SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 14, 2000 Commission Registrant; State of Incorporation; IRS Employer File Number Address; and Telephone Number Identification No. 1-11375 UNICOM CORPORATION 36-3961038 (an Illinois corporation) 37th Floor, 10 South Dearborn Street Post Office Box A-3005 Chicago, Illinois 60690-3005 312/394-7399 1-1839 COMMONWEALTH EDISON COMPANY 36-0938600 (an Illinois corporation) 37th Floor, 10 South Dearborn Street Post Office Box 767 Chicago, Illinois 60690-0767 312/394-4321 Item 5. Other Events On April 14, 2000, Unicom issued a news release announcing its earnings for the first quarter of 2000 and its expected transmission and distribution expenditures for the year 2000. The news release is attached hereto as Exhibit 99 and is hereby incorporated by reference. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized. UNICOM CORPORATION (Registrant) Date: May 8, 2000 By: Ruth Ann M. Gillis ------------------------ Ruth Ann M. Gillis Senior Vice President COMMONWEALTH EDISON COMPANY (Registrant) Date: May 8, 2000 By: Ruth Ann M. Gillis ------------------------- Ruth Ann M. Gillis Senior Vice President EXHIBIT INDEX Exhibit Number Description of Exhibit 1. None 2. None 4. None 16. None 17. None 20. None 23. None 24. None 27. None 99. News release dated April 14, 2000 issued by Unicom Corporation