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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Cd5m7iCT341zhmVcwfvmjzPE2noo2hbp9YagZdG6q/t44l+ruKiuly15K3OAJNAW
 IME9E1Q9evfF7u1TQrnV1A==

<SEC-DOCUMENT>0001209191-03-020958.txt : 20030910
<SEC-HEADER>0001209191-03-020958.hdr.sgml : 20030910
<ACCEPTANCE-DATETIME>20030910144718
ACCESSION NUMBER:		0001209191-03-020958
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030909
FILED AS OF DATE:		20030910

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BUTLER FRANK
		CENTRAL INDEX KEY:			0001135447

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12515
		FILM NUMBER:		03889812

	BUSINESS ADDRESS:	
		STREET 1:		C/O OM GROUP INC
		STREET 2:		50 PUBLIC SQUARE SUITE 3500
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44113
		BUSINESS PHONE:		2167810083

	MAIL ADDRESS:	
		STREET 1:		C/O OM GROUP INC
		STREET 2:		50 PUBLIC SQUARE SUITE 3500
		CITY:			CLEVELAND
		STATE:			OH
		ZIP:			44113
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>bcl03007_bcl1fb.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-09-09</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000899723</issuerCik><issuerName>OM GROUP INC</issuerName>        <issuerTradingSymbol>OMG</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001135447</rptOwnerCik><rptOwnerName>BUTLER FRANK</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><nonDerivativeTable><nonDerivativeTransaction><securit
yTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-09-09</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>P</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>400</value></transactionShares><transactionPricePerShare><value>15.09</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>400</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><ownerSignature><signatureName>/s/ Paul Schulz, Attorney-in-Fact</signatureName><signatureDate>2003-09-10</signatureDate></ownerSignature></ownershipDocument>

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