Sigma Lithium Wins in State Court of Minas Gerais; Overturn of Unwarranted Local Judge Decision

Sigma Lithium Corporation achieved a significant legal victory when the Court of Justice of Minas Gerais state overturned a lower court decision that included a potential US$10 million legal collateral requirement. The appeals court ruling was based on robust quantitative environmental evidence presented by the company, effectively debunking claims made by local prosecutors.

The company's defense centered on 12 months of independently collected and verified environmental monitoring data through May 2026, demonstrating exemplary environmental performance across four neighboring communities near its Grota do Cirilo operation. Key metrics included dust levels operating 560% better than recommended standards for total suspended particles and 350% better for particles below 2.5 micrometers, full compliance with Brazilian noise standards across 95 measurement campaigns, and vibration levels so low they barely registered on seismograph scales.

This legal resolution removes a significant financial overhang for Sigma Lithium, which operates as the largest lithium oxide concentrate producer in the Americas with current nameplate capacity of 270,000 tonnes annually. The company is currently pursuing a Phase 2 expansion designed to nearly double production capacity to 520,000 tonnes, making this legal clarity particularly valuable for operational continuity.

The victory reinforces Sigma Lithium's position in the sustainable lithium supply chain, where environmental compliance and community relations are increasingly critical factors for long-term operational success. The independent monitoring requirement established by the court may actually benefit the company by providing ongoing third-party validation of its environmental performance, supporting its broader sustainability narrative in the competitive battery materials market.