X0306 4 2019-05-29 0 0001466301 Clovis Oncology, Inc. CLVS 0001283569 MUEHL DANIEL W C/O CLOVIS ONCOLOGY, INC. 5500 FLATIRON PARKWAY, SUITE 100 BOULDER CO 80301 0 1 0 0 See Remarks Common Stock 2019-05-29 4 M 0 547 A 7914 D Common Stock 2019-05-29 4 S 0 271 14.88 D 7643 D Restricted Stock Units 2019-05-29 4 M 0 547 0.00 D Common Stock 547 2734 D Each Restricted Stock Unit represents the right to receive one share of Common Stock. Represents the shares automatically sold by the reporting person pursuant to an election to satisfy tax withholding obligations in connection with the vesting of the Restricted Stock Units listed in Table II. This sale does not represent a discretionary trade by the reporting person. This transaction was executed in multiple trades at prices ranging from $14.87 to $15.04. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. On August 25, 2016, the reporting person was granted 8,750 Restricted Stock Units. 25% of such Restricted Stock Units vested on August 25, 2017, and the remainder vests in substantially equal installments over the 12 quarters immediately following such date. Executive Vice President and Chief Financial Officer /s/ Daniel W. Muehl 2019-05-31