GATX CORP — Director's Dealing 2006

Feb 13, 2006

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2005-12-31

Reporting Person: MUCKIAN WILLIAM M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-12-31	Common Stock 401(k)	J	105.463	$36.08	Acquired	4503.968	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5558	Direct

Footnotes

F1: Includes 23.9461 shares acquired through the Employee Stock Purchase Plan

F2: Reflects a payment in cash in lieu of fractional share.

F3: These shares were acquired during the fiscal year (1/1-12/31) pursuant to the GATX 401(k) plan.

F4: The price of the stock is based on the closing price on 12/30.