Endeavour reports strong Q3-2025 results

London, 13 November 2025 – Endeavour Mining plc (LSE:EDV, TSX:EDV, OTCQX:EDVMF) (“Endeavour”, the “Group” or the “Company”) is pleased to announce its operating and financial results for Q3-2025 and YTD-2025, with highlights provided in Table 1 below.

¹Continuing Operations excludes the settlement of historic liabilities under the original sale agreement of the Boungou mine. ²This is a non-GAAP measure, refer to the non-GAAP Measures section for further details. ³Realised gold prices are inclusive of the Sabodala-Massawa stream and the realised gains/losses from the Group’s revenue protection programme. ⁴From all operations; calculated as Operating Cash Flow less Cash used in Investing activities. ⁵Last Twelve Months (“LTM”) Trailing EBITDA adj includes EBITDA generated by discontinued operations.

Q3-2025 marked another solid operational quarter placing us firmly on track to achieve our full-year guidance. Strong year-to-date production has positioned us to achieve the top half of our production guidance with AISC within the guidance range, when adjusted for the impact of higher gold prices on royalty costs.

Our Q3-2025 operational performance was in line with our planned mine sequence, despite the impact of a heavier than normal wet season. This performance, coupled with higher gold prices, underpinned a 59% increase in free cash flow generation in Q3, bringing free cash flow generation to $680 million year-to-date, and to nearly a billion dollars over the last twelve months. We remain focused on maximising free cash flow generation from every ounce of gold that we produce, to ensure that our margins grow with the gold price.

Given the strong free cash flow generation, we further strengthened our balance sheet this quarter by not only lowering our leverage, but reducing our gross debt as well, through the full repayment of the drawn portion of our revolving credit facility.

Shareholder returns increased, following payment of our record $150 million dividend early in Q4, we continued to buyback shares, bringing year-to-date returns to $233 million, before the declaration of our H2-2025 dividend that we will announce in Q1-2026, which is expected to increase our total returns to at least $346 million. We have now returned over $1.4 billion to our shareholders over the last four and half years, or 83% above our minimum commitment, and as we look forward to our next phase of growth, we expect to be well positioned to continue delivering sector-leading returns throughout.

Our Assafou project continues to advance on schedule, with the environmental permit now approved and the Definitive Feasibility Study on track to be completed in Q1-2026, progressively de-risking our timeline to first gold.

In parallel, we continue to accelerate exploration to delineate high-priority near-mine opportunities at Houndé, Sabodala-Massawa, Ity and Assafou, and identify greenfield opportunities both in West Africa, and in other, similar, highly-fertile tier 1 gold provinces that have limited exploration maturity, where we can lever our exploration expertise and gain an early mover advantage. We expect to announce our new exploration strategy in Q4, which will support continued mine life extension and improvements across our existing portfolio, and drive our next phase of organic growth, beyond Assafou.

Given our high-quality portfolio, underpinned by a top tier organic growth pipeline, we are well positioned to sustainably deliver sector-leading shareholder returns and organic growth, generating value for all our stakeholders.

Ian Cockerill
Chief Executive Officer

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QUALIFIED PERSONS

Brad Rathman, Vice President - Operations of Endeavour Mining plc., a Fellow of the Australasian Institute of Mining and Metallurgy (AusIMM), 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.

CONTACT INFORMATION

ABOUT ENDEAVOUR MINING PLC

Endeavour Mining is one of the world’s senior gold producers and the largest in West Africa, with operating assets across Senegal, Côte d’Ivoire and Burkina Faso and a strong portfolio of advanced development projects and exploration assets in the highly prospective Birimian Greenstone Belt across West Africa.

A member of the World Gold Council, Endeavour is committed to the principles of responsible mining and delivering meaningful value to people and society. Endeavour is admitted to listing and to trading on the London Stock Exchange and the Toronto Stock Exchange, under the symbol EDV.

For more information, please visit www.endeavourmining.com.

CAUTIONARY STATEMENT ON FORWARD-LOOKING INFORMATION

This document contains "forward-looking statements" within the meaning of applicable securities laws. All statements, other than statements of historical fact, are "forward-looking statements", including but not limited to, statements with respect to Endeavour's plans and operating performance, the estimation of mineral reserves and resources, the timing and amount of estimated future production, costs of future production, future capital expenditures, the success of exploration activities, the anticipated timing for the payment of a shareholder dividend and statements with respect to future dividends payable to the Company’s shareholders, the completion of studies, mine life and any potential extensions, the future price of gold and the share buyback programme. Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as "expects", "expected", "budgeted", "forecasts", "anticipates", "believes", "plan", "target", "opportunities", "objective", "assume", "intention", "goal", "continue", "estimate", "potential", "strategy", "future", "aim", "may", "will", "can", "could", "would" and similar expressions.

Forward-looking statements, while based on management's reasonable estimates, projections and assumptions at the date the statements are made, are subject to risks and uncertainties that may cause actual results to be materially different from those expressed or implied by such forward-looking statements, including but not limited to: risks related to the successful 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 licences by government authorities, or the expropriation or nationalisation of any of Endeavour’s property; risks associated with illegal and artisanal mining; environmental hazards; and risks associated with new diseases, epidemics and pandemics.

Although Endeavour has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. Please refer to Endeavour's most recent Annual Information Form filed under its profile at www.sedarplus.ca for further information respecting the risks affecting Endeavour and its business.

The declaration and payment of future dividends and the amount of any such dividends will be subject to the determination of the Board of Directors, in its sole and absolute discretion, taking into account, among other things, economic conditions, business performance, financial condition, growth plans, expected capital requirements, compliance with the Company's constating documents, all applicable laws, including the rules and policies of any applicable stock exchange, as well as any contractual restrictions on such dividends, including any agreements entered into with lenders to the Company, and any other factors that the Board of Directors deems appropriate at the relevant time. There can be no assurance that any dividends will be paid at the intended rate or at all in the future.

NON-GAAP MEASURES

Some of the indicators used by Endeavour in this press release represent non-IFRS financial measures, including "all-in margin", "all-in sustaining cost", "net cash / net debt", "EBITDA", "adjusted EBITDA", "net cash / net debt to adjusted EBITDA ratio", "cash flow from continuing operations", "total cash cost per ounce", "sustaining and non-sustaining capital", "net earnings", "adjusted net earnings", "free cash flow", "operating cash flow per share", "free cash flow per share", and "return on capital employed". These measures are presented as they can provide useful information to assist investors with their evaluation of the pro forma performance. Since the non-IFRS performance measures listed herein do not have any standardised definition prescribed by IFRS, they may not be comparable to similar measures presented by other companies. Accordingly, they are intended to provide additional information and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. Please refer to the non-GAAP measures section in this press release and in the Company’s most recently filed Management Report for a reconciliation of the non-IFRS financial measures used in this press release.