X0609 4 2026-03-26 0000001750 AAR CORP AIR 0001806647 Garascia Jessica A. false 1100 N. WOOD DALE ROAD WOOD DALE IL 60191 1 Senior VP, GC, CAO & Secretary 0 Common Stock 2026-03-26 4 M 0 2368 41.88 A 31925 D Common Stock 2026-03-26 4 S 0 2368 112.2006 D 29557 D Common Stock 2026-03-26 4 M 0 1778 58.27 A 31335 D Common Stock 2026-03-26 4 S 0 1778 112.2006 D 29557 D Common Stock 2026-03-26 4 M 0 2138 67.02 A 31695 D Common Stock 2026-03-26 4 S 0 2138 112.2006 D 29557 D Stock Option 41.88 2026-03-26 4 M 0 2368 0 D 2023-07-31 2032-07-18 Common Stock 2368 0 D Stock Option 58.27 2026-03-26 4 M 0 1778 0 D 2024-07-31 2033-07-24 Common Stock 1778 1483 D Stock Option 67.02 2026-03-26 4 M 0 2138 0 D 2025-07-31 2034-07-22 Common Stock 2138 4277 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.8200 to $113.2400, inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The awarded stock option vests and becomes exercisable in 1/3 annual installments beginning on July 31, 2024 and shall vest as follows: 33 and 1/3% on each of July 31, 2024, July 31, 2025, and July 31, 2026. The awarded stock option vests and becomes exercisable in 1/3 annual installments beginning on July 31, 2025 and shall vest as follows: 33 and 1/3% on each of July 31, 2025, July 31, 2026, and July 31, 2027. /s/ Katherine Kwiat, power of attorney 2026-03-30