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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0000935836-08-000218.txt : 20080423
<SEC-HEADER>0000935836-08-000218.hdr.sgml : 20080423
<ACCEPTANCE-DATETIME>20080423160140
ACCESSION NUMBER:		0000935836-08-000218
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080421
FILED AS OF DATE:		20080423
DATE AS OF CHANGE:		20080423

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KAPSTONE PAPER & PACKAGING CORP
		CENTRAL INDEX KEY:			0001325281
		STANDARD INDUSTRIAL CLASSIFICATION:	PAPER MILLS [2621]
		IRS NUMBER:				202699372
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		C/O STONE-KAPLAN INVESTMENTS, LLC
		STREET 2:		ONE NORTHFIELD PLAZA, SUITE 480
		CITY:			NORTHFIELD
		STATE:			IL
		ZIP:			60093
		BUSINESS PHONE:		847-441-0929

	MAIL ADDRESS:	
		STREET 1:		C/O STONE-KAPLAN INVESTMENTS, LLC,
		STREET 2:		ONE NORTHFIELD PLAZA, SUITE 480
		CITY:			NORTHFIELD
		STATE:			IL
		ZIP:			60093

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KapStone Paper & Packaging CORP
		DATE OF NAME CHANGE:	20070104

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Stone Arcade Acquisition CORP
		DATE OF NAME CHANGE:	20050428

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GLASER JONATHAN M
		CENTRAL INDEX KEY:			0001264694

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33494
		FILM NUMBER:		08771857

	BUSINESS ADDRESS:	
		STREET 1:		1999 AVENUE OF THE STARS
		STREET 2:		SUITE 2530
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			94111
		BUSINESS PHONE:		3102012619

	MAIL ADDRESS:	
		STREET 1:		11601 WILSHIRE BLVD., SUITE 2180
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90025
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-04-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001325281</issuerCik>
        <issuerName>KAPSTONE PAPER &amp; PACKAGING CORP</issuerName>
        <issuerTradingSymbol>KPPC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001264694</rptOwnerCik>
            <rptOwnerName>GLASER JONATHAN M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11601 WILSHIRE BLVD., SUITE 2180</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-04-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-01-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2009-08-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2600</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2981364</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note 1</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Mr. Glaser is a control person of JMG Capital Management, Inc., a California corporation (&quot;JMG&quot;), JMG Capital Management, LLC, a Delaware limited liability company (&quot;JMG LLC&quot;), Pacific Capital Management, Inc., a California corporation (&quot;PCM&quot;) and Pacific Assets Management, LLC, a Delaware limited liability company (&quot;PAM&quot;).  PAM is the investment adviser to an investment fund and PCM is a member of PAM.  JMG LLC is the investment adviser and general partner of an investment limited partnership and JMG is a member of JMG LLC.  These securities are held directly by the investment limited partnership of which JMG LLC is investment adviser and general partner and the investment fund of which PAM is the investment adviser, for the benefit of the investors in that partnership and that fund.  Mr. Glaser disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Jonathan M. Glaser</signatureName>
        <signatureDate>2008-04-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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