Viatris Acquires Aculys Pharma to Secure CNS Assets and Japan/APAC Rights

October 15, 2025

Viatris Inc. has acquired clinical-stage Aculys Pharma, Inc., obtaining exclusive development and commercialization rights in Japan for pitolisant and rights in Japan and select Asia‑Pacific markets for Spydia (diazepam) nasal spray. The deal includes an upfront payment to Aculys shareholders with additional milestone and royalty payments, and is intended to strengthen Viatris' presence and CNS capabilities in Japan.

Buyers
Viatris Inc.
Targets
Aculys Pharma, Inc.
Sellers
Aculys Pharma shareholders
Industry
Pharmaceuticals
Location
Japan
Transaction Type
Buyout

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