A consortium led by KKR & Co. offered to buy Ramsay Health Care Ltd., Australia’s largest private hospital operator, for A$20.1 billion ($15 billion).

Investors led by the U.S. private equity firm bid A$88 for each share, Ramsay said in a statement Wednesday. Ramsay shares closed at A$64.39 on Tuesday.

“The discussions between Ramsay and the consortium are preliminary in nature,” Ramsay said. “There is no guarantee that any further proposal will be forthcoming.”

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