Data spanning the past 90 days through February 07, 2026 reveals that Verastem's three principal insider shareholders consist of President And Ceo Dan Paterson (612.92K shares), Chief Financial Officer Daniel Calkins (121.38K shares), Director Brian M Stuglik (101.15K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Dan Paterson | President And Ceo | 612,919 | 05 Feb, 2026 |
| Daniel Calkins | Chief Financial Officer | 121,384 | 23 Jan, 2026 |
| Brian M Stuglik | 101,147 | 18 Dec, 2025 | |
| Matthew Ros | Chief Operating Officer | 50,000 | 03 Apr, 2025 |
| Robert E. Gagnon | 41,678 | 18 Dec, 2025 | |
| Karin Anna Tollefson | 16,666 | 27 May, 2025 | |
| John Johnson | 16,666 | 27 May, 2025 | |
| Anil Kapur | 16,666 | 27 May, 2025 | |
| Michelle Robertson | 16,666 | 27 May, 2025 | |
| Eric K Rowinsky | 16,666 | 27 May, 2025 | |
| Michael Kauffman | 8,666 | 25 Nov, 2025 | |
| Paul A. Bunn | 8,333 | 25 Nov, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 04 Feb, 2026 | Dan Paterson | Common Stock | D | 970 | $6.69 | 612,919 | D | S |
| 21 Jan, 2026 | Dan Paterson | Common Stock | A | 213,785 | $0.00 | 613,889 | D | A |
| 21 Jan, 2026 | Daniel Calkins | Common Stock | A | 16,665 | $0.00 | 121,384 | D | A |
| 12 Jan, 2026 | Dan Paterson | Common Stock | D | 10,321 | $7.16 | 400,104 | D | S |
| 12 Jan, 2026 | Daniel Calkins | Common Stock | D | 5,039 | $7.16 | 104,719 | D | S |
| 24 Dec, 2025 | Daniel Calkins | Common Stock | D | 80 | $7.86 | 109,758 | D | S |
| 16 Dec, 2025 | Robert E. Gagnon | Common Stock | D | 283 | $9.14 | 41,678 | D | S |
| 16 Dec, 2025 | Robert E. Gagnon | - | - | 41,678 | D | |||
| 16 Dec, 2025 | Dan Paterson | Common Stock | D | 393 | $9.14 | 410,425 | D | S |
| 16 Dec, 2025 | Brian M Stuglik | Common Stock | D | 592 | $9.14 | 101,147 | D | S |
| 11 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.00 | 410,818 | D | S |
| 10 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.07 | 412,818 | D | S |
| 09 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.25 | 414,818 | D | S |
| 08 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.50 | 416,818 | D | S |
| 05 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.61 | 418,818 | D | S |
| 04 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.00 | 420,818 | D | S |
| 03 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.00 | 422,818 | D | S |
| 02 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.32 | 424,818 | D | S |
| 01 Dec, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.39 | 426,818 | D | S |
| 28 Nov, 2025 | Dan Paterson | Common Stock | D | 2,000 | $10.79 | 428,818 | D | S |