Atara Biotherapeutics, Inc. develops therapies for patients with solid tumors, hematologic cancers, and autoimmune diseases in the United States. Its lead product includes Tab-cel (tabelecleucel), a T-cell immunotherapy program that is in Phase 3 clinical trials for the treatment of epstein-barr virus (EBV) driven post-transplant lymphoproliferative disease, as well as nasopharyngeal carcinoma. Its CAR T immunotherapy pipeline products include ATA2271 and ATA3271 to treat mesothelin; and ATA3219 for the treatment of B-cell malignancies, as well as ATA188 that is in Phase 2 clinical trials to treat multiple sclerosis.

Atara Biotherapeutics, Inc. has a license agreement with Memorial Sloan Kettering Cancer Center; license, and research and development collaboration agreement with QIMR Berghofer Medical Research Institute; and strategic collaboration with H. Lee Moffitt Cancer Center. The company was incorporated in 2012 and is headquartered in Thousand Oaks, California.