Investor Presentaiton

2024 drilling programme: maximising the value of our portfolio Converting UK 2P reserves into production and targeting significant resource additions internationally NORTH SEA J-Area GBA AELE Clair Phase 1 Clair Ridge Schiehallion Buzzard Decommissioning INTERNATIONAL TODAY Talbot Judy RB Chalk Callanish F6 A26 x2 Subsea Wells NTM Norway (op) Ametyst Norway (non-op) Ringhorne N Andaman II (Indonesia) Halwa & Gayo S. Andaman (Indonesia) Block 30 (Mexico) Development Harbour Energy | Investor Presentation Appraisal Exploration P&A 2024 NW Seymour Jocelyn South RK Redrill Gilderoy Brodgar N&E Platform wells x3 subsea wells P&A programme Tangkulo Layaran-2 Kan-2 Harbour Energy Talbot to be tied into J-Area at around year-end 2024 33

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