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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 31, 2021
GATX Corporation
(Exact name of registrant as specified in its charter)
New York 1-2328 36-1124040
(State or other jurisdiction
of incorporation)
 (Commission
File Number)
 (IRS Employer
Identification No.)
233 South Wacker Drive
Chicago, Illinois 60606-7147
(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 filing 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))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of Each Exchange on Which Registered
Common StockGATXNew York Stock Exchange
Chicago Stock Exchange
5.625% Senior Notes due 2066GMTANew York Stock Exchange
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.



Item 7.01. Regulation FD Disclosure

The following information is furnished pursuant to "Regulation FD Disclosure". Neither this report nor information contained in Exhibit 99.1 shall be deemed "filed" for purposes of section 18 of the Securities and Exchange Act of 1934, as amended, (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing.
On March 31, 2021, GATX Corporation ("GATX" or the "Company") made available material containing an overview of the Company, listed herein as Exhibit 99.1. This information is available on GATX's website at www.gatx.com.
Item 9.01. Financial Statements and Exhibits.
    (d) Exhibits
Exhibit No.  Description
99.1  
104Cover Page Interactive Data File (embedded within the Inline XBRL document).




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 hereunto duly authorized.
 
GATX CORPORATION
(Registrant)
/s/ Thomas A. Ellman
Thomas A. Ellman
Executive Vice President and Chief Financial Officer
March 31, 2021