| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kenkare-Mitra Sara | President and Head of R&D | C/O ALECTOR, INC., 131 OYSTER POINT BLVD., SUITE 600, SOUTH SAN FRANCISCO | /s/ Grace Wong-Sarad, by power of attorney | 2025-07-01 | 0001895592 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ALEC | Common Stock | Award | $0 | +54.7K | +10.68% | $0.00 | 567K | Jul 1, 2025 | Direct | F1 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ALEC | Employee Stock Option (right to buy) | Award | $0 | +18.3K | $0.00 | 18.3K | Jul 1, 2025 | Common Stock | 18.3K | $1.42 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | The reported shares are represented by restricted stock units, or RSUs, one half (1/2) of the total shares shall vest on December 1, 2025 and one fourth (1/4th) of the total shares shall vest quarterly thereafter. |
| F2 | One third (1/3rd) of the total shares subject to the option shall vest on November 1, 2025, and one twelfth (1/12th) of the total shares subject to the option shall vest in equal monthly installments thereafter, provided that the shares subject to the option will vest in full on July 1, 2026. |