X0306 4 2020-02-13 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 Stock Option (right to buy) 9.71 2020-02-13 4 A 0 50000 0.00 A 2030-02-13 Common Stock 50000 50000 D The option shall vest in the event the Company's Product Revenues for the Company's fiscal year ending December 31, 2020 meet or exceed its corresponding budgeted amount in the Company's budget as approved by the Board of Directors on February 13, 2020. /s/ Patrick J. Mahaffy 2020-02-18