GATX CORP - Director's Dealing 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2011-04-26

Reporting Person: Porzenheim Clifford J (N/A)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-04-26	Common Stock	M	7000	$39.145	Acquired	24062.263	Direct
2011-04-26	Common Stock	M	2000	$31.735	Acquired	26062.263	Direct
2011-04-26	Common Stock	M	3000	$21.85	Acquired	29062.263	Direct
2011-04-26	Common Stock	M	2500	$24.365	Acquired	31562.263	Direct
2011-04-26	Common Stock	S	100	$41.38	Disposed	31462.263	Direct
2011-04-26	Common Stock	S	400	$41.39	Disposed	31062.263	Direct
2011-04-26	Common Stock	S	776	$41.3901	Disposed	30286.263	Direct
2011-04-26	Common Stock	S	500	$41.4	Disposed	29786.263	Direct
2011-04-26	Common Stock	S	400	$41.41	Disposed	29386.263	Direct
2011-04-26	Common Stock	S	1700	$41.42	Disposed	27686.263	Direct
2011-04-26	Common Stock	S	1700	$41.43	Disposed	25986.263	Direct
2011-04-26	Common Stock	S	100	$41.44	Disposed	25886.263	Direct
2011-04-26	Common Stock	S	600	$41.45	Disposed	25286.263	Direct
2011-04-26	Common Stock	S	1000	$41.46	Disposed	24286.263	Direct
2011-04-26	Common Stock	S	100	$41.465	Disposed	24186.263	Direct
2011-04-26	Common Stock	S	809	$41.47	Disposed	23377.263	Direct
2011-04-26	Common Stock	S	300	$41.475	Disposed	23077.263	Direct
2011-04-26	Common Stock	S	600	$41.48	Disposed	22477.263	Direct
2011-04-26	Common Stock	S	300	$41.485	Disposed	22177.263	Direct
2011-04-26	Common Stock	S	1515	$41.49	Disposed	20662.263	Direct
2011-04-26	Common Stock	S	3100	$41.5	Disposed	17562.263	Direct
2011-04-26	Common Stock	S	500	$41.51	Disposed	17062.263	Direct
2011-04-27	Common Stock 401(k)	I	5226.128	$41.67	Disposed	12194.299	Indirect

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-04-26	2001 NQ Stock Option (Right to Buy)	$39.145	M	7000	Disposed	2011-07-27	Common Stock (7000)	Direct
2011-04-26	2002 NQ Stock Option (Right to Buy)	$31.735	M	2000	Disposed	2012-04-26	Common Stock (2000)	Direct
2011-04-26	2003 NQ Stock Option (Right to Buy)	$21.85	M	3000	Disposed	2013-08-01	Common Stock (3000)	Direct
2011-04-26	2004 NQ Stock Option (Right to Buy)	$24.365	M	2500	Disposed	2011-08-06	Common Stock (2500)	Direct

F1: Transfer of 401k funds from GATX stock to another available investment alternative