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Sigma Lithium and LG Energy Solution Sign Milestone Six-Year Binding Term Sheet FOR Lithium Offtake Agreement

Mine Development & Operations Partnerships & JV

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SIGMA LITHIUM AND LG ENERGY SOLUTION SIGN MILESTONE SIX-YEAR

BINDING TERM SHEET FOR LITHIUM OFFTAKE AGREEMENT

HIGHLIGHTS

• Binding offtake term sheet signed between Sigma Lithium and LG Energy Solution to supply

Battery Grade Sustainable Lithium Concentrate through 2027, with start of commercial delivery

set for 2022.

• LG Energy Solution to purchase on a “take-or-pay” basis 60,000 tons per year of Battery Grade

Sustainable Lithium Concentrate for the first phase of Sigma Lithium’s production, increasing by

40,000 tons per year during the second phase of production, for a total purchase on a “take-or-

pay” basis of 100,000 tons per year.

• Pricing will be floating and linked to market prices for high purity lithium hydroxide.

• LG Energy Solution and Sigma mutually have agreed to optional additional offtake volumes of up

to 50,000 tons per year of Battery Grade Sustainable Lithium Concentrate.

VANCOUVER October 05, 2021-- Sigma Lithium Corporation (“Sigma Lithium”) (NASDAQ: SGML) (TSX-V: SGML),

dedicated to powering the next generation of electric vehicle batteries with environmentally sustainable and high-

purity lithium concentrate, announced the signing of a binding term sheet for an offtake agreement on a “take or

pay” basis (the “Offtake”) for the sale of 6% battery-grade high purity and environmentally sustainable lithium

concentrate (“Battery Grade Sustainable Lithium Concentrate”) to LG Energy Solution, Ltd (“ LGES”), one of the

world’s largest manufacturers of advanced lithium-ion batteries for electric vehicles.

The six-year LGES Offtake for Battery Grade Sustainable Lithium Concentrate scales from 60,000 tons per year in

2023 to 100,000 tons per year from 2024 to 2027 (“Guaranteed Take-or-Pay Quantity”) subject to Sigma Lithium

and LGES executing a mutually acceptable definitive documentation to implement the Offtake. Sigma Lithium

and LGES also agreed to negotiate each year, starting in 2022, an additional optional supply of Battery Grade

Sustainable Lit hium (“Optional Offtake Quantity ”), not otherwise committed in other Sigma Lithium offtake

arrangements, as per the table below.

2022 2023 2024 2025 2026 2027

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Guaranteed Quantity

(in dry metric tonnes)

0 60,000 100,000 100,000 100,000 100,000

Optional Quantity

(in dry metric tonnes)

15,000 15,000 50,000 50,000 50,000 50,000

The purchase price for the Battery Grade Sustainable Lithium Concentrate under the Offtake will be linked to

market prices for the high purity lithium hydroxide during the term of the Offtake.

The Offtake is intended to be legally binding on both Sigma Lithium and LGES, and is subject to, among other

things, completion of the negotiation of definitive written agreement(s), which are to be consistent with the

agreed terms contained in the binding term sheet.

“With the rapid growth of the EV battery market, securing large volumes of environmentally sustainable and high-

quality lithium materials is becoming one of the important sources of competitiveness in our industry,” said Mr.

Dong Soo Kim, Senior Vice President of Procurement Center at LG Energy Solution. “We are delighted to sign this

landmark offtake with Sigma Lithium, sourcing environmentally -friendly battery-grade sustainable lithium

concentrate directly from the upstream producer and collaborating with Sigma Lithium to make our battery

supply chain increasingly more sustainable through our shared focus on innovation and ESG.”

“Since 2018, Sigma Lithium has been producing battery-grade sustainable lithium concentrate at its on-site

demonstration pilot plant while executing our sustainability roadmap to support decarbonization and reach net

zero emissions by 2024,” said Ana Cabral -Gardner, Co-CEO, Sigma Lithium. “We believe this offtake will create

long-term value for all of our stakeholders. Sigma Lithium has been able to deliver large samples of one of the

purest, most environmentally and socially sustainable lithium concentrate s in the marketplace to potential

customers. Thus, our focu s on sustainability and the investments we made in our assets to develop an

environmentally friendly process to produce battery grade sustainable lithium concentrate, enables Sigma Lithium

to attain a leading industry position, supplying LG Energy Solution, the largest global producer of advanced

batteries for electric vehicles and green energy storage.”

“We are truly delighted to have the ability to provide LG Energy Solution with significant quantities of battery

grade sustainable lithium concentrate that will support the large-scale production of lithium-ion batteries

required to power the future of electric mobility and clean energy ,” added Cabral -Gardner. “ This offtake is

perfectly aligned with our strategy of creating direct commercial relationships with the largest Tier 1 battery

producers (who are the final end-users in the lithium supply chain), providing stability to our future cash flows .

Sigma Lithium’s production process is 100% powered by clean energy, does not utilize hazardous chemicals,

recirculates 100% of the water and dry stacks 100% of its tailings . We believe that sustainable, scalable and

reliable production of high-quality lithium will be essential to meeting demand from sustainable energy leaders

like LGES.”

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ABOUT SIGMA LITHIUM

Sigma Lithium is a Canadian company developing, with an environmental sustainably ESG focused strategy, the

largest hard rock lithium deposits in the Americas, located in its wholly owned Grota do Cirilo Project in Brazil (the

“Project”). The Company has been producing low carbon high purity lithium concentrate at an on -site

demonstration pilot plant (the “Pilot Plant”) since 2018. This pilot production has been an important part of the

successful commercial strategy of the Company , shipping samples of its low carbon “green & sustainable” high

purity lithium to leading global potential customers, for product certification and testing, with the goal of

participating in the rapidly expanding electric vehicle (“EV”) supply chain.

The Company is in pre -construction and detailed engineering of an environmentally friendly, fully automated,

dense media separator (“ DMS”) production plant, that will app ly proprietary algorithms to digitally control the

dense media. The production plant will be vertically integrated into the Company´s mining operations, exclusively

utilizing as feedstock the high purity spodumene ore with exceptional mineralogy from the P roject. The

production plant will process the spodumene ore into a high purity 6% battery -grade lithium concentrate

engineered to the specifications of its customers in the lithium-ion battery supply chain for EVs.

The Company continues to demonstrate its commercial and market relevance by significantly advancing its

strategic goals on three fronts: near-term production scheduled for 2022, completing the studies for the viability

of production expansion contemplated for 2023, and the determination of the u ltimate extent and unique high-

purity quality of mineral resources at the Company´s wholly -owned Grota do Cirilo Project, all while maintaining

its strategic leadership in ESG in the lithium supply chain.

In order to secure a leading position supplying the clean mobility and green energy storage value chains, the

Company has adhered consistently to the highest standards of ESG practices, which were established as part of

its core purpose at inception in 2012. The production process will be powered by clean energy and the Company

will use state -of-the art water recirculation circuits in its processing combined with dry stacking tailings

management. The DMS process of the production plant does not utilize hazardous chemicals, as a result its tailings

are 100% recyclable into ancillary industries, such as ceramics.

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FOR ADDITIONAL INFORMATION, PLEASE CONTACT

SIGMA LITHIUM INVESTORS:

Daniel Abdo

(Sao Paulo) +55 11 2985-0089

[email protected]

[email protected]

Vitor Ornelas

(Sao Paulo) +55 11 2985-0089

[email protected]

SIGMA LITHIUM MEDIA:

Colleen Robar

(United States) +1 313 207 5960

[email protected]

SIGMA LITHIUM SOCIAL MEDIA:

LinkedIn: @SigmaLithium

Instagram: @sigmalithium

Twitter: @SigmaLithium

FORWARD-LOOKING STATEMENTS

This news release includes certain "forward -looking statements" under applicable US and Canadian securities legislation including

statements relating to future ESG targets and the achievement of certain milestones, including in relation to offtake agreements

completion, the terms of the Offtake (including quantities), value creation, cash flows as a result of the Offtake and the execution of

definitive documentation reflecting the terms of the binding term sheet, relevant internal and organ izational approvals, production

estimates and other forward -looking statements. Forward -looking statements are necessarily based upon a number of estimates and

assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties, and other factors which may cause

the actual results and future events to differ materially from those expressed or implied by such forward-looking statements. All statements

that address future plans, activities, events, or developments that the Com pany believes, expects or anticipates will or may occur are

forward-looking information, including statements regarding the entering into of definitive documentation and terms thereof and benefits

of the Offtake may or may not occur. Forward -looking statements and information contained herein are based on certain factors and

assumptions regarding, among other things, , metal prices, exchange rates, taxation, the estimation, timing and amount of mineral

resources and reserves, future development and producti on, capital and operating costs, the availability of financing, the receipt of

regulatory approvals, environmental risks, title disputes, litigation risks, failure of plant, equipment or processes to operate as anticipated,

accidents, labour disputes, clai ms and limitations on insurance coverage and other risks of the mining industry, changes in national and

local government regulation of mining operations, and regulations and other matters including the COVID -19 pandemic. There can be no

assurance that such statements will prove to be accurate, 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 statements. The Company disclaims any

intention or obligation to update or revise any forward -looking statements, whether as a result 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 a ctual results

to differ from current expectations, please refer to our public filings available 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 Ven ture

Exchange) accepts responsibility for the adequacy or accuracy of this news release.