UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): March 8, 2013

GATX Corporation
(Exact name of registrant as specified in its charter)
                                    
New York             1-2328                 36-1124040
(State or other jurisdiction of        (Commission File             (IRS Employer
incorporation)             Number)                Identification No.)

222 West Adams Street
Chicago, Illinois 60606-5314
(Address of principal executive offices, including zip code)

(312) 621-6200
(Registrant's telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the obligation of the registrant under any of the following provisions:
[] Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))






Item 5.02
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On March 8, 2013, Nicholas J. Matthews, Vice President and Group Executive, Operations of GATX Corporation (the “Company”) tendered his resignation from all of his positions with the Company and its subsidiaries, effective immediately.
    






SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

                                    
GATX CORPORATION
(Registrant)
 
/s/ Robert C. Lyons
Robert C. Lyons
Executive Vice President, Chief Financial Officer
March 12, 2013