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 Ronald L. Thompson Midwest Stamping 3455 Briarfield Road OH, Maumee 43537 2. Issuer Name and Ticker or Trading Symbol Ryerson Tull, Inc. (RT) 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Day/Year 12/31/2002 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

Explanation of Responses: 1. Exempt acquisition under Section 16b-3(d) of phantom stock units accrued as deferred compensation under the Ryerson Tull Directors' Compensation Plan and to be settled after the reporting person's termination of Board service. SIGNATURE OF REPORTING PERSON Ronald L. Thompson

THOMPSON RONALD L 4