LithiumBank advances Boardwalk permitting as field surveys begin

Stantec completes desktop environmental review and mobilizes field teams for baseline studies supporting the Project's EPEA application

Calgary, Alberta--(Newsfile Corp. - September 21, 2026) - LithiumBank Resources Corp. (TSXV: LBNK) (OTCQX: LBNKF) (FSE: HT9) ("LithiumBank" or the "Company") announces that Stantec Consulting Ltd. ("Stantec") has completed its environmental desktop review for the Boardwalk Lithium Brine Project ("Boardwalk") and mobilized field teams to begin baseline environmental surveys. The program, covering groundwater, vegetation, wetlands, soils and wildlife form the evidentiary basis of the Environmental Protection and Enhancement Act (EPEA) application required to construct and operate Boardwalk and represents the Company's next concrete step in the regulatory pathway toward a construction decision.

Boardwalk hosts an estimated 5.2 Mt Measured & Indicated and 2.8 Mt Inferred Lithium Carbonate Equivariant (" LCE ") resource at an average lithium grade of 81.6 mg/L (Table 1), as set out in the technical report titled "LithiumBank Resources Corp. Boardwalk NI 43-101 Technical Report" , with an effective date of February 20, 2025 (filed on SEDAR+ on April 7, 2025). Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that any mineral resource will be converted to a mineral reserve.

A preliminary economic assessment of Boardwalk outlined a pre-tax NPV (8%) of US$3.7 billion. The preliminary economic assessment is set out in the technical report entitled "NI 43-101 Technical Report Preliminary Economic Assessment (PEA) for LithiumBank Resources Boardwalk Lithium-Brine Project in West-Central Alberta, Canada" , effective February 22, 2024, and filed under the Company's profile on SEDAR+ on February 29, 2024 (the "PEA"). The PEA is preliminary in nature and includes inferred mineral resources that