<SEC-DOCUMENT>0001104659-17-051283.txt : 20170811
<SEC-HEADER>0001104659-17-051283.hdr.sgml : 20170811
<ACCEPTANCE-DATETIME>20170811121549
ACCESSION NUMBER:		0001104659-17-051283
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170809
FILED AS OF DATE:		20170811
DATE AS OF CHANGE:		20170811

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kumin Michael Andrew
		CENTRAL INDEX KEY:			0001368414

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36666
		FILM NUMBER:		171023837

	MAIL ADDRESS:	
		STREET 1:		GREAT HILL PARTNERS,LLC
		STREET 2:		ONE LIBERTY SQUARE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Wayfair Inc.
		CENTRAL INDEX KEY:			0001616707
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-CATALOG & MAIL-ORDER HOUSES [5961]
		IRS NUMBER:				364791999
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4 COPLEY PLACE
		STREET 2:		7TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617 532 6100

	MAIL ADDRESS:	
		STREET 1:		4 COPLEY PLACE
		STREET 2:		7TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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    <periodOfReport>2017-08-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001616707</issuerCik>
        <issuerName>Wayfair Inc.</issuerName>
        <issuerTradingSymbol>W</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001368414</rptOwnerCik>
            <rptOwnerName>Kumin Michael Andrew</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WAYFAIR INC.,4 COPLEY PLACE,</rptOwnerStreet1>
            <rptOwnerStreet2>7TH FLOOR,</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-08-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>1495870</value>
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                <transactionPricePerShare>
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                    <value>I</value>
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                <natureOfOwnership>
                    <value>By Great Hill Equity Partners IV, L.P.</value>
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        <nonDerivativeTransaction>
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                    <value>By Great Hill Partners GP IV, L.P.</value>
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                    <value>By Great Hill Partners GP IV, L.P.</value>
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        <nonDerivativeTransaction>
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                <value></value>
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                <transactionShares>
                    <value>38101</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                    <value>A</value>
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                <sharesOwnedFollowingTransaction>
                    <value>88900</value>
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                    <value>D</value>
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            <securityTitle>
                <value>Class A Common Stock</value>
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            <transactionDate>
                <value>2017-08-10</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>4080</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>70</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>7231</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Great Hill Investors, LLC</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
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        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Great Hill Equity Partners IV, L.P made a pro rata distribution for no consideration of an aggregate of 1,495,870 shares of Class A Common Stock of Wayfair Inc., 335,076 of which were distributed to its general partner , and 1,160,794 of which were distributed to its limited partners, on August 9, 2017.</footnote>
        <footnote id="F2">These securities are owned by Great Hill Equity Partners IV, L.P. Great Hill Partners GP IV, L.P. is the sole general partner of Great Hill Equity Partners IV, L.P. and GHP IV, LLC is the sole general partner of Great Hill Partners GP IV, L.P. GHP IV, LLC is controlled by Christopher S. Gaffney, John G. Hayes, Michael A. Kumin, Mark D. Taber and Matthew T. Vettel and, as such, they may be deemed to indirectly beneficially own the shares beneficially owned by Great Hill Equity Partners IV, L.P. Each of Messrs. Gaffney, Hayes, Kumin, Taber and Vettel disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">These securities are owned by Great Hill Partners GP IV, L.P. GHP IV, LLC is the sole general partner of Great Hill Partners GP IV, L.P. GHP IV, LLC is controlled by Christopher S. Gaffney, John G. Hayes, Michael A. Kumin, Mark D. Taber and Matthew T. Vettel and, as such, they may be deemed to indirectly beneficially own the shares beneficially owned by Great Hill Equity Partners IV, L.P. Each of Messrs. Gaffney, Hayes, Kumin, Taber and Vettel disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F4">Great Hill Partners GP, IV, L.P. made a further pro rata distribution for no consideration of an aggregate of 335,076 shares of Class A Common Stock of Wayfair, Inc., 38,101 of which were distributed to Michael A. Kumin, on August 9, 2017.</footnote>
        <footnote id="F5">These securities are owned by Great Hill Investors, LLC. Great Hill Investors, LLC is controlled by Christopher S. Gaffney, John G. Hayes, Michael A. Kumin, Mark D. Taber and Matthew T. Vettel and, as such, they may be deemed to indirectly beneficially own the shares beneficially owned by Great Hill Investors, LLC. Each of Messrs. Gaffney, Hayes, Kumin, Taber and Vettel disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Laurie T. Gerber, as attorney-in-fact for Michael A. Kumin</signatureName>
        <signatureDate>2017-08-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
