X0306 4 2021-05-02 0 0000861878 STERICYCLE INC SRCL 0001754743 Miller Cindy J 2355 WAUKEGAN ROAD BANNOCKBURN IL 60015 1 1 0 0 Chief Executive Officer Common Stock 2021-05-02 4 M 0 1358 A 20786 D Common Stock 2021-05-02 4 F 0 630 76.28 D 20156 D Common Stock 2021-05-02 4 M 0 1358 A 21514 D Common Stock 2021-05-02 4 F 0 630 76.28 D 20884 D Performance-based Restricted Stock Units 0.0 2021-05-02 4 M 0 1358 D Common Stock 1358 93476 D Restricted Stock Units 0.0 2021-05-02 4 M 0 1358 D Common Stock 1358 64178 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. 630 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of RSUs. The vesting of these performance-based restricted stock units ("PRSU") is dependent upon the achievement by Stericycle,Inc. of certain financial performance criteria. Subject to continued employment through the applicable vesting date and to accelerated vesting in certain circumstances, one-third (1/3) of the target number of PRSUs is scheduled to vest annually on each anniversary of the grant date following each of the 2019, 2020 and 2021 annual performance periods. Each year, the number of units that actually vest will be 0% to 100% of the scheduled amount, depending on the extent to which Stericycle, Inc. meets certain financial performance goals. No shares were sold. 630 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of PSUs. This award was granted on May 2, 2019 for 4,075 shares. 1,358 shares vested on May 2, 2021. All unvested PSUs are subject to continued employment through the applicable vesting date. This award was granted on May 2, 2019 for 4,075 shares. 1,358 shares vested on May 2, 2021 and the remaining unvested RSUs will vest on the next anniversary of the grant date. All unvested RSUs are subject to continued employment through the applicable vesting date. /s/ Cindy J. Miller 2021-05-03