GATX CORP — Director's Dealing 2011

May 10, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2011-05-06

Reporting Person: GLENN CURT F (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-06	Common Stock	M	3000	$21.85	Acquired	14153.1088	Direct
2011-05-06	Common Stock	S	200	$41.69	Disposed	13953.1088	Direct
2011-05-06	Common Stock	S	237	$41.66	Disposed	13716.1088	Direct
2011-05-06	Common Stock	S	221	$41.68	Disposed	13495.1088	Direct
2011-05-06	Common Stock	S	484	$41.7	Disposed	13011.1088	Direct
2011-05-06	Common Stock	S	600	$41.71	Disposed	12411.1088	Direct
2011-05-06	Common Stock	S	430	$41.72	Disposed	11981.1088	Direct
2011-05-06	Common Stock	S	200	$41.73	Disposed	11781.1088	Direct
2011-05-06	Common Stock	S	179	$41.75	Disposed	11602.1088	Direct
2011-05-06	Common Stock	S	100	$41.76	Disposed	11502.1088	Direct
2011-05-06	Common Stock	S	338	$41.77	Disposed	11164.1088	Direct
2011-05-06	Common Stock	S	11	$41.8	Disposed	11153.1088	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-06	2003 NQ Stock Option (Right to Buy)	$21.85	M	3000	Disposed	2013-08-01	Common Stock (3000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock 401(k)	9822.507	Indirect