Bronstein, Gewirtz & Grossman LLC Urges Atara Biotherapeutics, Inc. Investors to Act: Class Action Filed Alleging Investor Harm

NEW YORK, March 26, 2026 (GLOBE NEWSWIRE) -- Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against Atara Biotherapeutics, Inc. (NASDAQ: ATRA) and certain of its officers. This lawsuit seeks to recover damages against Defendants for alleged violations of the federal securities laws on behalf of all persons and entities that purchased or otherwise acquired Atara securities between May 20, 2024 and January 9, 2026, bot ...