Exhibit 1


CONFIRMING STATEMENT



This Statement confirms that the undersigned, John Sbragia, 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 8, 2023



/s/ John Sbragia
John Sbragia