Westinghouse Air Brake Technologies (WAB) 10-Q 2021 Q2 Quarterly report

Exhibit 22.1

Guarantor Subsidiaries of Westinghouse Air Brake Technologies

The obligations under the Company's US Notes, Senior Credit Facility, and 364 Day Facility 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 June 30, 2021:

The US Notes and Senior Credit Facility

Issuer:    Westinghouse Air Brake Technologies Corporation

Guarantors:    GE Transportation, a Wabtec Company

RFPC Holding Corp.

Schaefer Equipment, Inc.

Standard Car Truck Company

Transportation IP Holdings, LLC

Transportation Systems Services Operations Inc.

Wabtec Holding Corp.

Wabtec Railway Electronics Holdings, LLC

Wabtec Transportation Systems, LLC

Workhorse Rail, LLC

The Euro Notes

Issuer:        Wabtec Transportation Netherlands B.V.

Guarantor:    Westinghouse Air Brake Technologies Corporation