-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 T1a4Br80lsei3ewkdkMR3GtZC+sTMNUCFdR+D5SlSxmW6xhd6jvQaa317bXGhWDM
 g+7Vw4vg4YfPErVdyn/MbA==

<SEC-DOCUMENT>0001099409-10-000034.txt : 20101229
<SEC-HEADER>0001099409-10-000034.hdr.sgml : 20101229
<ACCEPTANCE-DATETIME>20101229105129
ACCESSION NUMBER:		0001099409-10-000034
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101227
FILED AS OF DATE:		20101229
DATE AS OF CHANGE:		20101229

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Kraton Performance Polymers, Inc.
		CENTRAL INDEX KEY:			0001321646
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
		IRS NUMBER:				200411521
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		15710 JOHN F. KENNEDY BLVD.
		STREET 2:		SUITE 300
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77032
		BUSINESS PHONE:		800 457-2866

	MAIL ADDRESS:	
		STREET 1:		15710 JOHN F. KENNEDY BLVD.
		STREET 2:		SUITE 300
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77032

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Polymer Holdings LLC
		DATE OF NAME CHANGE:	20050324

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GMT CAPITAL CORP
		CENTRAL INDEX KEY:			0001106191

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34581
		FILM NUMBER:		101277176

	BUSINESS ADDRESS:	
		STREET 1:		GMT CAPITAL CORP
		STREET 2:		2100 RIVEREDGE PARKWAY SUITE 840
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30328
		BUSINESS PHONE:		7709898261

	MAIL ADDRESS:	
		STREET 1:		GMT CAPITAL CORP
		STREET 2:		2100 RIVEREDGE PARKWAY SUITE 840
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30328
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-12-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001321646</issuerCik>
        <issuerName>Kraton Performance Polymers, Inc.</issuerName>
        <issuerTradingSymbol>KRA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001106191</rptOwnerCik>
            <rptOwnerName>GMT CAPITAL CORP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>GMT CAPITAL CORP</rptOwnerStreet1>
            <rptOwnerStreet2>2100 RIVEREDGE PARKWAY SUITE 840</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30328</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>24400</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>31.02</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3203055</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4 is being jointly filed by Bay Resource Partners, L.P., a Delaware limited partnership (&quot;Bay&quot;), Bay II Resource Partners, L.P., a Delaware limited partnership (&quot;Bay II&quot;), Bay Resource Partners Offshore Master Fund, L.P., an exempted limited partnership organized under the laws of the Cayman Islands (&quot;Offshore Fund&quot;), GMT Capital Corp., a Georgia corporation (&quot;GMT Capital&quot;), and Thomas E. Claugus, a United States citizen (&quot;Claugus&quot;).  The foregoing persons are hereinafter sometimes collectively referred to as the Reporting Persons.</footnote>
        <footnote id="F2">GMT Capital, the general partner of Bay and Bay II, has the power to direct the affairs of Bay and Bay II, including the voting and disposition of shares. As the discretionary investment manager of the Offshore Fund and certain other accounts, GMT Capital has power to direct the voting and disposition of shares held by the Offshore Fund and such accounts. Mr. Claugus is the President of GMT Capital and in that capacity directs the operations of each of Bay and Bay II and the voting and disposition of shares held by the Offshore Fund and separate client accounts managed by GMT Capital. GMT Capital and Mr. Claugus may be deemed to beneficially own indirect pecuniary interest as the result of performance-based fees and profit allocations. Each of GMT Capital and Mr. Claugus disclaims such beneficial ownership except to the extent ultimately realized.</footnote>
        <footnote id="F3">The aggregate number of shares of common stock purchased was 24,400 shares and such shares were purchased by the Reporting Persons in the following amounts:  Bay = 3,400 shares; Bay II = 4,000 shares; Offshore Fund = 16,000 shares; GMT Capital = 600 shares; Claugus = 400 shares.</footnote>
        <footnote id="F4">3,203,055 shares of common stock is the aggregate number of shares of common stock owned by the Reporting Persons and is owned as follows:  Bay = 424,900 shares directly owned by it; Bay II = 917,800 shares directly owned by it; Offshore Fund = 1,640,655 shares directly owned by it; GMT Capital = 130,100 shares of common stock beneficially owned by it with respect to separate client accounts managed by it; Claugus = 89,600 shares directly owned by him.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Thomas E. Claugus</signatureName>
        <signatureDate>2010-12-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----