Arnon Rosenthal, Chief Executive Officer at Alector, Inc. (ALEC), sold 87,216 shares at $1.97 ($172K) on 2026-06-02, disclosed to the SEC on 2026-06-03.
Seasonal sale ($172k) by Chief Executive Officer — this insider has traded ALEC in June in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| ALEC | SELL | 2025-12-03 | $234K | — | Filing → |
| ALEC | SELL | 2025-09-04 | $129K | — | Filing → |
| ALEC | SELL | 2025-06-04 | $140K | — | Filing → |