GATX CORP — Director's Dealing 2013

Feb 12, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2013-02-08

Reporting Person: MUCKIAN WILLIAM M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-08	Common Stock	S	100	$48.61	Disposed	12420	Direct
2013-02-08	Common Stock	S	100	$48.62	Disposed	12320	Direct
2013-02-08	Common Stock	S	100	$48.64	Disposed	12220	Direct
2013-02-08	Common Stock	S	100	$48.66	Disposed	12120	Direct
2013-02-08	Common Stock	S	43	$48.68	Disposed	12077	Direct
2013-02-08	Common Stock	S	100	$48.71	Disposed	11977	Direct
2013-02-08	Common Stock	S	300	$48.72	Disposed	11677	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock 401(k)	5559.599	Indirect

Footnotes

F1: GATX Corporation's 401(k) plan is a unitized stock fund made up of company stock plus short term investments. Because the fund includes more than company stock, participants purchase units of the fund rather than company shares of stock. The number of units held by a participant may vary depending on the performance of the company stock, the overall stock market, and the amount of short term investments in the fund. Such a variance has caused the value of the units in the reporting person's 401(k) fund to be reduced without any actual disposition of shares.