Smackover Lithium Announces Positive Definitive Feasibility Study Results for its South West Arkansas Project

LEWISVILLE, Ark., Sept. 03, 2025 (GLOBE NEWSWIRE) -- Smackover Lithium, a Joint Venture (“JV”) between Standard Lithium Ltd. (“Standard Lithium” or the “Company”) (TSXV: SLI) (NYSE.A: SLI) and Equinor (“Equinor”), announced today the positive results of a Definitive Feasibility Study (“DFS”) for its South West Arkansas (“SWA”) project (the “Project” or “SWA Project”). All figures are in US dollars unless otherwise stated. All terms not otherwise defined have the meaning given to them under the CIM Definition Standards for mineral resources and mineral reserves. DFS Highlights: First production targeted in 2028. Projected initial production capacity of 22,500 tonnes per annum (“tpa”) of battery-quality lithium carbonate (“Li2CO3”) for the Project, marking the first commercial lithium production in the Smackover Formation.20-year plus operating life. Detailed Resource and Reserve modelling supports a production plan with average lithium concentration of 481 mg/L, underpinning a minimum 20-year operating life with ample opportunity for significant further expansion.Robust project economics. Unlevered pre-tax NPV of $1.7 billion and IRR of 20.2%, assuming a discount rate of 8% and a lithium carbonate price of $22,400/t (average of Fastmarket’s 20-year forward pricing curve for battery-quality lithium carbonate).Competitive OPEX. Average cash operating costs of $4,516/t over the operating life and average all-in costs of $5,924/t.Total CAPEX of $1.45 billion. All-in Class III capex estimate of $1.45 billion includes a 12.3% Monte Carlo risked contingency. This is informed by an 18-month detailed front-end engineering design (“FEED”) process which has yielded capital definition well beyond typical DFS studies. Conservative adoption of pilot and demonstration plant learnings used in FEED results in improved capital intensity expected on future expansion phases.Increased exploration activities support better Resource definition. Since completion of the Prefeasibility Study (“PFS”), the JV has re-entered wells and drilled a new in-fill well to support upgrading the Resource and modeling Proven and Probable Reserves. The Total Measured and Indicated Resource is 1,177,000 tonnes lithium carbonate equivalent (“LCE”) at an average concentration of 442 mg/L for 0.50km3 of brine volume, and Proven Reserves are 447,000 tonnes LCE at an average concentration of 481 mg/L for 0.20km3 of brine volume.First commercial Direct Lithium Extraction (“DLE”) in United States. Smackover Lithium is licensing Koch Technology Solutions’ (“KTS”) Lithium Selective Sorption (“LSS”) process for the initial phase of the Project, which includes performance guarantees. Opportunity exists for further operational and cost improvement on future expansion phases with regional exclusivity for the technology in the Smackover under a joint development agreement (the “Joint Development Agreement”). Dr. Andy Robinson, President and COO of Standard Lithium stated, “The robust economics from our SWA Project DFS confirm what we’ve known for a long time – that this is a world class asset and opportunity. Through years of extensive testing and development we have substantially de-risked the process technology and increased our confidence in Project execution. We are well-positioned to move the Project towards a Final Investment Decision (“FID”) and are excited by the prospect of being a domestic champion for securing critical minerals production in the United States.” Allison Kennedy Thurmond, VP for US Lithium at Equinor added, “The completion of the DFS is an important and exciting milestone for our SWA Project. This third-party economic and technical assessment further validates the potential of our Project and allows us to continue progressing towards a future FID.” Project Overview Smackover Lithium, a 55:45 owned JV between Standard Lithium and Equinor is developing a greenfield lithium extraction and chemicals production facility in the southwestern region of Arkansas. The Project is located approximately 15 miles (24 kilometers) west of Magnolia in Columbia County and 7 miles (11 kilometers) south of Lewisville in Lafayette County. The SWA Project encompasses approximately 30,000 acres of brine leases in the region, and the upgraded Resource in the DFS considers this total area. The first commercial phase of the Project is focused on the approved Reynolds Brine Unit (see news release dated 24th April 2025) in the southern portion of the total Project area (see Figure 1). The DFS Project economics are focused on this initial phase of development, but the JV is planning to develop additional phases of the Project throughout the total Project area. The SWA Project is intended as the first of several projects to be developed by the JV throughout the Smackover Region, and it is envisaged that the major design decisions and learnings from this first greenfield facility will form the basis for future expansion phases or projects. The Project team consciously used conservative adoption of pilot and demonstration plant learnings during the FEED design phase for this Project. As such, certain process redundancies, resource producibility and operating practice assumptions have been utilized throughout in order to ensure robustness. It is expected that learnings from this first commercial phase will result in reduced capital intensity and operating costs for future projects developed by the JV in the Smackover Formation. The initial phase of the SWA Project as illustrated is projected to produce battery-quality lithium carbonate with 22,500 tpa of total production capacity over a 20-year operating life. Highlights from this initial phase of production are provided in Table 1 below. Table 1: Definitive Feasibility Study Highlights Annual Production Capacity of Li2CO3tpa[1]22,500[2]Modeled Plant Operating Lifeyears20[2]Brine Flowrate at Start of Productionbbl/d[3]148,000Average Brine Flowrate over Modeled Plant Operating Lifebbl/d[3]168,000Lithium Grade at Start of Productionmg/L549Average Lithium Grade over Plant Operating Lifemg/L481Total CAPEX$ millions1,449[4,5]Average Annual Cash OPEX$/t4,516Average Annual All-in OPEX$/t5,924[6,7]Selling Price$/t22,400[8]Discount Rate%8.0Net Present Value (NPV) Pre-Tax$ millions1,666Net Present Value (NPV) After-Tax$ millions1,275[9]Internal Rate of Return (IRR) Pre-Tax%20.2Internal Rate of Return (IRR) After-Tax%18.2[9] Notes:All model outputs are expressed on a 100% ownership basis with no adjustments for project financing assumptions. Standard Lithium’s economic interest in the Project is 55%. Any discrepancies in the totals are due to rounding effects.[1] Tonnes (1,000 kg) per annum.[2] Plant design and financial modelling based on 20-year economic life. Proven and Probable Reserves together support a 40-year operating life.[3] Barrels per day. 1 cubic meter per hour = 151 barrels per day.[4] Capital Expenditures include 12.3% contingency determined with Monte Carlo Risk analysis.[5] No inflation or escalation factor has been applied for the economic modelling.[6] Includes operating expenditures, royalties, sustaining capital and closure costs.[7] Royalties include quarterly gross lithium royalty of 2.5% as approved by the Arkansas Oil and Gas Commission (“AOGC”), an additional brine fee of $65/acre per year and override fees payable on certain optioned brine leases.[8] Selling price of battery-quality lithium carbonate based on a flat assumed price of $22,400/t over total Project lifetime. Represents average of 20-year forward pricing curve provided by Fastmarkets for battery-quality lithium carbonate, commencing in 2028. [9] Illustrative after-tax calculations based on assumption that SWA Lithium, LLC is taxed as a stand-alone US C-Corporation, and does not include the potential impact of currently held corporate net operating losses or credits, nor potential tax shields generated from financing. Assumes a U.S. Federal income tax rate of 21%, a State of Arkansas income tax rate of 3.4%, and includes the impact of ad valorem and other local taxes. To support execution and a successful development approach, the SWA Project will be developed under the following key areas: Wellfield: comprises four (4) well pads supporting twelve (12) supply and ten (10) injection wells, brine gathering pipelines from the well pads to the central processing facility, brine return pipelines from the central processing facility to the well pads and a gas gathering system from well pads to a disposal well in the area, with the ability to add a fifth well pad with two supply and two injection wells as needed. Central Processing Facility (“CPF”): includes brine handling facilities suitable for processing up to 200,000 bbl/d (1,325 cubic meters per hour or “m3/h”) of brine, including sour gas handling, brine filtration, the LSS DLE, purification and concentration of the lithium chloride stream, conversion to a battery-quality lithium carbonate with final product crystallization, drying, micronizing, bagging and handling facilities and all associated utilities. The CPF will be located on the SWA Property on a 118-acre plot within the wider Project boundary located approximately 7 miles (11 kilometers) south of Lewisville on State Highway 29. Subject to an FID which is currently targeted for around year-end 2025, the JV is aiming for construction to begin in 2026 with first commercial operations in 2028. Processing Overview The Project comprises a wellfield development for production of lithium rich brine from the upper unit of the Smackover Formation aquifer. Twelve (12) production wells grouped on four (4) pads will be used to pump brine to the surface and any gas will be separated at the wellhead and sent by pipeline to a third-party operator for disposal. The lithium rich brine will be sent to the CPF to extract the lithium in the form of lithium chloride and convert it into battery-quality lithium carbonate. The CPF is designed to process a feed brine flowrate of up to 200,000 bbl/d (1,325 m3/h) with annual production capacity of 22,500 tonnes of lithium carbonate. The lithium depleted brine is subsequently returned to the wellfield for reinjection into the Smackover Formation via ten (10) injection wells grouped on three of the four production pads. The reinjection supports reservoir pressure maintenance and facilitates the sweep of fresh brine to the production wells. A fifth production and injection pad is planned to be added at a later date as needed to support operations. The feed brine entering the production facility will be treated, filtered, and then processed via the licensed LSS process to produce raw lithium chloride (see news release dated 28th October 2024). The raw lithium chloride will then be purified and concentrated prior to conversion into battery-quality lithium carbonate while the lithium depleted brine and ancillary waste streams are returned for reinjection. The LSS technology licence guarantees lithium recovery (≥ 95%), contaminant rejection (including but not limited to calcium, sodium, potassium & magnesium ≥ 99%) and water use, as well as security of supply for the sorbent media. The LSS process has been extensively de-risked in that it has been proven to selectively extract lithium chloride from Smackover brine for nearly three years, including operating a commercial scale DLE unit at Standard Lithium’s continuously operating Demonstration Plant located in El Dorado, Arkansas since April 2024. Over a four-month continuous operating period (April to July 2024), the LSS process consistently achieved average lithium recovery of 95.4% and average key contaminant rejection of >99% (see news release dated 28th October 2024). In addition, the JV constructed a dedicated LSS field pilot plant and operated it over a 3-month period using brine sourced from the SWA Project area and successfully processed 2,385 bbl (379 m3) of brine. The LSS field pilot plant operated for nearly 500 operating cycles, produced approximately 23 barrels (3.7 m3) of concentrated and purified lithium chloride solution (6% LiCl) and exceeded key performance criteria to confirm the engineering design, recovering over 99% of lithium from the brine (see news release dated 11th March 2025). As of the date of this news release, Standard Lithium has completed over 12,000 cycles of LSS testing and has processed roughly 830,000 barrels (132,000 m3) of brine using the chosen DLE technology. The LSS process produces a high-quality lithium chloride solution that is further purified and concentrated by means of reverse osmosis, chemical softening and ion exchange. After purification and concentration of the raw lithium chloride, a conventional two-stage lithium carbonate crystallization process will be used for final conversion of the polished concentrated lithium chloride into battery-quality lithium carbonate. Purified, concentrated lithium chloride output from the LSS field pilot plant was sent to selected equipment vendors and converted into battery-quality lithium carbonate with positive results exceeding all purity specifications. These lithium carbonate samples are expected to play a key role in the qualification process with prospective off-take partners and aid in the ability of vendors to provide vendor guarantees for the entire carbonation circuit. Production Plan and Assumptions The DFS contemplates initial production capacity of 22,500 tonnes per annum of battery-quality lithium carbonate over a 20-year modeled operating life, producing 447,000 tonnes LCE (Proven Reserves) from the Reynolds Brine Unit (see Table 6). This production represents 38% of the in-situ Measured and Indicated Resources (see Table 5). The Project has the potential to operate over a 40-year life based on the total Proven and Probable Reserves of 709,000 tonnes LCE (see Table 6). CAPEX A contingency of 12.3% was applied to total direct and indirect costs, resulting in an estimated all-in capital cost of $1.45 billion. The JV has undertaken efforts to de-risk the design and construction process for the Project and achieve on-time delivery. In addition to a detailed FEED study supported by extensive equipment testing, this includes extensive market sounding and short-listing of execution phase contractors; vendor engagement; preparation and issuance of a detailed Request for Proposal including General Terms and Conditions which set out construction performance and schedule guarantees to achieve on-time construction; as well as guarantees related to the production of battery-quality lithium carbonate at the facilities’ designed capacity. Table 2: CAPEX Summary[1,2,3] CAPEX ($ millions)Wellfield (Wells, Pipelines and Power)324 Brine Preparation67 Lithium Extraction158 Lithium Purification / Concentration109 Lithium Conversion100 Product Handling36 Utilities, Chemicals and Reagents79 Infrastructure, Piperacks and Site Preparation104 Indirect Costs146 Owners and Miscellaneous Costs166 Contingency (12.3%)160 Total CAPEX[4]$1,449 Notes:[1] Direct costs were estimated using vendor-supplied quotes for all major equipment.[2] Indirect costs include all contractor costs (including engineering), indirect labor costs and owner’s engineer costs.[3] All costs were developed by the Project’s selected FEED contractors at AACE Class III level and were benchmarked by an external third-party to ensure robustness.[4] Any discrepancies in the totals are due to rounding effects. OPEX The average cash operating cost over the life of the Project is $4,516/t of lithium carbonate. Average all-in operating cost, including sustaining capital expenditures and known brine royalties and fees, is $5,924/t. Table 3: OPEX Summary CategoryAverage Annual Cost ($/t)[1]Labor[2]430 Wellfield & Subsurface455 Power & Natural Gas563 Reagents2,156 Consumables106 Maintenance and External Services[3]386 Miscellaneous Costs[4]420 Total Cash OPEX$4,516 Royalties and Lease Overrides[5]1,083 Sustaining and Closure CAPEX324 Total All-in OPEX including Sustaining CAPEX[6]$5,924 Notes:[1] Operating costs are calculated based on an average determined over the 20-year operating life. [2] Approximately 106 full-time equivalent positions. [3] Includes contract maintenance, solids waste disposal, mobile equipment and external lab service.[4] Includes general and administrative expenses.[5] Royalties include quarterly gross lithium royalty of 2.5% as approved by the AOGC, an additional brine fee of $65/acre per year and override fees payable on certain optioned brine leases.[6] Any discrepancies in the totals are due to rounding effects. Project Economics The Project’s financial results are derived from inputs based on the annual production schedule as set forth in the DFS and summarized in Table 1. Sensitivity analysis on the pre-tax unlevered economic results over a 20-year modeled operating life are summarized in Table 4 below.Table 4: Sensitivity Analysis Pre-Tax NPV ($ millions)Pre-Tax IRR (%)Li2CO3 Price ($/t) -20% 90115.2%0%1,66620.2%+20%2,43024.7%Production (tpa) -10%1,28417.8%0%1,66620.2%+10%2,04822.6%CAPEX ($ million) +20%1,40817.1%0%1.66620.2%-20%1,92324.6%OPEX ($/t) +20%1,50619.3%0%1,66620.2%-20%1,82621.2% Mineral Resource Assessment The SWA Project encompasses approximately 30,000 acres of brine leases in the region, and the upgraded resource in the DFS considers this total area, pictured in the map below (see Figure 1). The initial commercial phase of the Project is focused on the Reynolds Brine Unit in the southern half of the total Project area (20,854 acres of mineral leases approved for production). The DFS Project economics are focused on this initial phase of development, which contemplates production of battery-quality lithium carbonate at annual production capacity of 22,500 tonnes over a 20-year modeled operating life, but the JV is planning to develop additional phases of the Project in the total Project area, including the expansion area as shown in Figure 1 (the “Expansion Area”). Figure 1: Brine Unit Map The total in-situ Measured and Indicated Resource for the SWA Project is estimated at 1,177,000 tonnes LCE, or 221,000 tonnes of elemental lithium at an average concentration of 442 mg/L. This updated Mineral Resource estimate was completed as part of the DFS, which resulted in an improvement of the Mineral Resource category from ‘Indicated’ to ‘Measured’ as compared to Standard Lithium’s prior PFS. This upgrading of the Mineral Resource is due to the JV’s advancements in lithium recovery, completion of additional reservoir characterization, brine sampling and geochemistry work. Table 5: Measured, Indicated and Inferred Resource Estimation[1,2,3,4,5,6,7] Resource CategoryMeasuredIndicatedMeasured and IndicatedProject AreaReynolds Brine UnitPotential Expansion AreaTotalUpper SmackoverGross Aquifer Volume, km3[8]4.332.126.45Net Aquifer Volume, km3[8]2.861.394.25Average Porosity11.80%11.75%11.79%Brine Volume, km3[8,9,10]0.340.160.50Average Lithium Concentration, mg/L514293442Lithium Resource, thousand tonnes[2]17348221LCE, thousand tonnes[2,11]9222551,177 Resource CategoryInferredProject AreaReynolds Brine UnitPotential Expansion AreaTotalMiddle SmackoverGross Aquifer Volume, km3[8]4.993.007.99Net Aquifer Volume, km3[8]0.960.611.57Average Porosity9.05%9.88%9.37%Brine Volume, km3[8,10]0.090.060.15Average Lithium Concentration, mg/L452215355Lithium Resource, thousand tonnes[2]391352LCE, thousand tonnes[2,11]21068278 Notes:[1] The effective date of the Mineral Resource estimate is September 3, 2025.[2] Results are presented in-situ. The number of tonnes was rounded to the nearest thousand. Any discrepancies in the totals are due to rounding effects.[3] The Qualified Persons (as defined below) for the Mineral Resources estimate are Randal M. Brush, PE and Robert Williams, PG, CPG.[4] Mineral Resources are inclusive of Mineral Reserves.[5] Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. Mineral Reserves are shown in Table 6.[6] The Mineral Resources estimate follows CIM Definition Standards and the 2019 CIM MRMR Best Practice Guidelines.[7] The Qualified Person is not aware of any known environmental, permitting, legal, title-related, taxation, socio-political or market issues, or any other relevant issue that could materially affect the potential development of Mineral Resources other than those discussed in the Mineral Resources estimate.[8] Volumes are in-place.[9] Calculated brine volumes only include Measured and Indicated Mineral Resource volumes that, when blended from the well field, result in feed above the lithium cut-off grade of 100 mg/L.[10] Cutoff of 6% porosity.[11] LCE is calculated using mass of LCE = 5.323 multiplied by mass of lithium metal. The Proven and Probable Reserves for the Reynolds Brine Unit, a subset of the total Mineral Resource estimate completed as part of the DFS, are estimated at 709,000 tonnes of LCE, or 149,000 tonnes of elemental lithium at an average lithium concentration of 348 mg/L. The Reserves for the DFS are a quantification of the lithium that will be cumulatively processed by the Project over a nominal 40-year life, with Proven Reserves covering the initial 20 years and Probable Reserves covering the subsequent 20 years. The Reserves do not contemplate any other lithium production that could take place from future additional wells or unit expansions that could be used to supplement or bolster lithium production. A numerical reservoir model was constructed using industry standard software. Reserves were calculated from the simulated Smackover Formation brine production rates and lithium concentrations in the Reynolds Brine Unit. Proven and Probable Reserves were estimated based on proven processing performance of the selected LSS technology for the project and the recently completed FEED work. Table 6: Proven and Probable Reserves Estimation[1,2,3,4,5,6] CategoryUnitsProven[7]Probable[8]Proven and ProbableBrine Volume Pumped[10]million m3195232427Average Lithium Concentration[9,10]mg/L481237348Lithium Metal Reserves Produced to Facility[10]thousand tonnes9455149LCE Reserves Recovered by Facility[11,12]thousand tonnes447262709 Notes:[1] The effective date of the Reserve estimate is September 3, 2025.[2] Any discrepancies in the totals are due to rounding effects.[3] The Qualified Person for the Mineral Reserve estimate is Randal M. Brush, PE.[4] Converted Reserves are exclusive to the Reynolds Brine Unit.[5] The Mineral Reserve estimate follows CIM Definition Standards and the 2019 CIM MRMR Best Practice Guidelines.[6] The Qualified Person is not aware of any known environmental, permitting, legal, title-related, taxation, socio-political or marketing issues, or any other relevant issue, that could materially affect the potential development of Mineral Reserves other than those discussed in the Mineral Reserve estimates.[7] The Proven case assumes a 20-year modeled operating life with produced brine expected to exceed a lithium cut-off of 100 mg/L.[8] Probable Reserves assumes a 40-year total operating life with produced brine during years 21 to 40 expected to exceed a lithium cut-off of 100 mg/L.[9] The average lithium concentration is weighted per well simulated extraction rates. [10] The Reserves reference point for the brine pumped, average lithium concentration, and elemental lithium metal is the brine inlet to the processing plant.[11] The Reserves reference point for LCEs is the product output of the processing plant and accounts for plant processing efficiency factors.[12] LCE is calculated using mass of LCE = 5.323 multiplied by mass of lithium metal. Development Timeline The development schedule for the Project is estimated at 34 months from start of construction to the commercial operation date (“COD”) and remains subject to multiple factors, including but not limited to finalization of commercial agreements, engineering, procurement and construction contract finalization and other related definitive documentation, market conditions and financing related activities (see Figure 2). Figure 2: Development Timeline Permitting and Environmental Considerations Acceptance of Federal Department of Energy (“DOE”) funding in the form of a $225 million grant from the DOE’s Office of Manufacturing and Energy Supply Chains (closed in January 2025), triggered the requirement for the Project to comply with the United States National Environmental Policy Act (“NEPA”), for which an environmental assessment was initiated in early 2025. The Project expects to receive a Finding of No Significant Impact (“FONSI”) prior to the end of this year. In support of the NEPA process, the JV has conducted environmental studies to establish baseline conditions within the Project area. The results of these studies will be used to determine environmental values associated with the development site, inform the design process and support future environmental performance monitoring. Permit development activities for construction and operating permits are ongoing and on schedule for completion ahead of required timelines to support the construction and commissioning of the SWA Project. The SWA Project maintains strong support from the local community, the state of Arkansas and the U.S. government. In addition to the federal grant, the Project was selected to be advanced under Executive Order 14241: Immediate Measures to Increase American Mineral Production as a priority critical mineral project in the Fast-41 Program. This was announced by the U.S. Federal Permitting Improvement Steering Council at the recommendation of the National Energy Dominance Council, with the designation ensuring increased transparency, accountability and predictability in the permitting review process. Next Steps and Recommendation The principal recommendation from the DFS is that the Project is ready to progress to a FID. The FID is targeted to be made around year-end 2025, and subject to this, construction is assumed to commence in 2026 with first production targeted in 2028. Qualified Persons All scientific and technical disclosure in this news release was reviewed and approved by Mr. Stephen Ross, P.Geo., British Columbia, Vice President of Resource Development for Standard Lithium and a Qualified Person for purposes of, and as that term is defined in, National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Mr. Ross is not independent of the Company. Department of Energy Acknowledgement and Disclaimer This material is based upon work supported by the U.S. Department of Energy's Office of Manufacturing Energy and Supply Chains under award Number DE-MS-0000099. The views expressed herein do not necessarily represent the views of the U.S. Department of Energy or the United States Government. About Smackover Lithium Smackover Lithium is a joint venture between Standard Lithium and Equinor. Formed in May 2024, Smackover Lithium is developing two DLE projects in southwest Arkansas and East Texas (the “Projects”). Standard Lithium owns a 55% interest and Equinor holds the remaining 45% interest in the two Projects, with Standard Lithium maintaining operatorship. About Standard Lithium Standard Lithium is a leading near-commercial lithium development company focused on the sustainable development of a portfolio of large, high-grade lithium-brine properties in the United States. The Company prioritizes projects characterized by high-grade resources, robust infrastructure, skilled labor, and streamlined permitting. Standard Lithium aims to achieve sustainable, commercial-scale lithium production via the application of a scalable and fully integrated DLE and purification process. The Company’s flagship projects are located in the Smackover Formation, a world-class lithium brine asset, focused in Arkansas and Texas. In partnership with global energy leader Equinor, Standard Lithium is advancing the SWA Project, a greenfield project located in southern Arkansas, and actively exploring promising lithium brine prospects in East Texas. Standard Lithium trades on both the TSX Venture Exchange (the “TSXV”) and the NYSE American under the symbol “SLI”. Please visit the Company’s website at www.standardlithium.com. About Equinor Equinor is an international energy company committed to long-term value creation in a low-carbon future. Equinor’s portfolio of projects encompasses oil and gas, renewables and low-carbon solutions, with an ambition of becoming a net-zero energy company by 2050. Headquartered in Norway, Equinor is the leading operator on the Norwegian continental shelf and has offices in more than 20 countries worldwide. Equinor’s partnership with Standard Lithium to mature DLE projects builds on its broad US energy portfolio of oil and gas, offshore wind, low carbon solutions and battery storage projects. For more information on Equinor in the US, please visit: Equinor in the US - Equinor. Investor InquiriesDaniel Rosen+1 604 409 8154investors@standardlithium.com Media Inquiries media@standardlithium.com Use of Non-GAAP Measures Certain financial measures referred to in this news release are not measures recognized under International Financial Reporting Standards (“IFRS”) and are referred to as non-GAAP financial measures or ratios. These measures have no standardized meaning under IFRS and may not be comparable to similar measures presented by other companies. The definitions established and calculations performed by Smackover Lithium are based on management’s reasonable judgement and are consistently applied. These measures are intended to provide additional information and should not be considered in isolation or as a substitute for measures prepared in accordance with IFRS. The non-GAAP financial measures used in this news release are common to the mining industry. All-in operating cost per tonne is a non-GAAP financial measure or ratio and has no standardized meaning under IFRS Accounting Standards and may not be comparable to similar measures used by other issuers. As the SWA Project is not in production, the Company does not have historical non-GAAP financial measures nor historical comparable measures under IFRS, and therefore the foregoing prospective non-GAAP financial measures may not be reconciled to the nearest comparable measures under IFRS. Neither the TSXV nor its Regulation Services Provider (as that term is defined in policies of the TSXV) 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”, “could”, “should”, “schedule”, “predict”, “budget”, “project”, “potential” and other similar words or expressions identify forward-looking statements or information. These forward-looking statements or information may relate to intended development timelines, the timeline for completion of a Definitive Feasibility Study for the SWA Project, the cost and timing of any development of SWA, mining recoveries, processing method and rates, production rates, projected metallurgical recovery rates, capital and operating cost estimates, infrastructure, including the CPF and additional production and injection pads, the projected life of mine and other expected attributes of SWA, the NPV, IRR, future prices of commodities, prospective off-take partners, 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, the use of non-GAAP measures in financial performance assessments, changes in exploration costs and government regulation in Canada and the United States, future expansion phases, the timing of the environmental assessment 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 affecting such statements and information other than as required by applicable laws, rules and regulations. Figures accompanying this announcement are available athttps://www.globenewswire.com/NewsRoom/AttachmentNg/466de89a-7189-4dd1-b835-09ba33e1baffhttps://www.globenewswire.com/NewsRoom/AttachmentNg/2a0b7a1c-b299-4c18-9825-2296c8b07ea1

Smackover Lithium Announces Positive Definitive Feasibility Study Results for its South West Arkansas Project

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