-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 AxROxGEcUOxt+5JzqmVJ/fol4A2A3UqsMfqW5lZN6WE5Q8DnoPJCEMcAnrpxA3Ld
 TN3liIPDG5lspeOYQmocbg==

<SEC-DOCUMENT>0000950103-07-001824.txt : 20070719
<SEC-HEADER>0000950103-07-001824.hdr.sgml : 20070719
<ACCEPTANCE-DATETIME>20070719190048
ACCESSION NUMBER:		0000950103-07-001824
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070717
FILED AS OF DATE:		20070719
DATE AS OF CHANGE:		20070719

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GSC INVESTMENT CORP.
		CENTRAL INDEX KEY:			0001377936
		IRS NUMBER:				204876925
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		12 EAST 49TH STREET
		STREET 2:		SUITE 3200
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
		BUSINESS PHONE:		212 884 6200

	MAIL ADDRESS:	
		STREET 1:		12 EAST 49TH STREET
		STREET 2:		SUITE 3200
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GSC Investment LLC
		DATE OF NAME CHANGE:	20061011

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Thompson David B JR
		CENTRAL INDEX KEY:			0001395252

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33376
		FILM NUMBER:		07989955

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		212-884-6200

	MAIL ADDRESS:	
		STREET 1:		C/O GSC INVESTMENT CORP.
		STREET 2:		12 EAST 49TH STREET, SUITE 3200
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>dp06313_4-thompsonex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-07-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001377936</issuerCik>
        <issuerName>GSC INVESTMENT CORP.</issuerName>
        <issuerTradingSymbol>GNV</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001395252</rptOwnerCik>
            <rptOwnerName>Thompson David B JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GSC INVESTMENT CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>12 E. 49TH STREET, SUITE 3200</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP of CCG of GSC Group</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-07-17</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2007-07-17</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>750</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>13.379</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>750</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ David L. Goret, Attorney-in-Fact for David B. Thompson, Jr.</signatureName>
        <signatureDate>2007-07-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----