On Tuesday, September 29, 2026, Companhia Siderúrgica Nacional (CSNA3) reported that its subsidiary CSN Mineração S.A. has temporarily reduced low-quality iron ore production activities at the Dry Processing Plant of the Pires complex in Ouro Preto (MG), due to a tighter market environment pressured by higher freight costs. The company stated that this measure can be reversed at any time, provided that market conditions ensure better margins for this type of ore.
As a consequence of the temporary production cut and the expectation of lower volumes of third-party ore purchases in the coming months, CSN revised its projections for 2026. The projected volume for its own production and purchases of third-party ore was changed from a range between 45.0 and 47.0 million tons to a range between 39.0 and 41.0 million tons.
The company also updated its C1 cash cost projection for 2026, which went from a level between US$ 22.0 per ton and US$ 23.5 per ton to a range between US$ 25.0 per ton and US$ 26.0 per ton. According to CSN, these estimates will be included in section 3 of its Reference Form and can be accessed on the CVM website and on the company’s Investor Relations page.
CSN emphasized that the disclosed information consists of estimates subject to market factors beyond its control, does not constitute a performance guarantee, and may be revised. The company also stated that it will keep shareholders and the market updated on the resumption of activities at the affected plant.
