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Lithium Americas Enters Collaboration Agreement with Arena Minerals

Partnerships & JV

Lithium Americas Enters Collaboration Agreement with Arena Minerals

VANCOUVER, British Columbia, May 24, 2022 -- Lithium Americas Corp. (TSX: LAC) (NYSE: LAC) ("Lithium Americas"

or the "Company") has entered a Pastos Grandes Technical Collaboration Agreement (“ Collaboration Agreement ”) with

Arena Minerals Inc. (TSX-V: AN) ("Arena"). The intention of the Collaboration Agreement is to share technical information and

explore opportunities for collaborating on potential development alternatives with the overall objective of optimizing the

production profile of the Pastos Grandes basin.

“Building our relationship with Arena Minerals is an indication of our commitment to expand and further develop our production

profile in Salta, Argentina,” commented Ignacio Celorrio, President, Latin America of Lithium Americas. “Arena’s Sal de la

Puna project is adjacent to our recently acquired 100%-owned Pastos Grandes project, and together, we will collaborate to

develop the basin in the most sustainable and efficient way for all stakeholders.”

“This Collaboration Agreement is a testament to the strong relationship Arena has with Lithium Americas, and the

commitment we share towards sustainable, low impact and environmentally sound development in the Pastos Grandes basin,”

commented William Randall, President and CEO of Arena. “Together, we can optimize resources and share technical

knowledge to accelerate development while working with the local communities and provincial agencies.”

The Collaboration Agreement shall be governed by a technical committee (the “ Technical Committee ”) comprising of three

members nominated by Lithium Americas, and three members nominated by Sal de la Puna Holdings (“ SdlPH”), which is

jointly owned by Arena (65%) and Ganfeng New Energy Technology Development (Suzhou) Co., Ltd. (“ Ganfeng Lithium ”)

(35%), (together the “Parties”).

The Technical Committee will consider ways in which the Parties can exchange information and ideas and otherwise

collaborate to expand the knowledge of the Parties regarding the geology and hydrogeology of the Basin and the technical

aspects of extracting, concentrating, and processing brine to produce lithium products from their respective properties. These

include:

• Exploring and developing optimal processing technologies, including:

◦ production of up to 35% lithium chloride (up to 6% lithium) directly from ponds with lithium chemical processing

off-site in northern Argentina;

◦ production of lithium carbonate from up to 35% lithium chloride versus using a liming process with the

construction of an on-site lithium carbonate plant; and

◦ potential alternative direct lithium extraction technologies;

• Developing a basin-wide resource model, including a dynamic hydrogeological model and water resources/sources

model;

• Developing an optimal brine production model from the combined tenements of SdlPH and Lithium Americas in the

Pastos Grandes basin, integrated with the basin-wide model and brine resources; and

• The coordination of any joint presentations and reports the Parties agree to make together to the mining, environmental

and water authorities, communities and any related stakeholder to the Parties’ project.

Information to be shared under the Collaboration Agreement includes environmental baseline data, drill hole and sampling

databases, processing methodologies and concentration paths, and existing extractive model, including resource and dynamic

brine models. However, neither Lithium Americas, Arena or SdlPH will provide, transfer, grant or license any intellectual

property to the other, including patents, inventions and know-how.

The Collaboration Agreement also includes the common use of infrastructure owned by both Lithium Americas and Arena, so

long as the use does not interfere with the operation of the respective projects. The infrastructure includes a fully equipped on-

site analytical laboratory, pilot ponding facilities, a pilot carbonate conversion plant and ancillary camp infrastructure.

ABOUT LITHIUM AMERICAS

Lithium Americas is focused on advancing lithium projects in Argentina and the United States to production. In Argentina,

Caucharí-Olaroz is advancing towards first production and Pastos Grandes represents regional growth. In the United States,

Thacker Pass has received its Record of Decision and is advancing towards construction. The Company trades on both the

Toronto Stock Exchange and on the New York Stock Exchange, under the ticker symbol “LAC”.

For further information contact:

Investor Relations

Telephone: +1-778-656-5820

Email: [email protected]

Website: www.lithiumamericas.com

FORWARD-LOOKING STATEMENTS

This news release contains “forward-looking information” and “forward-looking statements” (which we refer to collectively as

forward-looking information) under the provisions of applicable securities legislation. All statements, other than statements of

historical fact, are forward-looking information. Examples of forward-looking information in this news release include, among

other things, statements related to: plans to optimize the development of the Pastos Grandes project; expected plans to

expand and develop the Company’s production profile in Salta, Argentina; the expected benefits from collaboration under the

Collaboration Agreement, including sustainable and efficient development of the Pastos Grandes project, and the extent of

such collaboration by the parties; continued community and government support for the project, and for any proposals made

by Arena and the Company pursuant to the Collaboration Agreement; and the extent of information to be shared under the

Collaboration Agreement.

Forward-looking information is based upon a number of factors and assumptions that, if untrue, could cause the actual results,

performances or achievements of the Company to be materially different from future results, performances or achievements

expressed or implied by such information. Such information reflects the Company’s current views with respect to future events

and is necessarily based upon a number of assumptions that, while considered reasonable by the Company today, are

inherently subject to significant uncertainties and contingencies. These assumptions include, among others, the following:

expectations and anticipated impact of COVID-19 on advancing the Pastos Grandes project, pursuant to the Collaboration

Agreement or generally on the Company’s business; the Company establishing a development plan for the Pastos Grandes

project; capital expenditures and programs; mineral resources and mineral reserves estimation and development at the Pastos

Grandes project; government regulation of mining operations and treatment under governmental, taxation, capital control and

foreign exchange regimes, and any changes thereto; the future price of commodities, including lithium; the timing and amount

of future production; currency exchange, interest rates and capital controls; changes to the Company’s business plans;

stability and inflation related to the Argentine peso; and the effect of current or any additional regulations on the Company’s

operations; current technological trends; a cordial business relationship between the parties under the Collaboration

Agreement; the ability of the Company to fund, advance and develop its projects, including the Pastos Grandes project;

maintaining existing permits and receiving additional permits; continued demand for lithium and pricing thereof; the impact of

increasing competition in the lithium business, and the Company’s competitive position in the industry; general market and

economic conditions; a stable and supportive legislative, regulatory and community environment in the jurisdictions where the

Company operates; the impact of unknown financial contingencies, including litigation costs, on the Company’s operations;

estimates of mineral resources and mineral reserves, including whether mineral resources will ever be developed into mineral

reserves; reliability of technical data; the ability to develop and achieve production at any of the Company’s mineral exploration

and development properties; and successful integration of acquired business and projects.

Forward-looking information also involves known and unknown risks that may cause actual results to differ materially. These

risks include, among others, risks inherent in the development of capital intensive mineral projects; variations in mineral

resources and mineral reserves estimates; global demand for lithium; recovery rates and lithium pricing; risks associated with

successfully securing adequate financing; changes in project parameters and funding thereof; risks related to growth of lithium

markets and pricing for products thereof; changes in legislation, or governmental or community policy; changes in public

perception concerning natural resource projects generally and opposition thereto; political risk associated with foreign

operations; permitting risk, including receipt of new permits and maintenance of existing permits; outcomes of litigation and

regulatory processes concerning the Company’s projects; title and access risk; cost overruns; unpredictable weather and

maintenance of natural resources; unanticipated delays; intellectual property risks; currency and interest rate fluctuations;

operational risks; health and safety risks; cybersecurity risks; economic conditions; and, general market and industry

conditions. Additional risks, assumptions and other factors are set out in the Company’s latest management discussion

analysis and annual information form, copies of which are available on SEDAR at www.sedar.com.

Although the Company has attempted to identify important risks and assumptions, given the inherent uncertainties in such

forward-looking information, there may be other factors that cause results to differ materially. Forward-looking information is

made as of the date hereof and the Company does not intend, and expressly disclaims any obligation to, update or revise the

forward-looking information contained in this news release, except as required by law. Accordingly, readers are cautioned not

to place undue reliance on forward-looking information.