Endeavour Mining : Corporate Presentation – December 2021

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OTCQX: EDVMF

Corporate Presentation

December 2021

TABLE OF CONTENTS

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Endeavour Overview

Financial Results and Outlook

Our High Quality Portfolio

Being a Trusted Partner

Unmatched Competitive Advantage inWest Africa

Appendix

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DISCLAIMER AND FORWARD-LOOKING STATEMENTS

Cash cost per ounce and all-in sustaining cash cost per ounce are non-GAAP performance measures with no standard meaning under IFRS. This presentation contains statements which constitute "forward-looking information" within the meaning of applicable securities laws, including but not limited to statements regarding the plans, intentions, beliefs and current expectations of Endeavour with respect to future business activities and operating performance. Forward-looking information is often identified by the words "may", "would", "could", "should", "will", "intend", "plan", "anticipate", "believe", "estimate", "expect" or similar expressions and includes information regarding Endeavour's expectations regarding Endeavour's ability to create sustainable shareholder value over the long term, and the potential for continued or future dividends. Investors are cautioned that forward-looking information is not based on historical facts but instead reflect Endeavour management's expectations, estimates or projections concerning future results or events based on the opinions, assumptions and estimates of management considered reasonable at the date the statements are made. Although Endeavour believes that the expectations reflected in such forward-looking information are reasonable, such information involves risks and uncertainties, and undue reliance should not be placed on such information, as unknown or unpredictable factors could have material adverse effects on future results, performance or achievements of Endeavour. This forward- looking information may be affected by risks and uncertainties in the business of Endeavour and market conditions, including but not limited to: risks related to the successful integration of acquisitions or completion of divestitures; risks related to international operations; risks related to general economic conditions and the impact of credit availability on the timing of cash flows and the values of assets and liabilities based on projected future cash flows; Endeavour's financial results, cash flows and future prospects being consistent with Endeavour expectations in amounts sufficient to permit sustained dividend payments; the completion of studies on the timelines currently expected, and the results of those studies being consistent with Endeavour's current expectations; actual results of current exploration activities; production and cost of sales forecasts for Endeavour meeting expectations; unanticipated reclamation expenses; changes in project parameters as plans continue to be refined; fluctuations in prices of metals including gold; fluctuations in foreign currency exchange rates; increases in market prices of mining consumables; possible variations in ore reserves, grade or recovery rates; failure of plant, equipment or processes to operate as anticipated; extreme weather events, natural disasters, supply disruptions, power disruptions, accidents, pit wall slides, labour disputes, title disputes, claims and limitations on insurance coverage and other risks of the mining industry; delays in the completion of development or construction

activities; changes in national and local government legislation, regulation of mining operations, tax rules and regulations and changes in the administration of laws, policies and practices in the jurisdictions in which Endeavour operates; disputes, litigation, regulatory proceedings and audits; adverse political and economic developments in countries in which Endeavour operates, including but not limited to acts of war, terrorism, sabotage, civil disturbances, non-renewal of key licenses by government authorities, or the expropriation or nationalization of any of Endeavour's property; risks associated with illegal and artisanal mining; environmental hazards; and risks associated with new diseases, epidemics and pandemics, including the effects and potential effects of the global Covid-19 pandemic. Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward-looking information prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated or expected. Although Endeavour has attempted to identify important risks, uncertainties and factors which could cause actual results to differ materially, there may be others that cause results not to be as anticipated, estimated or intended. Endeavour does not intend, and does not assume any obligation, to update this forward- looking information except as otherwise required by applicable law.

This information is qualified in its entirety by cautionary statements and risk factor disclosure contained in filings made by Endeavour with the Canadian securities regulators, including Endeavour's annual information form for the financial year ended December 31, 2020 and financial statements and related MD&A for the financial year ended December 31, 2020 filed with the securities regulatory authorities in certain provinces of Canada and available at www.sedar.com.

Clinton Bennett, Endeavour's Vice President of Metallurgy and Process Improvement, a Fellow of the Australasian Institute of Mining and Metallurgy, is a "Qualified Person" as defined by National Instrument 43 101 Standards of Disclosure for Mineral Projects ("NI 43 101") and has reviewed and approved the technical information in this news release.

Note: All amounts are in US$, except where indicated, and may differ from the MD&A due to rounding.

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ENDEAVOUR OVERVIEW

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4

ENDEAVOUR

HAS UNMATCHED

COMPETITIVE

ADVANTAGE

IN THE WORLD'S

SECOND-LARGEST

GOLD PRODUCING

REGION

TOP

Global pure gold

producer

Largest	1.4-1.5Moz
West African producer	AISC of 850-900/oz
2021 PRODUCTION TARGET
		5