Sigma Lithium Announces Record Results for 1Q26: 39% EBITDA Margin; 26% Profitability; 21% of Total Debt Repaid

Sigma Lithium reported record Q1 2026 financial results on May 15, 2026. Revenue reached US$42 million, a 150% increase over Q4 2025, driven by sales of 23,000 tonnes of lithium oxide concentrate equivalent (5% Li2O) at a grade-adjusted realized price of US$1,790 per tonne SC5 (US$2,150 SC6). Gross margin was 61%, EBITDA margin 39%, and net margin 26%. Cash and equivalents stood at US$28 million, the highest since year-end 2024, while total debt was reduced by 21% year-over-year to US$134 million. Short-term export financing lines fell from US$102 million at mid‑2024 to just US$13 million. The company is on track for annualized production of 240,000 tonnes (Phase 1) and aims to expand to 520,000 tonnes (Phase 2) and 770,000 tonnes (Phase 3). Updated all‑in sustaining cost (AISC) guidance, reflecting higher diesel and currency costs, is US$710/t for Phase 1, US$620/t for Phases 1‑2, and US$610/t for all three phases. Strong cash‑flow projections were provided at lithium prices from US$1,500/t to US$2,500/t.

The Q1 2026 results are materially positive. They demonstrate the success of the mining operations restructuring that was undertaken in late 2025 and early 2026, which had temporarily depressed production to 183,000 tonnes in 2025. Revenue and margins exceeded what earlier guidance implied for a production of 220‑270kt at the low‑end lithium price of US$1,800/t; the realized price of US$1,790/t SC5 is well above the US$1,500/t scenario and the achieved margins are robust. The debt reduction continues ahead of schedule, with total debt now 33% lower than two years ago and expensive short‑term trade finance virtually eliminated. This aligns with management’s pledge in the Q4 2025 transcript to repay US$100 million of shareholder debt by December 2026. The company has also validated the “lithium fines” revenue stream, with a separate March 20, 2026 announcement indicating a US$20 million profit on an inaugural sale. The combination of restored production, high margins, and deleveraging makes this a clear upgrade to the investment case. The news is not merely an incremental update; it confirms that the company can be profitable at current lithium prices and fund expansion internally, materially de‑risking the story. However, it does not qualify as a “game changer” because no new, first‑time strategic cornerstone investor has been introduced and the production capacity is still ramping toward previously stated targets; the market had already partly priced in a recovery, as the stock rallied from US$16 to above US$32 between March and early May before the recent pullback.

Sigma Lithium operates the Grota do Cirilo lithium mine in the Vale do Jequitinhonha, Minas Gerais, Brazil. Its flagship asset is a series of high‑grade lithium pegmatite deposits mined at Mine 1. The Greentech Industrial Plant 1 processes ore into a premium, battery‑grade lithium oxide concentrate (approximately 5%–6% Li2O) using a dense‑media separation circuit that avoids chemical reagents and tailings dams. The plant currently has a nameplate capacity of 270,000 tonnes per year (equivalent to about 38,000–40,000 tonnes of lithium carbonate equivalent, LCE). The company is constructing a second Greentech plant to double capacity to 520,000 tpy, with a longer‑term phase 3 target of 770,000 tpy. A key innovation is the monetization of “lithium fines,” a low‑grade by‑product (approx. 1% Li2O) previously dry‑stacked as tailings, which is now sold to third parties for further processing.