Dan Paterson is CEO & President at Verastem, Inc. (VSTM). They have made 39 open-market trades across 1 company since 2014, most recently 2026-10-01.
CIK 0001563202
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.
5 open-market purchases totalling $68K since 2014, against 34 sales. Across 5 scored buys the stock is down 21.8% at ninety days, and 16.2 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| VSTM | 652,712 | $5.7M |
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.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 0% | 0% |
| Avg Move | -21.7% | -11.4% | -21.8% |
| Alpha | -15.8% | -8.9% | -16.2% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VSTM | SELL | 2026-10-01 | 2026-10-02 | $8.00 | $353K | -0.9% | — | — |
| VSTM | SELL | 2026-08-03 | 2026-08-05 | $5.81 | $8K | +20.2% | +37.2% | — |
| VSTM | SELL | 2026-06-22 | 2026-06-24 | $4.18 | $87K | +27.2% | +59.3% | +120.2% |
| VSTM | SELL | 2026-05-04 | 2026-05-06 | $5.82 | $5K | -28.6% | -38.0% | -2.3% |
| VSTM | SELL | 2026-02-04 | 2026-02-05 | $6.69 | $6K | -10.2% | -0.9% | -5.7% |
| VSTM | SELL | 2026-01-12 | 2026-01-14 | $7.16 | $74K | -4.6% | -14.5% | -10.0% |
| VSTM | SELL | 2025-12-16 | 2025-12-18 | $9.14 | $4K | -0.5% | -14.3% | -28.6% |
| VSTM | SELL · 10b5-1 | 2025-12-10 | 2025-12-12 | $10.04 | $40K | -19.0% | -26.9% | -39.9% |
| VSTM | SELL · 10b5-1 | 2025-12-05 | 2025-12-09 | $10.45 | $63K | -22.9% | -21.8% | -37.4% |
| VSTM | SELL · 10b5-1 | 2025-12-02 | 2025-12-04 | $10.11 | $61K | -18.6% | -35.2% | -45.2% |
| VSTM | SELL · 10b5-1 | 2025-11-26 | 2025-12-01 | $10.50 | $63K | -8.6% | -25.2% | -43.6% |
| VSTM | SELL · 10b5-1 | 2025-11-21 | 2025-11-25 | $10.00 | $60K | -0.7% | -21.9% | -44.8% |
| VSTM | SELL · 10b5-1 | 2025-11-03 | 2025-11-06 | $9.74 | $32K | +18.2% | +30.7% | -13.4% |
| VSTM | SELL | 2025-09-16 | 2025-09-18 | $9.99 | $4K | -6.5% | -15.0% | -15.7% |
| VSTM | SELL | 2025-08-06 | 2025-08-06 | $5.81 | $8K | +40.6% | +89.9% | +39.5% |
| VSTM | SELL | 2025-06-20 | 2025-06-24 | $5.13 | $183K | +3.8% | +17.0% | +102.0% |
| VSTM | SELL | 2025-06-16 | 2025-06-20 | $5.65 | $2K | -0.6% | +4.5% | +95.5% |
| VSTM | SELL | 2025-05-20 | 2025-05-20 | $8.13 | $954K | -24.3% | -38.0% | +0.3% |
| VSTM | SELL | 2025-05-05 | 2025-05-07 | $7.30 | $6K | +17.2% | -2.9% | -9.7% |
| VSTM | SELL | 2025-03-17 | 2025-03-19 | $6.95 | $2K | -13.1% | -10.5% | -23.5% |
| VSTM | SELL | 2025-02-04 | 2025-02-05 | $5.70 | $5K | -3.2% | +18.0% | +10.1% |
| VSTM | SELL | 2025-01-13 | 2025-01-14 | $5.24 | $45K | +8.8% | +16.8% | -8.6% |
| VSTM | SELL | 2024-12-16 | 2024-12-20 | $4.47 | $2K | +66.3% | +28.0% | +62.0% |
| VSTM | SELL | 2024-11-05 | 2024-11-07 | $3.84 | $3K | +8.8% | +50.8% | +63.5% |
| VSTM | SELL | 2024-09-19 | 2024-09-20 | $2.79 | $513 | +0.3% | +23.1% | +53.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.