Form 4 Filing for AAR CORP

This filing reports a transaction by John W. Dietrich, a director at AAR CORP. On June 1, 2026, Mr. Dietrich acquired 1364 shares of Common Stock under a Restricted Stock Agreement, exempt from reporting under Rule 16b-3. The acquisition was at a price of $0.0 per share, resulting in a post-transaction ownership of 8426 shares. The filing was signed by Katherine Kwiat, acting as power of attorney for Mr. Dietrich, on June 3, 2026. The filing also includes a Power of Attorney document, appointing Katherine Kwiat and others to execute and file necessary SEC forms on behalf of Mr. Dietrich.