 SOUTH SAN FRANCISCO, Calif.--BUSINESS WIRE--Atara Biotherapeutics, Inc. Nasdaq: ATRA, a pioneer in T-cell immunotherapy, leveraging its novel allogeneic EBV T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today reported the grant of an aggregate of 104,386 restricted stock units of Ataras common stock to 16 newly hired employees and stock options to purchase an aggregate of 107,813 shares of Ataras common stock to five such newly hired 