<SEC-DOCUMENT>0001235468-20-000193.txt : 20201203
<SEC-HEADER>0001235468-20-000193.hdr.sgml : 20201203
<ACCEPTANCE-DATETIME>20201203170653
ACCESSION NUMBER:		0001235468-20-000193
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201201
FILED AS OF DATE:		20201203
DATE AS OF CHANGE:		20201203

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Angrick William P III
		CENTRAL INDEX KEY:			0001352618

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51813
		FILM NUMBER:		201367618

	MAIL ADDRESS:	
		STREET 1:		C/O LIQUIDITY SERVICES, INC.
		STREET 2:		1920 L STREET, N.W., 6TH FLOOR
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20036

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LIQUIDITY SERVICES INC
		CENTRAL INDEX KEY:			0001235468
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				522209244
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		6931 ARLINGTON ROAD
		STREET 2:		SUITE 200
		CITY:			BETHESDA
		STATE:			MD
		ZIP:			20814
		BUSINESS PHONE:		2024676868

	MAIL ADDRESS:	
		STREET 1:		6931 ARLINGTON ROAD
		STREET 2:		SUITE 200
		CITY:			BETHESDA
		STATE:			MD
		ZIP:			20814
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_160703319409447.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-12-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001235468</issuerCik>
        <issuerName>LIQUIDITY SERVICES INC</issuerName>
        <issuerTradingSymbol>LQDT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001352618</rptOwnerCik>
            <rptOwnerName>Angrick William P III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LIQUIDITY SERVICES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>6931 ARLINGTON ROAD, SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>BETHESDA</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>20814</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the Board and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5445072</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By the William P. Angrick III Revocable Trust</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
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                <sharesOwnedFollowingTransaction>
                    <value>873379</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By the William P. Angrick III 2005 Irrevocable Trust</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
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        </nonDerivativeHolding>
        <nonDerivativeHolding>
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                <value>Common Stock</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
                    <value>By the Stephanie S. Angrick 2005 Irrevocable Trust</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
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        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
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                    <value>114699</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
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                <natureOfOwnership>
                    <value>By the Stephanie S. Angrick Revocable Trust</value>
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        </nonDerivativeHolding>
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            <transactionAmounts>
                <transactionShares>
                    <value>131950</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <exerciseDate>
                <footnoteId id="F3"/>
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            <expirationDate>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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                <value>Employee Stock Grant</value>
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            <conversionOrExercisePrice>
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                <value>2020-12-01</value>
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                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>23700</value>
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                <transactionPricePerShare>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
                    <value>87080.0</value>
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                <footnoteId id="F15"/>
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                <value>2021-10-01</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2050.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2050</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeHolding>
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                <footnoteId id="F16"/>
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            <expirationDate>
                <value>2026-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>67725.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>67725</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
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            <conversionOrExercisePrice>
                <value>9.13</value>
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                <footnoteId id="F17"/>
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            <expirationDate>
                <value>2026-10-01</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>48000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>48000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>9.13</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F18"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>48000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>48000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.29</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F19"/>
            </exerciseDate>
            <expirationDate>
                <value>2025-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>83178.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>83178</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.29</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F20"/>
            </exerciseDate>
            <expirationDate>
                <value>2025-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20794.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20794</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.45</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F21"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>29980.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>29980</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>24.19</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F22"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>48122.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>48122</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>46.72</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F23"/>
            </exerciseDate>
            <expirationDate>
                <value>2022-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14695.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14695</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>37.72</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F24"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-10-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>32139.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>32139</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These shares are held in a trust for the benefit of the reporting person. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of the securities for the purposes of Section 16 or for any other purpose.</footnote>
        <footnote id="F2">These shares are held in a trust for the benefit of the reporting person's spouse, who is also trustee of the trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of the securities for the purposes of Section 16 or for any other purpose.</footnote>
        <footnote id="F3">This option becomes exercisable, if at all, based on the Issuer's achievement of certain stock price appreciation milestones.</footnote>
        <footnote id="F4">12/48th of this option grant will vest on January 1, 2022 and thereafter, 1/48th will vest each month for thirty-six months.</footnote>
        <footnote id="F5">Each restricted stock unit is the economic equivalent of one share of Liquidity Services, Inc. Common Stock.</footnote>
        <footnote id="F6">Twenty-five percent of this restricted stock unit grant will vest on January 1, 2022 and thereafter, an additional 1/4th will vest on each of January 1, 2023, January 1, 2024 and January 1, 2025.</footnote>
        <footnote id="F7">These restricted stock units vest, if at all, based on the Issuer's achievement of certain stock price appreciation milestones.</footnote>
        <footnote id="F8">This option becomes exercisable, if at all, based on total shareholder return (TSR) milestones.  TSR is calculated based on the change in a the issuer's stock price during the performance period, taking into account any dividends paid during that period, which are assumed to be reinvested in the stock.</footnote>
        <footnote id="F9">12/48th of this option grant will vest on January 1, 2021 and thereafter, an additional 1/48th will vest each month for thirty-six months.</footnote>
        <footnote id="F10">These restricted stock units vest, if at all, based on total shareholder return (TSR) milestones.  TSR is calculated based on the change in a the issuer's stock price during the performance period, taking into account any dividends paid during that period, which are assumed to be reinvested in the stock.</footnote>
        <footnote id="F11">Twenty-five percent of this restricted stock unit grant will vest on January 1, 2021 and thereafter, an additional 1/4th will vest on each of January 1, 2022, January 1, 2023 and January 1, 2024.</footnote>
        <footnote id="F12">15/48th of this option grant vested on January 1, 2020 and thereafter, an additional 1/48th will vest each month for thirty-three months.</footnote>
        <footnote id="F13">Twenty-five percent of this restricted stock unit grant vested on January 1, 2020 and thereafter, an additional 1/4th vests on each of January 1, 2021, January 1, 2022, and January 1, 2023.</footnote>
        <footnote id="F14">15/48th of this option grant vested on January 1, 2019 and thereafter, an additional 1/48th vests each month for thirty three months.</footnote>
        <footnote id="F15">Twenty-five percent of this restricted stock unit grant vested on January 1, 2019 and thereafter, an additional 1/4th vests on each of October 1, 2019, October 1, 2020, and October 1, 2021.</footnote>
        <footnote id="F16">These restricted stock units will vest, if at all, based on the issuer's achievement of certain financial milestones.</footnote>
        <footnote id="F17">These options became fully exercisable on October 1, 2020.</footnote>
        <footnote id="F18">These options become exercisable, if at all, based on the issuer's achievement of certain financial milestones.</footnote>
        <footnote id="F19">These options became fully exercisable on October 1, 2019.</footnote>
        <footnote id="F20">75% of these options were certified as exercisable on December 6, 2018.  The remaining options become exercisable, if at all, based on the issuer's achievement of certain financial milestones.</footnote>
        <footnote id="F21">These options became fully exercisable on October 1, 2018.</footnote>
        <footnote id="F22">These options became fully exercisable on October 1, 2017.</footnote>
        <footnote id="F23">These options became fully exercisable on October 1, 2016.</footnote>
        <footnote id="F24">These options became fully exercisable on October 1, 2015.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark A. Shaffer, by power of attorney</signatureName>
        <signatureDate>2020-12-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
