Verastem, Inc.
VSTM- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001526119
In the last 90 days, Verastem, Inc. insiders filed 0 open-market purchases and 2 sales; 156 institutions reported holding it in 13F filings for Q2 2026, worth $363.5M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Verastem, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 2 filings
- 2 insiders, $7.99K in total
- Insiders trading
- 2
- Net value
- −$7.99K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Verastem, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Calkins Daniel | Chief Financial Officer | 118,014 | Sep 23, 2026 | 6 |
| Paterson Dan | President and CEO | 589,940 | Aug 5, 2026 | 13 |
| Bailey Michael P | Director | 108,000 | May 27, 2026 | 1 |
| Rowinsky Eric K | Director | 52,666 | May 26, 2026 | 1 |
| Johnson John | Director | 52,666 | May 26, 2026 | 1 |
| Stuglik Brian M | Director | 137,147 | May 26, 2026 | 2 |
| Kapur Anil | Director | 52,666 | May 26, 2026 | 1 |
| Robertson Michelle | Director | 52,666 | May 26, 2026 | 1 |
| Bunn Paul A. | Director | 44,333 | May 26, 2026 | 3 |
| Tollefson Karin Anna | Director | 52,666 | May 26, 2026 | 1 |
| Kauffman Michael | President of Development | 8,666 | Jan 8, 2026 | 2 |
| Gagnon Robert E. | Director | 41,678 | Dec 18, 2025 | 1 |
| Ros Matthew | Chief Operating Officer | 50,000 | Apr 3, 2025 | 0 |
| Solomon Lesley Kim | Director | – | Dec 20, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 25, 2025 (view filing) | Nov 21 | 4 days | Bunn Paul A.Director | SSale | −6.25K | $10.00 | −$62.5K | −75.0%2.08K after | 10b5-1 |
| Dec 1, 2025 (view filing) | Nov 26-Dec 1 | 5 days | Paterson DanPresident and CEO | SSale | −6.00K | $10.50 | −$63.0K | −1.4%426.8K after | 3 lots10b5-1 |
| Dec 4, 2025 (view filing) | Dec 2-4 | 2 days | Paterson DanPresident and CEO | SSale | −6.00K | $10.11 | −$60.6K | −1.4%420.8K after | 3 lots10b5-1 |
| Dec 9, 2025 (view filing) | Dec 5-9 | 4 days | Paterson DanPresident and CEO | SSale | −6.00K | $10.45 | −$62.7K | −1.4%414.8K after | 3 lots10b5-1 |
| Dec 12, 2025 (view filing) | Dec 10-11 | 2 days | Paterson DanPresident and CEO | SSale | −4.00K | $10.04 | −$40.1K | −1.0%410.8K after | 2 lots10b5-1 |
| Dec 18, 2025 (view filing) | Dec 16 | 2 days | Gagnon Robert E.Director | SSale | −283 | $9.14 | −$2.59K | −0.7%41.7K after | 10b5-1 |
| Dec 18, 2025 (view filing) | Dec 16 | 2 days | Paterson DanPresident and CEO | SSale | −393 | $9.14 | −$3.59K | −0.1%410.4K after | 10b5-1 |
| Dec 18, 2025 (view filing) | Dec 16 | 2 days | Stuglik Brian MDirector | SSale | −592 | $9.14 | −$5.41K | −0.6%101.1K after | 10b5-1 |
| Dec 29, 2025 (view filing) | Dec 24 | 5 days | Calkins DanielChief Financial Officer | SSale | −80 | $7.86 | −$628.8 | −0.1%109.8K after | 10b5-1 |
| Jan 14, 2026 (view filing) | Jan 12 | 2 days | Calkins DanielChief Financial Officer | SSale | −5.04K | $7.16 | −$36.1K | −4.6%104.7K after | 10b5-1 |
| Jan 14, 2026 (view filing) | Jan 12 | 2 days | Paterson DanPresident and CEO | SSale | −10.3K | $7.16 | −$73.9K | −2.5%400.1K after | 10b5-1 |
| Feb 5, 2026 (view filing) | Feb 4 | 1 day | Paterson DanPresident and CEO | SSale | −970 | $6.69 | −$6.49K | −0.2%612.9K after | 10b5-1 |
| May 6, 2026 (view filing) | May 4 | 2 days | Paterson DanPresident and CEO | SSale | −806 | $5.82 | −$4.69K | −0.1%612.1K after | 10b5-1 |
| Jun 24, 2026 (view filing) | Jun 22 | 2 days | Calkins DanielChief Financial Officer | SSale | −4.09K | $4.18 | −$17.1K | −3.4%117.2K after | 2 lots10b5-1 |
| Jun 24, 2026 (view filing) | Jun 22 | 2 days | Paterson DanPresident and CEO | SSale | −20.9K | $4.18 | −$87.2K | −3.4%591.2K after | 10b5-1 |
| Aug 5, 2026 (view filing)4:37 PM ET | Aug 3 | 2 days | Paterson DanPresident and CEO | SSale | −1.30K | $5.81 | −$7.56K | −0.2%589.9K after | 10b5-1 |
| Sep 23, 2026 (view filing)8:10 PM ET | Sep 21 | 2 days | Calkins DanielChief Financial Officer | SSale | −55 | $7.70 | −$423.5 | 0.0%118.0K after | 10b5-1 |