X0306 4 2019-08-16 0 0001466301 Clovis Oncology, Inc. CLVS 0001266569 MAHAFFY PATRICK J C/O CLOVIS ONCOLOGY, INC. 5500 FLATIRON PARKWAY, SUITE 100 BOULDER CO 80301 1 1 0 0 President and CEO Common Stock 2019-08-16 4 P 0 400 5.56 A 919187 D Common Stock 2019-08-16 4 P 0 400 5.58 A 919587 D Common Stock 2019-08-16 4 P 0 3706 5.57 A 923293 D Common Stock 2019-08-16 4 P 0 2100 5.61 A 925393 D Common Stock 2019-08-16 4 P 0 6400 5.61 A 931793 D Common Stock 2019-08-16 4 P 0 11314 5.58 A 943107 D Common Stock 2019-08-16 4 P 0 3700 5.59 A 946807 D Common Stock 2019-08-16 4 P 0 11053 5.59 A 957860 D Common Stock 2019-08-16 4 P 0 5100 5.60 A 962960 D Common Stock 2019-08-16 4 P 0 5827 5.60 A 968787 D Common Stock 1000 I By son Common Stock 1000 I By daughter The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. /s/ Patrick Mahaffy 2019-08-16