Sigma Lithium Confirms Its Mining and Industrial Operations Remain Unaffected by a Preliminary Judicial Ruling Issued Without Due Process

Sigma Lithium confirms that its mining and industrial activities continue to operate and that the Company remains focused on advancing its expansion plans and expecting to deliver 240,000t of lithium oxide concentrate within 12 months and 330,000t in FY 27. The Company clarifies that it has not received any legal communication in connection with a preliminary judicial ruling issued without due process, allegedly suspending the Company's environmental licenses. Reportedly issued by the courts of Teofilo Otoni, a town over 300km away from Vale do Jequitinhonha and Sigma Lithium's operations, which support 19,000 job positions and 80,000 family members. Sigma Lithium believes this preliminary ruling is in dissonance with Brazil's strong rule of law, as due process has not been followed. The Company has taken appropriate measures during the recess of the judiciary over a three-day national holiday and will begin its legal defense as soon as the courts resume regular operations on September 8. Sigma Lithium vehemently denies media reports stating that this preliminary ruling would overrule the Company's recent TAC Agreement with the Minas Gerais State Authorities. The Company remains fully committed to the highest standards of environmental stewardship, regulatory compliance and respectful engagement with neighbouring communities in Vale do Jequitinhonha.

Sigma Lithium Corporation (NASDAQ: SGML) (ASX: SAU) (TSXV: SGML) (BVMF: S2GM34) ("Sigma Lithium" or the "Company"), the largest producer of industrial-mineral lithium oxide concentrate in the Americas and dedicated to supplying global producers of batteries for energy security with sustainable and traceable lithium materials, confirms that its mining and industrial activities continue operating and that the Company has not received any legal communication regarding a preliminary judicial ruling issued without due process, allegedly suspending its environmental licenses. Sigma Lithium remains focused on scaling up its mining operations to advance its expansion plans and expecting to deliver 240,000 tonnes of lithium oxide concentrate within 12 months and 330,000 tonnes in FY 27, as per its recent announcement on the closing of a successful agreement with the Minas Gerais State Authorities to resume activities ("TAC Agreement"). This preliminary ruling suspending the Company's environmental licenses was reported to have been issued during a recess of Brazilian courts in the courts of the town of Teofilo Otoni - over 300km away from Vale do Jequitinhonha and Sigma Lithium's operations, which support 19,000 job positions and their approximately 80,000 family members.

Sigma Lithium clarifies that it has not received any legal communication regarding this preliminary ruling. The Company believes this ruling is unwarranted and in dissonance with Brazil's strong rule of law, as due process has not been followed. The Company has taken appropriate measures during the recess of the judiciary over a three-day national holiday and will begin its legal defense as soon as the courts resume regular operations on September 8. This preliminary ruling includes the potential for a daily fine that would only be due only in the event the charges resulted in a final negative ruling - this would require the full due legal process to be completed, including rights of appeal in the appropriate federal courts, including the Supreme Tribunals. The other elements of the preliminary ruling would also not be expected to be enforced until the completion of full due legal process. Legal jurisprudence for similar cases indicates a timeline of multiple years until this happens. As such, no payments would be due or required. Sigma Lithium has consistently acted in a transparent manner with federal, state and municipal authorities and has provided extensive technical, environmental and quant...