Atlantic Operations Overview

Simberi - Expansion Exploration Targets 210 000mN 209 000mN Sorowar West (Ox) EL609 Simberi Island Sorowar Location Pigibo Pigiput ML136 Simberi Pigibo Trotsky (Ox) * Sorowar Simberi - Sulphide Targets FY24 Targets & Planned Drilling Pigibo North (Ox) * Sorowar-Pigiput * Trend (Su) See Enlargement * Monun Extension (Ox) See Enlargement Pigiput NE (Ox) *Pigibo Deeps (Su) * Simberi Sulphides Pigiput • Detailed 3D modelling of sulphide mineralisation on ML136 has been completed targeting below and in between the Sorowar and Pigiput deposits as well as below Pigibo deposit A combined diamond and RC drill program of approximately 30 holes for 7,000m was designed The program is a combination of resource definition and exploration drilling located outside current pit designs 43 000mE Botlu 250m TI Local Grid * Pigibo Outlet (Ox) Work Programs & Drilling Planned ResDev Drilling Planned Exploration Drilling *Exploration Target Abc Work Programme FY24 Target Work Area FY23 Target Work Area Mined Pit Outline Resource Outline (measured, indicated and inferred) 45 000mE Simberi 182 Drawn July 2023 16

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