Slide 1: Second Quarter 2026 Earnings Release Presentation
Second Quarter 2026 Earnings Release Presentation 14th of August 2026 : SGML : SGML : S2GM34
Slide 2: Disclaimer
Disclaimer No Offer or Solicitation Regarding Securities This presentation has been prepared by Sigma Lithium Corporation (“Sigma”) for general information purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any securities of Sigma or its affiliates in any jur
Slide 3: Disclaimer
Disclaimer (…) to risks associated with its reliance on consultants and others for mineral exploration and exploitation expertise; The current COVID-19 pandemic could have a material adverse effect on Sigma’s business, operations, financial condition and stock price; If Sigma is unable to ultimately
Slide 4: Introduction to Sigma Lithium
Introduction to Sigma Lithium Second Quarter 2026
Slide 5: Execution Excellence, Cost Controls and Operational Resilience Drive Value Creation
Sigma Lithium: Execution Excellence, Cost Controls and Operational Resilience Drive Value Creation Enhanced Operational Efficiency Sigma Lithium: Large Scale, Low- Cost, and Traceable Materials Achieving Record Recoveries in Upgraded Mining in Record Timetable Cleantech Industrial Processing Zero Ta
Slide 6: Upgrade, Modernization and Capacity Increase of Mining Fleet
Upgrade, Modernization and Capacity Increase of Mining Fleet
Slide 7: Financial Highlights of 2Q 26
Financial Highlights of 2Q 26
Slide 8: Reliable and Disciplined Execution Surpassed All Targets
Reliable and Disciplined Execution Surpassed All Targets Large Cash Generated US$27 Million in Cash from Operations During 1H 26 Flow Disciplined Execution: Lowered Costs and Delivered High Margins: 60% Gross Margin High Margins 47% Adjusted EBITDA Margin 13% Adjusted Net Margin Increased
Slide 9: Low-Cost Stewardship: Strong Cash Flow Generation and High Profitability
Low-Cost Stewardship: Strong Cash Flow Generation and High Profitability (US$ millions) Increased Production Low-Cost Leader Net Revenues Growth Debt Repayment 2Q 26 1H 26 YoY 2Q 26 2Q 26 +50% 35,000t US$401/t US$97M (43%) Volume Plant Gate 1H 26 2 years +29% +52% US$452/t US$55M (25%) vs. 1Q 26 CIF
Slide 10: Low-Cost Global Leader in Lithium Concentrate
Low-Cost Global Leader in Lithium Concentrate: Resulting from Financial Discipline and Precise Growth Strategy (1) (2) (3) Plant Gate Cost CIF Cash Cost All-In Sustaining Costs USD/Tonne USD/Tonne USD/Tonne -33% -36% $775 $779 $761 $670 $692 $623 $622 $668 $551 $543 $592 $594 $515 $513 $427 $458 $44
Slide 11: Competitive Advantage of Low Costs: Resilience From Price Pressures
Competitive Advantage of Low Costs: Create Resilience From Price Pressures of New Regions and Refining Innovation (1) 2,000 Hard-Rock Lithium CIF China Cost-Curve Total Cash Cost (AISC) 1,800 Net Lithium Concentrate Price CIF China (SC5) CIF China US$/t Cost of Lithium Concentrate 2025 Updated Guida
Slide 12: One of the World's Best Safety Records
Sigma Lithium Has One of the World’s Best Safety Records: 1,100+ Days With ZERO Accidents and Fatalities Rigorous Safety Protocols Employee engagement & strict processes Direct connection to factory floor Enhanced performance (1) Without Lost Time Injury (LTI) YTD TRIFR(2) (1) Data as of Augus
Slide 13: Operational Efficiency and Cost Controls Enabled Stable High Margins
Operational Efficiency and Cost Controls Enabled Stable High Margins and Profitability (1) (1) (1) Gross Margin Adj. EBITDA Margin Adj. Operating Margin Adj. Net Margin 60% 60% 47% 39% 35% 33% 32% 27% 23% 16% 13% (40%) (101%) (119%) (19%) (113%) 2Q24 2Q25 1Q26 2Q26 2Q24 2Q25 1Q26 2Q26 2Q24 2Q25 1Q26
Slide 14: Debt Reduction: Financial Discipline
Debt Reduction: Financial Discipline 25% of Total Debt Repaid in the Last Year, 43% Last 2 Years Total Debt = Short-Term Bank Trade Finance Debt + Shareholder & Development Bank Debt US$ Millions -43% $219 $201 -25% $181 $174 $169 $167 $162 Total Debt (US$ M) $141 $134 (1) $125 1Q24 2Q24 3Q24 4Q24 1
Slide 15: Strong Performance Driven by Increase Sales and Cost Efficiency
Strong Performance Driven by Increase Sales and Cost Efficiency Cash Flow Bridge 2Q 26 Net Inflows: Receivables from Lithium $ 60 million 1 Materials Sold 1 $27 Includes Prepaid Installments 2 of High-Grade Sales 4 $32 ($34) 3 Repayment of ST and LT Debt 2 $67 ($4) 1 $27 3 ($15) Upcoming Sales of Cu
Slide 16: 2Q Operational Highlights and Production and Capacity Outlook
2Q 26 Operational Highlights and Production and Capacity Outlook
Slide 17: Surpassed Targets of High Grade Lithium Oxide Production
Surpassed Targets of High Grade Lithium Oxide Production: Demonstrating Operational Efficiency Production Volumes by Quarter Mining Ramp Up Surpassed 33kt Guidance 2024 2025 1H 2026 1 Delivered 35kt in 2Q26 Precise (+6% vs. Guidance) Execution Industrial Production Cadence Executing as Planned
Slide 18: Continues Planned Execution of Fleet Upgrade During 3Q
Continues Planned Execution of Fleet Upgrade During 3Q 26 Delivered on 1H 26 targets for 40% increase in mining scale Fleet Upgrade Excavators (75t | 98t) 15% Trucks (60t | 75t) 7% Second Stage of Deployment of Large Equipment (75t Trucks/98t Excavators) Larger Machinery = More Productivity Maintain
Slide 19: New Pit Shell Design Enabled Access to High Grade Spodumene Ore
Reassessment of Geometry and New Pit Shell Design Enabled Access to a Large Amount of High Grade Spodumene Ore South Pit – Mine 1 Pit Shell Design New Previous Ore Body @ Li2O 1.4% Lithium Oxide Lithium Oxide ~200,000t ~100,800t Concentrate Concentrate 83% Spodumene Ore 1.1Mt Spodumene Ore 0.6Mt pag
Slide 20: Production Expansion Remains on Track
Production Expansion Remains on Track Forecasts pushed foward by three months Cash Flow Forecast (Plant 1) Production Forecast (Plant 1) Production Installed Capacity (US$ millions) 12 Months Plant 2 Plant 3 Estimated 12 Months FY 2027 Foward YE 2027 YE 2028 Estimated FY 2027 +43% $605 830,000 t +76
Slide 21: Conclusion
Conclusion
Slide 22: Sigma Lithium to Deliver Substantial Returns to Shareholders in 2026
Sigma Lithium to Deliver Substantial Returns to Shareholders in 2026 Significant Growth Profile of Production Significant Incremental Industrial Capacity: Building Two Plants During 27/28 Proven Execution Capabilities and Experienced Team Primarized Mining Operations Operational Resilience: Fi
Slide 23: Our Sector is AI-Enabled: Demand Growth from Battery Storage
Our Sector is “AI-Enabled” instead of “AI-Disrupted: Demand Growth from Battery Storage (AI Data Centers, Energy Security) SGML Share Price x Lithium Oxide Price AI is Unlocking a New Wave of Lithium Demand SGML close (USD/share) U.S. energy storage growth, projected at a 29% CAGR. Spodumene 6% Li
Slide 24: Low Costs and Strong Cash Generation = Positioned for a Re-Rating
Sigma: Low Costs and Strong Cash Generation = Positioned for a Re-Rating Producers Non-Producers $20.0 150 kt LCE 137 kt LCE (1) $1 8.0 Market Cap (US$ B) 130 kt LCE FY27 Production Capacity (kt LCE) $1 6.0 11 0 kt LCE $1 4.0 90 kt LCE 83 kt LCE $10.8 75 kt LCE $1 2.0 70 kt LCE $1 0.0 $9.2 62 kt LCE
Slide 25: Q&A
Q&A
Slide 26: Appendix
Appendix
Slide 27: Cashflow Generation Outlook
Cashflow Generation Outlook Low-cost position makes Sigma Lithium leveraged to lithium market recovery Estimated 12 Estimated Production Volumes and Costs per Tonne Estimated Estimated Month Period FY 2027 (US$/t) Plants 1 & 2 Plants 1, 2 & 3 (Plant 1) (Plant 1) Production Volumes 240,000t 330,000t
Slide 28: Net Suppliers Down 8% in 2Q QoQ to US$29M
Net Suppliers Down 8% in 2Q 26 QoQ to US$29M US$ Millions Net suppliers In dispute (1) (1) In dispute subject to reclassification(2) (2) Net days of payables (excluding in dispute) 89 days 83 days 82 days 80 days 78 days 58 days 57 days 29.6 M 19.2 M 27.9 M 12.9 M 25.6 M 10.8 M 2.0 M 6.3 M 9.4 M 2.0
Slide 29: Reported Cash Cost Better than Target
Reported Cash Cost Better than Target: Achieved “Economies of Scale” from Increased Production Volumes 2Q26 Unit Operating Cash Cost Bridge (Cost per Tonne) Highlights 1 2 Higher D&A Reflects Larger $17 Equipment Fleet Driven by increased $134 1 machinery in service to support higher $80 production
Slide 30: Strong Cash Flow Generating Capacity and Low Debt Levels Unlocks Funding Options
Sigma Lithium: Strong Cash Flow Generating Capacity and Low Debt Levels Unlocks Funding Options Australia 1 (1) Australia 2 (1) Sigma Lithium (2) AU$ Millions AU$ Millions US$ Millions $5,350M $78M 1.2x Net Debt/ EBITDA 5.9x Net Debt/ EBITDA $134M $120M $103M $901M ($14M) ($292M) Net Debt EBITDA Net
Slide 31: SIGMA
V\ 4 SIGMA LITHIUM