| Name | Ownership Percentage | Jurisdiction of Organization | ||||||||||||
Alnylam U.S., Inc. | 100% | Delaware | ||||||||||||
Alnylam U.S. Holdings, Inc. | 100% | Delaware | ||||||||||||
Alnylam UK Holdings Ltd. | 100% | United Kingdom | ||||||||||||
Alnylam Securities Corporation | 100% | Massachusetts | ||||||||||||
Sirna Therapeutics, Inc. | 100% | Delaware | ||||||||||||
Alnylam Australia Pty Ltd. | 100% | Australia | ||||||||||||
Alnylam Austria GmbH | 100% | Austria | ||||||||||||
Alnylam Belgium SPRL/BVBA | 100% | Belgium | ||||||||||||
Alnylam Brasil Farmaceutica Ltda. | 99% | Brazil | ||||||||||||
Alnylam (Bermuda) Ltd. | 100% | Bermuda | ||||||||||||
Alnylam Canada ULC | 100% | Canada | ||||||||||||
Alnylam France SAS | 100% | France | ||||||||||||
Alnylam Europe AG | 100% | Germany | ||||||||||||
Alnylam Germany GmbH | 100% | Germany | ||||||||||||
Alnylam Italy Srl | 100% | Italy | ||||||||||||
Alnylam Japan KK | 100% | Japan | ||||||||||||
Alnylam Netherlands BV | 100% | Netherlands | ||||||||||||
Alnylam Pharmaceuticals Spain SL | 100% | Spain | ||||||||||||
Alnylam Sweden AB | 100% | Sweden | ||||||||||||
Alnylam Switzerland GmbH | 100% | Switzerland | ||||||||||||
Alnylam Taiwan Co. Ltd. | 100% | Taiwan | ||||||||||||
ALNYPT Unipessoal LDA | 100% | Portugal | ||||||||||||
Alnylam UK Ltd. | 100% | United Kingdom | ||||||||||||