3 Conclusion Based on our procedures and the evidence obtained, we are not aware of any material modifications that should be made to sustainability metrics in Annex A, in order for it to be in accordance with the Criteria. Restricted Use The report is intended solely for the information and use of ADNOC for the disclosures made in the Sustainability Report for the year ended 31 December 2025 and is not intended to be and should not be used by anyone other than ABU DHABI NATIONAL OIL COMPANY (ADNOC) P.J.S.C for Ernst & Young Middle East (Abu Dhabi Branch) Mobin Khan Partner May 13, 2026 Abu Dhabi, United Arab Emirates 4 Annex A: ADNOC’s sustainability metrics (the “Subject Matter”) 1. Market-based GHG emissions (Scope 1 and 2) from upstream oil and gas production including gas processing. Reporting in line with the International Association of Oil and Gas producers’ (IOGP) definition. 2. Methane emissions from upstream oil and gas activities operated by ADNOC. Reporting is aligned with the Oil and Gas Methane Partnership (OGMP) framework. 3. ADNOC’s clean power consumption through clean power agreement with Emirates Water and Electricity Company (EWEC) 4. Total Recordable Injury Rate (TRIR), Lost Time Injury Frequency (LTIF), Fatal Accident Rate (FAR) 5. The number of Lost Time Injuries (LTIs) per 1,000,000 (million) hours worked 6. The number of fatal incidents per 100,000,000 (100 million) hours worked 2025 Values Unit of measure 25.3 Million tonnes of CO2e 24.6 Thousand tonnes of CH4 32,120 MMSCF 0.89 Million tonnes of CO2e 11,424,470.00 MWh 0.1 Number (#) 0.06 Number (#) 0.24 Number (#) 255,575 Metric tonnes 93,761 Metric tonnes 42,004 Metric tonnes 145,577 Metric tonnes 2,137 Metric tonnes Number of spills 3.00 Number (#) Volume of spills 192.59 Barrel (bbl) Percentage of recovery 23.20 Percentage (%) Number of spills 3.00 Number (#) Volume of spills 30.00 Barrel (bbl) Percentage of recovery 0.00 Percentage (%) PM Spills NMVOCs LTIF 4,5 FAR 4,6 SOx NOx CO Non-GHG emissions Hydrocarbon spills Non- Hydrocarbon spills Sustainability Metrics Methane emissions 2 Scope 1 & scope 2 emissions 1 Total flaring volume GHG emissions abatement projects Clean power import 3 TRIR 4 145 ADNOC Sustainability Report 2025 144