Daniel Calkins is CFO at Verastem, Inc. (VSTM). They have made 30 open-market trades across 1 company since 2022, most recently 2026-10-01.
CIK 0001951861
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 30 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| VSTM | 123,781 | $1.1M |
Shares reported on the most recent Form 4, priced at the 2026-10-02 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VSTM | SELL | 2026-10-01 | 2026-10-02 | $8.00 | $21K | -0.9% | — | — |
| VSTM | SELL | 2026-09-21 | 2026-09-23 | $7.70 | $424 | -1.7% | — | — |
| VSTM | SELL | 2026-06-22 | 2026-06-24 | $4.18 | $17K | +27.2% | +59.3% | +120.2% |
| VSTM | SELL | 2026-01-12 | 2026-01-14 | $7.16 | $36K | -4.6% | -14.5% | -10.0% |
| VSTM | SELL | 2025-12-24 | 2025-12-29 | $7.86 | $629 | +1.6% | -18.8% | -37.0% |
| VSTM | SELL | 2025-09-22 | 2025-09-24 | $9.13 | $748 | +1.7% | -6.1% | -6.4% |
| VSTM | SELL | 2025-06-20 | 2025-06-24 | $5.13 | $21K | +3.8% | +17.0% | +102.0% |
| VSTM | SELL | 2025-05-20 | 2025-05-20 | $8.13 | $181K | -24.3% | -38.0% | +0.3% |
| VSTM | SELL | 2025-03-20 | 2025-03-24 | $6.93 | $631 | -15.9% | +5.0% | -31.9% |
| VSTM | SELL | 2025-01-06 | 2025-01-08 | $6.94 | $42 | -2.8% | +1.9% | -18.2% |
| VSTM | SELL | 2024-12-20 | 2024-12-26 | $4.21 | $392 | +50.5% | +45.2% | +63.3% |
| VSTM | SELL | 2024-10-07 | 2024-10-09 | $2.86 | $17 | +21.4% | +34.4% | +122.4% |
| VSTM | SELL | 2024-09-20 | 2024-09-24 | $2.76 | $257 | +7.1% | +22.8% | +47.8% |
| VSTM | SELL | 2024-07-09 | 2024-07-11 | $2.62 | $18 | +18.5% | -23.4% | -1.0% |
| VSTM | SELL | 2024-06-24 | 2024-06-26 | $3.15 | $88 | -7.6% | -2.0% | -11.3% |
| VSTM | SELL | 2024-06-20 | 2024-06-20 | $3.16 | $212 | -10.5% | +4.3% | -17.4% |
| VSTM | SELL | 2024-04-05 | 2024-04-08 | $10.87 | $65 | -15.4% | -5.7% | -78.4% |
| VSTM | SELL | 2024-03-25 | 2024-03-27 | $12.02 | $301 | -0.4% | -20.4% | -75.1% |
| VSTM | SELL | 2024-03-20 | 2024-03-21 | $11.07 | $609 | +0.4% | -18.4% | -72.8% |
| VSTM | SELL | 2024-01-05 | 2024-01-09 | $8.50 | $51 | +5.8% | +33.8% | +18.0% |
| VSTM | SELL | 2023-12-26 | 2023-12-28 | $8.08 | $202 | +27.2% | +50.5% | +44.1% |
| VSTM | SELL | 2023-12-20 | 2023-12-21 | $7.93 | $452 | +5.2% | +32.2% | +46.6% |
| VSTM | SELL | 2023-10-05 | 2023-10-10 | $7.30 | $37 | -8.9% | -17.2% | +15.0% |
| VSTM | SELL | 2023-09-21 | 2023-09-25 | $9.32 | $2K | -16.8% | -29.0% | -13.6% |
| VSTM | SELL | 2023-07-06 | 2023-07-10 | $8.02 | $40 | +4.1% | +14.9% | -12.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.