GATX CORP — Director's Dealing 2005

Apr 26, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2005-04-25

Reporting Person: ZECH RONALD H (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-04-25	Common Stock	M	60000	$24.9063	Acquired	148688.03	Direct
2005-04-25	Common Stock	S	20000	$33.8745	Disposed	128688.03	Direct
2005-04-25	Common Stock	S	20000	$33.9842	Disposed	108688.03	Direct
2005-04-25	Common Stock	S	20000	$34.1297	Disposed	88688.03	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-04-25	1996 NQ Stock Option (Right to Buy)	$24.9063	M	60000	Disposed	2006-01-02	Common Stock (60000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock 401(k)	21515.42	Indirect

Footnotes

F1: 50% of option granted may be exercised commencing 1 year from the date of the grant, an additional 25% commencing 2 years from the date of the grant and the remaining 25% commencing 3 years from the date of the grant.