Endeavour Mining Investor Presentation Deck

RETURN ON CAPITAL EMPLOYED Expected to improve ROCE with optimisation of acquired assets Return on Capital Employed by asset Wahgnion 10% Boungou 10% Mana 10% Houndé 9% Capital Employed Other 9% Sabodala-Massawa 43% Ity 8% High ROCE for legacy assets following build and exploration success ITY 6% 2018 HOUNDÉ 27% 2018 2019 35% 2020 41% 2021 44% 8-10 28% 14% 2019 2020 42% 2021 ROCE (Adjusted EBITDA as in MD&A less depreciation and amortization) divided by average capital employed (total assets less current liabilities) (1) For the post acquisition period commencing February 10, 2021, expressed as an annualized rate MANA Expected to increase ROCE on acquired assets with exploration and optimisation 22% 2020 10% 18% SABODALA-MASSAWA¹ 2021 2021 ENDEAVOUR MINING BOUNGOU 14% 2020 WAHGNION¹ 11% 2021 14% 2021 28

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