Rosenthal Arnon (CIK 1757770) reported 9 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-03). Recent activity: Sell ALEC (87,216 shares), Buy ALEC (116,246 shares), Sell ALEC (81,864 shares), Sell ALEC (104,347 shares), Buy ALEC (174,167 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-03 | Alector, Inc. (ALEC) | Chief Executive Officer | Sell | 87,216 | $172,191 |
| 2026-03-13 | Alector, Inc. (ALEC) | Chief Executive Officer | Buy | 116,246 | $0 |
| 2026-03-03 | Alector, Inc. (ALEC) | Chief Executive Officer | Sell | 81,864 | $173,552 |
| 2025-12-03 | Alector, Inc. (ALEC) | Chief Executive Officer | Sell | 104,347 | $116,869 |
| 2025-11-12 | Alector, Inc. (ALEC) | Chief Executive Officer | Buy | 174,167 | $0 |
| 2025-09-04 | Alector, Inc. (ALEC) | Chief Executive Officer | Sell | 51,562 | $128,905 |
| 2025-07-01 | Alector, Inc. (ALEC) | Chief Executive Officer | Buy | 137,125 | $0 |
| 2025-06-04 | Alector, Inc. (ALEC) | Chief Executive Officer | Sell | 52,087 | $69,797 |
| 2025-03-05 | Alector, Inc. (ALEC) | Chief Executive Officer | Sell | 40,330 | $59,285 |
Source: SEC Form 4 filings · as of 2026-06-03