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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 10-K/A
(Amendment No. 1)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2020
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission File Number 1-2328
gmt-20201231_g1.jpg
GATX Corporation
(Exact name of registrant as specified in its charter)
New York36-1124040
(State or Other Jurisdiction of incorporation or Organization)(I.R.S. Employer Identification No.)
233 South Wacker Drive
Chicago, IL 60606-7147
(Address of principal executive offices, including zip code)
(312) 621-6200
(Registrant's telephone number, including area code)

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

Securities Registered Pursuant to Section 12(g) of the Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes þ     No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes o     No þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes þ     No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes þ  No ¨


Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer
þ
Accelerated filer
o
Non-accelerated filer  
o
Smaller reporting company
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.    o

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes o     No þ

The aggregate market value of the voting and non-voting stock held by non-affiliates of the registrant was approximately $2.1 billion as of June 30, 2020.

There were 35.1 million common shares outstanding at January 31, 2021.

DOCUMENTS INCORPORATED BY REFERENCE
GATX’s definitive Proxy Statement filed on March 12, 2021PART III



Explanatory Note

On February 18, 2021, GATX Corporation (the "Company") filed with the Securities and Exchange Commission its Annual Report on Form 10-K for the year ended December 31, 2020.

This amendment No. 1 to Form 10-K ("Amendment No. 1") of the Company is being filed solely to amend Item 15(c) to include the separate financial statements of Alpha Partners Leasing Limited ("APLL") as required under Rule 3-09 of Regulation S-X. The financial statements of APLL for its fiscal year ended December 31, 2020 were not available at the time the Company filed its Annual Report on Form 10-K. The required financial statements are now provided as Exhibit 99.1 to this Amendment No. 1.

Item 15 is the only portion of the Company's Annual Report on Form 10-K being supplemented or amended by this Amendment No. 1. This Amendment No. 1 does not change any other information set forth in the original filing of the Company's Annual Report on Form 10-K for the year ended December 31, 2020. This Amendment No. 1 consists solely of the preceding cover page, this explanatory note, the information required by Item 15(c) of Form 10-K as provided in Exhibit 99.1, a signature page, the consent of the independent auditors for APLL, and certifications required to be filed as exhibits hereto.





Item 15.  Exhibits, Financial Statement Schedules

(a) 1.  Financial Statements
Page *
Documents Filed as Part of this Report:
Report of Independent Registered Public Accounting Firm with respect to the consolidated financial statements
58
Consolidated Balance Sheets — December 31, 2020 and 2019
60
Consolidated Statements of Comprehensive Income — Years Ended December 31, 2020, 2019, and 2018
61
Consolidated Statements of Cash Flows — Years Ended December 31, 2020, 2019, and 2018
62
Consolidated Statements of Changes in Shareholders’ Equity — Years Ended December 31, 2020, 2019, and 2018
63
Notes to Consolidated Financial Statements
64
Report of Independent Registered Public Accounting Firm on Internal Control Over Financial Reporting
110
_______

(*) Refers to the page numbers in the Company's Annual Report on Form 10-K filed on February 18, 2021.

2.    Financial Statement Schedules:

Schedules for which provision is made in the applicable accounting regulations of the Securities and Exchange Commission are not required under the related instructions or are inapplicable, and, therefore, have been omitted.

3. Exhibits.

(c) Separate financial statements of subsidiaries not consolidated and fifty percent or less owned persons.

Under Rule 3-09 of Regulation S-X, we are required to file separate unaudited consolidated financial statements of Alpha Partners Leasing Limited ("APLL"), the foreign entities of the Rolls-Royce & Partners Finance joint ventures, for the year ended December 31, 2020. The results of APLL were significant to GATX in 2019 under Rule 3-09 of Regulation S-X. The financial statements included in Exhibit 99.1 for the years ended December 31, 2020, 2019 and 2018 are filed as part of Item 15 of the Company's Annual Report filed on February 18, 2021 and should be read in conjunction with the Company's consolidated financial statements.

EXHIBIT INDEX

Exhibit
Number
 
Exhibit Description
Filed with this Report:
21**
23**
23.1
24**
31.1
31.2
32
99.1
101**
The following materials from GATX Corporation’s Annual Report on Form 10-K for the year ended December 31, 2020, are formatted in Inline XBRL (eXtensible Business Reporting Language): (i) Consolidated Balance Sheets at December 31, 2020 and December 31, 2019, (ii) Consolidated Statements of Comprehensive Income for the years ended December 31, 2020, 2019, and 2018, (iii) Consolidated Statements of Cash Flows for the years ended December 31, 2020, 2019, and 2018, (iv) Consolidated Statements of Changes in Shareholders' Equity for the years ended December 31, 2020, 2019, and 2018, and (v) Notes to the Consolidated Financial Statements.
104Cover Page Interactive Data File (embedded within the Inline XBRL document).
Incorporated by Reference:
3.1



3.2
4.1
4.2
4.3
10.1
i.
10.2
10.3
i.
10.4
10.5
i.
ii.
10.6
10.7
i.
10.8
i.
10.9
10.10



10.11
10.12
10.13
10.14
10.15
10.16
10.17
10.18
10.19
10.20
10.21
10.22
10.23
10.24
10.25
Undertakings to the GATX Corporation Salaried Employees’ Retirement Savings Plan is incorporated herein by reference to GATX’s Annual Report on Form 10-K for the fiscal year ended December 31, 1982, file number 1-2328.* (Paper copy).
_______

(*) Compensatory Plans or Arrangements.
(**) Included with the Company's Annual Report on Form 10-K filed on February 18, 2021.

Certain instruments evidencing long-term indebtedness of GATX Corporation are not being filed as exhibits to this Report because the total amount of securities authorized under any such instrument does not exceed 10% of GATX Corporation’s total assets. GATX Corporation will furnish copies of any such instruments upon request of the Securities and Exchange Commission.







SIGNATURE

Pursuant to the requirements of Section 13 or 15(d) 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/ BRIAN A. KENNEY
Brian A. Kenney
Chairman, President and Chief Executive Officer
March 30, 2021