X0306 4 2022-03-09 0 0000861878 STERICYCLE INC SRCL 0001754743 Miller Cindy J 2355 WAUKEGAN ROAD BANNOCKBURN IL 60015 1 1 0 0 Chief Executive Officer Common Stock 2022-03-09 4 M 0 9518 A 31599 D Common Stock 2022-03-09 4 F 0 2983 56.69 D 28616 D Restricted Stock Units 0.0 2022-03-09 4 M 0 9518 D Common Stock 9518 52428 D Each restricted stock unit (RSU) represents the right to receive, at settlement, one share of common stock. This transaction represents the settlement of RSUs in shares of common stock on their scheduled vesting date. No shares were sold. 2,983 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of RSUs. This award was granted on March 9, 2021 for 28,556 shares. 9,518 shares vested on March 9, 2022 and the remaining unvested RSUs will continue to vest in equal annual installments on the next 2 anniversaries of the grant date. /s/ Cindy J. Miller 2022-03-11