<SEC-DOCUMENT>0001127602-18-003958.txt : 20180205
<SEC-HEADER>0001127602-18-003958.hdr.sgml : 20180205
<ACCEPTANCE-DATETIME>20180205160152
ACCESSION NUMBER:		0001127602-18-003958
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180201
FILED AS OF DATE:		20180205
DATE AS OF CHANGE:		20180205

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HARRISON MICHAEL J
		CENTRAL INDEX KEY:			0001267858

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25121
		FILM NUMBER:		18574196

	MAIL ADDRESS:	
		STREET 1:		200 DOMAIN DRIVE
		CITY:			STRATHAM
		STATE:			NH
		ZIP:			03885

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sleep Number Corp
		CENTRAL INDEX KEY:			0000827187
		STANDARD INDUSTRIAL CLASSIFICATION:	HOUSEHOLD FURNITURE [2510]
		IRS NUMBER:				411597886
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1230

	BUSINESS ADDRESS:	
		STREET 1:		1001 THIRD AVENUE SOUTH
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55404
		BUSINESS PHONE:		7635517000

	MAIL ADDRESS:	
		STREET 1:		1001 THIRD AVENUE SOUTH
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55404

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SELECT COMFORT CORP
		DATE OF NAME CHANGE:	19980821
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-02-01</periodOfReport>

    <issuer>
        <issuerCik>0000827187</issuerCik>
        <issuerName>Sleep Number Corp</issuerName>
        <issuerTradingSymbol>SNBR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001267858</rptOwnerCik>
            <rptOwnerName>HARRISON MICHAEL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1001 THIRD AVENUE SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MINNEAPOLIS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55404</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-02-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2344</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27920</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Phantom Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-02-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2344</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2344</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4689.06</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each share of phantom stock was the economic equivalent of one share of Sleep Number common stock.  On 2/1/18, 2,344 shares of phantom stock were settled for an equal number of shares of Sleep Number common stock.</footnote>
        <footnote id="F2">Includes 2,420 restricted stock units that will vest over time.  On 2/1/18 the reporting person took receipt of 1,860 deferred restricted stock units.</footnote>
        <footnote id="F3">Each share of phantom stock is the economic equivalent of one share of common stock.  The shares of phantom stock become payable, in cash or common stock, at the election of the reporting person.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michael J. Harrison, by Rebecca L. Long, attorney-in-fact</signatureName>
        <signatureDate>2018-02-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
