🕵️ Verastem, Inc. ($VSTM)
SEC insider & ownership activity, last 12 months · CIK 1526119 · every row links its SEC filing
Over the last 12 months insiders sold $801K with no open-market buying against it. Dan Paterson sold $506K through a 10b5-1 trading plan in 23 lots (Aug–Jun). 3 planned sales are pending, the largest $188K (Robert E. Gagnon). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 6 sellers, $801K (36 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Dan Paterson | 0 | – | 23 | $506K | Jun 22, 2026 |
| Paul A. Bunn | 0 | – | 2 | $138K | Nov 21, 2025 |
| Kauffman Michael | 0 | – | 1 | $86K | Nov 21, 2025 |
| Calkins Daniel | 0 | – | 6 | $55K | Jun 22, 2026 |
| Brian M. Stuglik | 0 | – | 2 | $11K | Dec 16, 2025 |
| Robert E. Gagnon | 0 | – | 2 | $5K | Dec 16, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| DEEP Track Capital, LP | 10.0% | 13G | Nov 21, 2025 | filing ↗ | |
| DEEP Track Biotechnology Master Fund, Ltd. | 10.0% | 13G | Nov 21, 2025 | filing ↗ | |
| David Kroin | 10.0% | 13G | Nov 21, 2025 | filing ↗ | |
| RTW Investments, LP | 9.9% | 13G | May 15, 2026 | filing ↗ | |
| Roderick Wong | 9.9% | 13G | May 15, 2026 | filing ↗ | |
| Roderick WONG, M.D. | 8.3% | 13G | May 15, 2025 | filing ↗ | |
| Soleus GP LLC | 7.3% | 13G | Feb 11, 2025 | filing ↗ | |
| Blackrock, Inc. | 6.0% | 13G | Oct 17, 2025 | filing ↗ | |
| Armistice Capital, LLC | 5.2% | 13G | May 15, 2026 | filing ↗ | |
| Steven Boyd | 5.2% | 13G | May 15, 2026 | filing ↗ | |
| Foresite Capital Management VI, LLC | 5.1% | 13G | Oct 23, 2025 | filing ↗ | |
| Polar Capital Holdings PLC | exited | 13G | Jul 8, 2026 | filing ↗ | |
| Polar Capital LLP | exited | 13G | Jul 8, 2026 | filing ↗ | |
| Polar Capital Funds PLC - Biotechnology Fund | exited | 13G | Jul 8, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Robert E. Gagnon | $188K | Jul 23, 2026 | filing ↗ |
| Robert E. Gagnon | $90K | Jun 25, 2026 | filing ↗ |
| Dan Paterson | $87K | Jun 22, 2026 | filing ↗ |
| Robert E. Gagnon | $88K | May 27, 2026 | filing ↗ |
| Dan Paterson | $36K | Jan 12, 2026 | filing ↗ |
| Dan Paterson | $74K | Jan 12, 2026 | filing ↗ |
| Paterson Dan | $118K | Dec 5, 2025 | filing ↗ |
| Kauffman Michael | $84K | Nov 21, 2025 | filing ↗ |
| Paul A. Bunn | $61K | Nov 21, 2025 | filing ↗ |
| Paul A. Bunn | $74K | Oct 9, 2025 | filing ↗ |
| Paterson Dan | $310K | Sep 17, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | Jun 23, 2026 | filing ↗ |
| Other events (8.01) | Jun 23, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 23, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 16, 2026 | filing ↗ |
| Other events (8.01) | Jun 16, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 16, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 21, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Mar 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 4, 2026 | filing ↗ |
| Earnings (2.02) | Feb 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 8, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 29, 2025 | filing ↗ |
| Other events (8.01) | Dec 29, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 29, 2025 | filing ↗ |
| Officer/director changes (5.02) | Dec 15, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 15, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 15, 2025 | filing ↗ |
| Other events (8.01) | Nov 13, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 13, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 23, 2025 | filing ↗ |
| Other events (8.01) | Oct 23, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 23, 2025 | filing ↗ |