Alcoa moves for South32 aluminium assets
Alcoa agrees to buy South32's bauxite, alumina and aluminium assets across three continents in a deal worth $4.1bn upfront.
US aluminium producer Alcoa has agreed to buy South32's bauxite, alumina and aluminium assets in Australia, Brazil and South Africa in a deal worth $4.1bn upfront.
The transaction will see Alcoa pay $3.1bn in cash and issue about 17m new shares valued at roughly $1bn. South32 could also receive up to $750m in contingent cash payments linked to alumina and aluminium prices through 2030. South32 put the implied enterprise value of the deal at up to $5.6bn, including about $750m in net debt and lease liabilities to be assumed by Alcoa and the contingent consideration.
The assets being sold include South32's 86% stake in Worsley Alumina in Western Australia, its 100% interest in the Hillside aluminium smelter in South Africa, a 33% stake in Brazil's MRN bauxite mine, and its interests in the Brazil Alumina refinery and Brazil Aluminium smelter. South32's Mozal aluminium smelter in Mozambique is excluded from the deal and remains on care and maintenance, with a sale still under review.
Alcoa said the acquisition would lift its pro forma 2025 production to 3.2m tonnes of aluminium and 14.8m tonnes of alumina, and expects about $900m in net present value synergies, mainly through integrating Western Australian mining and refining operations and consolidating its position in Brazil.
For South32, the sale marks a major reshaping of its portfolio towards upstream base metals. Chief executive Matt Daley said around 85% of the company's pro forma EBITDA would come from base and precious metals after completion. The deal is expected to close in the first half of 2027, subject to South32 shareholder approval, regulatory clearances and other closing conditions, and South32 plans to distribute at least half of the Alcoa shares it receives directly to eligible shareholders, with the rest sold in an orderly manner.
The deal comes as bauxite and alumina trades remain closely watched by dry bulk owners. Alcoa already has exposure to Guinea through its stake in Compagnie des Bauxites de Guinee (CBG), formed in 1963 by the Guinean government and Halco Mining to develop bauxite in the Boke region. The Guinean state owns 49% of CBG, while Halco holds 51%, and Alcoa owns 45% of Halco.
Guinea's growing role in the bauxite trade has become a bigger issue for shipping. The country has been looking to use its position as the world's key bauxite supplier to gain greater control over pricing and the structure of the industry, while tightening control over mining and export activity and pushing for more local processing. For bulk shipping, that matters because changes in bauxite sourcing, export controls or alumina refining locations can quickly alter tonne-mile demand. Splash has reported this year on bauxite becoming one of dry bulk's main growth trades, helped by long-haul Guinea to China cargoes and rising Chinese import dependence.
Photo: Wikimedia Commons (CC BY 2.5).
