Sigma Lithium Announces Additional Sale of 150,000t plus 350,000t Optional of High Purity Lithium Fines; Production-Backed Revolver of US$96 Million

Sigma Lithium Corporation has announced a significant commercial milestone with the sale of 150,000 tonnes of high purity lithium fines at US$140 per tonne, delivered to the port of Vitoria. The agreement includes an option to sell an additional 350,000 tonnes at market prices, providing substantial volume flexibility to capitalize on favorable market conditions. This low-grade product represents a 'sustainability reward' for shareholders, as it monetizes material that would traditionally be considered waste through the company's innovative dense media separation technology.

The commercial success demonstrates the quality of Sigma Lithium's processing capabilities, with clients achieving up to 60% recovery rates when reprocessing the low-grade material into concentrate containing over 4% lithium oxide content. This reprocessed material commands approximately US$1,370 per tonne according to Shanghai Metals Market pricing. The Low Grade Product sale could generate proceeds equivalent to selling 70,000 tonnes of the company's premium high-grade lithium oxide concentrate.

Simultaneously, Sigma Lithium activated a US$96 million production-backed revolving credit facility with a leading battery materials supply chain company. This unsecured facility provides for the supply of 70,500 tonnes of high-grade lithium concentrate during 2026, with US$8 million prepayments occurring 30 days before each production and delivery cycle. The pricing mechanism preserves full exposure to lithium price upside while providing near-term liquidity support.

This dual announcement reinforces Sigma Lithium's position as a significant lithium producer operating Brazil's fifth-largest industrial-mineral complex for lithium oxide concentrate. The company's Greentech Industrial Plant combines environmental sustainability with commercial viability, utilizing 100% renewable electricity and zero toxic chemicals while maintaining a nameplate capacity of 270,000 tonnes annually. Construction of a second plant to double production capacity is already underway, positioning the company to capitalize on growing electric vehicle battery demand.