John M. Holmes is Chairman, President and Chief Executive Officer of AAR CORP., serving as President and CEO since 2018 and Chairman of the Board since January 2023, and as a director since 2017. He joined AAR in 2001 and has held roles of increasing responsibility including President and Chief Operating Officer (2017-2018) and Chief Operating Officer - Aviation Services, growing the company through multiple acquisitions such as Trax and Triumph Group's Product Support business. He also serves on the board of GATX Corporation.