Arnon Rosenthal, Chief Executive Officer at Alector, Inc. (ALEC), sold 140,000 shares at $25.00 ($3.5M) on 2021-11-08, disclosed to the SEC on 2021-11-10.
Open-market sale of $3.5M 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 | $25.00 | 15,000 | $375K | 10.7% |
| 2 | $25.00 | 55,000 | $1.4M | 39.3% |
| 3 | $25.00 | 15,000 | $375K | 10.7% |
| 4 | $25.00 | 55,000 | $1.4M | 39.3% |
| Total | $25.00 avg | 140,000 | $3.5M | 100% |
| Filing → |
| ALEC | SELL | 2026-03-03 | $347K | — | Filing → |
| ALEC | SELL | 2025-12-03 | $234K | — | Filing → |
| ALEC | SELL | 2025-09-04 | $129K | — | Filing → |