Verastem, Inc. (VSTM) Insider Trading
Directors, officers and holders of more than 10% of VSTM report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 116 transactions on file: 0 with code P, 34 with code S and 16 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | Paterson Dan | President and CEO | S Sale | 44,121 | $8.00 | $352,968 |
| Oct 1, 2026 | Calkins Daniel | Chief Financial Officer | S Sale | 2,566 | $8.00 | $20,528 |
| Sep 30, 2026 | Paterson Dan | President and CEO | A Award | 106,893 | Not measured | Not measured |
| Sep 30, 2026 | Calkins Daniel | Chief Financial Officer | A Award | 8,333 | Not measured | Not measured |
| Sep 21, 2026 | Calkins Daniel | Chief Financial Officer | S Sale | 55 | $7.70 | $424 |
| Aug 3, 2026 | Paterson Dan | President and CEO | S Sale | 1,302 | $5.81 | $7,565 |
| Jun 22, 2026 | Calkins Daniel | Chief Financial Officer | S Sale | 57 | $4.13 | $235 |
| Jun 22, 2026 | Calkins Daniel | Chief Financial Officer | S Sale | 4,032 | $4.18 | $16,854 |
| Jun 22, 2026 | Paterson Dan | President and CEO | S Sale | 20,871 | $4.18 | $87,241 |
| May 21, 2026 | ROBERTSON MICHELLE | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | Kapur Anil | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | JOHNSON JOHN | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | Bunn Paul A. | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | Rowinsky Eric K | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | Stuglik Brian M | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | Tollefson Karin Anna | Director | A Award | 36,000 | Not measured | Not measured |
| May 21, 2026 | BAILEY MICHAEL P | Director | A Award | 108,000 | Not measured | Not measured |
| May 4, 2026 | Paterson Dan | President and CEO | S Sale | 806 | $5.82 | $4,691 |
| Mar 20, 2026 | Calkins Daniel | Chief Financial Officer | A Award | 57 | $5.74 | $327 |
| Feb 4, 2026 | Paterson Dan | President and CEO | S Sale | 970 | $6.69 | $6,489 |
| Jan 21, 2026 | Paterson Dan | President and CEO | A Award | 213,785 | Not measured | Not measured |
| Jan 21, 2026 | Calkins Daniel | Chief Financial Officer | A Award | 16,665 | Not measured | Not measured |
| Jan 12, 2026 | Paterson Dan | President and CEO | S Sale | 10,321 | $7.16 | $73,898 |
| Jan 12, 2026 | Calkins Daniel | Chief Financial Officer | S Sale | 5,039 | $7.16 | $36,079 |
| Jan 6, 2026 | Kauffman Michael | President of Development | A Award | 200,000 | Not measured | Not measured |
| Dec 24, 2025 | Calkins Daniel | Chief Financial Officer | S Sale | 80 | $7.86 | $629 |
| Dec 16, 2025 | Paterson Dan | President and CEO | S Sale | 393 | $9.14 | $3,592 |
| Dec 16, 2025 | Gagnon Robert E. | Director | S Sale | 283 | $9.14 | $2,587 |
| Dec 16, 2025 | Stuglik Brian M | Director | S Sale | 592 | $9.14 | $5,411 |
| Dec 11, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Dec 10, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.07 | $20,140 |
| Dec 9, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.25 | $20,500 |
| Dec 8, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.50 | $21,000 |
| Dec 5, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.61 | $21,220 |
| Dec 4, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Dec 3, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Dec 2, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.32 | $20,640 |
| Dec 1, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.39 | $20,780 |
| Nov 28, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.79 | $21,580 |
| Nov 26, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.32 | $20,640 |
| Nov 25, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Nov 24, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Nov 21, 2025 | Bunn Paul A. | Director | M Exercise | 6,250 | $3.27 | $20,438 |
| Nov 21, 2025 | Bunn Paul A. | Director | S Sale | 6,250 | $10.00 | $62,500 |
| Nov 21, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Nov 21, 2025 | Kauffman Michael | President of Development | S Sale | 8,550 | $10.00 | $85,500 |
| Nov 21, 2025 | Bunn Paul A. | Director | M Exercise | 6,250 | Not measured | Not measured |
| Nov 3, 2025 | Paterson Dan | President and CEO | S Sale | 2,000 | $10.00 | $20,000 |
| Nov 3, 2025 | Paterson Dan | President and CEO | S Sale | 1,299 | $9.35 | $12,146 |
| Oct 9, 2025 | Bunn Paul A. | Director | S Sale | 8,333 | $9.06 | $75,497 |
The full Form 4 history is on the VSTM company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.