Investor Presentaiton

Operational Update: Blocks 3/05 and 3/05A Republic of the Congo Block 3/05 (Congo basin) - 30%¹ D.R.C. Export Pipeline Palanca Punja Impala • June 2023 production averaged ~19,100 bbl/d о H1 2023 production averaged 18,000 bbl/d compared to Q1'23 of 17,206 bbl/d, demonstrating the benefit of planned restoration works over Q1'23 in addition to the well intervention works underway, focusing on acid wash and stimulation across the Oombo, Pacassa, Palanca and Bufalo fields Production uptime improved from 77% in Q1'23 to 87% in Q2'23 о Block 3/05 Area Angola о Bufalo Nord Impala SE 2P reserves of 108 mmbbls (gross) and 2C resources of 43 mmbbls (gross)³ Key 2023/2024 activities: Atlantic Ocean Luanda 100 Km Afentra Licences ⚫ Oil Fields Gas Fields Export Pipelines Pacassa Block 23 Pacassa SW 5 Km Block 3/05 Block 3/05A ⚫ Oil Fields Future Developments Bufalo Gazela Cobo Caco Pambi Oombo • Atlantic Ocean о Water injection rates have increased, averaging ~38,000 bw/d in H1'23 о Additional well perforations and installation of artificial lift о Light well interventions ongoing with a further 30 interventions in next 18 months о Ongoing investment in infrastructure to enhance reliability and uptime о A gas management workstream has commenced to examine a holistic solution for gas which could enable a material reduction of emissions in medium-to-long term Block 3/05A (Congo basin) - 21.33% 2,3 Long-term testing continues at the Gazela field of an additional 1,200 bbl/d, enabling framing of potential development options • Punja development concept meetings ongoing to frame opportunity 2C resources of 33 mmbbls (gross)³ 1 Upon completion of the Azule and Sonangol transactions (adjusted working interest, July 2023), Afentra's working interest in Block 3/05 increases from 4% to 30% 2 Assumes the default China Sonangol interests have been redistributed pro-rata amongst existing Partners, increasing Afentra's interest in Block 3/05A from 4% to 5.33% (post-INA) and from 16% to 21.33% (post-Azule) 3 2023 CPR estimated 1P/2P/3P of 72/108/145 mmbbls (gross) at 1.1.23 effective date. Caco-Gazela & Punja resources not included in 2023 CPR. Block 3/05A 2C resources of 33 mmbbls (gross) based on Afentra resource estimate effective 1 January 2022. Afentra plc

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