EXHIBIT 99.4 REVOCABLE PROXY Pinnacle Banc Group, Inc. Special Meeting of Stockholders The undersigned hereby appoints William J. Finn and James L. Greene, or either or both of them, of Pinnacle Banc Group, Inc. ("Pinnacle"), with full power of substitution, to act as attorneys and proxies for the undersigned to vote all shares of common stock of Pinnacle that the undersigned is entitled to vote at Pinnacle's Special Meeting of Stockholders (the "Meeting"), to be held on ___________, ____, 1999, at _____________________, located at ______________________________, Oak Brook, Illinois, at ________ p.m., local time, and any and all adjournments and postponements thereof, as follows: The approval and adoption of the Agreement and Plan of Merger, dated as of March 18, 1999 (the "Merger Agreement"), between Pinnacle Banc Group, Inc., Old Kent Financial Corporation and OKFC Merger Corporation. [ ] FOR [ ] AGAINST [ ] ABSTAIN The Board of Directors recommends a vote "FOR" approval and adoption of the Merger Agreement. THIS PROXY WILL BE VOTED AS DIRECTED, BUT IF NO INSTRUCTIONS ARE SPECIFIED, THIS PROXY WILL BE VOTED FOR APPROVAL AND ADOPTION OF THE MERGER AGREEMENT. IF ANY OTHER BUSINESS IS PRESENTED AT THE MEETING, THIS PROXY WILL BE VOTED BY THOSE NAMED IN THIS PROXY IN THEIR BEST JUDGMENT. AT THE PRESENT TIME, THE BOARD OF DIRECTORS KNOWS OF NO OTHER BUSINESS TO BE PRESENTED AT THE MEETING. THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS This proxy may be revoked at any time before it is voted by: (i) filing with the Secretary of Pinnacle at or before the Meeting a written notice of revocation bearing a later date than this proxy; (ii) duly executing a subsequent proxy relating to the same shares and delivering it to the Secretary of Pinnacle at or before the Special Meeting; or (iii) attending the Special Meeting and voting in person (although attendance at the Special Meeting will not in and of itself constitute revocation of this proxy). If this proxy is properly revoked as described above, then the power of such attorneys and proxies shall be deemed terminated and of no further force and effect. The undersigned acknowledges receipt from Pinnacle, prior to the execution of this proxy, of Notice of the Special Meeting and a Prospectus and Proxy Statement. Date:______________________, 1999 ____________________________________ PRINT NAME OF STOCKHOLDER ____________________________________ SIGNATURE OF STOCKHOLDER ____________________________________ PRINT NAME OF STOCKHOLDER ____________________________________ SIGNATURE OF STOCKHOLDER Please sign exactly as your name appears on this card. When signing at attorney, executor, administrator, trustee or guardian, please give your full title. If shares are held jointly, each holder should sign. ________________________________________________________________ PLEASE PROMPTLY COMPLETE, DATE, SIGN AND MAIL THIS PROXY IN THE ENCLOSED POSTAGE-PAID ENVELOPE ________________________________________________________________