RESERVES & RESOURCES YUMNA FIELD, OMAN The following reserves and resources tables have been extracted from the independent summary Qualified Person’s Report (QPR) dated 5 February 2026, prepared by Exceed Torridon Limited. With reference to the Company’s announcement on 5 February 2026, an extract from the independent summary QPR of the reserves of the Yumna Field which is attributable to Masirah Oil Ltd ("MOL" or "Masirah"), a subsidiary in which the Company has an indirect 87.5 per cent interest, is provided below: Masirah Net Entitlement Volume 2,3 Rex’s 87.5% Net Entitlement Volume 2,3 Category Gross Attributable to Licence (MMstb)1, 2 Previous Report (MMstb)4 Current Report (MMstb)5 % Change from Previous Update Previous Report (MMstb)4 Current Report (MMstb)5 Change from Previous Update (%) Risk Factors6 Remarks RESERVES Low 1P 5.80 0.4 4.36 >100% 0.4 3.82 >100% N.A. Change due to production5, maturation of reserves and updated volumetrics Base 2P 7.20 4.7 4.93 5% 4.1 4.31 5% N.A. Change due to production5, maturation of reserves and updated volumetrics High 3P 8.15 5.5 5.36 -3% 4.8 4.69 -3% N.A. Change due to production5, maturation of reserves and updated volumetrics 1. Gross field Reserves (100% basis) after economic limit test as of 31st December 2025 2. Economic cut off month for the 1P, 2P and 3P reserves are March 2030, August 2030 and January 2031, respectively. 3P economic limit reached after end of license in July 2030 gross (4%) 280 MMstb difference 3. Company net entitlement Reserves after economic limit test 4. Volume as of 31st December 2024, as stated in the 23rd June 2025 QPR Summary Update 5. Volume after subtraction of net entitlement production plus revision and maturation of reserves 6. No risk is applied to Reserves. MMstb: millions of stock tank barrels Any apparent discrepancies are due to rounding. N.A.: Denotes not applicable. As of 31 December 2025, the Yumna Field had produced about 9.6 MMstb. Based on the recoverable reserves estimate from the 2025 work, the remaining reserves are presented in the table above. The produced volumes have been subtracted from the updated remaining reserves volumes for each of the three cases (Low, Base, High) on a gross basis attributable to the licence, and on a net entitlement basis to MOL (as presented in the table above). Name of Qualified Person: Stephen Hayhurst Date: 5 February 2026 Professional Society Affiliation / Membership: Chartered Engineer (CEng), Fellow of the Energy Institute (FEI), Society of Petroleum Engineers (SPE) Rex International Holding Limited 43
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