<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>confirmingstatement-gp.txt
<DESCRIPTION>CONFIRMING STATEMENT GP
<TEXT>
Exhibit 1

CONFIRMING STATEMENT



This Statement confirms that the undersigned, Geoffrey Phillips, has
authorized and designated Brian L. Glassberg, Alan R. Haguewood and
Lisa M. Ibarra to execute and file on the undersigneds behalf all Forms 3,
4 and 5 (including any amendments thereto) that the undersigned may be
required to file with the U.S. Securities and Exchange Commission as a
result of the undersigneds ownership of or transactions in securities of
GATX Corporation.  The authority of Brian L. Glassberg, Alan R. Haguewood
and Lisa M. Ibarra under this Statement shall continue until the undersigned
is no longer required to file Forms 3, 4 and 5 with regard to the undersigneds
ownership of or transactions in securities of GATX Corporation, unless
earlier revoked in writing.  The undersigned acknowledges that neither
Brian L. Glassberg, nor Alan R. Haguewood nor Lisa M. Ibarra is assuming
any of the undersigneds responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934.




Date: August 7, 2023



/s/ Geoffrey Phillips
Geoffrey Phillips
</TEXT>
</DOCUMENT>
