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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 DwniNqTZO0VatWAL9k9nL7lowD2uLi732Z6b0JK0bOSZZMia/eVCMDZwcTt8kO1k
 yg3osLEBgwIWOZ3KMatk+w==

<SEC-DOCUMENT>0001209191-03-034819.txt : 20031212
<SEC-HEADER>0001209191-03-034819.hdr.sgml : 20031212
<ACCEPTANCE-DATETIME>20031212165725
ACCESSION NUMBER:		0001209191-03-034819
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031210
FILED AS OF DATE:		20031212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REIDY WILLIAM J
		CENTRAL INDEX KEY:			0001273173

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12515
		FILM NUMBER:		031052384

	MAIL ADDRESS:	
		STREET 1:		25984 HILLIARD RD
		CITY:			WESTLAKE
		STATE:			OH
		ZIP:			44145

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OM GROUP INC
		CENTRAL INDEX KEY:			0000899723
		STANDARD INDUSTRIAL CLASSIFICATION:	SECONDARY SMELTING & REFINING OF NONFERROUS METALS [3341]
		IRS NUMBER:				521736882
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		50 PUBLIC SQ
		STREET 2:		STE 3500
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44113
		BUSINESS PHONE:		2167810083

	MAIL ADDRESS:	
		STREET 1:		50 PUBLIC SQ
		STREET 2:		STE 3500
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44113
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>bcl04601_bcl1wr.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-12-10</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000899723</issuerCik><issuerName>OM GROUP INC</issuerName>        <issuerTradingSymbol>OMG</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001273173</rptOwnerCik><rptOwnerName>REIDY WILLIAM J</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>127 PUBLIC SQUARE</rptOwnerStreet1><rptOwnerStreet2>1500 KEY TOWER</rptOwnerStreet2><rptOwnerCity>CLEVELAND</rptOwnerCity><rptOwnerState>OH</rptOwnerState><rptOwnerZipCode>44114</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securityTi
tle><value>Director Stock Option</value></securityTitle><conversionOrExercisePrice><value>17.41</value></conversionOrExercisePrice><transactionDate><value>2003-12-10</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>2220</value></transactionShares><transactionPricePerShare><value>17.41</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-06-10</value></exerciseDate><expirationDate><value>2013-12-10</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Director Stock Option</value></underlyingSecurityTitle><underlyingSecurityShares><value>2220</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2220</value></sharesOwnedFollowingTransa
ction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><ownerSignature><signatureName>Paul Schulz, Attorney-in-Fact</signatureName><signatureDate>2003-12-12</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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