X0306 4 2019-01-01 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 2019-01-01 4 M 0 33334 0.00 A 2218328 D Common Stock 2019-01-01 4 M 0 33333 0.00 A 2251661 D Common Stock 2019-01-01 4 M 0 30000 0.00 A 2281661 D Common Stock 2019-01-01 4 F 0 52806 10.91 D 2228855 D Restricted Stock Units 2019-01-01 4 M 0 33334 D Common Stock 33334 0 D Restricted Stock Units 2019-01-01 4 M 0 33333 D Common Stock 33333 33334 D Restricted Stock Units 2019-01-01 4 M 0 30000 D Common Stock 30000 60000 D Shares were acquired upon vesting of restricted stock units awarded on March 7, 2016. Shares were acquired upon vesting of restricted stock units awarded on February 28, 2017. Shares were acquired upon vesting of restricted stock units awarded on March 5, 2018. Represents shares withheld upon vesting of restricted stock units to satisfy tax withholding obligation. Each restricted stock unit represents a contingent right to receive one share of CCXI common stock. The restricted stock units awarded on March 7, 2016, vest in three equal installments on January 1, 2017, January 1, 2018, and January 1, 2019, subject to the Reporting Person's continued service to the Company on such date. Shares will be delivered to the Reporting Person within thirty (30) days following the vesting date. The restricted stock units awarded on February 28, 2017, vest in three equal installments on January 1, 2018, January 1, 2019, and January 1, 2020, subject to the Reporting Person's continued service to the Company on such date. Shares will be delivered to the Reporting Person within thirty (30) days following the vesting date. The restricted stock units awarded on March 5, 2018, vest in three equal installments on January 1, 2019, January 1, 2020, and January 1, 2021, subject to the Reporting Person's continued service to the Company on such date. Shares will be delivered to the Reporting Person within thirty (30) days following the vesting date. /s/ Susan M. Kanaya, as Attorney-in-Fact 2019-01-03