AAR CORP

For the period ended Aug 31, 2026. Filed Sep 29, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Aug 31, 2026 · Filed Sep 29, 2026

AIR$115.61-0.9%Stored close · as of Nov 10, 2026

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Contents

Item 6. Exhibits Exhibit Index

Item 6 – Exhibits

The exhibits to this report are listed on the following index:

ExhibitNo.	Description		Exhibits

10.	Material Contracts	10.1*	Form of AAR CORP. Fiscal 2027 Short-Term Incentive Plan (filed herewith).

		10.2*	Form of AAR CORP. Fiscal 2027 Restricted Stock Agreement for Ratable Vesting (filed herewith).

		10.3*	Form of AAR CORP. Fiscal 2027 Restricted Stock Agreement for Cliff Vesting (filed herewith).

		10.4*	Form of AAR CORP. Fiscal 2027 Performance Restricted Stock Agreement (filed herewith).

		10.5*	Form of Fiscal 2027 Director Restricted Stock Agreement (incorporated by reference to Exhibit 10.34 to the Registrant’s Annual Report on Form 10-K for the fiscal year ended May 31, 2026).

		10.6*	Form of AAR CORP. Fiscal 2027 Special Performance-Based Restricted Stock Agreement (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on July 24, 2026).

31.	Rule 13a-14(a)/15(d)-14(a) Certifications	31.1	Section 302 Certification of Chief Executive Officer of Registrant (filed herewith).

		31.2	Section 302 Certification of Chief Financial Officer of Registrant (filed herewith).

32.	Section 1350 Certifications	32.1	Section 906 Certification of Chief Executive Officer of Registrant (filed herewith).

		32.2	Section 906 Certification of Chief Financial Officer of Registrant (filed herewith).

101.	Interactive Data File	101	The following materials from the Registrant’s Quarterly Report on Form 10-Q for the quarter ended August 31, 2026, formatted in Inline XBRL (eXtensible Business Reporting Language): (i) Condensed Consolidated Balance Sheets at August 31, 2026 and May 31, 2026, (ii) Condensed Consolidated Statements of Income for the three-months ended August 31, 2026 and 2025, (iii) Condensed Consolidated Statements of Comprehensive Income for the three-months ended August 31, 2026 and 2025, (iv) Condensed Consolidated Statements of Cash Flows for the three-months ended August 31, 2026 and 2025, (v) Condensed Consolidated Statement of Changes in Equity for the three-months ended August 31, 2026 and 2025, and (vi) Notes to Condensed Consolidated Financial Statements.**

104.	Cover Page Interactive Data File	104	Cover Page Interactive Data File (embedded within the Inline XBRL document and contained in Exhibit 101).

*	Management contract and compensatory arrangement.

Pursuant to Rule 406T of Regulation S-T, the Interactive Data Files on Exhibit 101 hereto are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and otherwise are not subject to liability under those sections.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.