Award | 213,785 | $0.00 |
| Jan 14, 2026 | Paterson Dan · director, officer: President and CEO | Sale | 10,321 | $7.16 |
| Jan 14, 2026 | Calkins Daniel · officer: Chief Financial Officer | Sale | 5,039 | $7.16 |
| Jan 8, 2026 | Kauffman Michael · director, officer: President of Development | A-Award | 200,000 | $6.88 |
| Dec 29, 2025 | Calkins Daniel · officer: Chief Financial Officer | Sale | 80 | $7.86 |
| Dec 18, 2025 | Gagnon Robert E. · director | Sale | 283 | $9.14 |
| Dec 18, 2025 | Paterson Dan · director, officer: President and CEO | Sale | 393 | $9.14 |
| Dec 18, 2025 | Stuglik Brian M · director | Sale | 592 | $9.14 |
| Dec 12, 2025 | Paterson Dan · director, officer: President and CEO | Sale | 2,000 | $10 |
| Dec 9, 2025 | Paterson Dan · director, officer: President and CEO | Sale | 2,000 | $11 |
| Dec 4, 2025 | Paterson Dan · director, officer: President and CEO | Sale | 2,000 | $10 |
| Dec 1, 2025 | Paterson Dan · director, officer: President and CEO | Sale | 2,000 | $10 |
| Nov 25, 2025 | Bunn Paul A. · director | M-Exempt | 6,250 | $3.27 |
| Nov 25, 2025 | Paterson Dan · director, officer: President and CEO | Sale | 2,000 | $10 |
Institutional positioning
13F filings over the trailing two quarters
New 74Increased 139Reduced 69Sold out 30
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 9,192,447 | Aug 7, 2026 |
| ARMISTICE CAPITAL, LLC | Increased | 7,024,000 | Aug 14, 2026 |
| RTW INVESTMENTS, LP | Increased | 6,635,793 | Aug 14, 2026 |
| RTW INVESTMENTS, LP | Unchanged | 6,576,306 | May 15, 2026 |
| BLACKROCK, INC. | Increased | 6,194,925 | May 13, 2026 |
| DEEP TRACK CAPITAL, LP | Unchanged | 5,740,850 | May 15, 2026 |
| Deep Track Capital, LP | Unchanged | 5,740,850 | Aug 14, 2026 |
| STATE STREET CORP | Increased | 5,133,859 | Aug 7, 2026 |
| ARMISTICE CAPITAL, LLC | Increased | 4,592,000 | May 15, 2026 |
| Rosalind Advisors, Inc. | Increased | 3,986,509 | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 3,851,508 | Aug 13, 2026 |
| NANTAHALA CAPITAL MANAGEMENT, LLC | Increased | 3,584,820 | May 15, 2026 |
| Nantahala Capital Management, LLC | Unchanged | 3,584,820 | Aug 19, 2026 |
| STATE STREET CORP | Increased | 3,516,651 | May 15, 2026 |
| Stonepine Capital Management, LLC | Increased | 3,349,627 | Aug 17, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 5, 2026