Key facts
- VSTM - Verastem, Inc. has 16 insiders with reported activity on this page.
- Net insider value flow over the last year: -$1,383,621.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 16 Insiders of Verastem, Inc.
- Symbol
- VSTM on Nasdaq
- Location
- Needham, MA
Change
- Buy value: ; sell value: $1,383,620.
- Net share flow: -168,564.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$1,383,621.
Buys
$0
Shares: 0
Insiders: 0
Sells
$1,383,621
Shares: 168,564
Insiders: 6
Net
-$1,383,621
Shares: -168,564
Insiders: -6
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 806 | $0 | $4,691 | -$4,691 |
| 3-6 | 0 | 60,478 | $0 | $563,185 | -$563,185 |
| 6-9 | 0 | 12,972 | $0 | $120,958 | -$120,958 |
| 9-12 | 0 | 94,308 | $0 | $694,786 | -$694,786 |
Verastem, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| BVF PARTNERS L P/IL | 10%+ Owner | $10,888,165 | Mixed | 25 Jan 2022 | ||
| Dan Paterson | President and CEO, Director | $3,562,497 | -$512,199 | -13% | Filing P/S | 04 May 2026 |
| Brian M. Stuglik | Director | $924,483 | -$14,631 | -1.6% | Filing P/S | 16 Dec 2025 |
| Daniel Calkins | Chief Financial Officer | $692,777 | -$58,658 | -7.8% | Mixed | 20 Mar 2026 |
| Robert E. Gagnon | Director | $380,936 | -$6,998 | -1.8% | Filing P/S | 16 Dec 2025 |
| Matthew Ros | Chief Operating Officer | $352,000 | Mixed | 01 Apr 2025 | ||
| John Johnson | Director | $116,495 | Mixed | 22 May 2025 | ||
| Karin Anna Tollefson | Director | $116,495 | Mixed | 22 May 2025 | ||
| Michelle Robertson | Director | $116,495 | Mixed | 22 May 2025 | ||
| Anil Kapur | Director | $116,495 | Mixed | 22 May 2025 | ||
| Eric K. Rowinsky | Director | $116,495 | Mixed | 22 May 2025 | ||
| Michael Kauffman | President of Development, Director | $86,660 | -$85,500 | -50% | Filing P/S | 06 Jan 2026 |
| Paul A. Bunn | Director | $27,248 | -$137,997 | -84% | Mixed | 21 Nov 2025 |
| Timothy J. Barberich | Director | Mixed | 28 Jun 2021 | |||
| Lesley Kim Solomon | Director | Mixed | 22 Jun 2022 | |||
| Gina Consylman | Director | Mixed | 28 Jun 2021 |
Top shareholders of Verastem, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Deep Track Capital, LP |
13D/G
13F
|
Company |
10%
|
7,719,390
|
$60,288,436 | $0 | 14 Nov 2025 | |
| RTW INVESTMENTS, LP |
13D/G
13F
|
Company |
9.9%
|
9,018,724
|
$49,152,046 | +$6,443,960 | 31 Mar 2026 | |
| Polar Capital Holdings Plc |
13D/G
|
— |
5.1%
|
3,398,899
|
$36,130,293 | $0 | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
6%
from 13D/G
|
6,194,925
|
$32,833,103 | — | 31 Mar 2026 | |
| Nantahala Capital Management, LLC |
13D/G
13F
|
Company |
4.7%
|
3,795,473
|
$29,301,052 | -$6,413,490 | 31 Dec 2025 | |
| Logos Global Management LP |
13D/G
13F
|
Company |
4.8%
|
3,175,000
|
$28,035,250 | -$2,207,500 | 30 Sep 2025 | |
| ARMISTICE CAPITAL, LLC |
13D/G
13F
|
Company |
5.2%
|
4,592,000
|
$25,026,400 | +$5,755,200 | 31 Mar 2026 | |
| Stonepine Capital Management, LLC |
13D/G
13F
|
Company |
4.3%
|
2,670,032
|
$23,576,383 | -$1,441,948 | 30 Sep 2025 | |
| Soleus Capital Master Fund, L.P. |
13D/G
|
Soleus Capital Management, L.P. |
7.3%
|
3,350,692
|
$23,421,337 | $0 | 31 Dec 2024 | |
| STATE STREET CORP |
13F
|
Company |
4%
|
3,516,651
|
$18,638,250 | — | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
|
Company |
3.8%
|
3,322,770
|
$17,610,681 | — | 31 Mar 2026 | |
| Foresite Capital Fund VI LP |
13D/G
|
— |
3.6%
|
3,146,631
|
$17,149,139 | +$62,735 | 31 Mar 2026 | |
| Foresite Capital Management VI LLC |
13F
|
Company |
3.6%
|
3,146,631
|
$16,677,144 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
2.8%
|
2,411,965
|
$12,783,414 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
2.6%
|
2,308,669
|
$12,235,945 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
2.6%
|
2,247,273
|
$11,910,548 | — | 31 Mar 2026 | |
| BIOTECHNOLOGY VALUE FUND L P |
13D/G
|
BVF PARTNERS L P/IL |
3.9%
|
2,500,000
|
$11,850,000 | -$15,266,739 | 11 Aug 2025 | |
| Rosalind Advisors, Inc. |
13F
|
Company |
2.4%
|
2,138,475
|
$11,333,918 | — | 31 Mar 2026 | |
| BVF PARTNERS L P/IL |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
994,353
|
$10,888,165 | — | 25 Jan 2022 | |
| Alyeska Investment Group, L.P. |
13F
13D/G
|
Company |
2.1%
from 13D/G
|
2,050,000
|
$10,865,000 | — | 31 Mar 2026 | |
| AIGH Capital Management LLC |
13F
|
Company |
2.3%
|
2,000,000
|
$10,600,000 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2%
|
1,717,557
|
$9,105,486 | — | 31 Mar 2026 | |
| J. Goldman & Co LP |
13F
|
Company |
1.9%
|
1,680,752
|
$8,907,986 | — | 31 Mar 2026 | |
| Orin Hirschman |
13D/G
|
— |
3.6%
|
2,003,179
|
$8,298,970 | -$2,960,715 | 30 Jun 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.7%
|
1,484,003
|
$7,865,216 | — | 31 Mar 2026 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
1.7%
|
1,476,028
|
$7,822,948 | — | 31 Mar 2026 | |
| ACORN CAPITAL ADVISORS, LLC |
13F
|
Company |
1.7%
|
1,469,153
|
$7,786,511 | — | 31 Mar 2026 | |
| Point72 Asset Management, L.P. |
13D/G
|
— |
1.3%
|
995,026
|
$7,681,601 | -$18,090,994 | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13D/G
13F
|
Company |
1.6%
|
1,360,391
|
$7,414,131 | -$18,566,858 | 31 Mar 2026 | |
| NEXTBio Capital Management LP |
13F
|
Company |
1.5%
|
1,306,800
|
$6,926,040 | — | 31 Mar 2026 | |
| Soleus Private Equity Fund III, L.P. |
13D/G
|
Soleus Capital Management, L.P. |
1.8%
|
935,819
|
$6,541,375 | $0 | 31 Mar 2025 | |
| ORBIMED ADVISORS LLC |
13D/G
|
— |
2.4%
|
1,333,333
|
$6,319,998 | -$7,248,005 | 30 Jun 2025 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
1.3%
|
1,105,885
|
$5,861,190 | — | 31 Mar 2026 | |
| Ishara Investments LP |
13F
|
Company |
0.94%
|
820,000
|
$4,346,000 | — | 31 Mar 2026 | |
| Longaeva Partners L.P. |
13F
|
Company |
0.92%
|
807,755
|
$4,281,102 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.87%
|
756,875
|
$4,011,438 | — | 31 Mar 2026 | |
| Dan Paterson |
3/4/5
|
President and CEO, Director |
0.7%
|
612,113
|
$3,562,497 | -$512,199 | 04 May 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.76%
|
667,010
|
$3,535,153 | — | 31 Mar 2026 | |
| Exome Asset Management LLC |
13F
|
Company |
0.73%
|
636,700
|
$3,374,510 | — | 31 Mar 2026 | |
| BAKER BROS. ADVISORS LP |
13F
|
Company |
0.67%
|
584,757
|
$3,099,212 | — | 31 Mar 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.65%
|
570,618
|
$3,024,275 | — | 31 Mar 2026 | |
| Jefferies Financial Group Inc. |
13F
|
Company |
0.64%
|
556,016
|
$2,946,885 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.62%
|
543,689
|
$2,881,552 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.59%
|
515,786
|
$2,733,665 | — | 31 Mar 2026 | |
| Pinnacle Financial Partners, Inc. |
13F
|
Company |
0.57%
|
495,266
|
$2,624,910 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.57%
|
494,694
|
$2,621,878 | — | 31 Mar 2026 | |
| FMR LLC |
13F
|
Company |
0.54%
|
473,657
|
$2,510,383 | — | 31 Mar 2026 | |
| TORONTO DOMINION BANK |
13F
|
Company |
0.53%
|
460,413
|
$2,440,189 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.48%
|
416,985
|
$2,210,020 | — | 31 Mar 2026 | |
| XTX Topco Ltd |
13F
|
Company |
0.45%
|
395,834
|
$2,097,920 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for Verastem, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Dan Paterson | VSTM | Common Stock | Sale | -0.13% | $4,691 | $5.82 | -806 | 612,113 | 04 May 2026 | Direct |
| Daniel Calkins | VSTM | Common Stock | Award | -0.05% | -57 | 121,327 | 20 Mar 2026 | Direct | ||
| Dan Paterson | VSTM | Common Stock | Sale | -0.16% | $6,489 | $6.69 | -970 | 612,919 | 04 Feb 2026 | Direct |
| Daniel Calkins | VSTM | Common Stock | Award | 15.9% | 16,665 | 121,384 | 21 Jan 2026 | Direct | ||
| Dan Paterson | VSTM | Common Stock | Award | 53.4% | 213,785 | 613,889 | 21 Jan 2026 | Direct | ||
| Dan Paterson | VSTM | Common Stock | Sale | -2.51% | $73,898 | $7.16 | -10,321 | 400,104 | 12 Jan 2026 | Direct |
| Daniel Calkins | VSTM | Common Stock | Sale | -4.59% | $36,079 | $7.16 | -5,039 | 104,719 | 12 Jan 2026 | Direct |
| Michael Kauffman | VSTM | Stock Option (right to buy) | Award | 200,000 | 200,000 | 06 Jan 2026 | Direct | |||
| Daniel Calkins | VSTM | Common Stock | Sale | -0.07% | $629 | $7.86 | -80 | 109,758 | 24 Dec 2025 | Direct |
| Brian M. Stuglik | VSTM | Common Stock | Sale | -0.58% | $5,411 | $9.14 | -592 | 101,147 | 16 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.1% | $3,592 | $9.14 | -393 | 410,425 | 16 Dec 2025 | Direct |
| Robert E. Gagnon | VSTM | Common Stock | Sale | -0.67% | $2,587 | $9.14 | -283 | 41,678 | 16 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.48% | $20,000 | $10.00 | -2,000 | 410,818 | 11 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.48% | $20,140 | $10.07 | -2,000 | 412,818 | 10 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.48% | $20,500 | $10.25 | -2,000 | 414,818 | 09 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.48% | $21,000 | $10.50 | -2,000 | 416,818 | 08 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.48% | $21,220 | $10.61 | -2,000 | 418,818 | 05 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.47% | $20,000 | $10.00 | -2,000 | 420,818 | 04 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.47% | $20,000 | $10.00 | -2,000 | 422,818 | 03 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.47% | $20,640 | $10.32 | -2,000 | 424,818 | 02 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.47% | $20,780 | $10.39 | -2,000 | 426,818 | 01 Dec 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.46% | $21,580 | $10.79 | -2,000 | 428,818 | 28 Nov 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.46% | $20,640 | $10.32 | -2,000 | 430,818 | 26 Nov 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.46% | $20,000 | $10.00 | -2,000 | 432,818 | 25 Nov 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.46% | $20,000 | $10.00 | -2,000 | 434,818 | 24 Nov 2025 | Direct |
| Paul A. Bunn | VSTM | Common Stock | Options Exercise | 300% | 6,250 | 8,333 | 21 Nov 2025 | Direct | ||
| Paul A. Bunn | VSTM | Common Stock | Sale | -75% | $62,500 | $10.00 | -6,250 | 2,083 | 21 Nov 2025 | Direct |
| Paul A. Bunn | VSTM | Stock Options (right to buy) | Options Exercise | -50% | -6,250 | 6,250 | 21 Nov 2025 | Direct | ||
| Michael Kauffman | VSTM | Common Stock | Sale | -49.7% | $85,500 | $10.00 | -8,550 | 8,666 | 21 Nov 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.46% | $20,000 | $10.00 | -2,000 | 436,818 | 21 Nov 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.75% | $32,146 | $9.74 | -3,299 | 438,818 | 03 Nov 2025 | Direct |
| Paul A. Bunn | VSTM | Common Stock | Sale | -50% | $75,497 | $9.06 | -8,333 | 8,333 | 09 Oct 2025 | Direct |
| Daniel Calkins | VSTM | Common Stock | Sale | -0.02% | $231 | $9.23 | -25 | 109,838 | 24 Sep 2025 | Direct |
| Daniel Calkins | VSTM | Common Stock | Sale | -0.05% | $518 | $9.08 | -57 | 109,863 | 22 Sep 2025 | Direct |
| Brian M. Stuglik | VSTM | Common Stock | Sale | -0.57% | $5,864 | $9.99 | -587 | 101,739 | 16 Sep 2025 | Direct |
| Robert E. Gagnon | VSTM | Common Stock | Sale | -0.67% | $2,807 | $9.99 | -281 | 41,961 | 16 Sep 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.09% | $3,896 | $9.99 | -390 | 442,117 | 16 Sep 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.3% | $7,739 | $5.81 | -1,332 | 442,507 | 06 Aug 2025 | Direct |
| Daniel Calkins | VSTM | Common Stock | Sale | -0.02% | $118 | $4.71 | -25 | 109,920 | 23 Jun 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -3.86% | $91,355 | $5.13 | -17,808 | 443,839 | 20 Jun 2025 | Direct |
| Daniel Calkins | VSTM | Common Stock | Sale | -3.6% | $21,084 | $5.13 | -4,110 | 109,945 | 20 Jun 2025 | Direct |
| Dan Paterson | VSTM | Common Stock | Sale | -0.07% | $1,893 | $5.65 | -335 | 461,647 | 16 Jun 2025 | Direct |
| Robert E. Gagnon | VSTM | Common Stock | Sale | -0.67% | $1,605 | $5.65 | -284 | 42,242 | 16 Jun 2025 | Direct |
| Brian M. Stuglik | VSTM | Common Stock | Sale | -0.58% | $3,356 | $5.65 | -594 | 102,326 | 16 Jun 2025 | Direct |
| Michelle Robertson | VSTM | Common Stock | Award | 100% | 8,333 | 16,666 | 22 May 2025 | Direct | ||
| Michelle Robertson | VSTM | Stock Option (right to buy) | Award | 12,500 | 12,500 | 22 May 2025 | Direct | |||
| Paul A. Bunn | VSTM | Common Stock | Award | 100% | 8,333 | 16,666 | 22 May 2025 | Direct | ||
| Paul A. Bunn | VSTM | Stock Option (right to buy) | Award | 12,500 | 12,500 | 22 May 2025 | Direct | |||
| Anil Kapur | VSTM | Common Stock | Award | 100% | 8,333 | 16,666 | 22 May 2025 | Direct | ||
| Anil Kapur | VSTM | Stock Option (right to buy) | Award | 12,500 | 12,500 | 22 May 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.