Mayne Pharma Earns Back $14.4M in Legal Costs After Court Win Over Cosette

Mayne Pharma has secured a $14.4 million Cosette legal recovery following a Supreme Court of NSW costs order, delivering a direct balance sheet boost even as the underlying appeal remains pending.

By Josua Ferreira -

Key Takeaways

  • Mayne Pharma (ASX: MYX) received $14,410,714.49 from Cosette Pharmaceuticals in June 2026, comprising legal costs, costs of the costs application, and interest.
  • The payment follows an October 2025 court judgment in Mayne Pharma's favour that dismissed all of Cosette's claims arising from the purported termination of a February 2025 Scheme Implementation Deed.
  • Cosette lodged an appeal in January 2026, which was heard on 2–3 June 2026 with a decision reserved, meaning the underlying dispute remains legally unresolved.
  • The base costs order was set at $13,269,328.04 by the NSW Supreme Court in May 2026, with interest and application costs lifting the final receipt to $14,410,714.49.
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