GATX Corp Director Receives 731 Restricted Stock Units as Annual Equity Retainer

John M. Holmes, a director of GATX Corporation, received 731 restricted stock units (RSUs) as his annual equity retainer on April 24, 2026. The RSUs represent the right to receive one share of common stock each and were granted at $0.00 per share. These RSUs will fully vest on the date of the first annual shareholders meeting following the grant date, subject to Holmes' continued service through that date. Holmes elected to defer receipt of the shares under the GATX Directors' Voluntary Deferred Fee Plan. Following this transaction, Holmes holds 4,192 shares of GATX common stock. The filing represents a routine Form 4 disclosure of director compensation in the form of equity awards.