<SEC-DOCUMENT>0000785557-14-000040.txt : 20140924
<SEC-HEADER>0000785557-14-000040.hdr.sgml : 20140924
<ACCEPTANCE-DATETIME>20140924162544
ACCESSION NUMBER:		0000785557-14-000040
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20140922
FILED AS OF DATE:		20140924
DATE AS OF CHANGE:		20140924

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DLH Holdings Corp.
		CENTRAL INDEX KEY:			0000785557
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				221899798
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		1776 PEACHTREE STREET, N.W.
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309
		BUSINESS PHONE:		8669521647

	MAIL ADDRESS:	
		STREET 1:		1776 PEACHTREE STREET, N.W.
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TEAMSTAFF INC
		DATE OF NAME CHANGE:	19990216

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIGITAL SOLUTIONS INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			JohnBull Kathryn M.
		CENTRAL INDEX KEY:			0001553121

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18492
		FILM NUMBER:		141118631

	MAIL ADDRESS:	
		STREET 1:		1776 PEACHTREE STREET, NW
		STREET 2:		SUITE 300S
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30309
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_141159033413410.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-09-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000785557</issuerCik>
        <issuerName>DLH Holdings Corp.</issuerName>
        <issuerTradingSymbol>DLHC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001553121</rptOwnerCik>
            <rptOwnerName>JohnBull Kathryn M.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>DLH HOLDINGS CORP</rptOwnerStreet1>
            <rptOwnerStreet2>1776 PEACHTREE STREET N.W.</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30309</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.95</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2014-09-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>200000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-09-22</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>200000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This is an award of common stock purchase options under the Company's 2006 Long Term Incentive Plan, as amended. Of the options reported above, options to purchase 100,000 shares will vest and become exercisable on September 30, 2015 and the remainder will vest and become exercisable upon the satisfaction of certain vesting conditions.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kathryn M. JohnBull</signatureName>
        <signatureDate>2014-09-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
