AAR Corp Files Form 8-K Regarding Investor Presentation and MRO Holdings Acquisition

AAR Corp. has filed a Current Report on Form 8-K with the Securities and Exchange Commission to disclose the availability of an updated investor education presentation. The filing, dated October 26, 2026, indicates that the presentation is intended for use during meetings with existing and prospective investors.

The report confirms that the presentation is attached as Exhibit 99.1 and is accessible via the company’s website at aarcorp.com/investors/events-and-presentations. The filing notes that the information contained on the website is not part of the Form 8-K and is not incorporated by reference into it.

The document outlines the company’s pending acquisition of MRO Holdings, Inc., a sociedad anónima organized under the laws of Panama. The acquisition is governed by a Share Purchase Agreement dated September 28, 2026, among AAR Corp., MROH Intermediate Holdco LLC, and MRO Holdings. The filing includes a detailed list of forward-looking statements regarding the transaction, including the expected benefits, financing arrangements, anticipated timing for closing, and the impact on the company’s business and financial condition.

The filing also details a significant number of risks and uncertainties that could cause actual results to differ materially from those anticipated. These risks include factors affecting the commercial aviation industry, the failure to complete the acquisition due to regulatory approvals or financing issues, and the challenges of integrating MRO Holdings to achieve anticipated cost and operational synergies.

Additionally, the filing provides context regarding the financial information presented. It notes that AAR Corp. prepares its financial statements in accordance with U.S. generally accepted accounting principles (GAAP), while MRO Holdings prepares its in accordance with International Financial Reporting Standards (IFRS). Consequently, the pro forma financial information included in the presentation is unaudited, preliminary, and subject to change as additional information becomes available.