X0306 4 2022-03-03 0 0001441236 Clearwater Paper Corp CLW 0001450653 Gadd Michael S 601 W RIVERSIDE AVE. SUITE 1100 SPOKANE WA 99201 0 1 0 0 Sr. Vice President Common Stock 2022-03-03 4 A 0 6406 0.00 A 80030 D Common Stock 2022-03-03 4 A 0 8039 29.14 A 88069 D Common Stock 2022-03-03 4 F 0 1984 29.14 D 86085 D Common Stock 2022-03-03 4 F 0 506 28.62 D 85579 D Common Stock 2022-03-04 4 F 0 383 29.14 D 85196 D Common Stock 28 I 401(k) 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. Excludes 227 shares previously transferred in a non-reportable transaction. Represents aggregate number of shares of common stock issuable in settlement of 2019-2021 Performance Share Grant. Represents shares withheld by Clearwater Paper Corporation to satisfy tax witholding requirements due at settlement of 2019-2021 Performance Share Grant. Represents shares withheld by Clearwater Paper Corporation to satisfy tax withholding requirements due at settlement of restricted stock units that vested March 3, 2022. Represents shares withheld by Clearwater Paper Corporation to satisfy tax withholding requirements due at settlement of restricted stock units that vested March 4, 2022. Michael S. Gadd 2022-03-07