Endeavour Mining Investor Presentation Deck

WEST AFRICA OPERATES AS AN ECONOMIC UNION West African Economic and Monetary Union (WAEMU) GIN BISSA O CFA AR LEONE LININA MALI BURKINA FASO CÔTE D'IVOIRE Oupringle MINING BENIN Common central bank for eight states NIGER Common currency pegged to the Euro Fiscal and monetary policies usually aligned with IMF guidance ENDEAVOUR States have undergone elections in past decade, closely monitored by the IMF STABLE MINING CODE Well balanced profit sharing: > Corporate tax rate between 25- 35% > Free-carried interests between 10-15% > Royalty rates based on sliding scale, linked to the gold price, ranging from 3 to 6% > OECD principles associated to tax base erosion well governed with appropriate withholding tax and thin capitalisation legislation in place > Standard tax principles and interpretation consistent in multiple countries within WAEMU zone (1) Lost Time Injury Frequency Rate= (Number of LTIs in the Period X 1,000,000)/(Total man hours worked for the period) (2) GMR, FY-2020 SECTOR SIZE Extractive sector represents a low % of GDP¹: > Senegal: 2% > Cote d'Ivoire: 5% > Burkina Faso: 9% > Mali: 8% 150

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