Ms. Ana Cabral reports

SIGMA LITHIUM SIGNS WITH A MAJOR BRAZILIAN BANK A US$100 MILLION COLLATERALIZED BANK GUARANTEE

Sigma Lithium Corp. has signed a $100-million (U.S.) collateralized bank guarantee with a major Brazilian bank. The bank guarantee is to be collateralized by its clients, through a blend of corporate guarantees, letters of credit and export receivables to be mutually agreed amongst the parties.

Summary

• Sigma Lithium signs a $100-million (U.S.) bank guarantee (bank collateral), fully collateralized by its clients through a blend of corporate guarantees, letters of credit and export receivables to be mutually agreed.
• This is a key milestone for the company to execute its growth plans in 2026 and finalize the construction of its second greentech industrial plant to double its production capacity from 270,000 tonnes to 520,000 tonnes annually.
• The bank collateral enables Sigma Lithium to access development bank financing made available to the company.
• Sigma Lithium is the engine of growth of Vale do Jequitinhonha, employing 13,000 people directly and indirectly, while benefitting an additional 21,000 people through its social inclusion programs.
  • The expansion will further promote the continuous economic growth of the Jequitinhonha Valley through a proportional increase in both employment and social inclusion beneficiaries.
  • Ten years ago, before the company became the largest lithium industrial mineral producer in the Americas, the region was the second poorest in the country and currently it grows by over 10 per cent annually.

The bank guarantee will support the construction and installation of Sigma Lithium's greentech industrial plant 2, increasing the company's nameplate annual production capacity of high-grade premium lithium oxide concentrate from 270,000 tonnes to 520,000 tonnes. Sigma Lithium's greentech industrial plant 2 will replicate the same environmentally sustainable technologies and processes currently used in the company's operating greentech industrial plant 1.

The bank guarantee is subject to, amongst other typical terms and conditions, the completion of the negotiation of definitive written agreement(s) with all the parties, which are to be consistent with the agreed terms contained in the preliminary agreement signed in the letter of intention .

Ana Cabral, co-chairperson of Sigma Lithium, said, "The support from our banking partners in Brazil and global clients for our lithium oxide underscores the strength of these relationships, the competitiveness of our industrialized product and their confidence in our management team and business strategy."

Ms. Cabral added: "Furthermore, this expansion reinforces our commitment to fostering sustained economic growth and prosperity in the communities of the Jequitinhonha Valley. Since Sigma Lithium's initial investments in the region dating back to 2012, when it was still a private company, we have dreamed of transforming the future of our neighbours in this historically impoverished region through the successful implementation of a globally competitive lithium industry. That prosperity became a reality 14 years later, driven by the significant economic development generated by the company's shareholders investments in building and implementating the fifth-largest global lithium industrial mineral complex in the Vale do Jequitinhonha, now the largest producer in the Americas of industrialized lithium oxide."

About Sigma Lithium Corp.

Sigma Lithium is the largest producer of lithium oxide concentrate in the Americas, and is dedicated to industrializing socially and environmentally sustainable lithium materials to supply global producers of batteries for energy security.

The company operates 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 dry stacking, the reuse of 100 per cent of water, zero use of toxic chemicals and the use of 100-per-cent renewable electricity. For more than two years Sigma Lithium has not experienced an accident with lost time.

Sigma Lithium currently has a nameplate capacity to produce 270,000 tonnes of lithium oxide concentrate on an annualized basis (approximately 38,000 to 40,000 tonnes of LCE (lithium carbonate equivalent) 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.

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