Market Movers (8-K)
See all →NASDAQ
Atara Biotherapeutics announced second quarter 2026 financial results and operational progress, including a productive FDA meeting for tabelecleucel and significant cost reductions.
Worse than expected
NASDAQ
Atara Biotherapeutics has appointed Kevin G. Sarney as interim CFO following the departure of Chief Accounting Officer Yanina Grant-Huerta.
NASDAQ
Atara Biotherapeutics appoints Brian Cherry to its Board of Directors and confirms shareholder approval of all 2026 annual meeting proposals.
NASDAQ
Atara Biotherapeutics reported Q1 2026 financial results, with a focus on operational progress and a potential path forward for tabelecleucel BLA resubmission with the FDA.
Capital raise
NASDAQ
Atara Biotherapeutics provides an update on the regulatory path for tabelecleucel following a Type A meeting with the FDA, indicating a potential pathway for resubmission.
NASDAQ
Atara Biotherapeutics has been notified by Nasdaq that it fails to meet the minimum $50 million market value requirement for continued listing.
Worse than expected
Quarterly Earnings (10-Q)
See all →NASDAQ
Atara Biotherapeutics achieved a net income of $36.1 million for the first nine months of 2025, driven by significant cost reductions and strategic realignments, despite ongoing liquidity concerns.
Better than expected
Capital raise
Delay expected
NASDAQ
Atara Biotherapeutics reported a net income for the first half of 2025, driven by strategic asset transfers and significant workforce reductions, while facing ongoing liquidity challenges.
Delay expected
Worse than expected
Capital raise
NASDAQ
Atara Biotherapeutics reports a net income of $38.0 million for Q1 2025, driven by commercialization revenue, and completes the transfer of manufacturing responsibilities to Pierre Fabre.
Better than expected
Capital raise
Delay expected
NASDAQ
Atara Biotherapeutics reports third quarter 2024 results, highlighting commercialization revenue growth and progress in its clinical programs, including the acceptance of the tab-cel BLA by the FDA.
Worse than expected
Capital raise
NASDAQ
10-Q: Atara Biotherapeutics Reports Second Quarter 2024 Financial Results and Provides Business Update
Atara Biotherapeutics' second quarter 2024 report highlights commercialization revenue growth and progress in clinical development, while also noting ongoing financial challenges.
Worse than expected
Capital raise
NASDAQ
Atara Biotherapeutics reports a net loss of $31.8 million for the first quarter of 2024, while progressing its T-cell immunotherapy programs and manufacturing capabilities.
Worse than expected
Capital raise
Annual Reports (10-K)
NASDAQ
10-K: Atara Biotherapeutics Navigates Manufacturing Hurdles, Pauses CAR-T Programs in Strategic Shift
Atara Biotherapeutics pauses CAR-T programs, focuses on tab-cel amid manufacturing challenges and strategic review.
Delay expected
Capital raise
Worse than expected
NASDAQ
Atara Biotherapeutics has amended its commercialization agreement with Pierre Fabre, expanding its reach to all global markets and securing a $20 million upfront payment, while also navigating financial challenges with workforce reductions.
Capital raise
Worse than expected
Insider Trading (Form 4)
See all →NASDAQ
Redmile Group, LLC and 1 other reported changes in beneficial ownership of Atara Biotherapeutics, Inc. common stock on July 22, 2026.
NASDAQ
Atara Biotherapeutics director Brian Cherry was granted 24,000 restricted stock units as part of his compensation package.
NASDAQ
Director William K. Heiden received a grant of 12,000 restricted stock units from Atara Biotherapeutics.
NASDAQ
Director Matthew K. Fust was granted 12,000 restricted stock units in Atara Biotherapeutics, Inc.
NASDAQ
Director Gregory A. Ciongoli was granted 12,000 restricted stock units by Atara Biotherapeutics, Inc.
NASDAQ
Atara Biotherapeutics CEO AnhCo Nguyen sold 5,241 shares of common stock to satisfy tax withholding obligations related to RSU vesting.
Proxy Statements (Def-14A)
See all →NASDAQ
Atara Biotherapeutics announces its 2026 Annual Meeting of Stockholders to be held virtually on June 9, 2026.
NASDAQ
DEFA14A: Atara Biotherapeutics Sets Date for 2025 Annual Meeting, Outlines Proposals for Stockholder Vote
Atara Biotherapeutics announces its 2025 Annual Meeting of Stockholders to be held virtually on June 10, 2025, with key proposals including the election of directors, executive compensation, and ratification of the company's independent auditor.
NASDAQ
Atara Biotherapeutics schedules its 2025 Annual Meeting of Stockholders for June 10, 2025, to address director elections, executive compensation, and auditor ratification.
NASDAQ
Atara Biotherapeutics issues a supplement to its proxy statement to clarify voting standards, the treatment of broker non-votes, and correct a scrivener's error for the upcoming 2024 Annual Meeting of Stockholders.
NASDAQ
Atara Biotherapeutics is holding its annual meeting on June 10, 2024, seeking stockholder approval on several key proposals, including director elections, executive compensation, and a potential reverse stock split.
NASDAQ
DEF 14A: Atara Biotherapeutics Seeks Stockholder Approval for Reverse Stock Split and Equity Incentive Plan
Atara Biotherapeutics is asking stockholders to approve a reverse stock split, elect directors, approve executive compensation, ratify the selection of its auditor, and approve its equity incentive plan at the upcoming annual meeting.
Worse than expected
Schedule 13D - Activist Investments
See all →NASDAQ
Redmile Group, LLC and its affiliates have updated their Schedule 13D filing to reflect changes in beneficial ownership of Atara Biotherapeutics, Inc. following the exercise of pre-funded warrants.
NASDAQ
Redmile Group reports a change in beneficial ownership percentage of Atara Biotherapeutics due to shifts in the issuer's outstanding share count.
NASDAQ
Panacea Venture Healthcare Fund II, L.P. sold 313,446 shares of Atara Biotherapeutics common stock on May 7, 2026.
NASDAQ
Panacea Venture entities, including James Huang, have updated their beneficial ownership in Atara Biotherapeutics, Inc., reporting a sale of shares and warrant exercises.
Worse than expected
NASDAQ
SCHEDULE 13D/A: Redmile Group Amends Atara Biotherapeutics Stake
Redmile Group, LLC and its affiliates filed an amended Schedule 13D for Atara Biotherapeutics, Inc., updating beneficial ownership to 9.9% and adding Redmile Strategic Long Only Trading Sub, Ltd. as a reporting person.
NASDAQ
Panacea Venture and its affiliates have increased their beneficial ownership in Atara Biotherapeutics, Inc. to 20.0% through recent open market purchases and warrant holdings.
Schedule 13G - Passive Investments
NASDAQ
Adage Capital Management, L.P. and its principals have reported beneficial ownership of 8.56% of Atara Biotherapeutics, Inc. common stock as of March 31, 2026.
NASDAQ
EcoR1 Capital, LLC and Oleg Nodelman have filed a Schedule 13G reporting a 17.4% beneficial ownership stake in Atara Biotherapeutics, Inc.
NASDAQ
EcoR1 Capital, LLC and its affiliates have disclosed a significant beneficial ownership stake of 9.9% in Atara Biotherapeutics, Inc. common stock.
NASDAQ
SCHEDULE 13G/A: Redmile Group and Affiliates Disclose Significant 9.9% Stake in Atara Biotherapeutics, Inc.
Investment firm Redmile Group, along with its principal Jeremy C. Green and affiliated funds, has disclosed a combined beneficial ownership of 9.9% in Atara Biotherapeutics, Inc., including shares held directly and those issuable from pre-funded warrants.
NASDAQ
Panacea Venture Healthcare Fund II, L.P. and its affiliated entities have disclosed a 9.5% passive beneficial ownership stake in Atara Biotherapeutics, Inc., holding 550,000 shares of common stock.