Marc Grasso is CFO at Alector, Inc. (ALEC). They have made 14 open-market trades across 2 companies since 2020, most recently 2026-03-13.
CIK 0001748894
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 14 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ALEC | SELL | 2025-06-02 | 2025-06-04 | $1.34 | $22K | -2.6% | -7.1% | +67.1% |
| ALEC | SELL | 2025-03-03 | 2025-03-05 | $1.47 | $27K | -8.6% | -32.5% | -2.0% |
| ALEC | SELL | 2024-12-02 | 2024-12-03 | $2.52 | $42K | -16.2% | -19.6% | -40.0% |
| ALEC | SELL | 2024-09-03 | 2024-09-04 | $4.88 | $36K | +22.9% | +0.0% | -45.5% |
| ALEC | SELL | 2024-06-03 | 2024-06-04 | $4.80 | $33K | -1.9% | -8.0% | -1.0% |
| ALEC | SELL | 2024-03-04 | 2024-03-05 | $6.92 | $40K | -10.9% | -16.2% | -26.8% |
| ALEC | SELL | 2023-12-04 | 2023-12-06 | $5.56 | $25K | +44.9% | +33.0% | +19.6% |
| ALEC | SELL | 2023-09-05 | 2023-09-06 | $5.19 | $6K | +18.1% | +28.7% | +5.8% |
| ALEC | SELL | 2023-06-02 | 2023-06-05 | $6.90 | $7K | +7.8% | -13.3% | -26.5% |
| ALEC | SELL | 2023-03-02 | 2023-03-03 | $8.32 | $11K | -18.4% | -21.3% | -13.5% |
| KURA | SELL | 2020-09-14 | 2020-09-15 | $29.00 | $290K | +4.6% | +19.4% | +44.2% |
| KURA | SELL | 2020-09-08 | 2020-09-10 | $26.00 | $260K | +8.1% | +22.5% | +42.2% |
| KURA | SELL | 2020-08-25 | 2020-08-26 | $23.00 | $230K | +8.3% | +26.9% | +53.8% |
| KURA | SELL | 2020-08-07 | 2020-08-11 | $20.00 | $200K | +3.0% | +29.9% | +82.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.