Cobre Advances Toward 62.86% Control of Chile’s Sierra Atacama Copper Project

Published: Aug 31, 2026 15:23

Cobre Limited said its wholly owned Chilean subsidiary, Sierra Cobre SpA, has increased its position in the Sierra Atacama Copper Project in Chile following the issuance of new convertible non-voting preference shares under a previously announced US$12 million capital raising. The shares represent Cobre Chile’s pro-rata entitlement and will convert into ordinary shares once the company exercises a separate Control Option to acquire additional interests from Minera Salara Blanco in the project companies.

The Control Option carries a US$12 million purchase price and must be exercised by December 31, 2026. Upon exercise of the option and conversion of the preference shares, Cobre Chile would hold a 62.86% interest in both Sierra Atacama SpA and Bergbau Wagen SpA, giving it control of the project companies. Cobre also retains a further Final Option that provides a pathway toward consolidating additional ownership interests.

Sierra Atacama is an operating copper asset in Chile, with Cobre targeting a ramp-up in copper cathode production as it expands output from the existing underground mine and SX-EW processing facility. The company has said it is building a larger copper production platform around the asset, while also continuing exploration aimed at identifying additional resources and extending the scale and operating life of the project.

The latest share issuance advances Cobre’s pathway toward majority control of Sierra Atacama, but the company will only obtain the stated 62.86% controlling interest once the Control Option is exercised and the preference shares convert into ordinary shares. The development increases Cobre’s potential exposure to an operating Chilean copper cathode asset as production ramps up, while the separate Final Option provides a further route toward ownership consolidation.

Data Source Statement: Except for publicly available information, all other data are processed by SMM based on publicly available information, market communication, and relying on SMM's internal database model. They are for reference only and do not constitute decision-making recommendations.

For any inquiries or for more information, please contact: lemonzhao@smm.cn
For more information on how to access our research reports, please contact:service.en@smm.cn
Related News
QMines Intersects 32m at 1.99% Cu at Mt Chalmers as DFS Drilling Advances
4 mins ago
QMines Intersects 32m at 1.99% Cu at Mt Chalmers as DFS Drilling Advances
Read More
QMines Intersects 32m at 1.99% Cu at Mt Chalmers as DFS Drilling Advances
QMines Intersects 32m at 1.99% Cu at Mt Chalmers as DFS Drilling Advances
QMines has reported another broad copper intersection from its ongoing 10,000-metre drilling programme at the Mt Chalmers Copper and Gold Project in Queensland, Australia. Drill hole 26MCRD006 returned 32 metres at 1.99% copper, 0.39 g/t gold and 2.6 g/t silver from 138 metres, including 7 metres at 4.18% copper, with a peak one-metre interval of 11.3% copper. The same hole also returned 7 metres at 2.14% copper and 1.00 g/t gold from 163 metres, while a separate shallow polymetallic zone in hole 26MCDD008 returned 25 metres at 2.08 g/t gold, 92 g/t silver, 2.56% zinc and 0.19% copper from 56 metres. QMines said the latest drilling is helping improve its understanding of both the deeper copper-gold-dominant portion of the Mt Chalmers system and the shallower polymetallic lenses. All reported intervals are down-hole lengths, with true widths yet to be determined. The latest assays follow earlier August results from the project, including 35 metres at 2.88% copper, 0.75 g/t gold and 3.3 g/t silver from 107 metres. The current drilling programme is supporting technical work for the project’s Definitive Feasibility Study, while additional assays from further completed holes are still pending. The latest results provide further geological and technical information as QMines advances the Mt Chalmers DFS and continue to demonstrate broad zones of copper mineralisation within the project. However, the drilling remains part of the project-definition and feasibility process, meaning any eventual impact on resources, mine design or future copper production will depend on further drilling, modelling and completion of the feasibility work.
4 mins ago
Copper Prices Fell Before Rising, Afternoon Trading Thin [SMM Secondary Copper Daily Review]
32 mins ago
Copper Prices Fell Before Rising, Afternoon Trading Thin [SMM Secondary Copper Daily Review]
Read More
Copper Prices Fell Before Rising, Afternoon Trading Thin [SMM Secondary Copper Daily Review]
Copper Prices Fell Before Rising, Afternoon Trading Thin [SMM Secondary Copper Daily Review]
32 mins ago
Production Schedule Report for Three Major White Goods
40 mins ago
Production Schedule Report for Three Major White Goods
Read More
Production Schedule Report for Three Major White Goods
Production Schedule Report for Three Major White Goods
According to the latest production schedule report for the three major white goods released by ChinaIOL, combined scheduled production of air conditioners, refrigerators, and washing machines in September 2026 totals 27.21 million units, down 4.0% compared to actual production in the same period last year.
40 mins ago