GRI and SASB Index This reporting index aligns disclosures addressed in this report to selected standards of the Global Reporting Initiative (GRI) Standards, as well as applicable Sustainability Accounting Standard Board (SASB) indicators. SASB GRI GRI DISCLOSURE TITLE RESPONSE OR DISCLOSURE LOCATION GENERAL DISCLOSURES 102-1 Name of the organization AAR CORP. 102-2 Activities, brands, products, and services About AAR CORP., pages 5-8 2021 Form 10-K Item 1. Business, pages 2-7 102-3 Location of headquarters Wood Dale, Illinois, USA 102-4 Location of operations About AAR CORP., page 7 https://www.aarcorp.com/about/international-presence/ 102-5 Ownership and legal form 2021 Form 10-K Item 1. Business – General, page 2 102-6 Markets served About AAR CORP., page 7 2021 Form 10-K Item 1. Business – Business Segments, pages 3-4; Customers, page 5 https://www.aarcorp.com/about/international-presence/ 102-7 Scale of the organization About AAR CORP., pages 5-7 2021 Form 10-K Item 1. Business – Human Capital Resources, page 6 2021 Annual Report Selected Financial Highlights, page 3 102-8 Information on employees and other workers In countries where it is legally required, our employees have employment contracts. We generally do not have employment contracts in the US. We do have US citizens who are deployed to our government programs sites (OCONUS) who are on a renewable FSA (Foreign Service Agreement). We have 56 part time employees as of May 31, 2021. Supporting our employees, page 20 102-9 Supply chain Supplier expectations, pages 38-39 102-13 Membership of associations Membership of associations, page 59 45