Rio Tinto will buy Arcadium Lithium in an all-cash deal valuing the target company at $6.7 billion, as one of the world’s largest miners is boosting its position as a global leader in energy transition commodities. Rio Tinto and Arcadium Lithium plc on Wednesday announced a definitive agreement under which Rio Tinto will acquire Arcadium in an all-cash transaction for US$5.85 per share. The price in the transaction represents a premium of 90% to Arcadium’s closing price of $3.08 per share on 4 October 2024 and values Arcadium’s…