-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 P42Qk68DwnMlzPNbslGD9/42SH2EmsPYtazSsddaJEf5dhvFkciOq/u22e68ktnO
 njlF1n2WmZHLzvBMqEpBbw==

<SEC-DOCUMENT>0001181431-07-042238.txt : 20070626
<SEC-HEADER>0001181431-07-042238.hdr.sgml : 20070626
<ACCEPTANCE-DATETIME>20070626200537
ACCESSION NUMBER:		0001181431-07-042238
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070626
FILED AS OF DATE:		20070626
DATE AS OF CHANGE:		20070626

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NightHawk Radiology Holdings Inc
		CENTRAL INDEX KEY:			0001292470
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MISC HEALTH & ALLIED SERVICES, NEC [8090]
		IRS NUMBER:				870722777

	BUSINESS ADDRESS:	
		STREET 1:		250 NORTHWEST BOULEVARD #202
		CITY:			COEUR D ALENE
		STATE:			ID
		ZIP:			83814
		BUSINESS PHONE:		208-292-2251

	MAIL ADDRESS:	
		STREET 1:		250 NORTHWEST BOULEVARD #202
		CITY:			COEUR D ALENE
		STATE:			ID
		ZIP:			83814

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ludy Ernest G
		CENTRAL INDEX KEY:			0001365497

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-51786
		FILM NUMBER:		07942261

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		415.331.3992

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 819
		CITY:			SAUSALITO
		STATE:			CA
		ZIP:			94966
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd164108.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-06-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001292470</issuerCik>
        <issuerName>NightHawk Radiology Holdings Inc</issuerName>
        <issuerTradingSymbol>NHWK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001365497</rptOwnerCik>
            <rptOwnerName>Ludy Ernest G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P.O. BOX 819</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAUSALITO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94966</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>2007-06-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10061</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10061</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-06-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10061</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-06-23</value>
            </exerciseDate>
            <expirationDate>
                <value>2007-06-23</value>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10061</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The shares of common stock were issued to the reporting person upon the vesting of restricted stock units previously held by the reporting person.</footnote>
        <footnote id="F2">Each Restricted Stock Unit represented a contingent right to receive one (1) share of NHWK Common Stock upon vesting.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Paul E. Cartee, Attorney-in-Fact</signatureName>
        <signatureDate>2007-06-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----