Sigma Lithium (SGML) investor relations material

Strategic priorities and commercial strategy

• Focus on securing demand through offtake agreements with up to $100M in client prepayments, reducing structural costs at the plant gate, and maintaining production scale.

• Commercial strategy includes partnering with trading companies to capture seasonal market opportunities.

• Short-term priorities emphasize deleveraging, lowering all-in factory costs, optimizing maintenance cycles, and leveraging suppliers for working capital efficiency.

• Refinement of export finance and increasing accounts payable duration are key liquidity improvement measures.

Cost leadership and operational efficiency

• Maintains one of the lowest all-in cash costs in the lithium industry, with continuous reductions in plant gate and sustaining costs.

• Plant gate costs dropped from $397/t in 1Q24 to $318/t in 2Q25, while all-in sustaining costs fell from $622/t to $427/t over the same period.

• Achieved over two years without a lost time injury, reflecting a strong safety culture and operational excellence.

• Sequential plant upgrades and process optimizations have further reduced processing costs and increased production volumes.

Financial discipline and balance sheet management

• Deleveraging efforts have reduced short-term trade finance debt by 57% from $101M in 1Q24 to $43M in 2Q25, with interest rates declining to 8.7%.

• Interest expenses per tonne have decreased from $127/t in FY2023 to $70/t in 2Q25, with further reductions targeted through subsidized BNDES debt.

• Prepayments from offtake agreements are used to lower interest costs and extend debt maturities, supporting financial flexibility.

• Ability to generate free cash flow at current lithium prices is maintained, with cash flow forecasts showing resilience across price scenarios.