Smackover Lithium Files Maiden Inferred Resource for Its Franklin Project in East Texas, Containing the Highest Reported Lithium-in-Brine Grades in North America

On November 5, 2025, Standard Lithium announced that its joint venture, Smackover Lithium, has filed a maiden Inferred Mineral Resource report for its Franklin Project located in East Texas. The report outlines a resource of 2,159,000 metric tonnes of lithium carbonate equivalent (LCE) with an average lithium concentration of 668 mg/L. The resource also contains 15,414,000 tonnes of potash and 2,638,000 tonnes of bromide. The company highlights that this represents the highest reported lithium-in-brine grades in North America. This filing formalizes the resource estimate that was initially announced on September 24, 2025.

The impact of this news is Routine - Positive. While the resource itself is highly significant and potentially transformative for the company's growth pipeline, this news release simply confirms the official filing of the NI 43-101 technical report. The market has already had over a month to price in the initial announcement of the resource numbers from September 24, 2025, which coincided with a significant upward move in the stock price.

This filing is a necessary and positive procedural step. It formalizes the asset, adds it officially to the company's mineral inventory, and allows for the commencement of further economic studies, such as a Preliminary Feasibility Study (PFS). It converts a promising exploration target into a defined resource, which reduces uncertainty and adds credibility. However, as no new material information about the size or grade of the resource was released, this news is not a new catalyst but rather a confirmation of a previous one.

From a risk-averse perspective, the filing solidifies a key asset but does not change the immediate financial or operational picture. The company's primary focus and near-term value driver remains the advancement of its flagship South West Arkansas (SWA) project toward a Final Investment Decision (FID) and construction.

Standard Lithium Ltd. is a near-commercial lithium development company focused on the sustainable extraction of lithium from brine resources in the Smackover Formation in Arkansas and Texas. The company's strategy is centered on using Direct Lithium Extraction (DLE) technology, which offers a smaller environmental footprint compared to traditional evaporation ponds or hard-rock mining.

The company's flagship asset is the South West Arkansas (SWA) Project, which is being advanced through a 55/45 joint venture with energy major Equinor, named Smackover Lithium. The project's Definitive Feasibility Study (DFS), released in September 2025, outlines a robust project with a pre-tax NPV of $1.7 billion and an IRR of 20.2%. The plan is to produce 22,500 tonnes per annum of battery-quality lithium carbonate over a 20+ year life, with first production targeted for 2028. The project is moving towards a Final Investment Decision (FID) by the end of 2025.

The company's second key asset is the newly defined Franklin Project in East Texas, which hosts a large, high-grade inferred resource, providing a clear path for future growth.