GATX CORP — Director's Dealing 2004

Aug 10, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2004-08-06

Reporting Person: MUCKIAN WILLIAM M (Vice President-Controller)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-08-06	2004 NQ Stock Option (Right to Buy)	$24.365	A	4900	Acquired	2011-08-06	Common Stock (4900)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1029.28	Direct
Common Stock - 401(k)	4099.21	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 th
e date of the grant and the remaining 25% commencing 3 years from the date of the grant.