<SEC-DOCUMENT>0001288469-22-000116.txt : 20220524
<SEC-HEADER>0001288469-22-000116.hdr.sgml : 20220524
<ACCEPTANCE-DATETIME>20220524211134
ACCESSION NUMBER:		0001288469-22-000116
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220520
FILED AS OF DATE:		20220524
DATE AS OF CHANGE:		20220524

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SEENDRIPU KISHORE
		CENTRAL INDEX KEY:			0001478340

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34666
		FILM NUMBER:		22958747

	MAIL ADDRESS:	
		STREET 1:		5966 LA PLACE COURT
		STREET 2:		SUITE 100
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92011

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAXLINEAR INC
		CENTRAL INDEX KEY:			0001288469
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				141896129
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5966 LA PLACE CT.
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92008
		BUSINESS PHONE:		760-692-0711

	MAIL ADDRESS:	
		STREET 1:		5966 LA PLACE CT.
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92008
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_165344107876290.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2022-05-20</periodOfReport>

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    <issuer>
        <issuerCik>0001288469</issuerCik>
        <issuerName>MAXLINEAR INC</issuerName>
        <issuerTradingSymbol>MXL</issuerTradingSymbol>
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            <rptOwnerName>SEENDRIPU KISHORE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MAXLINEAR, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>5966 LA PLACE COURT, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>CARLSBAD</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92008</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman, President and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <footnoteId id="F1"/>
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            <ownershipNature>
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                    <value>See footnote</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
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                <natureOfOwnership>
                    <value>See footnote</value>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F5"/>
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            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
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                <sharesOwnedFollowingTransaction>
                    <value>303445</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnoe</value>
                    <footnoteId id="F6"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>396526</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>396526</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F8"/>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>404430</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F9"/>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>404430</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F10"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
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            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
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                    <value>18920</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F11"/>
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            </ownershipNature>
        </nonDerivativeHolding>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
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            <transactionDate>
                <value>2022-05-20</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10621</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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            <exerciseDate>
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            </exerciseDate>
            <expirationDate>
                <footnoteId id="F12"/>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>42844</value>
                </sharesOwnedFollowingTransaction>
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        <derivativeTransaction>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>3895</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F13"/>
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            <expirationDate>
                <footnoteId id="F13"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>3895.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23568</value>
                </sharesOwnedFollowingTransaction>
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    <footnotes>
        <footnote id="F1">Each restricted stock unit (&quot;RSU&quot;) represents a contingent right to receive one share of MaxLinear, Inc. Common Stock.</footnote>
        <footnote id="F2">Shares held by the Seendripu Family Trust dated 10/5/09, a trust for the benefit of the Reporting Person and the Reporting Person's spouse, for which the Reporting Person and the Reporting Person's spouse serve as trustees.</footnote>
        <footnote id="F3">Shares held by the Kishore V. Seendripu 2022 Annuity Trust A, a grantor retained annuity trust, for which the Reporting Person serves as trustee.</footnote>
        <footnote id="F4">Shares held by the Rekha S. Seendripu 2022 Annuity Trust A, a grantor retained annuity trust, for which the Reporting Person serves as trustee.</footnote>
        <footnote id="F5">Shares held by the Kishore V. Seendripu 2020 Annuity Trust A dated June 1, 2020, a grantor retained annuity trust, for which the Reporting Person serves as trustee.</footnote>
        <footnote id="F6">Shares held by the Rekha S. Seendripu 2020 Annuity Trust A dated June 1, 2020, a grantor retained annuity trust, for which the Reporting Person serves as trustee.</footnote>
        <footnote id="F7">Shares held by the IKS Heritage Trust dated July 13, 2020, a trust for the benefit of the Reporting Person's child, and for which the Reporting Person serves as co-trustee.</footnote>
        <footnote id="F8">Shares held by the SS Heritage Trust dated July 13, 2020, a trust for the benefit of the Reporting Person's child, and for which the Reporting Person serves as co-trustee.</footnote>
        <footnote id="F9">Shares held by the Ishan Krishna Seendripu Trust dtd 10/5/09, a trust for the benefit of the Reporting Person's child, and for which the Reporting Person serves as co-trustee.</footnote>
        <footnote id="F10">Shares held by the Samira Seendripu Trust dtd 10/5/2009, a trust for the benefit of the Reporting Person's child, and for which the Reporting Person serves as co-trustee.</footnote>
        <footnote id="F11">Shares held by the Seendripu Relatives Trust dated 10/5/09, a trust for the benefit of the Reporting Person's parents and siblings, and for which the Reporting Person serves as trustee.</footnote>
        <footnote id="F12">Subject to the Reporting Person continuing to be a Service Provider (as defined in the 2010 Equity Incentive Plan) through each applicable vesting date, one-fourth (1/4th) of the 85,689 RSUs subject to the award will vest on May 20, 2021, and one fourth (1/4th) of the RSUs subject to the award will vest on each May 20, thereafter, such that the award will be fully vested on May 20, 2024.</footnote>
        <footnote id="F13">Subject to the Reporting Person continuing to be a Service Provider (as defined in the 2010 Equity Incentive Plan) through each applicable vesting date, one-fourth (1/4th) of the 31,424 RSUs will vest on May 20, 2022, and one-fourth (1/4th) of the RSUs subject to the award will vest on each May 20 thereafter, such that the award will be fully vested on May 20, 2025.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Connie Kwong, as Attorney-in-Fact</signatureName>
        <signatureDate>2022-05-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
