Form 4 Filing by Christopher A. Jessup

This filing reports the withholding of 7,098 shares of common stock by Christopher A. Jessup, Senior Vice President-CCO of AAR CORP, to satisfy tax obligations related to the vesting of performance-based restricted stock. Additionally, 1,294 shares were withheld for tax obligations concerning the vesting of time-based restricted stock. These transactions occurred on July 31, 2026. Following these transactions, Mr. Jessup holds 78,044.525 shares of common stock.