Exhibit 1


CONFIRMING STATEMENT



This Statement confirms that the undersigned, Adam L. Stanley,
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: January 25, 2023



/s/ Adam L. Stanley
Adam L. Stanley