Exhibit 1


CONFIRMING STATEMENT



This Statement confirms that the undersigned, Brian L.
Glassberg, has authorized and designated 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 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 Lisa M. Ibarra is
not assuming any of the undersigneds responsibilities to comply
with Section 16 of the Securities Exchange Act of 1934.



Date: December 6, 2022


/s/ Brian L. Glassberg
Brian L. Glassberg