X0306 4 2021-10-06 0 0001435049 CHINOOK THERAPEUTICS, INC. KDNY 0001202785 DOBMEIER ERIC C/O CHINOOK THERAPEUTICS, INC. 1600 FAIRVIEW AVE. E. SEATTLE WA 98102 1 1 0 0 President, CEO Common Stock 2021-10-06 4 M 0 30796 A 140633 D Restricted Stock Units (RSU) 2021-10-06 4 M 0 30796 0.00 D 2030-10-05 Common Stock 30796 61593 D Restricted stock units convert into common stock on a one-for-one basis. Each restricted stock unit represents a contingent right to receive one share of Issuer's common stock. The RSUs vests as to one-third (1/3) of the total restricted stock units in equal annual installments beginning on October 6, 2021, until fully vested subject to the reporting person's provision of service to the Issuer on each vesting date. /s/ Kirk Schumacher, Attorney-in-Fact 2021-10-08