EX-21.1 4 rare-ex21_1.htm EX-21.1

Exhibit 21.1

Significant Subsidiaries of Ultragenyx Pharmaceutical Inc.

Name of Subsidiary |  | Jurisdiction of Incorporation
Ultragenyx Holdco LLC |  | Delaware
Ultragenyx UK Ltd |  | United Kingdom
Ultragenyx Europe GmbH |  | Switzerland
Ultragenyx Germany GmbH |  | Germany
Ultragenyx Brasil Farmacêutica Ltda |  | Brazil
Ultragenyx Argentina SRL |  | Argentina
Ultragenyx Netherlands B.V. |  | Netherlands
Ultragenyx France SAS |  | France
Ultragenyx Colombia SAS |  | Colombia
Ultragenyx Canada Inc. |  | Canada
Ultragenyx México, S. de R.L. de C.V. |  | Mexico
Ultragenyx Japan K.K. |  | Japan