X0202 4 2006-01-30 true 0000040211 GATX CORP GMT 0001204371 CIANCIO RONALD J 500 W. MONROE ST. CHICAGO IL 60661 false true false false Executive Counsel Common Stock 7038 D Common Stock 401(k) 2006-01-30 4 I false 7431 39.54 D 0 I 401(k) Plan Between April 28, 2005 and January 30, 2006, the reporting person acquired 213 shares under the GATX Corporation 401(k) plan not previously reported. This information is based on plan information dated as of January 30, 2006. Transfer of 401(k) funds from GATX stock to another available investment alternative. Lisa M. Ibarra, by Power of Attorney on behalf of Ronald J. Ciancio 2006-02-01