Alcoa has announced an agreement to acquire South32’s interests in a portfolio of bauxite, alumina and aluminium operations for an upfront consideration of approximately US$4.1 billion, in a transaction the company says will expand its global upstream aluminium business and strengthen its production footprint.
According to Alcoa, the cash-and-stock deal covers South32’s interests in the Boddington bauxite mine and Worsley alumina refinery in Western Australia, the Hillside aluminium smelter and idled Bayside smelter property in South Africa, and the Mineracao Rio do Norte (MRN) bauxite mine together with the Alumar alumina refinery and aluminium smelter in Brazil. The transaction excludes South32’s Mozal aluminium smelter in Mozambique.
The ASX-listed company said the acquisition has an implied enterprise value of about US$4.7 billion, including net debt, and also includes a contingent value right (CVR) of up to US$750 million linked to future alumina and aluminium prices over four annual periods beginning July 1, 2026.
The company said the acquisition is expected to reinforce its position as a pure-play upstream aluminium producer by adding low-cost mining, refining and smelting assets while expanding its global footprint across Australia, Brazil and South Africa.
“This is exactly the type of opportunity Alcoa is built to execute,” Alcoa President and Chief Executive Officer William F. Oplinger said.
“These high-quality, globally relevant assets are a strong strategic fit within our portfolio and align directly with our strengths as a leading pure-play upstream aluminum company. With our proven operating model and global capabilities, we are well positioned to enhance performance, unlock value, and support their long-term success within Alcoa.”
Oplinger said the investment also reflected the company’s commitment to supply security and regional operations.
“By investing in this opportunity, we are underscoring our commitment to supply security for our customers, strengthening the communities in which we operate, and delivering responsibly produced materials that are essential to the global economy,” he said.
Alcoa said the combined business is expected to generate approximately US$900 million in net present value through operational synergies, including optimisation across complementary assets and greater integration of its bauxite, alumina and aluminium operations. The company also said the acquisition is expected to be immediately accretive to earnings per share and free cash flow after completion.
Alcoa Chairman Thomas J. Gorman said the board believed the transaction would strengthen the company’s long-term competitive position.
“The Board is pleased to support this transaction, which we believe strengthens Alcoa’s competitive position, supports long-term earnings and cash flow growth, and creates lasting value for our shareholders,” Gorman said.
“We remain committed to the employees and stakeholders whose contributions are central to the success of these operations.”
Under the agreement, Alcoa will pay South32 US$3.1 billion in cash and approximately 17 million newly issued Alcoa shares, valued at around US$1 billion based on the company’s 10-day volume weighted average share price as of June 26, 2026. The new shares are expected to represent about 6% of Alcoa’s outstanding shares following issuance.
The transaction has been unanimously approved by the boards of both companies and is expected to close in the first half of 2027, subject to approval by South32 shareholders, regulatory approvals and other customary closing conditions.
The content of this article is based on information supplied by Alcoa Corporation. For more information, please refer to the official company announcement and communications from Alcoa. Please consult a licensed and/or registered professional in this area before making any decisions based on the content of this article.
