Clearwater Paper stockholders approve 800K new shares for 2017 equity plan

Proposal 2 – Ratification of the Appointment of KPMG, LLP as Independent Registered Public Accounting Firm for 2023 The stockholders ratified the appointment of KPMG, LLP as the Company’s independent registered public accounting firm for 2023: For Against Abstain 15,674,599 250,107 5,467

Proposal 3 – Advisory Vote to Approve Named Executive Officer Compensation The compensation of the named executive officers as disclosed in the Company’s Proxy Statement pursuant to Item 402 of Regulation S-K was approved, on an advisory basis, by the stockholders as follows: For Against Abstain Broker Non-Votes 14,207,416 599,501 8,246 1,115,010

Proposal 5 – Approval of Amendments to Clearwater Paper Corporation 2017 Stock Incentive Plan The amendment to Clearwater Paper Corporation 2017 Stock Incentive Plan as disclosed in the Company’s Proxy Statement was approved by the stockholders as follows: For Against Abstain Broker Non-Votes 13,498,097 1,309,762 7,304 1,115,010

Proposal 4 – Advisory Vote on the Frequency of Say-on-Pay Vote The stockholders voted, on an advisory basis, for the frequency of the stockholder vote on the compensation of the Company’s named executive officers to occur as follows: 1 Year 2 Years 3 Years Abstain Broker Non-Votes 13,148,494 259,471 1,361,574 45,624 1,115,010

Proposal 1 – Election of Directors The following individuals were elected to serve as Class III Directors to hold office until the 2026 Annual Meeting of Stockholders or until the respective successors are duly elected and qualified: Nominee For Against Abstain Broker Non-Votes Joe W. Laymon 13,965,383 847,365 2,415 1,115,010 John P. O’Donnell 13,489,287 1,323,427 2,449 1,115,010 Christine M. Vickers Tucker 14,004,678 803,232 7,253 1,115,010