Endeavour Mining Investor Presentation Deck

WAHGNION MINE Burkina Faso Overview MINING Quick Facts Timeline ENDEAVOUR 140-150koz 2022 Target 2017 Production Ownership 90% EDV 10% Burkina Faso The newly developed Wahgnion mine offers cash flow generation and presents significant exploration upside. The mine was built ahead of schedule and under budget, achieving commercial production in November 2019. There are more than one dozen drill- ready targets on the regional land package, within trucking distance of the plant. 2018 AK COO video presentation $1,050-1,150/oz PFS published following completion of reserves and resources confirmation program 2022 Target Mining Type Open pit / Owner Mining AISC 2018 Early construction work started in Q1-2018 O Website Since commercial production was achieved, Wahgnion's processing plant has performed ~25% above nameplate capacity for throughput and gold recovery. Processing Rate Ö The mine plan for Wahgnion focuses on open-pit mining of four initial gold deposits within the mine lease. A multi-year drill program is underway at these four deposits with a goal of extending the mine life. 3.0-3.2Mtpa CIL plant 2019 Latest technical report 1.1 Moz As at December 31, 2020 P&P Reserves Royalty 3%-5% sliding scale (Govt) 1% (Elemental Royalties) Construction completed and commercial production declared effective 1 November, 2019 Updated feasibility study published increasing mineral resources estimate by 33% and minerals reserves by ~40% 2020 3D mine site tour 1.9 Moz As at December 31, 2020 M&I Resources AL BURKINA FASO Mana Mine Houndé Mine Wahgnion Mine 2022 Ouagadougou Boungou Mine Corporate Tax 17.5% Mining commencing at Samovogo deposit Updated LOM plan published highlighting ~25% increase in average annual production 80

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