VSTM insider buying and SEC filings, explained
Verastem, Inc. · CIK 1526119
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$1.1M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 1, 2026 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 44,121 shares at $8.00 ($353K), marked as a 10b5-1 plan trade. Holdings down 6% to 652,712 shares. | SEC filing Filed Oct 2, 2026, 5:15 PM ET |
| Oct 1, 2026 | Planned (10b5-1) | Daniel Calkins (CFO) sold 2,566 shares at $8.00 ($21K), marked as a 10b5-1 plan trade. Holdings down 2% to 123,781 shares. | SEC filing Filed Oct 2, 2026, 5:15 PM ET |
| Sep 21, 2026 | Planned (10b5-1) | Daniel Calkins (CFO) sold 55 shares at $7.70 ($424), marked as a 10b5-1 plan trade. Holdings down <1% to 118,014 shares. | SEC filing Filed Sep 23, 2026 |
| Aug 3, 2026 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 1,302 shares at $5.81 ($8K), marked as a 10b5-1 plan trade. Holdings down <1% to 589,940 shares. | SEC filing Filed Aug 5, 2026 |
| Jun 22, 2026 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 20,871 shares at $4.18 ($87K), marked as a 10b5-1 plan trade. Holdings down 3% to 591,242 shares. | SEC filing Filed Jun 24, 2026 |
| Jun 22, 2026 | Planned (10b5-1) | Daniel Calkins (CFO) sold 4,089 shares at about $4.18 ($17K), marked as a 10b5-1 plan trade. Holdings down 3% to 117,238 shares. | SEC filing Filed Jun 24, 2026 |
| May 4, 2026 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 806 shares at $5.82 ($5K), marked as a 10b5-1 plan trade. Holdings down <1% to 612,113 shares. | SEC filing Filed May 6, 2026 |
| Feb 4, 2026 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 970 shares at $6.69 ($6K), marked as a 10b5-1 plan trade. Holdings down <1% to 612,919 shares. | SEC filing Filed Feb 5, 2026 |
| Jan 12, 2026 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 10,321 shares at $7.16 ($74K), marked as a 10b5-1 plan trade. Holdings down 3% to 400,104 shares. | SEC filing Filed Jan 14, 2026 |
| Jan 12, 2026 | Planned (10b5-1) | Daniel Calkins (CFO) sold 5,039 shares at $7.16 ($36K), marked as a 10b5-1 plan trade. Holdings down 5% to 104,719 shares. | SEC filing Filed Jan 14, 2026 |
| Dec 24, 2025 | Planned (10b5-1) | Daniel Calkins (CFO) sold 80 shares at $7.86 ($629), marked as a 10b5-1 plan trade. Holdings down <1% to 109,758 shares. | SEC filing Filed Dec 29, 2025 |
| Dec 16, 2025 | Planned (10b5-1) | Brian M Stuglik (Director) sold 592 shares at $9.14 ($5K), marked as a 10b5-1 plan trade. Holdings down 1% to 101,147 shares. | SEC filing Filed Dec 18, 2025 |
| Dec 16, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 393 shares at $9.14 ($4K), marked as a 10b5-1 plan trade. Holdings down <1% to 410,425 shares. | SEC filing Filed Dec 18, 2025 |
| Dec 16, 2025 | Planned (10b5-1) | Robert E. Gagnon (Director) sold 283 shares at $9.14 ($3K), marked as a 10b5-1 plan trade. Holdings down 1% to 41,678 shares. | SEC filing Filed Dec 18, 2025 |
| Dec 10–11, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 4,000 shares between Dec 10, 2025 and Dec 11, 2025 at about $10.04 ($40K), marked as a 10b5-1 plan trade. Holdings down 1% to 410,818 shares. | SEC filing Filed Dec 12, 2025 |
| Dec 5–9, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 6,000 shares between Dec 5, 2025 and Dec 9, 2025 at about $10.45 ($63K), marked as a 10b5-1 plan trade. Holdings down 1% to 414,818 shares. | SEC filing Filed Dec 9, 2025 |
| Dec 2–4, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 6,000 shares between Dec 2, 2025 and Dec 4, 2025 at about $10.11 ($61K), marked as a 10b5-1 plan trade. Holdings down 1% to 420,818 shares. | SEC filing Filed Dec 4, 2025 |
| Nov 26–Dec 1, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 6,000 shares between Nov 26, 2025 and Dec 1, 2025 at about $10.50 ($63K), marked as a 10b5-1 plan trade. Holdings down 1% to 426,818 shares. | SEC filing Filed Dec 1, 2025 |
| Nov 21, 2025 | Planned (10b5-1) | Paul A. Bunn (Director) sold 6,250 shares at about $10.00 ($63K), marked as a 10b5-1 plan trade. Holdings down 75% to 2,083 shares. | SEC filing Filed Nov 25, 2025 |
| Nov 21, 2025 | Planned (10b5-1) | Michael Kauffman (Director) sold 8,550 shares at about $10.00 ($86K), marked as a 10b5-1 plan trade. Holdings down 50% to 8,666 shares. | SEC filing Filed Nov 25, 2025 |
| Nov 21–25, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 6,000 shares between Nov 21, 2025 and Nov 25, 2025 at $10.00 ($60K), marked as a 10b5-1 plan trade. Holdings down 1% to 432,818 shares. | SEC filing Filed Nov 25, 2025 |
| Nov 3, 2025 | Planned (10b5-1) | Dan Paterson (CEO and Director) sold 3,299 shares at about $9.74 ($32K), marked as a 10b5-1 plan trade. Holdings down 1% to 438,818 shares. | SEC filing Filed Nov 6, 2025 |
15 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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