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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 TWKf0Q1WT2nGOjAYqFP7xAIk/jCClr1Hh9P8se1WhNeuPhTMIGhNyWfUyYSqGu9w
 pTtDKr9h2E632npQoFhzmw==

<SEC-DOCUMENT>0001442440-10-000025.txt : 20100917
<SEC-HEADER>0001442440-10-000025.hdr.sgml : 20100917
<ACCEPTANCE-DATETIME>20100917210047
ACCESSION NUMBER:		0001442440-10-000025
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100915
FILED AS OF DATE:		20100917
DATE AS OF CHANGE:		20100917

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lechtzin Jeremy
		CENTRAL INDEX KEY:			0001442440

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-28271
		FILM NUMBER:		101079384

	MAIL ADDRESS:	
		STREET 1:		C/O THE KNOT, INC.
		STREET 2:		462 BROADWAY, 6TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10013

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KNOT INC
		CENTRAL INDEX KEY:			0001062292
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-NONSTORE RETAILERS [5960]
		IRS NUMBER:				133895178
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		462 BROADWAY 6TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10013
		BUSINESS PHONE:		2122198555

	MAIL ADDRESS:	
		STREET 1:		462 BROADWAY, 6TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10013
</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>2010-09-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001062292</issuerCik>
        <issuerName>KNOT INC</issuerName>
        <issuerTradingSymbol>KNOT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001442440</rptOwnerCik>
            <rptOwnerName>Lechtzin Jeremy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THE KNOT, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>462 BROADWAY, 6TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10013</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP/General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-09-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4400</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>47534</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-09-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>101</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.19</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>47433</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 31, 2010.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ JEREMY LECHTZIN</signatureName>
        <signatureDate>2010-09-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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