Exhibit 99.1 NEWS RELEASE Contact: Thomas A. Quigley, III Vice President, Investor Relations, Mergers & Acquisition and Treasurer Phone (610) 251-1000 tquigley@triumphgroup.com TRIUMPH REPORTS FOURTH QUARTER FISCAL 2024 RESULTS PROVIDES FISCAL YEAR 2025 GUIDANCE RADNOR, Pa. – May 23, 2024 – Triumph Group, Inc. (NYSE: TGI) ("TRIUMPH" or the “Company”) today reported financial results for its fourth quarter and fiscal 2024, which ended March 31, 2024. Fourth Quarter Fiscal 2024 • Net sales of $358.6 million; ...