Endeavour Mining Results Presentation Deck

ALL-IN SUSTAINING MARGIN Benefiting from operational discipline and a high gold price All-in Sustaining Margin from all operations All-in sustaining margin Realized Gold Price $333m $883/oz $1,749/oz Q1-2021 All-in sustaining margin per ounce $395m $938/oz $1,791/oz Q2-2021 $337m $858/oz $1,763/oz Q3-2021 $340m $873/oz $1,787/oz Q4-2021 $381m $1,039/oz $1,905/oz Q1-2022 ENDEAVOUR MINING +$48m All-In Sustaining Margin Q1-2022 vs Q1-2021 +$156/oz All-In Sustaining Margin Q1-2022 vs Q1-2021 9

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