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 Instruction 1(b). Filed Pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940 1. Name and Address of Reporting Person Machulak, Edward L. 903 West Green Tree Road River Hills, Wisconsin 53217 2. Issuer Name and Ticker or Trading Symbol Commerce Group Corp. Boston Stock Exchange: CMG.BN; OTCBB: CGCO 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year December/2002 5. If Amendment, Date of Original (Month/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) (X) Director (X) 10% Owner (X) Officer (give title below) ( ) Other (specify below) Chairman of the Board of Directors, President & Treasurer 7. Individual or Joint/Group Filing (Check Applicable Line) ( ) Form filed by One Reporting Person (X) Form filed by More than One Reporting Person

Explanation of Responses: (1) The common shares, option, and convertible shares are owned by a corporation in which Edward L. Machulak owns 54.71% of the common shares issued and outstanding. (2) Anytime through July 2, 2003 SIGNATURE OF REPORTING PERSON Edward L. Machulak DATE December 9, 2002

COMMERCE GROUP CORP /WI/ 4