GATX CORP — Director's Dealing 2011

May 6, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2011-05-04

Reporting Person: Earl James F (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-04	Common Stock	M	10300	$24.365	Acquired	37838.0685	Direct
2011-05-04	Common Stock	S	508	$41.55	Disposed	37330.0685	Direct
2011-05-04	Common Stock	S	433	$41.61	Disposed	36897.0685	Direct
2011-05-04	Common Stock	S	800	$41.6	Disposed	36097.0685	Direct
2011-05-04	Common Stock	S	617	$41.62	Disposed	35480.0685	Direct
2011-05-04	Common Stock	S	400	$41.63	Disposed	35080.0685	Direct
2011-05-04	Common Stock	S	500	$41.64	Disposed	34580.0685	Direct
2011-05-04	Common Stock	S	1131	$41.65	Disposed	33449.0685	Direct
2011-05-04	Common Stock	S	400	$41.66	Disposed	33049.0685	Direct
2011-05-04	Common Stock	S	300	$41.69	Disposed	32749.0685	Direct
2011-05-04	Common Stock	S	145	$41.7	Disposed	32604.0685	Direct
2011-05-04	Common Stock	S	100	$41.72	Disposed	32504.0685	Direct
2011-05-04	Common Stock	S	800	$41.73	Disposed	31704.0685	Direct
2011-05-04	Common Stock	S	216	$41.74	Disposed	31488.0685	Direct
2011-05-04	Common Stock	S	100	$41.745	Disposed	31388.0685	Direct
2011-05-04	Common Stock	S	150	$41.75	Disposed	31238.0685	Direct
2011-05-04	Common Stock	S	200	$41.76	Disposed	31038.0685	Direct
2011-05-04	Common Stock	S	300	$41.77	Disposed	30738.0685	Direct
2011-05-04	Common Stock	S	400	$41.78	Disposed	30338.0685	Direct
2011-05-04	Common Stock	S	200	$41.79	Disposed	30138.0685	Direct
2011-05-04	Common Stock	S	400	$41.82	Disposed	29738.0685	Direct
2011-05-04	Common Stock	S	100	$41.83	Disposed	29638.0685	Direct
2011-05-04	Common Stock	S	600	$41.85	Disposed	29038.0685	Direct
2011-05-04	Common Stock	S	100	$41.86	Disposed	28938.0685	Direct
2011-05-04	Common Stock	S	100	$41.87	Disposed	28838.0685	Direct
2011-05-04	Common Stock	S	100	$41.91	Disposed	28738.0685	Direct
2011-05-04	Common Stock	S	100	$41.98	Disposed	28638.0685	Direct
2011-05-04	Common Stock	S	400	$41.99	Disposed	28238.0685	Direct
2011-05-04	Common Stock	S	700	$42	Disposed	27538.0685	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-04	2004 NQ Stock Option (Right to Buy)	$24.365	M	10300	Disposed	2011-08-06	Common Stock (10300)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock 401(k)	8349.575	Indirect