X0306 4 2014-12-16 0 0001036968 diaDexus, Inc. DDXS 0001619607 Fang Kenneth C. C/O DIADEXUS, INC. 349 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080 0 1 0 0 Chief Medical Officer Stock Option (Right to Buy) 0.41 2014-12-16 4 A 0 750000 0.00 A 2024-12-16 Common Stock 750000 750000 D 25% of the shares subject to this option vest and become exercisable on October 1, 2015. The remaining shares subject to this option vest and become exercisable in 36 equal monthly installments thereafter, so that the entire number of shares subject to this option become fully vested and exercisable on October 1, 2018. /s/ Adam M. Braun, attorney-in-fact 2014-12-18