George Bickerstaff, Director at CareDx, holds 99.72K shares in CareDx (Ticker: CDNA), holds 137.21K shares in Innoviva (Ticker: INVA), holds 50.00K shares in Sio Gene Therapies (Ticker: SIOX). Most recently, George Bickerstaff Bought ― shares of CareDx on Aug 11, 2023 for an estimated value of 99.06K.