-----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,
 Ln4HNb4Oxf1fkhyt8mhGP7xdOaSDIXo/sqKkjM96GBEWoSUtSW+oPGsAJMd3lx3/
 LSYmzbNkXcaYZNj+n1xrhQ==

<SEC-DOCUMENT>0000950103-06-000018.txt : 20060105
<SEC-HEADER>0000950103-06-000018.hdr.sgml : 20060105
<ACCEPTANCE-DATETIME>20060105122203
ACCESSION NUMBER:		0000950103-06-000018
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060103
FILED AS OF DATE:		20060105
DATE AS OF CHANGE:		20060105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KEY STEPHEN L
		CENTRAL INDEX KEY:			0001173262

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32147
		FILM NUMBER:		06511364

	BUSINESS ADDRESS:	
		STREET 1:		44 STIMSON AVE
		CITY:			PROVIDENCE
		STATE:			RI
		ZIP:			02906
		BUSINESS PHONE:		4015217444

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GREENHILL & CO INC
		CENTRAL INDEX KEY:			0001282977
		STANDARD INDUSTRIAL CLASSIFICATION:	FINANCE SERVICES [6199]
		IRS NUMBER:				510500737

	BUSINESS ADDRESS:	
		STREET 1:		300 PARK AVENUE
		STREET 2:		23RD FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212-389-1500

	MAIL ADDRESS:	
		STREET 1:		300 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>key_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-01-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001282977</issuerCik>
        <issuerName>GREENHILL &amp; CO INC</issuerName>
        <issuerTradingSymbol>GHL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001173262</rptOwnerCik>
            <rptOwnerName>KEY STEPHEN L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GREENHILL &amp; CO., INC.</rptOwnerStreet1>
            <rptOwnerStreet2>300 PARK AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</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>2006-01-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>178</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3659</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This award of stock was granted pursuant to the Greenhill &amp; Co., Inc. Equity Incentive Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Ulrika Ekman, Attorney-in-Fact for Stephen L. Key</signatureName>
        <signatureDate>2006-01-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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