August 12, 2025

Wood Dale, Illinois — AAR CORP. (NYSE: AIR), a leading provider of aviation services to commercial and government operators, MROs, and OEMs, announced today it has acquired Aerostrat, a leading long-range maintenance planning software company, for a purchase price of $15 million plus contingent consideration of up to $5 million. The acquisition immediately expands the reach of AAR's software offerings and the enterprise resource planning system (ERP) capabilities of AAR’s Trax subsidiary.

August 11, 2025

Wood Dale, Illinois — AAR CORP. (“AAR” or the “Company”) (NYSE: AIR), a leading provider of aviation services to commercial and government operators, MROs and OEMs, announced today that it has successfully priced its offering of $150 million aggregate principal amount of 6.750% senior notes due 2029 (the “Additional Notes”). The Additional Notes are being issued at a price of 102.000% of their principal amount, plus accrued interest from March 15, 2025, for a yield to maturity of 6.119%.

August 11, 2025

Wood Dale, Illinois — AAR CORP. (“AAR” or the “Company”) (NYSE: AIR), a leading provider of aviation services to commercial and government operators, MROs and OEMs, announced today that it intends to offer, subject to market conditions and other factors, $150 million aggregate principal amount of 6.750% senior notes due 2029 (the “Additional Notes”). The Additional Notes will be issued as additional notes under an existing indenture dated March 1, 2024, pursuant to which the Company previously issued $550.0 million aggregate principal amount of 6.750% senior notes due 2029 (the “Existing Notes” and together with the Additional Notes, the “Notes”). Other than with respect to the date of issuance and the offering price, the Additional Notes will have the same terms as the Existing Notes.