Standard Lithium (SLI) Investor presentation summary

Strategic vision and project overview

• Aims to become a leading low-cost, sustainable U.S. lithium producer with near-term commercial-scale production in Arkansas and Texas, leveraging innovative direct lithium extraction (DLE) technology and strong partnerships.

• Focuses on projects in regions with established infrastructure, skilled workforce, and regulatory support, targeting first commercial production in 2029.

• Partnerships with Equinor and Aquatech provide expertise in subsurface development, project delivery, and DLE technology, including performance guarantees.

Project assets and resource highlights

• Smackover Formation in Arkansas and East Texas offers some of North America's highest lithium brine concentrations, up to 806 mg/L.

• South West Arkansas (SWA) Project: 22,500 tpa initial capacity, 1.2Mt measured & indicated LCE resource, 20+ year modeled life, $1.7bn pre-tax NPV, 20% IRR.

• East Texas/Franklin Project: 2.2Mt inferred LCE resource, 668 mg/L average concentration, potential for 100,000+ tpa LCE production across three projects.

Technology and operational de-risking

• Commercial-scale demonstration plant operating since 2020, processing 42 million gallons of brine and achieving >95% lithium recovery and >99% contaminant rejection.

• Field test at SWA Project confirmed flowsheet and DLE performance, underpinning engineering design and feasibility study.

• License agreement with Aquatech for exclusive use of Li-Pro LSS technology in Smackover, with performance guarantees.