Winners and Losers: Surge for SA drugs maker after sale announcement

News of a pharmaceutical company’s decision to exit Adelaide saw a surge in trades late in the week.

Nov 09, 2026, updated Nov 09, 2026
Photo: Mayne Pharma
Photo: Mayne Pharma

Shares in Mayne Pharma shot up 13.65 per cent in just one day after the company announced on Friday morning it was selling its Adelaide arm.

The SA-based business told shareholders on Friday that it had found a buyer for its Australian section, which includes its Salisbury North-based drugs factory.

A Perth-based suitor is behind the $55.5 million bid, which was accepted by the board and described by CEO Aaron Gray as a “defining step in Mayne Pharma’s transformation”.

Patient shareholders, previously burned by a messy and failed attempt to sell the entire business to US-based Cosette, seemed to welcome the news.

Shares rallied through to the close of trade on Friday afternoon and for the week ended up by 21.26 per cent to $3.08 per share. This implies a market capitalisation of $252.2 million.

It put Mayne firmly in the Winners list for the week, alongside Vintage Energy, which enjoyed a 50 per cent rise in its low share price ($0.001 per share).

Other microcaps H3 Energy and Altitude Minerals also enjoyed gains but remain some of the least valuable of the state’s listed companies at $5.4 million and $2.4 million respectively.

The full list of Winners and Losers for the week ending November 6:

Data via Baker Young Limited analysts

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