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Posted 4 November 2025 AM
Mayne's sale to US pharma Cosette is again in doubt after Federal Treasurer Jim Chalmers said he was considering whether he should make orders prohibiting the acquisition, citing national interest.
In a letter from Chalmers that Cosette provided to Mayne, the Treasurer said that his "preliminary view is that the Proposed Acquisition would be contrary to the national interest, on the grounds that it would negatively impact the Australian economy and community". Mayne's share price fell by just over a third on the news.

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