ATRA 8-K
Atara Biotherapeutics, Inc. (ATRA)
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Securities registered pursuant to Section 12(b) of the Act:
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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
(b) Following an assessment by the Board of Directors (the “Board”) of Atara Biotherapeutics, Inc., a Delaware corporation (the “Company”), of its size and composition, the Board determined that a reduction in the number of directors would help right-size the Board to reflect the Company's current operations and further align the size of the Company’s Board with the boards of public companies of similar size. As a result of such determination, on September 2, 2025, each of Ameet Mallik, Pascal Touchon, and Maria Grazia Roncarolo, M.D., notified the Board that they will each voluntarily resign from the Board effective as of September 2, 2025 (the “Resignation Effective Date”). In connection with such resignations, the Board reduced its size from ten (10) to seven (7) directors, as of the Resignation Effective Date.
In connection with the resignation of Pascal Touchon, who served as Chair of the Board, the Board appointed Gregory A. Ciongoli to serve as Chair of the Board.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
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ATARA BIOTHERAPEUTICS, INC. |
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Date: |
September 3, 2025 |
By: |
/s/ Yanina Grant-Huerta |
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Yanina Grant-Huerta |