X0306 4 2022-03-11 0 0000861878 STERICYCLE INC SRCL 0001754743 Miller Cindy J 2355 WAUKEGAN ROAD BANNOCKBURN IL 60015 1 1 0 0 Chief Executive Officer Common Stock 2022-03-11 4 M 0 10182 A 38798 D Common Stock 2022-03-11 4 F 0 3999 55.44 D 34799 D Common Stock 2022-03-12 4 M 0 2401 A 37200 D Common Stock 2022-03-12 4 F 0 1113 55.44 D 36087 D Common Stock 2022-03-12 4 M 0 9261 A 45348 D Common Stock 2022-03-12 4 F 0 4293 55.44 D 41055 D Performance-based Restricted Stock Units 0.0 2022-03-12 4 M 0 9261 D Common Stock 9261 84215 D Restricted Stock Units 0.0 2022-03-11 4 M 0 10182 D Common Stock 10182 42246 D Restricted Stock Units 0.0 2022-03-12 4 M 0 2401 D Common Stock 2401 39845 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. 3,999 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of RSUs. No shares were sold. 1,113 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 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. 4,293 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of PSUs. This award was granted on March 12, 2019 for 27,783 shares. The final 9,261 shares vested on March 12, 2022. This award was granted on March 11, 2020 for 30,546 shares. 10,182 shares vested on March 11, 2022 and the remaining unvested RSUs are scheduled to vest on the next anniversary of the grant date. This award was granted on March 12, 2019 for 12,005 shares. 2,401 shares vested on March 12, 2022 and the remaining unvested RSUs are scheduled to vest in equal annual installments on the next 2 anniversaries of the grant date. /s/ Cindy J. Miller 2022-03-14