Perama Hill Project Overview

Efemçukuru High-grade underground operation located in Izmir Province in western Türkiye OVERVIEW Location İzmir Province, Türkiye RESERVES AND RESOURCES (2) Contained Tonnes Grade Ownership 100% Black Sea (x1000) (g/t Au) Ounces (x1000 Au) Mine type Underground P&P Reserves 3,372 5.08 550 Ankara O Metals mined Gold M&I Resources 5,580 6.69 1,200 TÜRKIYE Processing method Flotation circuit to produce gold concentrate GREECE Inferred Resources 1,323 4.13 176 Efemçukuru Deposit type Epithermal gold Mediterranean Sea Life of mine 6 years based on Reserves 2022 Results 87,685 ozs produced at $1,091/oz AISC(1) and C1 Cost(1) of $701/oz sold Production: 63,714 ozs 2023 Q3 YTD Cash Operating Cost (C1)(1): $791/oz sold eldorado gold (1) (2) Europe • Maintain low-cost production Efemçukuru focused on continuous improvement to sustain low-cost production Efemçukuru met annual production guidance for 9th consecutive year, since 2014 These are non-IFRS financial measures or ratios. See Slide 2 'Non-IFRS Measures' for more information. Please refer to the Appendix for more information with respect to the mineral resources and mineral reserves. 21

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