EX-21.1 4 fy202110k211.htm EX-21.1
Exhibit 21.1
SUBSIDIARIES OF THE REGISTRANT
The following lists the subsidiaries of Allegheny Technologies Incorporated, excluding those subsidiaries which, considered in the aggregate as a single subsidiary, do not constitute a significant subsidiary.

Name of Subsidiary |  | State or Country of Incorporation
ALC Funding Corporation |  | Delaware
Allegheny Ludlum, LLC |  | Pennsylvania
ATI Flat Rolled Products Holdings LLC |  | Pennsylvania
ATI Ladish LLC |  | Wisconsin
ATI Operating Holdings, LLC |  | Delaware
ATI Properties, Inc. |  | Delaware
Shanghai STAL Precision Stainless Steel Company Limited (1) |  | China
TDY Holdings, LLC |  | Delaware
TDY Industries, LLC |  | California
TDY Holdings Limited |  | United Kingdom

(1) Owned 60% by the registrant and 40% by China Baowu Steel Group Corporation Limited.