Sigma Lithium touts “Quintuple Zero” lithium oxide production at UN Climate Week New York

• Sigma Lithium highlighted its “Quintuple Zero” lithium oxide production model at UN Climate Week in New York.
• Key ESG claims include no tailings dams, no potable water use, no non-renewable power, no highly toxic chemicals.
• Reported more than 1,100 days without a lost-time injury in operations.
• Stated operations continue normally in Brazil, disputing media reports of suspended environmental licenses.
• Reported 19,000 jobs created in Brazil’s Jequitinhonha Valley, supporting 80,000 family members.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Sigma Lithium Corporation published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001292814-26-004722), on September 28, 2026, and is solely responsible for the information contained therein.