(NASDAQ:ATRA) THOUSAND OAKS, Calif--(BUSINESS WIRE)--Atara Biotherapeutics, Inc. (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that Greg Ciongoli will assume the role of Chair of the Board of Directors. Greg Ciongoli is the founder and managing partner of Adiumentum Capital Management. He has served as a Director at Atara since 2024