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See the reverse side of this notice to obtainproxy materials and voting instructions.*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for theStockholder Meeting to Be Held on <mtgdate>. You are receiving this communication because you holdshares in the above named company. This is not a ballot. You cannot use this notice to votethese shares. This communication presents only anoverview of the more complete proxy materials that areavailable to you on the Internet. You may view the proxymaterials online at or easily request apaper copy (see reverse side). We encourage you to access and review all of the importantinformation contained in the proxy materials before voting. Meeting InformationMeeting Type:<mtgtype> For holders as of:<recdate> Date: Time: <mtgtime> Location: 0000448476_1 R1.0.1.18CLEARWATER PAPER CORPORATIONCLEARWATER PAPER CORPORATION601 W. RIVERSIDE AVENUESUITE 1100SPOKANE, WA 99201Annual MeetingMarch 16, 2020May 13, 2020May 13, 20209:00 AM PDT601 W. Riverside Ave. Spokane, WA 99201



Please Choose One of the Following Voting MethodsVote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession  of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special  requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to Have the information that is printed in the boxmarked by the arrow available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. How To Vote ..... Before You VoteHow to Access the Proxy MaterialsProxy Materials Available to VIEW or RECEIVE: How to View Online: Have the information that is printed in the box marked by the arrow (located on thefollowing page) and visit: How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge forrequesting a copy. Please choose one of the following methods to make your request: 1)BY INTERNET:www.proxyvote.com2)BY TELEPHONE:1-800-579-16393)BY E-MAIL**If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box markedby the arrow (located on the following page) in the subject line. ..... ..... 0000448476_2 R1.0.1.181. Notice & Proxy Statement 2. Annual Report/10KRequests, instructions and other inquiries sent to this e-mail address  will NOT be forwarded to your investmentadvisor. Please make the request as instructed above on or before April 29, 2020 to facilitate timely delivery.



Voting items0000448476_3 R1.0.1.18The Board of Directors recommends you vote FOR the following: 1. Election of Directors  Nominees1a Joe W. Laymon1b John P. O'DonnellThe Board of Directors recommends you vote FOR proposals 2, 3 and 4.2. Ratification of the appointment of KPMG, LLP as the Company's independent registered public accounting firm  for 2020.3. Advisory vote to approve named executive officer compensation. 4 Approval of amendments to Clearwater Paper Corporation 2017 Stock Incentive Plan. NOTE: THIS PROXY WILL BE VOTED AS DIRECTED BUT IF NOT OTHERWISE DIRECTED, FOR EACH DIRECTOR NOMINEE AND FORPROPOSALS 2, 3 & 4.



0000448476_4 R1.0.1.18