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Italy's Angelini to Buy Catalyst Pharma for $4.1 Billion in US Market ...
The deal gives Angelini Pharma a rare-disease portfolio and U.S. commercial platform as it targets growth in North America, the companies said.
On Thursday, May 7, 2026, Italian pharmaceutical company Angelini Pharma announced a definitive agreement to acquire Catalyst Pharmaceuticals for $4.1 billion in cash, marking the drugmaker's entry into the U.S. pharmaceutical market.
This acquisition reinforces Angelini Pharma's long-term commitment to Brain Health and Rare Diseases, establishing the company as a global player with the scale and capabilities needed to expand into the United States.
Angelini will pay $31.50 per share, a 28% premium, for Catalyst's portfolio including FDA-approved treatments FIRDAPSE, AGAMREE, and FYCOMPA, which Catalyst acquired from Eisai in 2023.
Catalyst CEO Rich Daly called the acquisition a "pivotal and transformative moment," saying the combined platform will enhance patient support and accelerate innovation for stakeholders worldwide.
Separately, Catalyst resolved patent litigation regarding a generic version of FIRDAPSE filed by Hetero USA, while the transaction remains subject to regulatory approval with closing expected in the third quarter of 2026.