Clearwater Paper Corporation Announces Extension of Expiration Date and Results to Date Relating to Cash Tender Offer for Cellu

SPOKANE, Wash.--([ BUSINESS WIRE ])--Clearwater Paper Corporation (NYSE:CLW) (aClearwater Papera) today announced the extension of the Expiration Date, as well as the results to date, relating to the cash tender offer (the aTender Offera) to purchase any and all of Cellu Tissue Holdings, Inc.a�s (aCellu Tissuea) outstanding 11% Senior Secured Notes due 2014 (the aCellu Notesa).

The Tender Offer is being made upon the terms and subject to the conditions set forth in Clearwater Papera�s Offer to Purchase dated November 5, 2010 (the aOffer to Purchasea), and in connection with the Agreement and Plan of Merger, dated as of September15, 2010 (the aMerger Agreementa), among Clearwater Paper, Cellu Tissue, and Sand Dollar Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of Clearwater Paper (aMerger Suba), pursuant to which, subject to the satisfaction of certain conditions, Merger Sub will merge with and into Cellu Tissue (the aMergera). As a result of the Merger, Cellu Tissue will become a wholly owned subsidiary of Clearwater Paper.

The Expiration Date for the Tender Offer has been extended to 11:00 a.m., New York City time, on December 27, 2010, unless further extended by Clearwater Paper pursuant to the terms of the Offer to Purchase.

As of 5:00 p.m., New York City time, on December 6, 2010, tenders had been received from holders of $234.357 million (99.95%) in aggregate principal amount of the Cellu Notes. Holders who validly tendered their Cellu Notes on or before November 30, 2010, and have such Cellu Notes accepted for payment by Clearwater Paper will receive the Total Consideration (as defined in the Offer to Purchase) per $1,000 principal amount of Cellu Notes and accrued and unpaid interest up to, but not including, the payment date (the aPayment Datea). Holders who tender their Cellu Notes after November 30, 2010, but on or prior to the Expiration Date will receive the Total Consideration per $1,000 principal amount of Cellu Notes validly tendered, less the early tender payment of $30.00 per $1,000 principal amount of Cellu Notes.

The Total Consideration per $1,000 principal amount of Cellu Notes validly tendered on or before November 30, 2010, will be calculated based on the present value on the Payment Date of the sum of the Redemption Price on the Redemption Date plus interest payments through the Redemption Date, determined using a discount factor equal to the yield on the Price Determination Date (as defined in the Offer to Purchase) of the Reference Security plus a fixed spread of 50 basis points. Clearwater Paper expects that the Price Determination Date will be 2:00 p.m., New York City time, on December 13, 2010.

The Withdrawal Time relating to the Tender Offer expired at 5:00 p.m., New York City time, on Friday, November 19, 2010. As a result, all Cellu Notes previously tendered and any Cellu Notes that are properly tendered after the date hereof may not be withdrawn unless Clearwater Paper makes a material change to the terms of the Tender Offer or is otherwise required by law to permit withdrawal.

The Tender Offer is conditioned upon the satisfaction of, or, where applicable, Clearwater Papera�s waiver of, certain conditions, including that all of the conditions precedent to the closing of the Merger as set forth in the Merger Agreement shall have been satisfied or waived, and certain other customary conditions.

The complete terms and conditions of the Tender Offer are described in the Offer to Purchase, a copy of which may be obtained by contacting D. F. King & Co., Inc., the information agent for the Tender Offer, at 800-431-9643 (U.S. toll-free). BofA Merrill Lynch is the exclusive dealer manager for the Tender Offer. Additional information concerning the Tender Offer may be obtained by contacting BofA Merrill Lynch, Debt Advisory Services, at 980-388-9217 (collect) or 888-292-0070 (U.S. toll-free).

This press release does not constitute an offer to purchase the Cellu Notes. No offer, solicitation, purchase or sale will be made in any jurisdiction in which such an offer, solicitation, or sale would be unlawful. The Tender Offer is being made solely pursuant to the Offer to Purchase and related transmittal documents.

FORWARD-LOOKING STATEMENTS

This press release contains certain forward-looking statements that involve risks and uncertainties, including, but not limited to, statements regarding the Tender Offer. These forward-looking statements are based on Clearwater Papera�s current expectations, estimates and assumptions that are subject to change, and actual results may differ materially from the forward-looking statements. Factors that could cause actual results to differ materially include, but are not limited to, the risk that the conditions to the Tender Offer may be delayed or not occur. For a discussion of additional factors that may cause results to differ, see Clearwater Papera�s public filings with the Securities and Exchange Commission. These forward-looking statements speak only as of the date thereof. Clearwater Paper does not undertake to update any forward-looking statements.

ADDITIONAL INFORMATION AND WHERE TO FIND IT

On December 1, 2010, Cellu Tissue filed with the SEC a definitive proxy statement and other relevant material in connection with the Merger. The definitive proxy statement has been sent or given to the stockholders of Cellu Tissue. Before making any voting or investment decision with respect to the Merger, investors and stockholders of Cellu Tissue are urged to read the proxy statement and the other relevant material because they contain important information about the Merger. The proxy statement and other relevant materials, and any other documents filed by Cellu Tissue with the SEC, may be obtained free of charge at the SEC's website at [ www.sec.gov ], at Cellu Tissuea�s Investor Relations website at cellutissue.com/investor (click aSEC filingsa) or from Cellu Tissue by contacting Investor Relations by mail at 1855 Lockeway Drive, Suite 501, Alpharetta, Georgia 30004, Attention: Investor Relations, or by telephone at 678-393-2651.

PARTICIPANTS IN THE SOLICITATION

Clearwater Paper and its directors and executive officers may be deemed to be participants in the solicitation of proxies from Cellu Tissue stockholders in connection with the proposed Merger. Information about Clearwater Papera�s directors and executive officers is set forth in Clearwater Papera�s proxy statement on Schedule 14A filed with the SEC on March 29, 2010, and its Annual Report on Form 10-K for the year ended December 31, 2009, filed with the SEC on February 26, 2010. Additional information regarding the interests of participants in the solicitation of proxies in connection with the Merger is included in the definitive proxy statement that Cellu Tissue filed with the SEC on December 1, 2010.

ABOUT CLEARWATER PAPER

Clearwater Paper manufactures quality consumer tissue, bleached paperboard and wood products at six facilities across the country. The company is a premier supplier of private label tissue to major retail grocery chains, and also produces bleached paperboard used by quality-conscious printers and packaging converters. Clearwater Papera�s 2,500 employees build shareholder value by developing strong customer partnerships through quality and service.

For additional information on Clearwater Paper, please visit our website at [ www.clearwaterpaper.com ].

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Clearwater Paper Corporation Announces Extension of Expiration Date and Results to Date Relating to Cash Tender Offer for Cellu