Sigma Lithium (SGML) investor relations material

Operational performance and upgrades

• Achieved over two years without lost time injuries, demonstrating a strong safety record and operational excellence.

• Upgraded mining operations in late 2025, pivoting to in-house mining with larger machinery to boost productivity and reach nameplate capacity in early 2026.

• Greentech Plant 3.0 upgrades increased plant recoveries to 70%, though mining initially lagged behind plant improvements.

• Maintained low-cost producer status, with ongoing cost optimization and increased revenues from sales of low-grade lithium fines.

• Fully funded for Phase 2 expansion, with infrastructure and equipment in place to support growth.

Financial position and cash flow

• Short-term trade finance reduced by 60% in 2025, with cash position at $21M as of November 13, 2025.

• Long-term debt set to be nearly eliminated using proceeds from new offtake agreements.

• All-in sustaining costs remained low, with 2027E guidance at $511/t, supporting resilience to lithium price volatility.

• Cash flow generation outlook remains strong, with positive forecasts at various realized prices and increased production volumes expected from expansion.

• Days of payables to suppliers decreased by 12% quarter-over-quarter in 3Q25, reflecting improved working capital management.

Strategic priorities and commercial strategy

• Focused on deleveraging through offtakes and client advancements, further lowering costs, and maintaining a successful commercial strategy.

• Pricing strategy efficiently captured price cycles in 2025, mitigating the impact of market volatility.

• Offtake agreements enabled mining upgrades and provided working capital, equipment leasing, and debt replacement.

• Continued partnerships with trading companies and commercialization of a wider range of products to capture seasonal demand.

• Competitive advantage built on scale, low costs, traceability, and rapid execution, positioning for sales to major supply chains.