Endeavour Appoints Corporate Brokers Ahead of Its London Stock Exchange Listing on June 14

ENDEAVOUR APPOINTS CORPORATE BROKERS AHEAD

OF ITS LONDON STOCK EXCHANGE LISTING ON JUNE 14

London, June 9, 2021 – Endeavour Mining (TSX: EDV) (OTCQX: EDVMF), which expects to become the largest pure gold producer listed on the Premium Segment of the London Stock Exchange (“LSE”), is pleased to announce the appointment of its sponsor and joint corporate brokers ahead of admission of its ordinary shares to the premium listing segment of the Official List, and to trading on the main market of the LSE (“Admission”).

Endeavour has appointed Barclays Bank PLC (“Barclays”) to act as its sponsor for the Admission, and, in conjunction with Morgan Stanley & Co. International plc (“Morgan Stanley”), to act as Endeavour’s joint corporate brokers thereafter. Joh. Berenberg, Gossler & Co KG (“Berenberg”) and Stifel Nicolaus Europe Limited (“Stifel”) have also been appointed to act as Endeavour’s UK & European broking advisers to further assist in raising its capital markets profile. The appointed corporate brokers and UK & European broking advisers will seek to facilitate market making on the LSE as Endeavour is not intending to raise capital in conjunction with its listing.

It is expected that Admission will occur at 8:00 am BST on June, 14, 2021. Shares will trade on both the TSX and LSE under the ticker symbol “EDV”.

Endeavour has also published its prospectus relating to Admission. The prospectus has been approved by the UK Financial Conduct Authority (the “FCA”) and is available, subject to applicable securities laws, on Endeavour’s website at . A copy of the prospectus will be submitted to the National Storage Mechanism and will be available in due course on the FCA website at . A copy of the prospectus will also be available on SEDAR under Endeavour's profile at . Shareholders should note that the prospectus does not constitute a prospectus for Canadian securities law purposes.

LISTING ADVISORS

Barclays is acting as sponsor to Endeavour on the proposed Admission. STJ Advisors is acting as listing advisor to Endeavour. Linklaters LLP is acting as UK and US counsel to Endeavour and McCarthy Tetrault LLP is acting as Canadian counsel. Clifford Chance LLP is acting as UK and US counsel to Barclays.

ABOUT ENDEAVOUR MINING CORPORATION

Endeavour is one of the world’s senior gold producers and the largest in West Africa, with operating assets across Senegal, Cote 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 sustainable value to its employees, stakeholders and the communities where it operates. Endeavour is listed on the Toronto Stock Exchange, under the symbol EDV.

For more information, please visit .

CONTACT INFORMATION

CAUTIONARY NOTE REGARDING FORWARD-LOOKING INFORMATION

This press release 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 the benefits of a premium listing in the UK with shares traded on the LSE including deeper access to a diverse investor pool with strong understanding of its key operating jurisdictions across West Africa and increased demand for its shares on the assumption that it will qualify for inclusion in the FTSE UK Index Series as well as the MSCI Europe Index, Endeavour’s ability to create sustainable shareholder value over the long term, the potential for continued or future dividends, the approval of the Scheme by shareholders and by the Cayman Islands Court and the expected timing for the Scheme to take effect, the approval of the proposed Admission by the FCA and the LSE and the expected timing of: the FCA’s approval of the Prospectus; Admission; and admission to listing and posting for trading on the Toronto Stock Exchange.

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.

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

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.

Neither the Toronto Stock Exchange nor the Investment Industry Regulatory Organization of Canada accepts responsibility for the adequacy or accuracy of this press release.

IMPORTANT INFORMATION

The dates set out in this press release are indicative only and subject to change. The Scheme is subject to the approval of the Cayman Islands Court at the sanction hearing scheduled for June 9, 2021. The date of Admission will depend, among other things, on the date and time at which the Cayman Islands Court approves the Scheme, the date and time at which the court order sanctioning the Scheme is delivered to the Cayman Islands Registrar of Companies, and the date and time at which the FCA approves the Prospectus for publication.

Barclays Bank PLC, acting through its Investment Bank (“Barclays”), which is authorised by the Prudential Regulation Authority and regulated in the United Kingdom by the FCA and the Prudential Regulation Authority, is acting as Sponsor and corporate broker exclusively for Endeavour and no one else in connection with the transaction and will not be responsible to anyone other than Endeavour for providing the protections afforded to clients of Barclays nor for providing advice in relation to the transaction or any other matter referred to in this press release.

Apart from the responsibilities and liabilities, if any, which may be imposed on Barclays by the UK Financial Services and Markets Act 2000 (the FSMA") or the regulatory regime established thereunder, or under the regulatory regime of any jurisdiction where the exclusion of liability under the relevant regulatory regime would be illegal, void or unenforceable, none of Barclays or any of its subsidiaries, branches or affiliates accepts any responsibility or liability whatsoever for, or makes any representation or warranty, express or implied, as to the contents of this document, including its accuracy, completeness or for any other statement made or purported to be made by any of them, or on their behalf, in connection with Endeavour or the transaction. Each of Barclays and its subsidiaries, branches and affiliates accordingly disclaim to the fullest extent permitted by law all and any responsibility and liability whether arising in tort, contract or otherwise (save as referred to above) in respect of this document or any such statement or otherwise.

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