AAR CORP Director Robert Leduc Phantom Stock Acquisition

This Form 4 filing reports that Robert F. Leduc, a director of AAR CORP, acquired 127 shares of phantom stock on May 29, 2026, at a price of $112.62 per share. The phantom stock represents the economic equivalent of common stock and becomes payable in cash or common stock upon the director's termination of service or other specified dates under the Non-Employee Directors' Deferred Compensation Plan. Following this transaction, Leduc holds a total of 5,340 shares of phantom stock. The filing includes a power of attorney document executed on January 10, 2023, authorizing company representatives to file Forms 3, 4, and 5 on Leduc's behalf for Section 16 reporting requirements.