Verastem, Inc.
A biopharmaceutical company focused on fighting cancer, Verastem makes AVMAPKI FAKZYNJA CO-PACK (avutometinib/defactinib), a treatment for a rare form of ovarian cancer called low-grade serous ovarian cancer that received accelerated FDA approval in 2025. It's also developing VS-7375, an oral drug aimed at tumors driven by a common KRAS mutation. Based in the US, the company concentrates on the RAS/MAPK pathway, a key driver in many cancers.
Granted 663.8K · Sold 160.3K
Granted 52.7K · Sold 7.5K
Granted 133.2K · Sold 25.4K
Granted 108.0K
Granted 52.7K
Granted 52.7K
Granted 52.7K
Granted 52.7K
Granted 52.7K
Granted 50.0K
Granted 58.9K · Sold 14.6K
Granted 16.7K · Sold 22.0K
Granted 16.7K · Sold 8.6K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Paterson DanPresident and CEO, Director · 50 transactions | +573.7% | 591.2K | 663.8K | — | 160.3K |
| Stuglik Brian MDirector · 19 transactions | +49.1% | 137.1K | 52.7K | — | 7.5K |
| Calkins DanielChief Financial Officer · 34 transactions | +1248.5% | 117.2K | 133.2K | — | 25.4K |
| Bailey Michael PDirector · 1 transaction | — | 108.0K | 108.0K | — | — |
| Johnson JohnDirector · 3 transactions | — | 52.7K | 52.7K | — | — |
| Kapur AnilDirector · 3 transactions | — | 52.7K | 52.7K | — | — |
| Robertson MichelleDirector · 3 transactions | — | 52.7K | 52.7K | — | — |
| Rowinsky Eric KDirector · 3 transactions | — | 52.7K | 52.7K | — | — |
| Tollefson Karin AnnaDirector · 3 transactions | — | 52.7K | 52.7K | — | — |
| Ros MatthewChief Operating Officer · 1 transaction | — | 50.0Kas of Apr 2025 | 50.0K | — | — |
| Bunn Paul A.Director · 6 transactions | — | 44.3K | 58.9K | — | 14.6K |
| Gagnon Robert E.Director · 20 transactions | -11.4% | 41.7K | 16.7K | — | 22.0K |
| Kauffman MichaelDirector · 3 transactions | +8.3% | 8.7K | 16.7K | — | 8.6K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -238.3K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.