GATX CORP — Director's Dealing 2005

Aug 10, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2005-08-08

Reporting Person: DUDDY GAIL L (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-08-08	Common Stock	M	4058	$28.6875	Acquired	17152.94	Direct
2005-08-08	Common Stock	S	4058	$38.5	Disposed	13094.94	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-08-08	2000 NQ Exchange Stock Option (Right to Buy)	$28.6875	M	4058	Disposed	2010-01-28	Common Stock (4058)	Direct

Footnotes

F1: Under the terms of the GATX Corporation 1995 Long Term Incentive Compensation Plan, participants could defer a percentage of the bonus each would otherwise receive during the following year under the Managment Incentive Program. The deferred portion of the bonus could be exchanged for options at a price equal to 20% of the average price of GATX common stock on the date the options were granted.