SEC Form 4 · accession 0000905148-26-002921
Atara Biotherapeutics, Inc. · ATRA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
William K Heiden
Director
Period of report
Jun 9, 2026
Accepted (ET)
Jun 11, 2026 · 4:37 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001604464
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Jun 9, 2026 | A | 12,000 | $0.00 | A | 34,188 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1These restricted stock units shall vest on the earlier of June 9, 2027 or the date of the next annual meeting of stockholders, subject to the Reporting Person's continuous service.