<SEC-DOCUMENT>0001628280-17-006104.txt : 20170531
<SEC-HEADER>0001628280-17-006104.hdr.sgml : 20170531
<ACCEPTANCE-DATETIME>20170531162752
ACCESSION NUMBER:		0001628280-17-006104
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170526
FILED AS OF DATE:		20170531
DATE AS OF CHANGE:		20170531

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:		3565 PIEDMONT ROAD, NE
		STREET 2:		BUILDING 3, SUITE 700
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30305
		BUSINESS PHONE:		8669521647

	MAIL ADDRESS:	
		STREET 1:		3565 PIEDMONT ROAD, NE
		STREET 2:		BUILDING 3, SUITE 700
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30305

	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:			Fisher Helene Loraine
		CENTRAL INDEX KEY:			0001692905

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18492
		FILM NUMBER:		17881406

	MAIL ADDRESS:	
		STREET 1:		7617 CENTER STREET
		CITY:			FALLS CHURCH
		STATE:			VA
		ZIP:			22043
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_149626245777154.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-05-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001692905</rptOwnerCik>
            <rptOwnerName>Fisher Helene Loraine</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>DLH HOLDINGS CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>3565 PIEDMONT ROAD, N.E., BLDG. 3-700</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30305</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Pres, Mission Svcs &amp; Solutions</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-05-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.446</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1200</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael A. Goldstein, as attorney-in-fact for Helene Fisher</signatureName>
        <signatureDate>2017-05-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
