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EX-21.1 5 regn-ex_211x12312024x10k.htm SUBSIDIARIES OF THE REGISTRANT REGENERON PHARMACEUTICALS, INC - Subsidiaries of the Registrant.

Exhibit 21.1

SUBSIDIARIES OF REGENERON PHARMACEUTICALS, INC.

Except as otherwise noted, each of the entities listed below is directly or indirectly wholly owned by Regeneron Pharmaceuticals, Inc.
Name of Subsidiary
State or Other Jurisdiction of Incorporation or Organization
Checkmate Pharmaceuticals, Inc.Delaware
Decibel Therapeutics, Inc.Delaware
Eastside Campus Holdings LLCNew York
Loop Road Holdings LLCNew York
Old Saw Mill Holdings LLCNew York
OSMR HoldingsBermuda
Oxular Acquisitions Limited
United Kingdom
Oxular Inc.
Delaware
Oxular Limited
United Kingdom
Regeneron Assurance, Inc.New York
Regeneron Atlantic HoldingsBermuda
Regeneron Austria GmbH
Austria
Regeneron Belgium SRL
Belgium
Regeneron Canada CompanyCanada
Regeneron France SASFrance
Regeneron Genetics Center LLCDelaware
Regeneron GmbHGermany
Regeneron Healthcare Solutions, Inc.New York
Regeneron India Private LimitedIndia
Regeneron International Holdings LLCDelaware
Regeneron Ireland Designated Activity CompanyIreland
Regeneron Italy S.r.l.Italy
Regeneron Japan KKJapan
Regeneron NL B.V.The Netherlands
Regeneron Spain, S.L.U.Spain
Regeneron Switzerland GmbHSwitzerland
Regeneron UK LimitedUnited Kingdom
Regeneron Ventures, L.P.*
Delaware
Rock County Holdings LLCNew York
Rockwood Road Holdings LLCNew York
RV Holding Corp.
Delaware
_____________
* The sole limited partner of Regeneron Ventures, L.P. is RV Holding Corp., which is wholly owned by Regeneron Pharmaceuticals, Inc. The general partner of Regeneron Ventures, L.P. is a third-party investment manager.