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Standard Lithium Signs LOI for Development of Continuously-Operating Demonstration Pilot Plant

Mergers & Acquisitions Metallurgy & Processing

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STANDARD LITHIUM LTD.

Suite 835, 1100 Melville Street

Vancouver, British Columbia

V6E 4A6

NEWS RELEASE

Standard Lithium Signs LOI for Development of Continuously-Operating

Demonstration Pilot Plant

January 17, 2018 Vancouver, BC – Standard Lithium Ltd. (“Standard Lithium” or the

“Company”) (TSXV: SLL) (OTCQX: STLHF) (FRA: S5L) is pleased to announce that the

Company has signed a non-binding Letter of Intent with a non-affiliated NYSE-listed company

whereby, subject to the execution of a definitive agreement on terms acceptable to both parties

(the “Definitive Agreement”) and obtaining necessary consents and permits, the Company will

design, build and operate a continuous demonstration scale pilot plant (the “Pilot Plant”),

adjacent to certain existing chemical production facilities located in southern Arkansas.

The Letter of Intent provides for a ninety-day period within which the Company and the other

party will negotiate a Definitive Agreement in respect of the proposed Pilot Plant. Under the

proposed Definitive Agreement, Standard Lithium would be permitted to build an in-place,

continuously operating, pilot plant to explore and demonstrate a modern, selective extraction and

purification process to produce battery-grade lithium products from a variety of brine streams,

including tail brines from the Smackover Formation , which is one of the world’s largest brine

deposits,.

In addition, Standard Lithium seeks to expand its lithium brine footprint through the evaluation

of opportunities to obtain additional brine leases or sources located in southern Arkansas, which

may allow for the transport and testing of multiple sources of Smackover brine in the Company’s

proposed Pilot Plant.

Standard Lithium’s Chief Executive Officer, Mr. Robert Mintak commented, “The facilities in

southern Arkansas where we may build the Pilot Plant are fed by a network of brine production

wells in southern Arkansas that access underground brine from the Smackover Formation and

transport it via an extensive system of pipelines and related infrastructure. Our relationship

with this other party is expected to provide Standard Lithium with access to ‘tail’ brines to test

for the viability of lithium extraction. In signing this letter of intent and negotiating quickly an

agreement for pilot scale testing, Standard Lithium expects to de-risk and expedite the initial

phases of resource assessment and project development while realizing significant reductions in

both the capital and time associated with permitting and drilling test wells.”

President and Chief Operating Officer, Dr. Andy Robinson also commented, “ When the

definitive agreement with the other party is signed, it will allow us to move very quickly from the

process testing work that we are currently performing at several locations, towards the design

and fabrication of the continuous Pilot Plant. The location of the Pilot Plant could not be more

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favourable, as we will have direct access to the tail brine feed into the site, all necessary utilities,

and the access to the services of an existing workforce of skilled and trained brine handling and

processing technicians and engineers, all within an existing permitted and fenced brine

processing site. This relationship aligns fully with Standard Lithium’s goal to demonstrate the

efficient and effective use of modern processing techniques to produce battery-grade lithium

products from large and previously overlooked brine resources”.

Proposed Transaction Terms

Pursuant to the terms of the Letter of Intent, completion of the Definitive Agreement will be

subject to a number of conditions, including completion of satisfactory due diligence

investigation in support of the feasibility of the Pilot Plant and obtaining all necessary consents

and permits. In consideration for the right to conduct a due diligence investigation Standard

Lithium has made a non-refundable deposit of US$100,000, and will make a further cash

payment of US$100,000 upon signing of the Definitive Agreement. The Company will pay

certain recurring fees if the Pilot Plant is constructed. No partnership is created by any of these

agreements with the other party, and the other party has no obligation to fund any of the capital

costs of the Company’s lithium-related activities.

Quality Assurance

Raymond Spanjers, Certified Professional Geologist (SME No. 3041730), is a qualified person

as defined by NI 43-101, and has supervised the preparation of the scientific and technical

information that forms the basis for this news release. Mr. Spanjers is not independent of the

Company as he is an officer in his role as Vice President, Exploration and Development.

About Standard Lithium Ltd.

Standard’s value creation strategy encompasses acquiring a diverse and highly prospective

portfolio of large-scale domestic brine resources, led by an innovative and results-oriented

management team with a strong focus on technical skills. The Company is currently focused on

the immediate exploration and development of the Bristol Dry Lake Lithium Project located in

the Mojave region of San Bernardino County, California; the location has significant

infrastructure in-place, with easy road and rail access, abundant electricity and water sources,

and is already permitted for extensive brine extraction and processing activities. The Company

is also commencing resource evaluation on up to approximately 33,000 acres of brine leases

located in the Smackover Formation.

Standard Lithium is listed on the TSX Venture under the trading symbol “SLL”; quoted on the

OTCQX under the symbol “STLHF”; and on the Frankfurt Stock Exchange under the symbol

“S5L”. Please visit the Company’s website atwww.standardlithium.com.

For further information, contact Anthony Alvaro at (604) 240 4793.

On behalf of the Board,

Standard Lithium Ltd.

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Robert Mintak, CEO & Director

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of

this release.

This news release may contain certain “Forward-Looking Statements” within the meaning of the

United States Private Securities Litigation Reform Act of 1995 and applicable Canadian

securities laws. When used in this news release, the words “anticipate”, “believe”, “estimate”,

“expect”, “target, “plan”, “forecast”, “may”, “schedule” and other similar words or

expressions identify forward-looking statements or information. These forward-looking

statements or information may relate to future prices of commodities, accuracy of mineral or

resource exploration activity, reserves or resources, regulatory or government requirements or

approvals, the reliability of third party information, continued access to mineral properties or

infrastructure, fluctuations in the market for lithium and its derivatives, changes in exploration

costs and government regulation in Canada and the United States, and other factors or

information. Such statements represent the Company’s current views with respect to future

events and are necessarily based upon a number of assumptions and estimates that, while

considered reasonable by the Company, are inherently subject to significant business, economic,

competitive, political and social risks, contingencies and uncertainties. Many factors, both

known and unknown, could cause results, performance or achievements to be materially different

from the results, performance or achievements that are or may be expressed or implied by such

forward-looking statements. The Company does not intend, and does not assume any obligation,

to update these forward-looking statements or information to reflect changes in assumptions or

changes in circumstances or any other events affections such statements and information other

than as required by applicable laws, rules and regulations.

Neither the Company, nor any other party makes any representations as to the value of any

rights associated with the letter of intent announced hereby, the availability of any particular

resource or minerals that might be used for lithium extraction, or the merits of any proposed

technology to extract the lithium. Readers are cautioned that a “Qualified Person” (as that

term is defined by National Instrument 43-101 – Standards of Disclosure for Mineral Projects)

has not done sufficient work to specify any mineral resource or reserves on any of the properties

associated with this project.