| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Gallagher Carol Giltner | Director | C/O ATARA BIOTHERAPEUTICS, INC., 1280 RANCHO CONEJO BOULEVARD, THOUSAND OAKS | /s/ John Chao, Attorney-in-Fact for Carol Gallagher | 2025-06-12 | 0001329959 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ATRA | Common Stock | Award | $0 | +7.83K | +31.08% | $0.00 | 33K | Jun 10, 2025 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | These restricted stock units shall vest on the earlier of June 10, 2026 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service. |
| F2 | This amount reflects the 1:25 reverse stock split effected by the Issuer on June 20, 2024. |