Arnon Rosenthal, Chief Executive Officer at Alector, Inc. (ALEC), sold 219,250 shares at $25.10 ($5.5M) on 2021-09-23, disclosed to the SEC on 2021-09-23.
Open-market sale of $5.5M ALEC by Chief Executive Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $25.29 | 94,717 | $2.4M | 43.2% |
| 2 | $25.29 | 94,717 | $2.4M | 43.2% |
| 3 | $26.10 | 5,283 | $138K | 2.5% |
| 4 | $26.10 | 5,283 | $138K | 2.5% |
| 5 | $25.10 | 9,625 | $242K | 4.4% |
| 6 | $25.10 | 9,625 |
| $242K |
| 4.4% |
| Total | $25.31 avg | 219,250 | $5.5M | 100% |
| Filing → |
| ALEC | SELL | 2026-03-03 | $347K | — | Filing → |
| ALEC | SELL | 2025-12-03 | $234K | — | Filing → |
| ALEC | SELL | 2025-09-04 | $129K | — | Filing → |