Focus Graphite Completes Final Major ESIA Technical Study, Advancing Lac Knife Toward Permitting

About this update from Focus Graphite Inc.

Hydrogeological Assessment Concludes Multi-Year Environmental Program and Supports Upcoming ESIA Submission Ottawa, Ontario--(Newsfile Corp. - June 15, 2026) - Focus Graphite Inc. (TSXV: FMS) (OTCQB: FCSMF) (FSE: FKC0) ("Focus" or the "Company") a Canadian developer of high-grade flake graphite deposits and advanced graphite materials for battery, defence, and industrial applications, is pleased to announce the completion of the Hydrogeological Assessment (the "Assessment" or the "Study") for its wholly-owned Lac Knife Graphite Project ("Lac Knife" or the "Project"), concluding a multi-year environmental program and completing the major technical work required to support the Company's Environmental and Social Impact Assessment ("ESIA") submission. Completed by Yves Leblanc, P.Geo., of Richelieu Hydrogeologie Inc. ("Richelieu") under the supervision and management of IOS Geosciences Inc. ("IOS"), the assessment evaluated existing groundwater conditions, regional hydraulic systems, natural geochemical characteristics, and the long-term environmental performance of the redesigned dry-stack tailings storage facility ("TSF") introduced as part of the 2021 Feasibility Study ("2021 Feasibility") update. Based on the monitoring of more than thirty (30) wells, the Assessment confirmed that naturally occurring groundwater conditions at Lac Knife are well understood. Groundwater in the immediate vicinity of the deposit exhibits slightly acidic and sulphate-rich characteristics associated with the natural oxidation of sulphide-bearing graphite mineralization but becomes progressively buffered as it migrates away from the deposit. The Study also established natural background concentrations for certain elements associated with the mineralization, creating a scientifically supported baseline for future groundwater monitoring and environmental modelling. The Study provides important technical validation of the Company's environmental management strategy and further de-risks the Project by confirming that natural hydrogeological conditions are well understood and that the engineered containment systems incorporated into the TSF design are expected to perform as intended over the long term. Importantly, the Assessment confirmed that regional groundwater fl...

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