• Formed special committee to evaluate strategic alternatives for Kachi Lithium Brine Project
• Materially increased Measured and Indicated Resource by 10% to 8.2 Mt LCE
• Advancing addendum to 2023 Kachi Phase One Definitive Feasibility Study

Lake Resources N.L. (ASX: LKE, OTC: LLKKF) announced several key developments in its quarterly activities report for the period ended 30 June 2025. The company formed a special committee to evaluate a full range of strategic alternatives aimed at maximizing value for all stakeholders for its tier one flagship Kachi Lithium Brine Project, which ranks as one of the largest lithium assets in the Lithium Triangle. The company also materially increased its Measured and Indicated Resource by approximately 10% or 0.9 Mt lithium carbonate equivalent (LCE) to 8.2 Mt LCE from 7.3 Mt LCE. Additionally, Lake Resources significantly advanced an addendum to its 2023 Kachi Phase One Definitive Feasibility Study, which will provide updated Kachi cost estimates (OPEX and CAPEX), with timing for completion in calendar year Q3 2025. The company continued to engage with local officials to finalize approval of the Exploitation Environmental Impact Assessment for Kachi, and post quarter-end, announced the completed YPF Luz Front-End Engineering Design for the proposed power delivery system to Kachi, showing grid power is a viable solution to meet Kachi's power demands. Lake Resources achieved an approximate 40% reduction in cash expenditures for the quarter ending 30 June 2025 compared to the prior quarter, reaffirming calendar year 2025 expectations for materially lower cash outgoings compared to calendar year 2024. The company held $12.37 million in liquidity at 30 June 2025, benefiting from continued costs right-sizing, active working capital management, and receipt of $2.25 million via the At-the-Market Subscription Agreement.