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): August 12, 2002 BANK ONE CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-15323 31-0738296 (State or other jurisdiction (Commission File Number) (IRS Employer of incorporation) Identification No.) 1 Bank One Plaza, Chicago, IL 60670 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: 312-732-4000 Item 7. Financial Statements, Pro Forma Financial Information and Exhibits ------ (c) Exhibits. Exhibit Number Description of Exhibits -------------- ----------------------- 99(a) Statement of principal executive officer of Registrant, delivered to the Commission pursuant to the Commission's Order No. 4-460, dated August 12, 2002. 99(b) Statement of principal financial officer of Registrant, delivered to the Commission pursuant to the Commission's Order No. 4-460, dated August 12, 2002. Item 9. Regulation FD Disclosure ------ On August 12, 2002, pursuant to Securities and Exchange Commission Order No. 4-460, the Registrant delivered the sworn statements required pursuant to such order to the Secretary of the Commission. A copy of each statement, made by the principal executive officer and the principal financial officer of the Registrant, is attached as Exhibit 99(a) and 99(b), respectively, to this Current Report on Form 8-K and incorporated by reference herein. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. BANK ONE CORPORATION (Registrant) Date: August 12, 2002 By: /s/ Heidi Miller -------------------- ------------------------- Title: Chief Financial Officer - 2 - EXHIBIT INDEX Exhibit Number Description of Exhibits -------------- ----------------------- 99(a) Statement of principal executive officer of Registrant, delivered to the Commission pursuant to the Commission's Order No. 4-460, dated August 12, 2002. 99(b) Statement of principal financial officer of Registrant, delivered to the Commission pursuant to the Commission's Order No. 4-460, dated August 12, 2002. - 3 -