GATX CORP — Director's Dealing 2011

May 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2011-04-28

Reporting Person: HASEK WILLIAM J (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-04-28	Common Stock	M	3933	$16.685	Acquired	13289	Direct
2011-04-28	Common Stock	F	2308	$42.01	Disposed	10981	Direct
2011-04-29	Common Stock	M	4600	$32.645	Acquired	15581	Direct
2011-04-29	Common Stock	S	300	$41.96	Disposed	15281	Direct
2011-04-29	Common Stock	S	600	$41.97	Disposed	14681	Direct
2011-04-29	Common Stock	S	200	$41.98	Disposed	14481	Direct
2011-04-29	Common Stock	S	1900	$42	Disposed	12581	Direct
2011-04-29	Common Stock	S	300	$42.03	Disposed	12281	Direct
2011-04-29	Common Stock	S	1171	$42.04	Disposed	11110	Direct
2011-04-29	Common Stock	S	54	$42.045	Disposed	11056	Direct
2011-04-29	Common Stock	S	1700	$42.05	Disposed	9356	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-04-28	Stock-Settled Stock Appreciation Right	$16.685	M	3933	Disposed	2016-03-04	Common Stock (3933)	Direct
2011-04-29	2005 NQ Stock Option (Right to Buy)	$32.645	M	4600	Disposed	2012-03-25	Common Stock (4600)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock 401(k)	660.841	Indirect