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Atara Biotherapeutics, Inc. SEC Filings

ATRA NASDAQ

Welcome to our dedicated page for Atara Biotherapeutics SEC filings (Ticker: ATRA), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.

Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on Atara Biotherapeutics's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.

Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time EDGAR feed updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into Atara Biotherapeutics's regulatory disclosures and financial reporting.

Rhea-AI Summary

Atara Biotherapeutics (ATRA) reported a pronounced change in its mid‑2025 financial position driven by transactions with Pierre Fabre and cost reductions. Total assets declined to $36.9 million at June 30, 2025 from $109.1 million at year‑end, and cash and cash equivalents were $16.9 million. Total liabilities fell to $71.9 million, and stockholders’ deficit improved to $(35.0) million.

Commercialization revenue for the six months ended June 30, 2025 was $115.7 million, reflecting recognition of deferred revenue tied to the transfer of manufacturing, inventory and related services to Pierre Fabre; deferred revenue declined from $95.1 million at year‑end to $1.6 million at June 30. Net income for the six months was $40.4 million versus a loss of $50.8 million a year earlier, producing basic earnings per share of $3.52 for the period. The company recorded restructuring charges of $11.3 million and a lease right‑of‑use impairment of $4.1 million. Management discloses substantial doubt about the company’s ability to continue as a going concern and plans to seek additional capital.

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Rhea-AI Summary

Atara Biotherapeutics reported that it announced financial results for the second quarter ended June 30, 2025 and furnished a press release as Exhibit 99.1 to its Form 8-K. The filing specifies the press release is being furnished (not "filed") and therefore is not subject to the liabilities of Sections 11 and 12(a)(2) of the Securities Act or deemed "filed" under Section 18 of the Exchange Act, and will not be incorporated by reference into other SEC filings unless expressly referenced. The Form lists the company ticker as ATRA and is signed by the Chief Accounting Officer.

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FAQ

How many Atara Biotherapeutics (ATRA) SEC filings are available on StockTitan?

StockTitan tracks 64 SEC filings for Atara Biotherapeutics (ATRA), including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, and Form 4 insider trading disclosures. Each filing includes AI-generated summaries, impact scoring, and sentiment analysis.

When was the most recent SEC filing for Atara Biotherapeutics (ATRA)?

The most recent SEC filing for Atara Biotherapeutics (ATRA) was filed on August 11, 2025.