UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ( ) Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instructions 1(b). 1. Name and Address of Reporting Person David C. Novak Yum! Brands, Inc. P. O. Box 32220 KY, Louisville 40232 2. Issuer Name and Ticker or Trading Symbol BANK ONE CORPORATION (ONE) 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Day/Year 4/15/2003 5. If Amendment, Date of Original (Month/Day/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) (X) Director ( ) 10% Owner ( ) Officer (give title below) ( ) Other (specify below) 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person ___________________________________________________________________________________________________________________________________ Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned | ___________________________________________________________________________________________________________________________________| 1. Title of Security|2. |2A. |3. |4.Securities Acquired (A) |5.Amount of |6.Dir |7.Nature of Indirect | |Trans-|Exec- |Trans | or Disposed of (D) | Securities |ect | Beneficial Ownership | |action|ution |action| | Beneficially |(D)or | | | | | | | | A/| | Owned Following |Indir | | |Date | Date |Code|V| Amount | D | Price | Reported Trans(s)|ect(I)| | ___________________________________________________________________________________________________________________________________| Common Stock | | | | | | | |15924 |D | | -----------------------------------------------------------------------------------------------------------------------------------| ___________________________________________________________________________________________________________________________________| ___________________________________________________________________________________________________________________________________| Table II -- Derivative Securitites Acquired, Disposed of, or Beneficially Owned | ___________________________________________________________________________________________________________________________________| 1.Title of |2.Con- |3. |3A. |4. |5.Number of De |6.Date Exer|7.Title and Amount |8.Price|9.Number |10.|11.Nature of| Derivative |version |Trans- |Deemed|Trans-| rivative Secu |cisable and| of Underlying |of Deri|of Deriva |Dir|Indirect | Security |or Exer |action | |action| rities Acqui |Expiration | Securities |vative |tive |ect|Beneficial | |cise | |Execu-| | red(A) or Dis |Date(Month/| |Secu |Securities |(D)|Ownership | |Price of| |ution | | posed of(D) |Day/Year) | |rity |Benefi |or | | |Deriva- | | | | |Date |Expir| | |ficially |Ind| | |tive | | | | | A/|Exer-|ation| Title and Number | |Owned Follow|ire| | |Secu- |(Month/|(Month| | | | D |cisa-|Date | of Shares | |ing Reported|ct | | |rity |Day/ |/Day/ |Code|V| Amount | |ble | | | |Trans- |(I)| | | |Year) |Year) | | | | | | | | |action(s) | | | ___________________________________________________________________________________________________________________________________| Director Stoc|$36.85 |4/15/ 2| |A | |2000 |A |10/15|4/15/|Common Stock|2000 | |2000 |D | | k Option (Rig| |003 | | | | | |/2003|09 | | | | | | | ht to Buy) | | | | | | | | | | | | | | | | -----------------------------------------------------------------------------------------------------------------------------------| Director Stoc|$36.75 | | | | | | | |05/15|Common Stock| | |5000 |D | | k Option (rig| | | | | | | | |/11 | | | | | | | ht to buy) | | | | | | | | | | | | | | | | -----------------------------------------------------------------------------------------------------------------------------------| Director Stoc|$41.21 | | | | | | | |04/16|Common Stock| | |2000 |D | | k Option (rig| | | | | | | | |/2012| | | | | | | ht to buy) | | | | | | | | | | | | | | | | -----------------------------------------------------------------------------------------------------------------------------------| Stock Units |1 | | |1 | | | |1 |1 |Common Stock| | |4458 |D | | -----------------------------------------------------------------------------------------------------------------------------------| | | | | | | | | | | | | | | | | ___________________________________________________________________________________________________________________________________| Explanation of Responses: 1. Stock units granted under the Corporation's Director Stock Plan. Each unit represents the right to receive a share of the Corporation's common stock after Reporting Person's retirement, on a 1 for 1 basis, and dividend equivalent rights which will be reinvested in additional stock units. SIGNATURE OF REPORTING PERSON David C. Novak DAVID C. NOVAK Laurence Goldman, Attorney-In-Fact