EXHIBIT A

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13G/A with respect to the Common Stock of Atara Biotherapeutics, Inc. dated as of February 14, 2023, is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.

 

MAVERICK CAPITAL, LTD.
By: Maverick Capital Management, LLC, its General Partner
By:   Lee S. Ainslie III, Manager
By:  

/s/ Mark Gurevich

  Mark Gurevich
  Under Power of Attorney dated March 15, 2018
MAVERICK CAPITAL MANAGEMENT, LLC
By:   Lee S. Ainslie III, Manager
By:  

/s/ Mark Gurevich

  Mark Gurevich
  Under Power of Attorney dated March 15, 2018
LEE S. AINSLIE III
By:  

/s/ Mark Gurevich

  Mark Gurevich
  Under Power of Attorney dated March 15, 2018