Comparable stake leader
Deep Track Capital, LP
SEC ownership of Verastem, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001526119.
Disclosed value leader
Deep Track Capital, LP
Comparable rows
50/50
Latest evidence
22 Jun 2026
- Public ticker
- VSTM on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Deep Track Capital, LP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Deep Track Capital, LP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
22 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001526119
- Issuer location
- Needham, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Verastem, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Deep Track Capital, LP
Disclosed value leader
Deep Track Capital, LP
Comparable rows
50/50
Latest evidence
22 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 10%
13D/G row: Deep Track Capital, LP
Showing 1-8 of 50 holder rows.
Quick read
Deep Track Capital, LP leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Deep Track Capital, LP's linked filing trail.
Comparable ownership
Top 5
Deep Track Capital, LP
10%
RTW INVESTMENTS, LP
9.9%
Soleus Capital Master Fund, L.P.
7.3%
BlackRock, Inc.
6%
ARMISTICE CAPITAL, LLC
5.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Deep Track Capital, LP |
13D/G
13F
Company
|
10%
|
$60,288,436
7,719,390 shares
|
$0 | 14 Nov 2025 |
| RTW INVESTMENTS, LP |
13D/G
13F
Company
|
9.9%
|
$49,152,046
9,018,724 shares
|
+$6,443,960 | 31 Mar 2026 |
| Soleus Capital Master Fund, L.P. |
13D/G
Soleus Capital Management, L.P.
|
7.3%
|
$23,421,337
3,350,692 shares
|
$0 | 31 Dec 2024 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6%
from 13D/G
|
$32,833,103
6,194,925 shares
|
— | 31 Mar 2026 |
| ARMISTICE CAPITAL, LLC |
13D/G
13F
Company
|
5.2%
|
$25,026,400
4,592,000 shares
|
+$5,755,200 | 31 Mar 2026 |
| Logos Global Management LP |
13D/G
13F
Company
|
4.8%
|
$28,035,250
3,175,000 shares
|
-$2,207,500 | 30 Sep 2025 |
| Polar Capital Holdings Plc |
13D/G
|
4.8%
|
$14,151,760
3,700,000 shares
|
+$1,151,651 | 31 Mar 2026 |
| Nantahala Capital Management, LLC |
13D/G
13F
Company
|
4.7%
|
$29,301,052
3,795,473 shares
|
-$6,413,490 | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$800,903.
Buys
$0
Insiders: 0
Sells
$800,903
Insiders: 6
Net
-$800,903
Shares: -100,548
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 100,548
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 25,766 | $0 | $109,021 | -$109,021 |
| 3-6 | 0 | 970 | $0 | $6,489 | -$6,489 |
| 6-9 | 0 | 62,807 | $0 | $588,842 | -$588,842 |
| 9-12 | 0 | 11,005 | $0 | $96,552 | -$96,552 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to Verastem, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
BVF PARTNERS L P/IL
Net 12M change
-$800,904
Latest report
22 Jun 2026
| 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 | $2,471,391 | -$506,192 | -17% | Filing P/S | 22 Jun 2026 |
| Brian M. Stuglik | Director | $726,879 | -$11,275 | -1.5% | Mixed | 21 May 2026 |
| Michael P. Bailey | Director | $572,400 | Mixed | 21 May 2026 | ||
| Daniel Calkins | Chief Financial Officer | $484,192 | -$54,546 | -10% | Filing P/S | 22 Jun 2026 |
| Robert E. Gagnon | Director | $380,936 | -$5,394 | -1.4% | Filing P/S | 16 Dec 2025 |
| Matthew Ros | Chief Operating Officer | $352,000 | Mixed | 01 Apr 2025 | ||
| Anil Kapur | Director | $279,129 | Mixed | 21 May 2026 | ||
| Karin Anna Tollefson | Director | $279,129 | Mixed | 21 May 2026 | ||
| Eric K. Rowinsky | Director | $279,129 | Mixed | 21 May 2026 | ||
| Michelle Robertson | Director | $279,129 | Mixed | 21 May 2026 | ||
| John Johnson | Director | $279,129 | Mixed | 21 May 2026 | ||
| Paul A. Bunn | Director | $234,964 | -$137,997 | -37% | Mixed | 21 May 2026 |
| Michael Kauffman | President of Development, Director | $86,660 | -$85,500 | -50% | Filing P/S | 06 Jan 2026 |
| Gina Consylman | Director | Mixed | 28 Jun 2021 | |||
| Timothy J. Barberich | Director | Mixed | 28 Jun 2021 | |||
| Lesley Kim Solomon | Director | Mixed | 22 Jun 2022 |
Recent insider transactions for Verastem, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Dan Paterson | VSTM | Common Stock | Sale | -3.41% | $87,241 | $4.18 | -20,871 | 591,242 | 22 Jun 2026 | Direct |
| Daniel Calkins | VSTM | Common Stock | Sale | -3.37% | $17,089 | $4.18 | -4,089 | 117,238 | 22 Jun 2026 | Direct |
| Michael P. Bailey | VSTM | Common Stock | Award | 108,000 | 108,000 | 21 May 2026 | Direct | |||
| Karin Anna Tollefson | VSTM | Common Stock | Award | 216% | 36,000 | 52,666 | 21 May 2026 | Direct | ||
| Brian M. Stuglik | VSTM | Common Stock | Award | 35.6% | 36,000 | 137,147 | 21 May 2026 | Direct | ||
| Eric K. Rowinsky | VSTM | Common Stock | Award | 216% | 36,000 | 52,666 | 21 May 2026 | Direct | ||
| Michelle Robertson | VSTM | Common Stock | Award | 216% | 36,000 | 52,666 | 21 May 2026 | Direct | ||
| Anil Kapur | VSTM | Common Stock | Award | 216% | 36,000 | 52,666 | 21 May 2026 | Direct | ||
| Paul A. Bunn | VSTM | Common Stock | Award | 432% | 36,000 | 44,333 | 21 May 2026 | Direct | ||
| John Johnson | VSTM | Common Stock | Award | 216% | 36,000 | 52,666 | 21 May 2026 | Direct | ||
| 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 |
* marks a reported price that did not pass the local price check.