EXHIBIT 99.05 FOURTH AMENDMENT TO THE COMSHARE, INCORPORATED EMPLOYEE STOCK PURCHASE PLAN Pursuant to resolutions adopted by the Board of Directors of Comshare, Incorporated on June 26, 2001 and subject to shareholder approval at the Annual Meeting of Shareholders on November 19, 2001, the Comshare, Incorporated Employee Stock Purchase Plan (the "Plan") is amended as set forth below. Effective November 19, 2001, the second sentence in Section 3 of the Plan ("Stock") shall be amended and restated in its entirety to read as follows: The total of Common Stock on which options may be granted under the Plan shall not exceed 1,600,000 shares, subject to adjustment in accordance with Section 12. THIS FOURTH AMENDMENT to the Comshare, Incorporated Employee Stock Purchase Plan is hereby executed on this 18th day of October, 2001. COMSHARE, INCORPORATED By: /s/ Brian J. Jarzynski ----------------------------------- Brian J. Jarzynski, Vice President, Chief Financial Officer and Treasurer 9