Atara Biotherapeutics, Inc. (NASDAQ:ATRA – Get Free Report) EVP Anhco Nguyen sold 42,899 shares of the company’s stock in a transaction on Thursday, May 16th. The shares were sold at an average price of $0.62, for a total transaction of $26,597.38. Following the sale, the executive vice president now owns 898,498 shares of the company’s […]