<SEC-DOCUMENT>0001140361-15-037901.txt : 20151016
<SEC-HEADER>0001140361-15-037901.hdr.sgml : 20151016
<ACCEPTANCE-DATETIME>20151016201201
ACCESSION NUMBER:		0001140361-15-037901
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20151014
FILED AS OF DATE:		20151016
DATE AS OF CHANGE:		20151016

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CAPITAL SOUTHWEST CORP
		CENTRAL INDEX KEY:			0000017313
		IRS NUMBER:				751072796
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		5400 LYNDON B. JOHNSON FREEWAY
		STREET 2:		SUITE 1300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240
		BUSINESS PHONE:		9722338242

	MAIL ADDRESS:	
		STREET 1:		5400 LYNDON B. JOHNSON FREEWAY
		STREET 2:		SUITE 1300
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75240

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Armes Joseph B
		CENTRAL INDEX KEY:			0001413614

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	814-00061
		FILM NUMBER:		151162848

	MAIL ADDRESS:	
		STREET 1:		100 CRESCENT COURT
		STREET 2:		SUITE 1200
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-10-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000017313</issuerCik>
        <issuerName>CAPITAL SOUTHWEST CORP</issuerName>
        <issuerTradingSymbol>CSWC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001413614</rptOwnerCik>
            <rptOwnerName>Armes Joseph B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CAPITAL SOUTHWEST CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>5400 LYNDON B. JOHNSON FREEWAY STE 1300</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75240</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.66</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-10-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>68</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-07-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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            <securityTitle>
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            <transactionDate>
                <value>2015-10-14</value>
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                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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            <expirationDate>
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            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>13445</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>11.53</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-10-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>352</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-08-28</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>352</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>85981</value>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents adjustments made pursuant to (1) the Amended and Restated Employee Matters Agreement, dated as of September 14, 2015, between the Issuer and CSW Industrials, Inc., and (2) the Issuer's 2009 Stock Incentive Plan, as amended, in connection with the Issuer's spin-off of CSW Industrials, Inc. on September 30, 2015.</footnote>
        <footnote id="F2">Two fifths of stock options are vested. The remaining three fifths will vest in three equal annual installments beginning July 15, 2016.</footnote>
        <footnote id="F3">On August 16, 2013, the common stock of the Issuer split four-for-one, resulting in the reporting person's ownership of stock options representing a right to purchase a total of 16,500 shares of common stock.</footnote>
        <footnote id="F4">On August 16, 2013, the common stock of the Issuer split four-for-one, resulting in the reporting person's ownership of stock options representing a right to purchase a total of 13,500 shares of common stock.</footnote>
        <footnote id="F5">One third of the stock options will vest on the 90th day following the spin-off (the &quot;Trigger Event Date&quot;), one third of the stock options with vest on the first anniversary of the Trigger Event Date and one third of the stock options will vest on the second anniversary of the Trigger Event Date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joseph B. Armes</signatureName>
        <signatureDate>2015-10-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
