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Sigma Lithium CEO to Present at 2024 Bmo Mining Conference; Low Production Costs Reflected IN Guidance of Cif China Cash Operating Costs of $510/t

Marketing Announcement

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SIGMA LITHIUM CEO TO PRESENT AT 2024 BMO MINING

CONFERENCE; LOW PRODUCTION COSTS REFLECTED IN

GUIDANCE OF CIF CHINA CASH OPERATING COSTS OF $510/t

HIGHLIGHTS

• Sigma Lithium CEO Ana Cabral-Gardner to present at the 2024 BMO Global Metals, Mining &

Critical Minerals Conference, followed by a fireside Q&A with leading BMO research analyst Joel

Jackson

• Company is issuing pro forma “targeted ongoing run rate” cash unit operating cost guidance as

follows:

o $370/tonne at Plant Gate

o $420/tonne FOB Vitoria

o $510/tonne CIF China

• Sigma Lithium would like to invite investors to please kindly contact your BMO representative to

participate in the presentation in person or remotely.

São Paulo , Brazil – (February 26, 2024) – Sigma Lithium Corporation (“Sigma Lithium ” or the “Company”)

(NASDAQ: SGML, BVMF: S2GM34, TSXV: SGML) , a leading global lithium producer dedicated to powering the

next generation of electric vehicles with carbon neutral, socially and environmentally sustainable lithium

concentrate, announced today that Company Co-Chairperson and CEO Ana Cabral -Gardner is scheduled to

present at the BMO Global Metals, Mining & Critical Minerals Conference on Tuesday, February 27, 2024, at 11:15

am ET.

Ahead of the Conference, the Company has released a new slide deck to its investor relations webpage (here).

Within the presentation, the Company is issuing run rate production cost targets given its on going productivity

initiatives. This includes an expected cash unit operating cost at the plant gate of $370/tonne, $420/tonne FOB

Vitoria and a CIF China unit cost of $510/tonne.

ABOUT SIGMA LITHIUM

Sigma Lithium (NASDAQ: SGML, BVMF: S2GM34, TSXV: SGML) is a leading global lithium producer dedicated to

powering the next generation of electric vehicle batteries with carbon neutral, socially and environmentally

sustainable chemical-grade lithium concentrate.

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

supply chain for six years and it is currently producing Quintuple Zero Green Lithium from its Grota do Cirilo

Project in Brazil. Phase 1 of the project is expected to produce 270,000 tonnes of Quintuple Zero Green Lithium

annually (36,700 LCE annually). If it is determined to proceed after completion of an ongoing feasibility study ,

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

annually). The project produces Quintuple Zero Green Lithium in its state-of-the-art Greentech lithium plant that

uses 100% renewable energy, 100% recycled water and 100% dry-stacked tailings.

Please refer to the Company’s National Instrument 43-101 technical report titled "Grota do Cirilo Lithium Project

Araçuaí and Itinga Regions, Minas Gerais, Brazil, Amended and Restated Technical Report" issued June 12, 2023,

which was prepared for Sigma Lithium by Homero Delboni Jr., MAusIMM, Promon Engenharia; Marc -Antoine

Laporte, P.Geo, SGS Canada Inc; Jarrett Quinn, P.Eng., Primero Group Americas; Porfirio Cabaleiro Rodriguez,

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(MEng), FAIG, GE21 Consultoria Mineral; and Noel O'Brien, B.E., MBA, F AusIMM (the “Updated Technical

Report”). The Updated Technical Report is filed on SEDAR 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

Mathew DeYoe, EVP of Corporate Affairs & Strategic Development

+1 (201) 819-0303

[email protected]

Daniel Abdo, Director, Investor Relations

+55 11 2985-0089

[email protected]

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 Grot a 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, includi ng 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 inherent ly 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 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 accurat e, 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 re vise 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.