Form4insider filings, from the source

SEC Form 4 · accession 0000905148-26-004085

Atara Biotherapeutics, Inc. · ATRA

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner
Period of report
Sep 4, 2026
Accepted (ET)
Sep 4, 2026 · 6:20 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001604464

Table I — non-derivative securities

SecurityDateCodeSharesPriceA/DOwned afterD/INature of ownership
Common StockF1Sep 4, 2026P104,166$9.60A166,486D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

Remarks

Exhibit List: Exhibit 24 - Power of Attorney