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Sigma Lithium (SGML) Q2 FY26 earnings call: guidance and Q&A

Earnings call· Jun 2026 (Q2 FY26)· Materials· Aug 14, 2026

Source: earnings call transcript

Executive summary

Sigma Lithium Q2 FY26 — Record Production, Margins, and Lowered Cost Guidance

Sigma Lithium delivered a strong second quarter, marked by record production volumes and industry-leading margins, driven by operational efficiencies and cost control. The company is advancing its growth strategy to significantly expand capacity by 2028, capitalizing on robust lithium market demand. While facing a temporary operational suspension, management is confident in its financial position and ability to resolve the situation.

Highlights

5
  • Achieved record production of 35,400 tonnes of lithium oxide concentrate in Q2 FY26, a 52% increase over Q1.

  • Delivered a record 47% EBITDA margin and maintained a high 60% gross margin due to disciplined cost control.

  • Generated $27 million in cash from operations during the first half of the year.

  • Lowered FY26 all-in sustaining cash cost guidance to $668 per tonne, reinforcing cost leadership.

  • Repaid 25% of total debt in the last year, deleveraging the balance sheet by 43% over the last two years.

Concerns

2
  • Experienced a temporary suspension of mining and processing operations due to TAC negotiations, with an uncertain restart timeline (best case next week, worst case 2 weeks).

  • Analyst noted $13 million cash flow in Q2, which management clarified was 'more' but with $27 million sold not yet converted to cash.

Guidance & targets

CategoryTargetConfidence
All-in sustaining cash costs
$668 per tonne
high materiality
High
Total cash cost
$620 per ton
medium materiality
High
Production forecast (Plant 1)
240,000 tonnes of high-grade lithium concentrate per year
high materiality
High
Production forecast (Plant 1, all circuits)
330,000 tonnes per year
high materiality
High
Installed capacity (with Plant 2)
580,000 tonnes of high-grade lithium concentrate per year
high materiality
High
Installed capacity (with 3 plants)
830,000 tons of installed capacity for production
high materiality
High
Cash flow forecast (Plant 1, 12 months forward, $1,500/ton)
$166 million
medium materiality
Medium
Cash flow forecast (Plant 1, 2027 production, $1,500/ton)
$360 million
medium materiality
Medium
Cash flow forecast (Plant 1, 12 months forward, $2,500/ton)
$235 million
medium materiality
Medium
Cash flow forecast (Plant 1, 2027 production, $2,500/ton)
$0.5 billion
medium materiality
Medium

Deals & partnerships

Undisclosed 1-year agreement for 70,500 tons of lithium concentrate $96 million 1 year

Offtake prepayment agreement.

Undisclosed 3-year agreement for 40,000 tons per year of lithium concentrate, currently being increased $50 million 3 years

Offtake prepayment agreement. The amount of this offtake is being increased due to exceptional ramp-up.

Risks & headwinds

Temporary suspension of mining and processing operations Current

Operations suspended

Mitigation:Negotiating with state of Minas Gerais for full clearance of alleged false accusations; aiming for restart within 1-2 weeks.

Allegations by local inspectors Current

Mostly false acquisitions executed by local inspectors

Mitigation:Negotiating strict terms for agreement to be cleared of any wrongdoing, not just a settlement.

What to watch in Q3 FY26

Mine Operations Restart

Next quarter
Current Temporarily suspended
Target Full mining and industrial operations resumed

Why it matters

Essential for production volumes and revenue generation, directly impacting financial performance.

Best case will be to restart next week. Worst case restart, I think it would take about 2 weeks.

Find out whether SGML delivers this. Inve re-checks your case every morning.

Q&A highlights

What was the exact production of normal and lower-grade concentrate in Q2? What is the expected cash flow/burn if the mine does not restart for the rest of Q3? What are the best and worst-case scenarios for mine restart and ramp-up time?

Q2 production was entirely high-grade material, with lower-grade material produced but not sold, to be sold in Q3. Approximately $60 million in cash from Q2 sales is expected to be received in Q3. The best-case scenario for mine restart is next week, and the worst case is two weeks, with negotiations focused on full clearance of alleged false accusations.

“Best case will be to restart next week. Worst case restart, I think it would take about 2 weeks.”

asked by Joel Jackson · answered by Ana Cabral Gardner

2 min read 6 chapters

Detailed narrative

Operational Excellence and Cost Control

Sigma Lithium achieved record operational metrics in Q2 FY26, including 35,400 tonnes of lithium oxide concentrate production, a 52% increase over Q1. This was supported by disciplined cost control, resulting in a record 47% EBITDA margin and maintaining a 60% gross margin. The company's all-in cash costs were $668 per tonne, positioning it as a low-cost leader with significant resilience and competitive advantage.

Mine Primarization and Fleet Upgrade

The company successfully primarized its mining operations, deploying larger equipment like 75-ton trucks and 98-ton excavators to increase haulage capacity by 40%. A new pit shell design unlocked an 83% larger block of high-grade spodumene ore, totaling 1.1 million tonnes at 1.4% grade. This enables the industrial plant to operate at full capacity, utilizing both its main and reprocessing circuits to produce 200,000 tons of lithium oxide concentrate from this block.

Production Capacity Expansion Plans

Sigma Lithium plans significant capacity expansion, targeting 330,000 tonnes per year from Plant 1 by the end of 2027, utilizing all circuits including the recirculation circuit. With the construction of Plant 2, installed capacity is expected to reach 580,000 tonnes per year by the end of 2027. The company projects 830,000 tonnes per year of installed capacity with Plant 3 by the end of 2028, with flexibility to greenlight Plant 2 and potentially Plant 3 simultaneously.

Financial Discipline and Debt Reduction

The company generated $27 million in cash from operations in H1 FY26 and has significantly deleveraged its balance sheet, repaying 25% of its total debt in the last year and 43% over the last two years. This strong financial position, combined with robust cash generation, supports future growth initiatives and provides resilience across lithium market cycles without the need for additional capital.

Market Outlook and Strategic Positioning

Management highlighted a robust lithium market driven by increasing demand from battery storage for AI data centers and energy security. Global LCE demand is projected to grow by 900,000 tons from 2025 to 2026 and reach 5 million tonnes by 2035. Sigma Lithium, with its low-cost position and planned capacity expansion to 830,000 tons per year by 2028, expects to supply approximately 2% of this demand, positioning itself for a significant market re-rating.

Temporary Operational Suspension and Resolution

The company experienced a temporary suspension of mining and processing operations related to TAC negotiations. Management stated that disclosure was immediate and that they are negotiating from a position of strength, aiming for a full clearance of alleged false accusations by local inspectors. While mining is suspended, the company continues to process and ship existing inventory of 'low-grade high purity' material, demonstrating operational resilience.

Summary of the company's earnings call; see how call summaries are prepared. Not investment advice.