Sigma Lithium Corporation Q1 FY2026 earnings call

Operational Efficiency and Sustainability

• Completed mining fleet upgrades on a record timetable, with new larger hauling equipment delivering a 50% increase in total haulage capacity matched to the GreenPak 3.0 processing plant. The company has achieved 1,010 consecutive days of zero accidents and zero fatalities in 14 years of operation, with a total recordable frequency incidence rate (TRFIR) of zero.
• Maintains 100% sustainable production practices: 100% renewable electricity use, 100% water recycling and reuse, no hazardous chemicals, and no fading tailings dams. The company is on track to reach zero tailings this year by selling all processed low-grade tailings as valuable lithium product, with mined rock piles actively reclaimed and integrated into the local landscape.
• Q1 2026 production reached 20,000 tons of lithium oxide as of May 2026, on track to hit the 33,000 ton planned target for Q2 2026. Production ramp-up proceeded through sequential shift mobilization, with personnel completing training for full four-shift operation.

Financial Resilience and Discipline

• Deleveraged significantly through the lithium industry down-cycle, cutting total debt by 33% in two years while improving margins from 23% gross margins in Q1 2024 to 61% in Q1 2026, positioning the company to capture excess returns in the current lithium bull market.
• Signed two major prepayment off-take agreements: a $96 million agreement for 70,500 tons to fund mining upgrades and working capital, and a signed $50 million agreement to repay half of the company's short-term total debt due in December 2026. The company is in active negotiations for an additional $50 million prepayment off-take to cover the remaining outstanding short-term debt, and for $100 million in long-term prepayments starting 2027 to fund growth capex.

Growth Strategy

• Pre-existing site infrastructure was built in 2022 to support three production lines, so only core equipment needs to be ordered and assembled for the planned second and third production plants, significantly reducing construction timelines. Plant 2 construction will resume in the second half of 2026, with each new plant costing approximately $100 million.

Sigma Lithium operates as a single integrated lithium production segment for this quarter. Total Q1 2026 revenues increased 48% quarter-over-quarter compared to Q3 2025, and 150% compared to the immediate prior quarter. The company achieved 61% gross margins, 39% unadjusted EBITDA margins, 33% operating margins, and 26% net profit margins in Q1 2026, all the highest in company history. As of May 15, 2026, the company held $28 million in cash, with total debt reduced to $134 million from $201 million in Q1 2024, a 33% total reduction over two years and 21% over the last 12 months. Short-term trade debt was cut by 75% year-over-year, from $90 million to $13 million. High-purity lithium hydroxide is the core product, with a new low-grade lithium oxide product line launched this quarter that contributed to cash inflows; low-grade product sales are funding ongoing mining operational upgrades.

• Maintained full-year 2026 production guidance of 200,000 tons of lithium oxide, with guidance for 240,000 tons of lithium oxide over the 12-month period from Q2 2026 through Q1 2027.
• After completion of Plant 2, total annual production capacity will double to 520,000 tons of lithium oxide by mid-2027. After completion of Plant 3, total annual capacity will reach 770,000 tons. Plant 3 construction can proceed either in parallel with Plant 2 or sequentially, depending on funding availability which management does not expect to be an issue.
• The company's 12-month cash flow forecast for the single operating plant ranges from $130 million at a lithium price of $1,500 per ton to $330 million at $2,500 per ton (20% below current spot prices of $2,900-$3,000 per ton, making this a conservative forecast). After Plant 2 is completed, annual cash flow is forecast to range from $320 million to $760 million across the same price scenarios.

No specific material risks or operational failures were explicitly discussed during the call. Management noted that current lithium prices are higher than the top end of their cash flow forecast, and all near-term debt repayment and growth capex is either already funded or supported by active off-take negotiations with strong customer interest. The only implicit risk noted is potential delays in equipment delivery for Plant 2, which management accounted for by building a conservative 12-month timeline for commissioning.

Q: How does the company achieve such a large month-over-month production jump from 13,000 tons in June to 24,000 tons in July as implied by guidance? / A: The large increase comes from the staged mobilization of the new larger mining fleet. After equipment arrived at the site, personnel completed training and shifted from one shift to two, then to full four-shift (including night shift) operation over the course of the quarter, leading to a continuous ramp-up in production that aligns with the guided 33,000 ton Q2 total production target.

Q: What is the detailed timeline for Phase 2 and Phase 3 capacity expansion, and what is the current status of construction? / A: Civil construction for Phase 2 is more than 50% complete, with most infrastructure already in place from the initial first plant build. Construction will resume in the second half of 2026, with a 12-month timeline for equipment delivery, assembly, and commissioning, so Phase 2 is expected to be fully operational by mid-2027. Phase 3 can be built in parallel or sequentially; existing infrastructure already supports both expansions, and the $100 million construction cost for Phase 3 is not expected to create funding challenges.

Q: Will future off-take agreements include floor price protections like those recently signed by Australian producers, and what is the status of current off-take negotiations? / A: While Sigma could secure floor price provisions, the company does not need them due to its very low production cost position. Management prioritizes securing high prepayment amounts while committing less future production, rather than trading lower pricing for downside protection. Current negotiations include an additional $50 million prepayment to cover remaining short-term debt due in December 2026, and $100 million in long-term prepayments for 2027+ production to fund growth capex, with strong customer demand driven by broad-based lithium demand growth across EVs, energy storage, and other electrified sectors.

Q: What is the sales status, pricing, and cash flow potential of the company's 300,000 ton inventory of low-grade lithium oxide intermediate? / A: The 300,000 ton low-grade inventory is priced at $77-$80 per ton ex-works, linked to Shanghai Metals Market DSO benchmarks. Deliveries are scheduled to start in Q3 2026, and management will decide on full sales of the inventory once deliveries commence. The company generates 250,000-300,000 tons of this low-grade material annually, so this can become an ongoing source of incremental cash flow if current robust pricing and demand hold.