<SEC-DOCUMENT>0001246360-21-000223-index.html : 20210129
<SEC-HEADER>0001246360-21-000223.hdr.sgml : 20210129
<ACCEPTANCE-DATETIME>20210129093507
ACCESSION NUMBER:		0001246360-21-000223
CONFORMED SUBMISSION TYPE:	5
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201231
FILED AS OF DATE:		20210129
DATE AS OF CHANGE:		20210129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Conniff James M.
		CENTRAL INDEX KEY:			0001628942

	FILING VALUES:
		FORM TYPE:		5
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02328
		FILM NUMBER:		21568478

	MAIL ADDRESS:	
		STREET 1:		222 W. ADAMS ST.
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

ISSUER:		

	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

	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>5
<SEQUENCE>1
<FILENAME>form.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
Document 1 - file: form.html

Document 1 - RAW XML: form.xml

</DOCUMENT>
</SEC-DOCUMENT>