New York, New York--(Newsfile Corp. - March 30, 2026) - WHY: Rosen Law Firm, a global investor rights law firm, announces a class action lawsuit on behalf of purchasers of securities of Atara Biotherapeutics, Inc. (NASDAQ: ATRA) between May 20, 2024 and January 9, 2026, inclusive (the "Class Period"). A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than May 22, 2026.SO WHAT: If you purchased Atara securities during the Class Period you ...

New York, New York--(Newsfile Corp. - March 27, 2026) - WHY: Rosen Law Firm, a global investor rights law firm, announces a class action lawsuit on behalf of purchasers of securities of Atara Biotherapeutics, Inc. (NASDAQ: ATRA) between May 20, 2024 and January 9, 2026, inclusive (the "Class Period"). A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than May 22, 2026.SO WHAT: If you purchased Atara securities during the Class Period you ...

Bragar Eagel & Squire, P.C. Litigation Partner Brandon Walker Encourages Investors Who Suffered Losses In Atara (ATRA) To Contact Him Directly To Discuss Their Options If you purchased or acquired Atara securities between May 20, 2024 and January 9, 2026 and would like to discuss your legal rights, call Bragar Eagel & Squire partner Brandon Walker or Melissa Fortunato directly at (212) 355-4648. Click here to participate in the action. NEW YORK, March 27, 2026 (GLOBE NEWSWIRE) -- What’s Happening: Bragar E ...

NEW YORK, March 27, 2026 (GLOBE NEWSWIRE) -- The Gross Law Firm issues the following notice to shareholders of Atara Biotherapeutics, Inc. (NASDAQ: ATRA). Shareholders who purchased shares of ATRA during the class period listed are encouraged to contact the firm regarding possible lead plaintiff appointment. Appointment as lead plaintiff is not required to partake in any recovery. CONTACT US HERE: https://securitiesclasslaw.com/securities/atara-biotherapeutics-inc-loss-submission-form/?id=184853&from=3 CLAS ...

SAN DIEGO, March 26, 2026 (GLOBE NEWSWIRE) -- Robbins LLP reminds stockholders that a class action was filed on behalf of all investors who purchased or otherwise acquired Atara Biotherapeutics, Inc. (NASDAQ: ATRA) securities between May 20, 2024 and January 9, 2026. Atara develops therapies for patients with solid tumors, hematologic cancers, and autoimmune diseases in the U.S. and the United Kingdom (“U.K.”). The Company’s lead product candidate is tabelecleucel (also referred to as tab-cel or EBVALLO), ...

New York, New York--(Newsfile Corp. - March 26, 2026) - WHY: Rosen Law Firm, a global investor rights law firm, announces a class action lawsuit on behalf of purchasers of securities of Atara Biotherapeutics, Inc. (NASDAQ: ATRA) between May 20, 2024 and January 9, 2026, inclusive (the "Class Period"). A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than May 22, 2026.SO WHAT: If you purchased Atara securities during the Class Period you ...

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 ...

ATRA Investors Have Opportunity to Lead Atara Biotherapeutics, Inc. Securities Fraud Lawsuit with the Schall Law Firm Mar 25, 2026 10:01 PM Eastern Daylight Time ATRA Investors Have Opportunity to Lead Atara Biotherapeutics, Inc. Securities Fraud Lawsuit with the Schall Law Firm Share If you are a shareholder who suffered a loss, click here to participate. The Schall Law Firm represents investors around the world and specializes in securities class action lawsuits and shareholder rights litigation. We also ...

NEW YORK, March 25, 2026 (GLOBE NEWSWIRE) -- WHY: Rosen Law Firm, a global investor rights law firm, announces a class action lawsuit on behalf of purchasers of securities of Atara Biotherapeutics, Inc. (NASDAQ: ATRA) between May 20, 2024 and January 9, 2026, inclusive (the “Class Period”). A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than May 22, 2026. SO WHAT: If you purchased Atara securities during the Class Period you may be en ...

New York, New York--(Newsfile Corp. - March 25, 2026) - WHY: Rosen Law Firm, a global investor rights law firm, announces a class action lawsuit on behalf of purchasers of securities of Atara Biotherapeutics, Inc. (NASDAQ: ATRA) between May 20, 2024 and January 9, 2026, inclusive (the "Class Period"). A class action lawsuit has already been filed. If you wish to serve as lead plaintiff, you must move the Court no later than May 22, 2026.SO WHAT: If you purchased Atara securities during the Class Period you ...