X0306 4 2022-03-03 0 0001441236 Clearwater Paper Corp CLW 0001625459 Murphy Michael John 601 W. RIVERSIDE AVE. STE.1100 SPOKANE WA 99201 0 1 0 0 Sr. VP, CFO Common Stock 2022-03-03 4 A 0 6470 0.00 A 36657 D Common Stock 2022-03-04 4 F 0 471 29.14 D 36186 D Represents award of restricted stock units ("RSUs"). RSUs may be settled only for shares of common stock on a one-for-one basis. Represents award of RSUs that will vest 33%, 33%, 34% on March 15, 2023, 2024 and 2025, respectively, assuming continued employment. During the vesting period, an amount equal to the dividends that would have been paid on the RSUs had they been in the form of common stock will be converted into additional RSUs. Represents shares withheld by Clearwater Paper Corporation to satisfy tax withholding requirements due at settlement of restricted stock units that vested March 4, 2022. /s/Michael S. Gadd, Attorney-in-fact 2022-03-07