Sigma Lithium shares surge 11.35% intraday after Brazil's ANM confirms waste pile safety and production resumption at Mine 1.

Sigma Lithium surged 11.35% intraday following Brazil's National Mining Agency (ANM) issuing a technical statement confirming the safety of its waste piles, ending regulatory uncertainty. The ANM’s inspection, conducted via drone and on-site assessments, found no geotechnical risks or legal grounds for operational closure, directly countering prior misinformation campaigns and supporting the company’s ramp-up of mining activities. Concurrently, Sigma Lithium resumed operations at its Grota do Cirilo mine, aligning with its production expansion plans. These developments reinforced investor confidence in the company’s operational compliance and growth trajectory, particularly as it advances its dry-stacking technology and second production plant. The resolution of regulatory scrutiny and operational resumption collectively drove the sharp intraday rally.