NASDAQ · ATRAHealthcareBiotechnology

Atara Biotherapeutics news

$8.05−3.82%
Close Sep 29, 2026 · split-adjusted
Articles · 30 days0English, de-duplicated
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About Atara Biotherapeutics

Deadline Alert: Atara Biotherapeutics, Inc. (ATRA) Shareholders Who Lost Money Urged To Contact Glancy Prongay Wolke & Rotter LLP About Securities Fraud Lawsuit
GlobeNewswire Inc.May 12, 2:00 PM ET▼ Negative

The company faces significant regulatory setbacks with two FDA rejections of its lead drug candidate, manufacturing compliance issues, and substantial stock price declines (40.5% and 57%). Additionally, a securities fraud lawsuit alleges the company made materially false statements about the drug's regulatory prospects and manufacturing capabilities, indicating serious operational and legal challenges.

Bragar Eagel & Squire, P.C. Reminds Atara Biotherapeutics, Inc. Investors They Have Until May 22nd to Seek Lead Plaintiff Role in Class Action Lawsuit
GlobeNewswire Inc.May 5, 6:23 PM ET▼ Negative

The company is accused of making false and misleading statements about its drug candidate tabelecleucel's regulatory prospects, manufacturing issues, and clinical trial viability. These allegations suggest material misrepresentations that negatively impacted investor value and regulatory approval chances.

ROSEN, LEADING INVESTOR COUNSEL, Encourages Atara Biotherapeutics, Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action - ATRA
GlobeNewswire Inc.May 2, 3:30 PM ET▼ Negative

The company is the subject of a securities class action lawsuit alleging material misstatements regarding manufacturing deficiencies, regulatory obstacles to FDA approval of its lead drug candidate, and overstated regulatory prospects. These allegations suggest significant operational and regulatory challenges that negatively impacted investor value.

Pomerantz Law Firm Announces the Filing of a Class Action Against Atara Biotherapeutics, Inc. and Certain Officers – ATRA
GlobeNewswire Inc.Apr 28, 3:46 PM ET▼ Negative

The company is the subject of a securities fraud class action lawsuit alleging material misstatements about its lead drug candidate's regulatory prospects. Multiple FDA rejections and manufacturing deficiencies were concealed from investors, resulting in cumulative stock price declines exceeding 100% across three disclosure events.

ROSEN, TOP-RANKED INVESTOR COUNSEL, Encourages Atara Biotherapeutics, Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action - ATRA
GlobeNewswire Inc.Apr 3, 9:27 PM ET▼ Negative

The company is the subject of a securities class action lawsuit alleging false and misleading statements regarding manufacturing deficiencies, regulatory prospects for its lead drug candidate, and undisclosed risks that negatively impacted business and financial condition. Investors suffered damages when the true details entered the market.

Did You Lose Money Investing in Atara Biotherapeutics, Inc.? Robbins LLP Encourages Investors with Significant Losses to Contact the Firm About Their Rights Against ATRA
GlobeNewswire Inc.Mar 31, 8:51 PM ET▼ Negative

The company is the subject of a class action lawsuit alleging material misrepresentation regarding its lead drug candidate's regulatory prospects. The FDA's rejection of the drug application resulted in a 56.99% stock price decline, indicating significant investor losses and loss of confidence in the company's business prospects.

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Articles and sentiment ratings from Massive / Polygon. Sentiment is the provider's model rating for this company, not Gainbot's view.

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology