<SEC-DOCUMENT>0001590976-18-000083.txt : 20180914
<SEC-HEADER>0001590976-18-000083.hdr.sgml : 20180914
<ACCEPTANCE-DATETIME>20180914160907
ACCESSION NUMBER:		0001590976-18-000083
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180912
FILED AS OF DATE:		20180914
DATE AS OF CHANGE:		20180914

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Springer Jackie D. Jr.
		CENTRAL INDEX KEY:			0001598726

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36290
		FILM NUMBER:		181071227

	MAIL ADDRESS:	
		STREET 1:		5075 KIMBERLY WAY
		CITY:			LOUDON
		STATE:			TN
		ZIP:			37774

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Malibu Boats, Inc.
		CENTRAL INDEX KEY:			0001590976
		STANDARD INDUSTRIAL CLASSIFICATION:	SHIP & BOAT BUILDING & REPAIRING [3730]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		5075 KIMBERLY WAY
		CITY:			LOUDON
		STATE:			TN
		ZIP:			37774
		BUSINESS PHONE:		865-458-5478

	MAIL ADDRESS:	
		STREET 1:		5075 KIMBERLY WAY
		CITY:			LOUDON
		STATE:			TN
		ZIP:			37774
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_153695573054933.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-09-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001590976</issuerCik>
        <issuerName>Malibu Boats, Inc.</issuerName>
        <issuerTradingSymbol>MBUU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001598726</rptOwnerCik>
            <rptOwnerName>Springer Jackie D. Jr.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5075 KIMBERLY WAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOUDON</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>37774</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <securityTitle>
                <value>Class A Common Stock</value>
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                    <value>D</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
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            <transactionDate>
                <value>2018-09-12</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>6105</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>52.38</value>
                </transactionPricePerShare>
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                    <value>D</value>
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                    <value>77969</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>30.87</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-09-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F7"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>2500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2018-09-12</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-11-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2500.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2500</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of Malibu Boats, Inc.'s (the &quot;Issuer&quot;) Class A Common Stock vesting under performance-based restricted stock awards granted on November 6, 2015.</footnote>
        <footnote id="F2">Includes 15,187 shares of restricted stock vesting in three substantially equal annual installments beginning on November 4, 2018, 3,390 shares of restricted stock vesting on November 6, 2018, 11,300 restricted stock vesting in two equal annual installments beginning on November 6, 2018 and 11,000 shares of restricted stock vesting in four equal annual installments beginning on November 6, 2018.</footnote>
        <footnote id="F3">Represents shares of the Issuer's Class A Common Stock vesting under performance-based restricted stock awards granted on November 6, 2015.</footnote>
        <footnote id="F4">Represents shares of the Issuer's Class A Common Stock vesting under performance-based restricted stock awards granted on November 4, 2016.</footnote>
        <footnote id="F5">Represents shares of the Issuer's Class A Common Stock vesting under performance-based restricted stock awards granted on November 6, 2017.</footnote>
        <footnote id="F6">Represents shares of the Issuer's Class A Common Stock withheld for tax withholding purposes in connection with the vesting of the performance-based restricted stock awards referenced in footnotes (1), (3), (4) and (5).</footnote>
        <footnote id="F7">Represents performance-based options vesting under options granted on November 6, 2017.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jackie D. Springer Jr., /s/ Wayne Wilson as attorney-in-fact</signatureName>
        <signatureDate>2018-09-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
