Arnon Rosenthal, Chief Executive Officer at Alector, Inc. (ALEC), sold 400,000 shares at $26.07 ($10.4M) on 2021-09-21, disclosed to the SEC on 2021-09-22.
Open-market sale of $10.4M 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.
Something here stands out, but not much.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $25.76 | 91,954 | $2.4M | 22.8% |
| 2 | $25.76 | 91,954 | $2.4M | 22.8% |
| 3 | $26.33 | 8,046 | $212K | 2.0% |
| 4 | $26.33 | 8,046 | $212K | 2.0% |
| 5 | $26.07 | 91,538 | $2.4M | 23.0% |
| 6 | $26.07 | 91,538 |
| $2.4M |
| 23.0% |
| 7 | $26.56 | 8,462 | $225K | 2.2% |
| 8 | $26.56 | 8,462 | $225K | 2.2% |
| Total | $25.96 avg | 400,000 | $10.4M | 100% |
| Filing → |
| ALEC | SELL | 2026-03-03 | $347K | — | Filing → |
| ALEC | SELL | 2025-12-03 | $234K | — | Filing → |
| ALEC | SELL | 2025-09-04 | $129K | — | Filing → |