<SEC-DOCUMENT>0000040211-23-000087-index.html : 20230621
<SEC-HEADER>0000040211-23-000087.hdr.sgml : 20230621
<ACCEPTANCE-DATETIME>20230621105416
ACCESSION NUMBER:		0000040211-23-000087
CONFORMED SUBMISSION TYPE:	11-K/A
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20211231
FILED AS OF DATE:		20230621
DATE AS OF CHANGE:		20230621

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GATX CORP
		CENTRAL INDEX KEY:			0000040211
		STANDARD INDUSTRIAL CLASSIFICATION:	TRANSPORTATION SERVICES [4700]
		IRS NUMBER:				361124040
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		11-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02328
		FILM NUMBER:		231028337

	BUSINESS ADDRESS:	
		STREET 1:		233 SOUTH WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606-7147
		BUSINESS PHONE:		3126216200

	MAIL ADDRESS:	
		STREET 1:		233 SOUTH WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606-7147

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GENERAL AMERICAN TRANSPORTATION CORP
		DATE OF NAME CHANGE:	19750722
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K/A
<SEQUENCE>1
<FILENAME>gatx-2021123111xkasalaried.htm
<DESCRIPTION>11-K/A
<TEXT>
Document 1 - file: gatx-2021123111xkasalaried.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>a2021123111-kasalariedempl.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 2 - file: a2021123111-kasalariedempl.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>gatxlogoa01a23.jpg
<DESCRIPTION>LOGO
<TEXT>
Document 3 - file: gatxlogoa01a23.jpg

</DOCUMENT>
</SEC-DOCUMENT>