Codelco has contained its 2025 production audit to disclosure and discipline, but the larger damage sits in the metric that matters most for a miner trying to prove its turnaround: reported copper output.
The state-owned Chilean producer said an internal review found that 26,875 metric tons of fine copper had been recognized too early in its 2025 production figures, as per a Reuters report.
Most of the disputed volume came from Chuquicamata, where 20,000 metric tons tied to oxide material were included in production, according to Bloomberg. Ministro Hales accounted for another 6,875 metric tons tied to calcium arsenite. Codelco said those tons should have remained in work-in-process until further treatment was completed.
Codelco dismissed one executive and sanctioned others after the review. Reuters reported that seven current executives and one former executive were found responsible, and that the company notified Chile’s public prosecutor’s office so authorities could assess whether criminal liability may be involved.
The company has drawn a boundary around the financial impact. Codelco says the audit stops short of a restatement for the year ended December 31, 2025. Instead, the correction will appear through notes to production figures in its annual report, management discussion, website, and other official communications.
Codelco reported own copper production of 1.334 million metric tons in 2025, up 0.5% from 2024, while total attributable production reached 1.44 million metric tons. Against that narrow increase, a 26,875-ton adjustment is not cosmetic. It changes how much confidence outsiders can place in the production trend.
The audit also lands against a stronger financial year. Codelco reported EBITDA of $6.67 billion, up 23%, and profit of $2.42 billion for 2025. Contributions to Chile’s Treasury rose 16% to $1.78 billion. Those gains were helped by copper prices, while the operating picture remained more fragile.
Codelco’s full-year report showed total copper output, including stakes in El Abra, Anglo American Sur, and Quebrada Blanca, slipped 0.1%. Own copper sales fell 3.1% to 1.522 million metric tons, while cash costs rose 4.8% to 208.6 cents per pound. Net financial debt rose 12.1% to $25.12 billion.
That mix is why the production error matters beyond the 2% figure. A later reclassification undercuts the cleanest version of that recovery story.
The political exposure is also unusually direct because Codelco is not just another miner. It is owned by the Chilean state and remains a major contributor to public finances. Reuters reported that Chile’s Mining and Economy Minister Daniel Mas used unusually blunt language referring to the miner and tied the government’s response to restoring transparency.
Bloomberg, cited by mining industry outlets, reported that the output adjustment points to Codelco’s lowest annual production since 1998. That shows why the correction has market significance: the issue is not only whether the 2025 accounts stand, but whether the operational floor is lower than investors and policymakers were told.
Information for this story was found via the sources and companies mentioned. The author has no securities or affiliations related to the organizations discussed. Not a recommendation to buy or sell. Always do additional research and consult a professional before purchasing a security. The author holds no licenses.
