Atara Biotherapeutics (NASDAQ:ATRA) reported quarterly losses of $(2.93) per share which missed the analyst consensus estimate of $(2.50) by 17.2 percent. The company reported quarterly sales of $40.190 million which beat the analyst consensus estimate of $35.168 million by 14.28 percent. This is a 1.78K percent increase over sales of $2.138 million the same period last year.