UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ( ) Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instructions 1(b). 1. Name and Address of Reporting Person Markku Toivanen c/o Outokumpu Oy Miniatokuja 1 C 18 FIN-02369, Espoo Finland , Fin-02101 2. Issuer Name and Ticker or Trading Symbol OM Group, Inc. (OMGI) 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year 2/2001 5. If Amendment, Date of Original (Month/Year) 2/2001 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) (X) Director ( ) 10% Owner ( ) Officer (give title below) ( ) Other (specify below) Director 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person

Explanation of Responses: 1. Exercise of Grant of 5/9/95, 3,707 Shares, Exercise Price $16.59 Adjusted for December 1996 3 for 2 Split. 2. Exercise of Grant of 6/30/96, 2,367 Shares, Exercise Price $25.97 Adjusted For December 1996 3 For 2 Split.

OM GROUP INC 4