Angelini Pharma bets $4.1bn on rare neurology scale with Catalyst Pharmaceuticals

Angelini gains U.S. rare disease scale. Catalyst gets certainty, but Firdapse concentration keeps the real test ahead.

Angelini gains U.S. rare disease scale. Catalyst gets certainty, but Firdapse concentration keeps the real test ahead.

Cosette Pharmaceuticals, Inc. has officially terminated its proposed AUD 7.40-per-share acquisition of Mayne Pharma Group Limited after the Australian government blocked the transaction. The decision was confirmed on December 9, 2025, and followed by Mayne Pharma’s own termination notice issued on December 11. The companies cited both the Treasurer of Australia’s ruling and the expiry […]