EXHIBIT 99.2 AMENDMENT NO. 1 TO STOCK PURCHASE AGREEMENT Amendment No. 1, dated November 30, 2004, to the Stock Purchase Agreement, dated as of September 17, 2004 (as amended from time to time, the "Purchase Agreement"), by and among American Physicians Assurance Corporation (the "Purchaser") and the shareholders listed on Exhibit 1 thereto (collectively, the "Sellers"). WHEREAS, the undersigned Northpoint Medical Group, Ltd. (the "New Seller") was not an original party to the Purchase Agreement but now desires to become a party thereto; and WHEREAS, the Purchaser and the Sellers desire that the New Seller become a party to the Purchase Agreement; NOW, THEREFORE, in consideration of the foregoing and the representations, warranties, covenants and agreements set forth herein and in the Purchase Agreement, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties, intending to be legally bound hereby, agree as follows: 1. The New Seller hereby confirms that it has received a copy of the Purchase Agreement and the exhibits referred to therein, and all other documents which it considers necessary to make an informed decision to sell its shares of Common Stock to Purchaser. 2. As of the date hereof, following execution of this Amendment No. 1 pursuant to Section 7.2 of the Purchase Agreement, the New Seller (a) shall be deemed automatically to have become a "Seller" (as that term is used in the Purchase Agreement) and a party to the Purchase Agreement, and to have all the rights and obligations of a party to the Purchase Agreement as if it were an original signatory thereto; and (b) agrees to be bound by the terms and conditions set forth in the Purchase Agreement as if it were an original signatory thereto. 3. Notwithstanding any provision in Article 2 of the Purchase Agreement to the contrary, the New Seller shall be deemed to make the representations and warranties in Article 2 of the Purchase Agreement as of the date of this Amendment No. 1 and as of the Closing Date; provided that the words "and in good standing" in the second sentence of Section 2.1 of the Purchase Agreement shall have no effect with respect to New Seller, it being understood by the parties hereto that New Seller has been administratively dissolved. 4. Exhibit 1 is hereby amended and restated in the form attached hereto. 5. Terms defined in the Purchase Agreement and not otherwise defined herein shall have their defined meanings when used herein. 6. Except as specifically set forth above, this Amendment No. 1 shall not be deemed to amend the terms and conditions of the Purchase Agreement in any respect. 7. This Amendment No. 1 may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 1 to be signed by their respective officers thereunto duly authorized as of the date first written above. SELLERS: PURCHASER: AMERICAN PHYSICIANS DEAN HEALTH SYSTEMS, INC. ASSURANCE CORPORATION By: /s/ Allen D. Kemp MD By: /s/ R. Kevin Clinton ---------------------------------- -------------------------------- Name and Title: Allen D. Kemp MD, Name and Title: R. Kevin Clinton, CEO and Chairman of the Board President and CEO MERCY HEALTH SYSTEM NEW SELLER: CORPORATION NORTHPOINT MEDICAL GROUP, LTD. By: /s/ Joseph Nemeth By: /s/ Anthony Linn ---------------------------------- -------------------------------- Name and Title: Joseph Nemeth, Name and Title: Anthony Linn, Vice President President DAVID H. MOSS, FOR HIMSELF, AS CUSTODIAN FOR STARR H. MOSS UWIUTMA AND AS TRUSTEE FOR EMERGENCY RESOURCES GROUP 401(K) PLAN /s/ David H. Moss - --------------------------------- David H. Moss AURORA MEDICAL GROUP, INC. By: /s/ Elliott J. Huxley MD ---------------------------------- Name and Title: Elliott J. Huxley MD, President THE MONROE CLINIC, INC. By: /s/ Julie Wilke ---------------------------------- Name and Title: Julie Wilke, Vice President/CFO EXHIBIT 1 (AS AMENDED AND RESTATED NOVEMBER 30, 2004) PHYSICIAN INSURANCE COMPANY OF WISCONSIN, INC. STOCK CERTIFICATES - ---------------------------------------------------------------------------------------------------------------------- SELLER/BENEFICIAL OWNERSHIP CERTIFICATE NAME ON CERTIFICATE NO. OF DATE ISSUED NO. (IF DIFFERENT) SHARES - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- Dean Health Systems, Inc. 5173 Same 1,111 07/01/2000 1808 W. Beltline Hwy. Madison, WI 53713 Attention: Thomas Kirschbaum 5174 " 900 07/01/2000 TOTAL DEAN HEALTH SYSTEMS 2,011 With a copy to: Whyte, Hirschboeck Dudek S.C. 555 East Wells Street Suite 1900 Milwaukee, WI 53202 Attention: Andrew J. Guzikowski - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- Mercy Health System Corporation 327 Janesville Medical 78 12/04/1986 1000 Mineral Point, Center, Ltd. Janesville, WI 53545 Attention: Ralph Topinka *Lost certificate 1269 " 1 10/16/1987 2067 " 76 03/02/1988 2501 " 3 07/28/1988 2649 " 1 09/19/1988 2986 " 66 12/29/1988 3734 " 5 04/06/1989 4197 " 7 01/16/1990 2594* " 1 ?* 2678* " 2 ?* TOTAL MERCY HEALTH SYSTEM CORPORATION 240 - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- SELLER/BENEFICIAL OWNERSHIP CERTIFICATE NAME ON CERTIFICATE NO. OF DATE ISSUED NO. (IF DIFFERENT) SHARES - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- David H. Moss, M.D. 4668 David Moss, M.D. 15 12/11/1995 5770 N. Shore Dr. Milwaukee, WI 53217 5179 David H. Moss, M.D. 224 03/09/2201 5200 " 3 09/04/2001 5201 David H. Moss, M.D., 9 09/04/2001 Custodian for Starr H. Moss 5258 UWIUTMA David Moss, MD, 263 09/30/2003 Trustee, Emergency Resources Group 401(k) Plan TOTAL DAVID MOSS 514 - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- Aurora Medical Group, Inc. 4494 Same 74 01/11/1993 3000 W. Montana St. Milwaukee, WI 53215 Attention: Robert O'Keefe 4474 " 428 01/22/1993 4478 " 25 04/13/1993 4498 " 152 03/08/1994 4507 " 63 06/07/1994 4506 " 24 07/07/1994 4641 " 70 07/13/1995 4666 " 130 11/17/1995 4689 " 153 05/02/1996 4690 " 8 05/02/1996 4708 " 21 11/04/1996 4709 " 8 11/04/1996 4726 " 137 03/03/1997 TOTAL AURORA MEDICAL GROUP 1,293 - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- SELLER/BENEFICIAL OWNERSHIP CERTIFICATE NAME ON CERTIFICATE NO. OF DATE ISSUED NO. (IF DIFFERENT) SHARES - ---------------------------------------------------------------------------------------------------------------------- The Monroe Clinic, Inc. 4806 Same 392 06/01/1998 515 22nd Ave. Monroe, WI 53566 Attention: Mike Sanders TOTAL MONROE CLINIC 392 With a copy to: Attorney Thomas R. Streifender Von Briesen & Roper SC 411 E. Wisconsin Ave. PO Box 3262 Milwaukee, WI 53201-3262 - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- Northpoint Medical Group, Ltd. ?* Same ?* ?* 2388 N. Lake Drive Milwaukee, WI 53211 Attention: Anthony Linn, M.D. (Personal and Confidential) TOTAL NORTHPOINT MEDICAL GROUP, LTD. 332 *Lost Certificate With a copy to: Attorney Donal M. Demet Demet & Demet, S.C. 815 North Cass Street Milwaukee, WI 53202-3908 - ---------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------- GRAND TOTAL 4,782 - ----------------------------------------------------------------------------------------------------------------------