Brazilian Lithium Giant Sigma Resumes Full Operations After Settlement with Minas Gerais State

Sigma Lithium Corporation, a Brazilian company operating one of the world's largest lithium mines, has fully resumed its mining and industrial operations after signing a compliance agreement with the government of Minas Gerais state, removing a major source of operational uncertainty and sending its stock price sharply higher. The company's shares, which trade directly on the Nasdaq under the ticker SGML and are one of the few Brazilian stocks easily accessible to retail investors in the United States without an American Depositary Receipt (ADR), finished the day at $11.97, an increase of 11.56%.

The rally was sparked by the resolution of an environmental and regulatory dispute centered on the Grota do Cirilo project, a key operation in a region of Minas Gerais known locally as "Brazil's lithium valley." The company announced it had signed a "Terms for Adjustment of Procedures" (TAC) agreement, a standardized legal instrument in Brazil used to settle regulatory issues and provide a clear path for future operations. The accord means Sigma Lithium, which produces key materials for the electric vehicle (EV) battery supply chain, can now fully proceed with its planned production targets of 240,000 tonnes of lithium oxide concentrate within the next 12 months and 330,000 tonnes in fiscal year 2027.

The agreement puts a definitive end to administrative inquiries that had previously led to a partial suspension of mining operations. As part of the settlement, the company committed approximately $1 million in capital expenditure for environmental procedure adjustments and agreed to pay up to $540,000 in fines related to environmental matters dating from 2013 to 2022. The news provides a measure of stability in a sector that has faced increased scrutiny, particularly for companies operating large-scale extraction projects in Brazil.

Sigma Lithium, which operates what it terms a "Greentech" plant that emphasizes environmental practices like 100% water reuse and zero tailings dams, is now expected to focus on an aggressive expansion roadmap. The Grota do Cirilo operation is already among the world's largest hard-rock lithium projects, and the company has previously indicated plans to nearly double its output through a Phase 2 expansion to meet growing global demand for EV batteries.

What it touches The move directly impacts the company’s stock, SGML, which trades on the Nasdaq, offering a direct avenue for international investors seeking exposure to Brazil's role in the global lithium and electric vehicle supply chain.