Form 8-K

8-K — AAR CORP

Accession: 0001104659-26-048512

Filed: 2026-04-24

Period: 2026-04-24

CIK: 0000001750

SIC: 3720 (AIRCRAFT & PARTS)

Item: Regulation FD Disclosure

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — tm2612515d1_8k.htm (Primary)

EX-99.1 — EXHIBIT 99.1 (tm2612515d1_ex99-1.htm)

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Common Stock, $1.00 par value

AIR

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13

or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported):

April 24, 2026

AAR

CORP.

(Exact name of registrant as specified in its

charter)

Delaware

1-6263

36-2334820

(State of Incorporation )

(Commission

File Number)

(IRS Employer Identification No.)

One AAR Place

1100 N. Wood Dale Road

Wood Dale, Illinois 60191

(Address and Zip Code of Principal Executive Offices)

Registrant’s telephone number, including

area code: (630) 227-2000

Not Applicable

(Former name or former address, if changed since

last report)

Check the appropriate box below if the Form 8-K

filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities

Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange

Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under

the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under

the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading Symbol(s)

Name of Each Exchange on Which Registered

Common

Stock, $1.00 par value

AIR

New

York Stock Exchange

NYSE Texas

Indicate by check mark whether the registrant is an emerging growth

company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange

Act of 1934 (§ 240.12b—2 of this chapter).

Emerging

growth company ¨

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 7.01. Regulation FD Disclosure.

On April 24, 2026, AAR CORP. (the “Company”) issued

a press release announcing the completion of the purchase of Aircraft Reconfig Technologies LLC, a leading aircraft interiors engineering

company, from ZIM Aircraft Cabin Solutions LLC by the Company’s wholly-owned subsidiary AAR Aircraft Services, Inc. A copy

of the press release is furnished and attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein

by reference.

The information in this Item 7.01 and Exhibit 99.1 attached hereto

shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, nor shall it be deemed incorporated by reference

in any filing under the Securities Act, except as shall be expressly set forth by specific reference in such filing.

Item 8.01. Other Events.

On April 24, 2026, the Company completed the previously announced

purchase of Aircraft Reconfig Technologies LLC from ZIM Aircraft Cabin Solutions LLC by AAR Aircraft Services, Inc. for $35 million

in cash, subject to post-closing adjustments for working capital, cash, and debt.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.

Description

99.1

Press release issued by AAR CORP. on April 24, 2026

104

Cover Page Interactive Data File (the cover page XBRL tags are embedded in the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934,

the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date:     April 24, 2026

AAR CORP.

By:

/s/ Jessica A. Garascia

Jessica A. Garascia

Senior Vice President, General Counsel, Chief Administrative

Officer and Secretary

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm2612515d1_ex99-1.htm · Sequence: 2

Exhibit 99.1

FOR IMMEDIATE RELEASE

April 24, 2026

Contact:

Media Team

+1-630-227-5100

Editor@aarcorp.com

AAR completes acquisition of Aircraft Reconfig

Technologies

The acquisition immediately expands AAR’s engineering

and certification capabilities

Wood Dale, Illinois — AAR

CORP. (NYSE: AIR), a leading provider of aviation services to commercial and government operators, MROs, and OEMs, today announced the

completion of its acquisition of Aircraft Reconfig Technologies (ART) from ZIM Aircraft Cabin Solutions. ART is an engineering company

specializing in passenger aircraft reconfiguration for global airlines.

On December 17, 2025, AAR announced it had entered into a definitive

agreement to acquire ART for $35 million in an all-cash transaction, subject to customary adjustments.

“This acquisition adds FAA Organization Designation Authorization

(ODA) to AAR’s Engineering Services capabilities, which will enable AAR to issue supplemental type certificates (STCs) and Parts

Manufacturer Approval (PMA) without reliance on third parties,” said Tom Hoferer, AAR’s Senior Vice President of Repair &

Engineering. “Having an ODA enhances our aircraft cabin interior design, manufacturing, and certification offerings, and we are

excited to welcome ART to the AAR team.”

About AAR

AAR is a global aerospace and defense aftermarket solutions company with operations in over 20 countries. Headquartered in the Chicago

area, AAR supports commercial and government customers through four operating segments: Parts Supply, Repair & Engineering, Integrated

Solutions, and Expeditionary Services. Additional information can be found at aarcorp.com.

This press release may contain certain statements relating to future results, which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995, reflecting management’s expectations about future conditions, including anticipated activities and benefits related to the acquisition. Forward-looking statements may also be identified because they contain words such as ‘‘anticipate,’’ ‘‘believe,’’ ‘‘continue,’’ ‘‘could,’’ ‘‘estimate,’’ ‘‘expect,’’ ‘‘intend,’’ ‘‘likely,’’ ‘‘may,’’ ‘‘might,’’ ‘‘plan,’’ ‘‘potential,’’ ‘‘predict,’’ ‘‘project,’’ ‘‘seek,’’ ‘‘should,’’ ‘‘target,’’ ‘‘will,’’ ‘‘would,’’ or similar expressions and the negatives of those terms. These forward-looking statements are based on beliefs of management, as well as assumptions and estimates based on information currently available to management and are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results or those anticipated. For a discussion of these and other risks and uncertainties, refer to “Risk Factors” in AAR CORP.’s most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q. Should one or more of these risks or uncertainties materialize adversely, or should underlying assumptions or estimates prove incorrect, actual results may vary materially from those described. These events and uncertainties are difficult or impossible to predict accurately and many are beyond management’s control. Management assumes no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements or to reflect the occurrence of anticipated or unanticipated events.

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