| 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 | 04 Sep 2025 | 0001895592 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ALEC | Common Stock | Sale | $59,019 | -23,638 | -4.2% | $2.50 | 543,339 | 02 Sep 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | The reported shares were sold to satisfy the reporting person's tax obligations in connection with the vesting of restricted stock units, or RSUs. |
| F2 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $2.30 to $2.59. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff, the issuer, or any security holder of the issuer upon request. |