EX-21.1 10 regn-ex211x12312019x10k.htm SUBSIDIARIES OF REGENERON PHARMACEUTICALS, INC.
Exhibit 21.1
SUBSIDIARIES OF REGENERON PHARMACEUTICALS, INC.

| Name of Subsidiary* |  | State or Other Jurisdiction of Incorporation or Organization
| Loop Road Holdings LLC |  | New York
| Old Saw Mill Holdings LLC |  | New York
| OSMR Holdings |  | Bermuda
| OSMR International |  | Bermuda
| OSMR LLC |  | New York
| Regeneron Assurance, Inc. |  | New York
| Regeneron Atlantic Holdings |  | Bermuda
| Regeneron Belgium BVBA |  | Belgium
| Regeneron Capital International B.V. |  | The Netherlands
| Regeneron Genetics Center LLC |  | Delaware
| Regeneron Healthcare Solutions, Inc. |  | New York
| Regeneron International Holdings LLC |  | Delaware
| Regeneron International Limited |  | Ireland
| Regeneron Ireland Holdings Unlimited Company |  | Ireland
| Regeneron Ireland Designated Activity Company |  | Ireland
| Regeneron Spain, S.L.U. |  | Spain
| Regeneron UK Limited |  | United Kingdom
| Rockwood Road Holdings LLC |  | New York
| _____________ |  |
| * Directly or indirectly wholly owned by Regeneron Pharmaceuticals, Inc.