BioMarin Pharmaceutical Inc

BMRN: XNAS (USA)

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BioMarin: $4.8 Billion Deal for Amicus Therapeutics Expands Rare Disease Portfolio; Shares Surge 18%

Rachel Elfman

Dec 23, 2025

BioMarin plans to acquire Amicus Therapeutics for $14.50 per share in an all-cash transaction, representing a 33% premium to Amicus' last close for a total equity value of $4.8 billion. BioMarin's stock rose nearly 18% on Dec.19, and the deal is expected to close in the second quarter of 2026.

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BioMarin Pharmaceutical Inc

BioMarin: $4.8 Billion Deal for Amicus Therapeutics Expands Rare Disease Portfolio; Shares Surge 18%

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