COAL RESERVES AND RESOURCES STATEMENT Notes: 1 License refers to PT Sungai Danau Jaya Production Operation IUP. 2 Previous Coal Reserves and Coal Resources estimates were reported as of 31 December 2024. 3 Resources are inclusive of Reserves. 4 The results presented are rounded to reflect the accuracy of the estimates. Minor discrepancies are due to rounding and are not considered material by SMGC. 5 Resources and Reserves are reported in accordance with SMGC’s interpretation of the JORC Code 2012 Edition. * Selling basis Sungai Danau Jaya (SDJ) Total area: 235.5ha Permit/Tenure: IUP Operasi Produksi / 29 May 2027 Location: Angsana and Sungai Lohan sub districts of the Tanah Bumbu regency in the South Kalimantan Province of Indonesia Name of Asset/Country: SDJ Coal Mining Concession/Indonesia Category Mineral Type Gross Attributable to License(1) Net Attributable to Issuer(4) Remarks Tonnes (Million) Grade Tonnes (Million) Grade Changes from previous update (%)(2) Reserves(5) Proved Coal 5.2 Sub-Bituminous Rank C 5.1 Sub-Bituminous Class C -17% Change due to production Probable Coal 2.1 Sub-Bituminous Rank C 2.1 Sub-Bituminous Class C -9% Change due to production Total Coal 7.3 Sub-Bituminous Rank C 7.2 Sub-Bituminous Class C -15% Change due to production Resources(3)(5) Measured Coal 7.7 Sub-Bituminous Rank C 7.6 Sub-Bituminous Class C -13% Change due to production Indicated Coal 4.2 Sub-Bituminous Rank C 4.2 Sub-Bituminous Class C -7% Change due to production Inferred Coal 4.2 Sub-Bituminous Rank C 4.2 Sub-Bituminous Class C 0% No change Total Coal 16.1 Sub-Bituminous Rank C 15.9 Sub-Bituminous Class C -9% Change due to production Summary of reserves and resources as at 31 December 2025 Name of Qualified Person: Keith Whitchurch Date: 31 December 2025 Professional Society Affiliation / Membership: BE(Hons), MEngSci, FAusIMM(CP), (CP)(Min), RPEQ, PERHAPI, CPI, IPU, ASEAN Eng, APEC Eng. Calorific value: 4,200 kcal/kg gar* Total sulfur: 0.2% (adb) Ash: 4.7% (adb) 19 GEO ENERGY | ANNUAL REPORT 2025
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