X0306 4 2022-01-31 0 0001435049 CHINOOK THERAPEUTICS, INC. KDNY 0001823187 King Andrew James C/O CHINOOK THERAPEUTICS, INC. 400 FAIRVIEW AVE. NO., 9TH FLOOR SEATTLE WA 98102 0 1 0 0 Chief Scientific Officer Stock Option (right to buy) 12.90 2022-01-31 4 A 0 100000 0.00 A 2032-01-30 Common Stock 100000 100000 D Restricted Stock (RSU)(Common Stock) 2022-01-31 4 A 0 25000 0.00 A 2025-01-31 Common Stock 25000 25000 D The stock option vests as to 25% of the total shares on January 31, 2023, and thereafter vests as to 1/48 of the total shares monthly until fully vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date. Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement. The RSUs vests as to one-third (1/3) of the total restricted stock units in equal annual installments beginning on January 31, 2023, 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 2022-02-02