<SEC-DOCUMENT>0000930420-20-000228.txt : 20201112
<SEC-HEADER>0000930420-20-000228.hdr.sgml : 20201112
<ACCEPTANCE-DATETIME>20201112130946
ACCESSION NUMBER:		0000930420-20-000228
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201111
FILED AS OF DATE:		20201112
DATE AS OF CHANGE:		20201112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			STRUZZIERO RALPH
		CENTRAL INDEX KEY:			0001219795

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26058
		FILM NUMBER:		201305383

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KFORCE INC
		CENTRAL INDEX KEY:			0000930420
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				593264661
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1001 EAST PALM AVENUE
		STREET 2:		SUITE
		CITY:			TAMPA
		STATE:			FL
		ZIP:			33605
		BUSINESS PHONE:		8135525000

	MAIL ADDRESS:	
		STREET 1:		1001 EAST PALM AVENUE
		STREET 2:		SUITE
		CITY:			TAMPA
		STATE:			FL
		ZIP:			33605

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KFORCE  INC
		DATE OF NAME CHANGE:	20000517

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROMAC INTERNATIONAL INC
		DATE OF NAME CHANGE:	19950502
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_160520457172501.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-11-11</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000930420</issuerCik>
        <issuerName>KFORCE INC</issuerName>
        <issuerTradingSymbol>KFRC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001219795</rptOwnerCik>
            <rptOwnerName>STRUZZIERO RALPH</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1001 EAST PALM AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TAMPA</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33605</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-11-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1987</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>41.73</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By:Spouse</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>26194</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F3"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14457.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14457</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for the purposes of Section 16 or any other purpose.</footnote>
        <footnote id="F2">Includes 3,623 shares of restricted stock.</footnote>
        <footnote id="F3">The Restricted Stock Units (&quot;RSUs&quot;) were granted under the stock incentive plan approved at the time and in consideration of the Reporting Person's service as a director. Each RSU represents a contingent right to receive one share of Kforce Inc. common stock.</footnote>
        <footnote id="F4">RSUs vest one year from the date of the grant subject to the reporting person's continued service with Kforce Inc. as of the vesting date. Dividend equivalent rights accrue with respect to these RSUs when and as dividends are paid on Kforce Inc. common stock.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Susan A. Gager, Attorney-in-Fact for Ralph Struzziero</signatureName>
        <signatureDate>2020-11-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
