Demand prompts Alnylam’s $250 million manufacturing expansion

18 December 2025

RNAi therapeutics company Alnylam Pharmaceuticals (Nasdaq: ALNY) has announced the planned expansion of its manufacturing facility in Norton, Massachusetts. 

The US company is preparing to invest $250 million to advance what is poised to become the industry’s first fully dedicated, proprietary, siRNA enzymatic-ligation manufacturing facility. 

This investment is expected to meaningfully expand capacity, significantly reduce production costs and position Alnylam to support future launches across its growing pipeline of potential new medicines.

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