Atara Biotherapeutics, Inc. (ATRA) — Insider Trading Activity

Atara Biotherapeutics, Inc. (ATRA) has 53 insider transactions on record, including 5 open-market purchases and 28 sales by company executives and directors. The most recent transaction was filed on 2026-05-07 by Panacea Innovation LTD. The largest single transaction was a purchase of $ 4.74M by Ecor1 Capital, LLC.