VSTM insider transaction filings
Verastem, Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-08-05. Screen VSTM transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 3 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 4 legs across 3 filings by 2 insiders — 26,262 shares, $111,895 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 0.
- Largest priced transaction: sale of 20,871 shares @ $4.18 ($87,241) by Paterson Dan, filed 2026-06-24.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Paterson Dan — President and CEO, Director | 2 | — | 2 legs · 22,173 sh · $94,805 | — |
| Calkins Daniel — Chief Financial Officer | 1 | — | 2 legs · 4,089 sh · $17,089 | — |
Recent Form 4 filings — Verastem, Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-05 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 1,302 @ $5.81 | EDGAR |
| 2026-06-24 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 20,871 @ $4.18 | EDGAR |
| 2026-06-24 | 4 | Calkins Daniel — Chief Financial Officer | Sale (S): 4,032 @ $4.18 · Sale (S): 57 @ $4.13 | EDGAR |
| 2026-05-27 | 4 | BAILEY MICHAEL P — Director | Grant/award (A): 108,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | Tollefson Karin Anna — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | Stuglik Brian M — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | ROBERTSON MICHELLE — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | Kapur Anil — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | Bunn Paul A. — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | JOHNSON JOHN — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-26 | 4 | Rowinsky Eric K — Director | Grant/award (A): 36,000 @ $0 | EDGAR |
| 2026-05-06 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 806 @ $5.82 | EDGAR |
| 2026-03-23 | 4 | Calkins Daniel — Chief Financial Officer | Grant/award (A): 57 @ $5.74 | EDGAR |
| 2026-02-05 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 970 @ $6.69 | EDGAR |
| 2026-01-23 | 4 | Calkins Daniel — Chief Financial Officer | Grant/award (A): 16,665 @ $0 | EDGAR |
| 2026-01-23 | 4 | Paterson Dan — President and CEO, Director | Grant/award (A): 213,785 @ $0 | EDGAR |
| 2026-01-14 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 10,321 @ $7.16 | EDGAR |
| 2026-01-14 | 4 | Calkins Daniel — Chief Financial Officer | Sale (S): 5,039 @ $7.16 | EDGAR |
| 2026-01-08 | 4 | Kauffman Michael — President of Development, Director | Grant/award (A): 200,000 (derivative) @ $0 | EDGAR |
| 2025-12-29 | 4 | Calkins Daniel — Chief Financial Officer | Sale (S): 80 @ $7.86 | EDGAR |
| 2025-12-18 | 4 | Stuglik Brian M — Director | Sale (S): 592 @ $9.14 | EDGAR |
| 2025-12-18 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 393 @ $9.14 | EDGAR |
| 2025-12-18 | 4 | Gagnon Robert E. — Director | Sale (S): 283 @ $9.14 | EDGAR |
| 2025-12-12 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 2,000 @ $10.07 · Sale (S): 2,000 @ $10 | EDGAR |
| 2025-12-09 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 2,000 @ $10.61 · Sale (S): 2,000 @ $10.50 · Sale (S): 2,000 @ $10.25 | EDGAR |
| 2025-12-04 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 2,000 @ $10.32 · Sale (S): 2,000 @ $10 · Sale (S): 2,000 @ $10 | EDGAR |
| 2025-12-01 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 2,000 @ $10.32 · Sale (S): 2,000 @ $10.79 · Sale (S): 2,000 @ $10.39 | EDGAR |
| 2025-11-25 | 4 | Bunn Paul A. — Director | Sale (S): 6,250 @ $10 · Option exercise (M): 6,250 @ $3.27 · Option exercise (M): 6,250 (derivative) @ $0 | EDGAR |
| 2025-11-25 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 2,000 @ $10 · Sale (S): 2,000 @ $10 · Sale (S): 2,000 @ $10 | EDGAR |
| 2025-11-25 | 4 | Kauffman Michael — Director | Sale (S): 8,550 @ $10 | EDGAR |
| 2025-11-06 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 1,299 @ $9.35 · Sale (S): 2,000 @ $10 | EDGAR |
| 2025-10-14 | 4 | Bunn Paul A. — Director | Sale (S): 8,333 @ $9.06 | EDGAR |
| 2025-09-24 | 4 | Calkins Daniel — Chief Financial Officer | Sale (S): 57 @ $9.08 · Sale (S): 25 @ $9.23 | EDGAR |
| 2025-09-18 | 4 | Stuglik Brian M — Director | Sale (S): 587 @ $9.99 | EDGAR |
| 2025-09-18 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 390 @ $9.99 | EDGAR |
| 2025-09-18 | 4 | Gagnon Robert E. — Director | Sale (S): 281 @ $9.99 | EDGAR |
| 2025-08-06 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 1,332 @ $5.81 | EDGAR |
| 2025-06-24 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 17,808 @ $5.13 | EDGAR |
| 2025-06-24 | 4 | Calkins Daniel — Chief Financial Officer | Sale (S): 4,110 @ $5.13 · Sale (S): 25 @ $4.71 | EDGAR |
| 2025-06-20 | 4 | Paterson Dan — President and CEO, Director | Sale (S): 335 @ $5.65 | EDGAR |
| 2025-06-20 | 4 | Stuglik Brian M — Director | Sale (S): 594 @ $5.65 | EDGAR |
| 2025-06-20 | 4 | Gagnon Robert E. — Director | Sale (S): 284 @ $5.65 | EDGAR |
| 2025-05-27 | 4 | Bunn Paul A. — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | Kapur Anil — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | Stuglik Brian M — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | Tollefson Karin Anna — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | Gagnon Robert E. — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | JOHNSON JOHN — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | Kauffman Michael — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
| 2025-05-27 | 4 | Rowinsky Eric K — Director | Grant/award (A): 8,333 @ $0 · Grant/award (A): 12,500 (derivative) @ $0 | EDGAR |
Recent 8-K events — Verastem, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-07 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-06 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-23 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-17 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-26 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-07 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-04 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-04 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-08 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-12-31 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
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