<SEC-DOCUMENT>0001209191-22-052375.txt : 20221004
<SEC-HEADER>0001209191-22-052375.hdr.sgml : 20221004
<ACCEPTANCE-DATETIME>20221004171817
ACCESSION NUMBER:		0001209191-22-052375
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20221001
FILED AS OF DATE:		20221004
DATE AS OF CHANGE:		20221004

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HILLMAN JEANNE M
		CENTRAL INDEX KEY:			0001356114

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34146
		FILM NUMBER:		221293083

	MAIL ADDRESS:	
		STREET 1:		C/O WEYERHAEUSER COMPANY
		STREET 2:		220 OCCIDENTAL AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Clearwater Paper Corp
		CENTRAL INDEX KEY:			0001441236
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPERBOARD MILLS [2631]
		IRS NUMBER:				203594554
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		601 WEST RIVERSIDE AVENUE
		STREET 2:		SUITE 1100
		CITY:			SPOKANE
		STATE:			WA
		ZIP:			99201
		BUSINESS PHONE:		509.344.5900

	MAIL ADDRESS:	
		STREET 1:		601 WEST RIVERSIDE AVENUE
		STREET 2:		SUITE 1100
		CITY:			SPOKANE
		STATE:			WA
		ZIP:			99201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Potlatch Forest Products CORP
		DATE OF NAME CHANGE:	20080728
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-10-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001441236</issuerCik>
        <issuerName>Clearwater Paper Corp</issuerName>
        <issuerTradingSymbol>CLW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001356114</rptOwnerCik>
            <rptOwnerName>HILLMAN JEANNE M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 W RIVERSIDE AVE STE 1100</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SPOKANE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>99201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>39.86</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-10-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1823.524</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>39.86</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1823.524</value>
                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1823.524</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>39.03</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-10-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>174.865</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>39.03</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2031-01-01</value>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2031-01-01</value>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>174.865</value>
                    <footnoteId id="F5"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>174.865</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Phantom stock units are credited to the reporting person's account on the transaction date in accordance with the provisions of the Clearwater Paper Corporation Deferred Compensation Plan for Directors and will be converted to cash and paid on a 1-for-1 basis with the issuer's common stock.</footnote>
        <footnote id="F2">Phantom stock units will be converted to cash and paid upon the reporting person's termination from service with Clearwater Paper in accordance with the provisions of the Clearwater Paper Corporation Deferred Compensation Plan for Directors.</footnote>
        <footnote id="F3">Phantom stock unit beneficial ownership represents phantom stock allocated to the reporting person's Deferred Compensation Account since the reporting person's last report.  These phantom stock allocations represent an annual award grant for service from October 1, 2022 through April 30, 2023.  These phantom stock units will vest May 1, 2023.</footnote>
        <footnote id="F4">Phantom Stock units will be converted to cash and paid on the date previously elected by the reporting person in accordance with the provisions of the Clearwater Paper Corporation Deferred Compensation Plan for Directors.</footnote>
        <footnote id="F5">Phantom stock unit beneficial ownership represents phantom stock allocated to the reporting person's Deferred Compensation Account since the reporting person's last report.  These phantom stock allocations represent quarterly retainer meeting fees.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael S. Gadd, Attorney-in-Fact</signatureName>
        <signatureDate>2022-10-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
