<SEC-DOCUMENT>0001620533-17-000160.txt : 20171128
<SEC-HEADER>0001620533-17-000160.hdr.sgml : 20171128
<ACCEPTANCE-DATETIME>20171128170407
ACCESSION NUMBER:		0001620533-17-000160
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171124
FILED AS OF DATE:		20171128
DATE AS OF CHANGE:		20171128

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GARUTTI MARIA L
		CENTRAL INDEX KEY:			0001633960

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36823
		FILM NUMBER:		171226078

	MAIL ADDRESS:	
		STREET 1:		C/O SHAKE SHACK INC.
		STREET 2:		24 UNION SQUARE EAST, 5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GARUTTI RANDALL J
		CENTRAL INDEX KEY:			0001632017

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36823
		FILM NUMBER:		171226079

	MAIL ADDRESS:	
		STREET 1:		C/O SHAKE SHACK INC.
		STREET 2:		24 UNION SQUARE EAST, 5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GARUTTI RONALD J JR
		CENTRAL INDEX KEY:			0001633954

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36823
		FILM NUMBER:		171226076

	MAIL ADDRESS:	
		STREET 1:		C/O SHAKE SHACK INC.
		STREET 2:		24 UNION SQUARE EAST, 5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			RANDALL J. GARUTTI GST TRUST DATED 12/30/2014
		CENTRAL INDEX KEY:			0001633809

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36823
		FILM NUMBER:		171226077

	BUSINESS ADDRESS:	
		STREET 1:		C/O SHAKE SHACK INC.
		STREET 2:		24 UNION SQUARE EAST, 5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003
		BUSINESS PHONE:		646-747-7200

	MAIL ADDRESS:	
		STREET 1:		C/O SHAKE SHACK INC.
		STREET 2:		24 UNION SQUARE EAST, 5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Shake Shack Inc.
		CENTRAL INDEX KEY:			0001620533
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-EATING & DRINKING PLACES [5810]
		IRS NUMBER:				471941186
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		24 UNION SQUARE EAST
		STREET 2:		5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003
		BUSINESS PHONE:		(646) 747-7200

	MAIL ADDRESS:	
		STREET 1:		24 UNION SQUARE EAST
		STREET 2:		5TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10003
</SEC-HEADER>
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<SEQUENCE>1
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<DESCRIPTION>FORM 4
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    <periodOfReport>2017-11-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001620533</issuerCik>
        <issuerName>Shake Shack Inc.</issuerName>
        <issuerTradingSymbol>SHAK</issuerTradingSymbol>
    </issuer>

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            <rptOwnerCik>0001632017</rptOwnerCik>
            <rptOwnerName>GARUTTI RANDALL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SHAKE SHACK INC.</rptOwnerStreet1>
            <rptOwnerStreet2>24 UNION SQUARE EAST, 5TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10003</rptOwnerZipCode>
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            <officerTitle>Chief Executive Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001633960</rptOwnerCik>
            <rptOwnerName>GARUTTI MARIA L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SHAKE SHACK INC.</rptOwnerStreet1>
            <rptOwnerStreet2>24 UNION SQUARE EAST, 5TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10003</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001633809</rptOwnerCik>
            <rptOwnerName>RANDALL J. GARUTTI GST TRUST DATED 12/30/2014</rptOwnerName>
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        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SHAKE SHACK INC.,</rptOwnerStreet1>
            <rptOwnerStreet2>24 UNION SQUARE EAST, 5TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10003</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001633954</rptOwnerCik>
            <rptOwnerName>GARUTTI RONALD J JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SHAKE SHACK INC.,</rptOwnerStreet1>
            <rptOwnerStreet2>24 UNION SQUARE EAST, 5TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10003</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>CLASS A COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18961</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>CLASS A COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8000</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>37.2363</value>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10961</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>CLASS B COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>645051</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>CLASS B COMMON STOCK</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>55972</value>
                    <footnoteId id="F6"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>BY TRUST</value>
                    <footnoteId id="F6"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Membership Interests</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F7"/>
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            <transactionDate>
                <value>2017-11-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>8000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>CLASS A COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>8000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>645051</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeHolding>
            <securityTitle>
                <value>Common Membership Interests</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F7"/>
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            <exerciseDate>
                <footnoteId id="F7"/>
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                <footnoteId id="F7"/>
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                <underlyingSecurityTitle>
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                    <value>55972</value>
                    <footnoteId id="F8"/>
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                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
                    <value>BY TRUST</value>
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        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of Class A Common Stock (&quot;Class A Stock&quot;) of Shake Shack Inc. (the &quot;Issuer&quot;) that were obtained upon a redemption of an equal number of common membership interests in SSE Holdings, LLC (the &quot;LLC Interests&quot;).</footnote>
        <footnote id="F2">Represents shares of Class A Stock that were disposed of by Mr. Garutti pursuant to a 10b5-1 trading plan entered into on August 23, 2016 and modified on March 6, 2017.</footnote>
        <footnote id="F3">The transaction was executed in multiple trades at prices ranging from $37.1300 to $37.4400. The price reported above reflects the weighted average sales price.</footnote>
        <footnote id="F4">Each Reporting Person hereby undertakes to provide upon request to the SEC Staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction.</footnote>
        <footnote id="F5">Pursuant to the Amended and Restated Certificate of Incorporation of the Issuer, the shares of the Issuer's Class B Common Stock (&quot;Class B Stock&quot;) are cancelled for no consideration on a one-to-one basis upon redemption of the LLC Interests for shares of Class A Stock of the Issuer.</footnote>
        <footnote id="F6">Represents shares of Class B Stock of the Issuer held by The Randall J. Garutti 2014 GS Trust (the &quot;Trust&quot;). Ronald Garutti, Jr. the brother of Randall Garutti, and Maria Garutti, the wife of Randall Garutti, are the trustees of the Trust. Each Reporting Person disclaims beneficial ownership of such securities except to the extent of such Reporting Person's pecuniary interest.</footnote>
        <footnote id="F7">The LLC Interests are redeemable for an equal number of shares of the Issuer's Class A Common Stock or, at the election of the Issuer, cash equal to the volume-weighted average market price of such shares. The LLC Interests have no expiration date.</footnote>
        <footnote id="F8">Represents LLC Interests held by the Trust. Each Reporting Person disclaims beneficial ownership of such interests except to the extent of such Reporting Person's pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Ronald Palmese, Jr., Esq., Attorney-in-Fact for Randall J. Garutti</signatureName>
        <signatureDate>2017-11-28</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Ronald Palmese, Jr., Esq., Attorney-in-Fact for Maria L. Garutti</signatureName>
        <signatureDate>2017-11-28</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Ronald Palmese, Jr., Esq., Attorney-in-Fact for The Randall J. Garutti 2014 GST Trust</signatureName>
        <signatureDate>2017-11-28</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Ronald Palmese, Jr., Esq., Attorney-in-Fact for Ronald J. Garutti, Jr.</signatureName>
        <signatureDate>2017-11-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
