Sigma Lithium Shares Fall After Brazilian Court Suspends Mine License

Shares of Sigma Lithium Corp. (NASDAQ:SGML) dropped sharply Tuesday, falling 12.6% after a Brazilian judge ordered the suspension of environmental licenses and mining activities at the company's flagship Grota do Cirilo mine.

Details of the Court Ruling

The preliminary ruling was issued Friday by Judge Antonio Lucio Tulio de Oliveira Barbosa in a civil suit filed by the Federation of Quilombola Communities of Minas Gerais, according to a court document reviewed by Reuters. The judge found evidence that the Bau Quilombola territory, a protected community of African descent, falls within the project's area of influence.

Key points from the decision include:

• The territory is approximately 2.7 km from the project's directly affected area.
• This distance is within the 8 km threshold that legally triggers a more extensive licensing process, including a requirement for free, prior, and informed consultation with the community.

The court has ordered an independent expert review to georeference and determine the exact distance between the mining project and the protected territory.

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Company Response and Outlook

Sigma Lithium stated it has not yet received any formal legal communication regarding the ruling and that its mining and industrial activities are continuing to operate. The company noted the decision was issued during a judicial recess in a jurisdiction over 300km from its operations.

In a statement, the company said it will begin its legal defense when courts resume regular operations on September 8. Sigma Lithium has maintained that its project lies outside the impact zone and disputed media reports suggesting the ruling would override a recent agreement with Minas Gerais state authorities.

Impact on Investors

The suspension introduces significant operational and legal uncertainty for a key asset. Despite the legal challenge, Sigma Lithium said it remains focused on its expansion plans. The company reiterated its guidance to deliver 240,000 tonnes of lithium oxide concentrate within 12 months and 330,000 tonnes in fiscal 2027.