Sigma Lithium (NASDAQ: SGML) overturns Minas Gerais US$10m collateral risk
Rhea-AI Filing Summary
Sigma Lithium reports that a Court of Appeal judge in Minas Gerais has overturned a prior lower-court decision that had included the potential for a US$10 million legal collateral. The judge instead requested that the company fund an independent technical advisory firm to monitor operational impacts on nearby municipalities.
The ruling relied on 12 months of environmental monitoring data collected and verified by external experts, showing low levels of dust, vibrations, and noise in four neighboring communities. Sigma Lithium highlights that it operates 560% better than recommended standards for total suspended particles and 350% better for fine particles, with 95 noise measurement campaigns demonstrating compliance with Brazilian standards.
The company also reiterates its broader operating profile, including a nameplate capacity of 270,000 tonnes of lithium oxide concentrate per year (approximately 38,000–40,000 tonnes of LCE) at its Grota do Cirilo operation in Brazil and a Phase 2 expansion aiming to increase capacity to 520,000 tonnes.
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Key Figures
Key Terms
legal collateral financial
independent technical advisory firm technical
environmental monitoring data technical
nameplate capacity financial
forward-looking information regulatory
Zero Tailings strategy technical
UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT
OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR
15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of June 2026
Commission File Number: 001-40786
Sigma
Lithium Corporation
(Translation of registrant's name into English)
181,
Bay Street, Suite 4400
Toronto, Ontario, M5J 2T3, Canada
(Address of principal executive office)
Indicate
by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F [ ] Form 40-F [X]
EXHIBIT INDEX
| Exhibit | Description |
| 99.1 | Press Release dated June 9, 2026 |
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| Sigma Lithium Corporation | ||
| (Registrant) | ||
| Date: June 9, 2026 | /s/ Ana Cristina Cabral | |
| Ana Cristina Cabral | ||
| Chief Executive Officer | ||
SIGMA LITHIUM WINS IN STATE COURT OF MINAS GERAIS; OVERTURN OF UNWARRANTED LOCAL JUDGE DECISION
HIGHLIGHTS
· A Court of Appeal Judge in the Court of Justice of Minas Gerais state overturned a local lower court decision that included the potential for a legal collateral of US$10 million.
· The ruling was based on robust quantitative evidence presented by Sigma Lithium: one year of environmental data collected by third parties demonstrating the Company’s track record – low levels of dust, vibrations, noise, measured by independent experts in four neighbouring communities – in addition to other legal issues.
· The data-based defence presented by the Company debunked the baseless claims made by local prosecution and was accepted by the state court judge.
São Paulo, June 9, 2026 – Sigma Lithium Corporation (NASDAQ: SGML, TSX-V:SGML BVMF: S2GM34) (“Sigma Lithium” or the “Company”), the largest producer of lithium oxide concentrate in the Americas¹ and dedicated to industrializing socially and environmentally sustainable lithium materials to supply global producers of batteries for energy security, announces that a Court of Appeal Judge in the the Court of Justice of Minas Gerais state (“Court of Justice”) overturned a local lower court decision that included the potential for a legal collateral of US$10 million, as detailed in the Company’s announcement of May 18, 2026.
The Court of Justice asked the Company to fund the engagement of an independent technical advisory firm to monitor the impacts of Sigma Lithium operations on the residents of the local municipalities of Araçuaí and Itinga. The Company welcomed the requirement of the impact assessment study as an excellent opportunity to establish the facts of the matter through an independent evaluation.
Sigma Lithium’s legal counsel highlighted the discrepancy between the data presented by the prosecution and the evidence submitted by the Company in its defense. On June 2, Sigma Lithium publicly disclosed 12 months of environmental monitoring data, independently collected and verified by external experts through May 2026, demonstrating the Company’s environmental performance and track record: low levels of dust, vibrations, noise, monitored in four neighbouring communities.
· Dust: Sigma Lithium operates 560% better than recommended standards for total suspended particles, 350% better for particles of below 2.5 micrometers.
· Noise: 95 measurement campaigns conducted during night and day demonstrated compliance with Brazilian established standards.
| · | Vibrations: The level of vibrations measured in terms of velocity measured in millimeters per second against the frequency measured in Hertz was extremely low, barely registering on the seismograph scale, when set against the recommended limits. |
ABOUT SIGMA LITHIUM
Sigma Lithium Corporation (NASDAQ: SGML, TSXV: SGML, BVMF: S2GM34), (“Sigma Lithium” or “the Company”) is the largest producer of lithium oxide concentrate in the Americas¹ and dedicated to industrializing socially and environmentally sustainable lithium materials to supply global producers of batteries for energy security.
The Company runs one of the world’s largest lithium production sites—the fifth-largest industrial-mineral complex for lithium oxide concentrate—at its Grota do Cirilo operation in Brazil. Sigma Lithium is at the forefront of environmental and social sustainability in the electric battery materials supply chain. The Company’s Greentech Industrial Plant combines the reuse of 100% of water, zero use of toxic chemicals, zero tailings and the use of 100% renewable electricity. For more than two years Sigma Lithium has not experienced an accident with lost time.
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Sigma Lithium currently has a nameplate capacity to produce 270,000 tonnes of lithium oxide concentrate on an annualized basis (approximately 38,000–40,000 tonnes of LCE) at its mine and state-of-the-art Greentech Industrial Plant. The Company has initiated a Phase 2 expansion designed to close to double production capacity to 520,000 tonnes. For more information about Sigma Lithium, visit our website
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FOR ADDITIONAL INFORMATION PLEASE CONTACT
Anna Hartley, Vice President of Global Banking and Investor Relations
anna.hartley@sigmalithium.com.br
+44 7866 458 093
Mariana Bengtson, Investor Relations Manager
mariana.bengtson@sigmalithium.com.br
+55 11 9 2144 2750
Sigma Lithium
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Sigma Lithium |
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@sigmalithium |
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@SigmaLithium
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FORWARD-LOOKING STATEMENTS
This news release includes certain “forward-looking information” under applicable Canadian and U.S. securities legislation, including but not limited to statements relating to timing and costs related to the general business and operational outlook of the Company, the environmental footprint of tailings and positive ecosystem impact relating thereto, donation and upcycling of tailings, timing and quantities relating to tailings and Green Lithium, achievements and projections relating to the Zero Tailings strategy, achievement of ramp-up volumes, production estimates and the operational status of the Grota do Cirilo Project, and other forward-looking information. All statements that address future plans, activities, events, estimates, expectations, or developments that the Company believes, expects, or anticipates will or may occur is forward-looking information, including statements regarding the potential development of mineral resources and mineral reserves which may or may not occur. Forward-looking information contained herein is based on certain assumptions regarding, among other things: general economic and political conditions; the stable and supportive legislative, regulatory and community environment in Brazil; demand for lithium, including that such demand is supported by growth in the electric vehicle market; the Company’s market position and future financial and operating performance; the Company’s estimates of mineral resources and mineral reserves, including whether mineral resources will ever be developed into mineral reserves; and the Company’s ability to operate its mineral projects including that the Company will not experience any materials or equipment shortages, any labor or service provider outages or delays or any technical issues. Although management believes that the assumptions and expectations reflected in the forward-looking information are reasonable, there can be no assurance that these assumptions and expectations will prove to be correct. Forward-looking information inherently involves and is subject to risks and uncertainties, including but not limited to that the market prices for lithium may not remain at current levels; and the market for electric vehicles and other large format batteries currently has limited market share and no assurances can be given for the rate at which this market will develop, if at all, which could affect the success of the Company and its ability to develop lithium operations. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether because of new information, future events or otherwise, except as required by law. For more information
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on the risks, uncertainties and assumptions that could cause our actual results to differ from current expectations, please refer to the current annual information form of the Company and other public filings available under the Company’s profile at www.sedarplus.com.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.
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