WAB · Quarterly Report (Form 10-Q) · Filed April 22, 2026

Westinghouse Air Brake Technologies Corp — 10-Q exhibit

wabex2211q2026.htm

Westinghouse Air Brake Technologies Corp on Boardroom Alpha

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Exhibit 22.1

Guarantor Subsidiaries of Westinghouse Air Brake Technologies

The obligations under the Company's US Notes, the 2025 Credit Agreement and the 2025 Term Credit Agreement have been fully and unconditionally guaranteed by certain of the Company's U.S. subsidiaries. Each guarantor is 100% owned by the parent company, with the exception of GE Transportation, a Wabtec Company, which has 15,000 shares outstanding of Class A Non-Voting Preferred Stock held by General Electric Company. The Euro Notes are issued by Wabtec Netherlands and are fully and unconditionally guaranteed by the Company.

As of March 31, 2026:

The US Notes, the 2025 Credit Agreement, and the 2025 Term Credit Agreement

Issuer: Westinghouse Air Brake Technologies Corporation

Guarantors: GE Transportation, a Wabtec Company

RFPC Holding Corp.

Transportation IP Holdings, LLC

Transportation Systems Services Operations Inc.

Wabtec Components, LLC

Wabtec Holding, LLC

Wabtec Railway Electronics Holdings, LLC

Wabtec Transportation Systems, LLC

Wabtec US Rail, Inc.

The Euro Notes

Issuer: Wabtec Transportation Netherlands B.V.

Guarantor: Westinghouse Air Brake Technologies Corporation

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