GATX CORP — Director's Dealing 2007

May 3, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GATX CORP (GMT)
CIK: 0000040211
Period of Report: 2007-05-01

Reporting Person: McGrath Mark G (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-01	Common Stock	A	744.014	$49.815	Acquired	6318.5297	Direct

Footnotes

F1: Includes 17.6664 shares acquired pursuant to a dividend reinvestment feature of the GATX Phantom Stock Plan and 13.7108 shares acquired pursuant to a dividend reinvestment feature of the Deferred Fee Plan.

F2: Includes that portion of (a) the quarterly payment of the annual directors' fee (326.2070 shares) credited to an account established for each director under the GATX Directors' Phantom Stock Plan ("Phantom Stock Plan") and (b) the annual retainer and meeting fee (386.4298 shares) which the reporting person elected to invest in units of phantom stock under the Directors' Deferred Fee Plan ("Deferred Fee Plan"), which in each case will be settled in common stock upon the expiration of the director's service on the Board.