Smackover Lithium Reports Highest Lithium Brine Grade in SWA Project Area as FEED Studies Nearing Completion

Core Insights - Smackover Lithium, a joint venture between Standard Lithium and Equinor, has reported the highest lithium concentration to date from its South West Arkansas Project, with a measurement of 616 mg/L lithium in brine [1][4]. Company Developments - The Lester well, completed in Q2 2025, marks the conclusion of all sub-surface exploration activities for Phase 1 of the SWA Project [2]. - The average lithium concentration from three brine samples taken from the Lester well was 582 mg/L, indicating significantly higher than expected lithium concentrations [3][7]. - Dr. Andy Robinson, President and COO of Standard Lithium, expressed optimism regarding the results, which exceeded initial expectations of approximately 500 mg/L [4]. Future Plans - With fieldwork completed, the Smackover Lithium team is focused on finalizing the Front-End Engineering Design (FEED) study, with a Definitive Feasibility Study anticipated later in Q3 2025 [5]. - The completion of these studies is seen as a significant milestone, paving the way for off-take negotiations and project financing, with a Final Investment Decision targeted by the end of 2025 [5]. Joint Venture Overview - Smackover Lithium is a joint venture formed in May 2024, with Standard Lithium holding a 55% interest and Equinor holding 45% [11]. - The joint venture is developing two Direct Lithium Extraction (DLE) Project Companies in southwest Arkansas and east Texas [11]. Company Background - Standard Lithium is focused on sustainable development of high-grade lithium-brine properties in the U.S., particularly in the Smackover Formation [12][13]. - The company aims to achieve commercial-scale lithium production through a scalable Direct Lithium Extraction and purification process [13].