-----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,
 MSCPhCmpwHYd0cUnRodOqlpUi69VRmhc/qAaouvmHUn+lwh+QsaPxnsVHNFboJVW
 k3vqq16j8B+TDPqcpzBeRQ==

<SEC-DOCUMENT>0000943374-07-001760.txt : 20071204
<SEC-HEADER>0000943374-07-001760.hdr.sgml : 20071204
<ACCEPTANCE-DATETIME>20071204154912
ACCESSION NUMBER:		0000943374-07-001760
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071203
FILED AS OF DATE:		20071204
DATE AS OF CHANGE:		20071204

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GREENE COUNTY BANCORP INC
		CENTRAL INDEX KEY:			0001070524
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
		IRS NUMBER:				141809721
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		302 MAIN STREET
		CITY:			CATSKILL
		STATE:			NY
		ZIP:			12414
		BUSINESS PHONE:		5189432600

	MAIL ADDRESS:	
		STREET 1:		302 MAIN STREET
		CITY:			CATSKILL
		STATE:			NY
		ZIP:			12414

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gibson Donald E
		CENTRAL INDEX KEY:			0001405640

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25165
		FILM NUMBER:		071283666

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(518) 943-2600

	MAIL ADDRESS:	
		STREET 1:		302 MAIN STREET
		CITY:			CATSKILL
		STATE:			NY
		ZIP:			12414
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4_gibson-120407ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-12-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001070524</issuerCik>
        <issuerName>GREENE COUNTY BANCORP INC</issuerName>
        <issuerTradingSymbol>GCBC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001405640</rptOwnerCik>
            <rptOwnerName>Gibson Donald E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>302 MAIN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CATSKILL</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>12414</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-12-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.50</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13513</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Donald E. Gibson</signatureName>
        <signatureDate>2007-12-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----