X0306 4 2022-01-31 0 0000861878 STERICYCLE INC SRCL 0001463574 Hooley Stephen C 2355 WAUKEGAN ROAD BANNOCKBURN IL 60015 1 0 0 0 Restricted Stock Units 0.0 2022-01-31 4 A 0 340 0.0 A Common Stock 340 10536 D In accordance with the Stericycle, Inc. Directors Deferred Stock Plan, the reporting person has elected to defer actual receipt of the shares to which such person would otherwise be entitled upon vesting until such person's separation of service from the issuer. /s/ Stephen C. Hooley 2022-02-01