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Angelini Pharma to Acquire Catalyst Pharmaceuticals for $4.1 Billion

May 7, 2026, 2:17 AM EDT2 sourcesAI-analyzed

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The acquisition premium boosts shareholder confidence and reflects a strong valuation. Similar acquisitions in biotech have historically resulted in price appreciation post-announcement.

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Angelini Pharma has agreed to acquire Catalyst Pharmaceuticals for $31.50 per share, totaling around $4.1 billion. This transaction strengthens Angelini's position in the U.S. market for rare diseases, with expected closure in Q3 2026, providing immediate value for Catalyst shareholders.

Angelini Pharma acquires Catalyst Pharmaceuticals for $31.50 per share.
Transaction valued at approximately $4.1 billion, with a 28% premium.
Acquisition to strengthen Angelini's U.S. presence in rare diseases.
Closing expected in Q3 2026, marking Angelini's U.S. market entry.
Catalyst's products include FIRDAPSE and AGAMREE for rare diseases.

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