Standard Lithium Ltd. press release

InvestorNewsBreaks - Standard Lithium Ltd. (TSX.V: SLI) (NYSE American: SLI) (FRA: S5L) Files Technical Report for SWA Project

2023-09-18

TSXV - TSX Venture Exchange · Lithium · Bromine · Potash · Sodium · Canada · Technical Studies

InvestorNewsBreaks – Standard Lithium Ltd. (TSX.V: SLI) (NYSE American: SLI) (FRA: S5L) Files Technical Report for SWA Project

Standard Lithium (TSX.V: SLI) (NYSE American: SLI) (FRA: S5L), a leading near-commercial lithium company, has filed the preliminary feasibility study for the South West Arkansas Project (the “report”), as announced on Aug. 8, 2023. The report for the South West Arkansas Project (“SWA Project”), located approximately 15 miles west of the City of Magnolia in southwestern Arkansas, is available for review under the company’s profile on SEDAR+and the company’s website. According to the update, the SWA Project’s indicated and inferred mineral resource of 1.4 Mt and 0.4 Mt lithium carbonate equivalent, respectively, has some of the highest reported lithium brine concentrations in North America, averaging above 400 mg/L. For highlights of the report, please refer to the company’s announcement dated Aug. 8, 2023.

To view the full press release, visit https://ibn.fm/rZuGP

About Standard Lithium Ltd.

Standard Lithium is a leading near-commercial lithium development company focused on the sustainable development of a portfolio of lithium-brine bearing properties in the United States. The company prioritizes brine projects characterized by high-grade resources, robust infrastructure, skilled labor, and streamlined permitting. The company aims to achieve sustainable, commercial-scale lithium production via the application of a scalable and fully integrated direct lithium extraction (“DLE”) and purification process. The company’s signature projects, the Phase 1A and the South West Arkansas Project, are located on the Smackover Formation in southern Arkansas near the Louisiana state line, a region with a long-standing and established brine processing industry. The company has also identified a number of highly prospective lithium brine project areas in the Smackover Formation in East Texas and began an extensive brine leasing program in the key project areas. In addition, the company has an interest in certain mineral leases located in the Mojave Desert in San Bernardino County, California. Standard Lithium trades on both the TSX Venture Exchange and the NYSE American under the symbol SLI and on the Frankfurt Stock Exchange under the symbol S5L. For more information, please visit the company’s website at www.StandardLithium.com.

NOTE TO INVESTORS:The latest news and updates relating to SLI are available in the company’s newsroom at https://ibn.fm/SLI

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