X0306 4 2018-05-21 0 0001340652 ChemoCentryx, Inc. CCXI 0001423084 Schall Thomas J. C/O CHEMOCENTRYX, INC. 850 MAUDE AVENUE MOUNTAIN VIEW CA 94043 1 1 0 0 President and CEO Common Stock 2018-05-21 4 M 0 33938 6.00 A 2218932 D Common Stock 2018-05-21 4 S 0 16140 13.004 D 2202792 D Common Stock 2018-05-21 4 S 0 17798 12.1439 D 2184994 D Common Stock 2018-05-22 4 M 0 30932 6.00 A 2215926 D Common Stock 2018-05-22 4 S 0 30932 13.0011 D 2184994 D Common Stock 2018-05-23 4 M 0 27928 6.00 A 2212922 D Common Stock 2018-05-23 4 S 0 27928 13.0082 D 2184994 D Stock Option (Right to buy) 6.00 2018-05-21 4 M 0 16140 D 2009-07-29 2019-07-29 Common Stock 16140 293860 D Stock Option (Right to buy) 6.00 2018-05-21 4 M 0 17798 D 2009-09-10 2019-09-10 Common Stock 17798 182202 D Stock Option (Right to buy) 6.00 2018-05-22 4 M 0 30932 D 2009-07-29 2019-07-29 Common Stock 30932 262928 D Stock Option (Right to Buy) 6.00 2018-05-23 4 M 0 27928 D 2009-07-29 2019-07-29 Common Stock 27928 235000 D Shares sold are associated with stock options that will expire in 2019. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. Reflects the weighted average sale price of the shares sold. The shares were sold in multiple trades at prices ranging from $13.01 to $13.02 per share. The Reporting Person will provide to the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. Reflects the weighted average sale price of the shares sold. The shares were sold in multiple trades at prices ranging from $12.00 to $12.65 per share. The Reporting Person will provide to the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. Reflects the weighted average sale price of the shares sold. The shares were sold in multiple trades at prices ranging from $13.00 to $13.01 per share. The Reporting Person will provide to the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. Reflects the weighted average sale price of the shares sold. The shares were sold in multiple trades at prices ranging from $13.00 to $13.09 per share. The Reporting Person will provide to the SEC staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price. As of May 21, 2018, and prior to this transaction, the exercised options were fully vested. Not applicable. As of May 22, 2018, and prior to this transaction, the exercised options were fully vested. As of May 23, 2018, and prior to this transaction, the exercised options were fully vested. /s/ Susan M. Kanaya, as Attorney-in-fact 2018-05-23