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Sigma Lithium Partnering with Leading Global Research Institutions to Sponsor the Aspen Institute - Columbia University Energy Forum

Corporate Updates

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SIGMA LITHIUM PARTNERING WITH LEADING GLOBAL

RESEARCH INSTITUTIONS TO SPONSOR THE ASPEN

INSTITUTE - COLUMBIA UNIVERSITY ENERGY FORUM

VANCOUVER, CANADA – (June 13, 2023) – SIGMA Lithium Corporation (“Sigma Lithium” or the “Company”)

(NASDAQ: SGML, TSXV: SGML) , dedicated to supplying the next generation of electric vehicles with

environmentally sustainable and high-purity lithium, is pleased to announce its official sponsorship of The Aspen-

Columbia Global Energy Forum , a collaborative effort between The Aspen Institute’s Energy & Environment

Program and The Center on Global Energy Policy. Sigma Lithium is honored to partner with The Aspen-Columbia

Global Energy Forum which gathers leaders from around the world representing a range of i ndustries,

governments, thought leaders, and global institutions to discuss global energy transitions, markets, geopolitics,

and security. Sigma Lithium’s participation in the three-day Aspen-Columbia Global Energy Forum, taking place in

Paris, France from June 11 -13, 2023 , represents another milestone in the company’s commitment to the

environmental sustainability of the lithium mining industry through innovation and global collaboration.

Sigma Lithium CEO and Co -Chairperson Ana Cabral -Gardner said the following about this important

partnership: “We are honored to join the group of corporate sponsors partnering with the Aspen Institute and

Columbia University. As the urgency of climate chan ge and its far-reaching implications continue to grow, this

collaboration between public and private sectors to provide solutions for greater environmental sustainability

in the energy transition is of critical importance , as it increases dialogue and unde rstanding. Successfully

navigating the implementation of new industrial and trade policies , as well as future C -bans by the large

consumer countries, is one of the greatest challenges for global suppliers of battery materials.”

ABOUT SIGMA LITHIUM

Sigma Lithium (NASDAQ: SGML, TSXV: SGML) is a company dedicated to powering the next generation of

electric vehicle batteries with environmentally sustainable and high-purity lithium.

Sigma Lithium has been at the forefront of environmental and social s ustainability in the EV battery materials

supply chain for six years and it is currently producing Green Lithium from its Grota do Cirilo Project in Brazil.

Phase 1 of the project is expected to produce 270,000 tonnes of Green Lithium annually (36,700 LCE annually).

Phase 2 & 3 of the project are expected to increase production to 766,000 tonnes annually (or 104,200 LCE

annually), assuming the detailed engineering workstream and FEL3 CAPEX assessment currently being

conducted by DRA supports an investment decision. The project produces Green Lithium in a state-of-the-art

Greentech lithium plant that uses 100% renewable energy, 100% recycled water and 100% dry-stacked tailings.

Please refer to the Amended and Restated Technical Report, which is filed on SEDA R and is also available on

the Company’s website.

For more information about Sigma Lithium, visit https://www.sigmalithiumresources.com/

FOR ADDITIONAL INFORMATION PLEASE CONTACT

Jamie Flegg, Chief Development Officer

+1 (647) 706-1087

[email protected]

Daniel Abdo, Chief Communications Officer

+55 11 2985-0089

[email protected]

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Sigma Lithium

Sigma Lithium

@sigmalithium

@SigmaLithium

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 Tai lings

strategy, achievement of ramp-up volumes, production estimates and the operational status of the Groto 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 de mand 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 de veloped 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 labour 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 invol ves 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 batte ries

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 ac tual 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 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.sedar.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.