Transaction in Own Shares

Rhea-AI Summary

Endeavour Mining plc (LSE:EDV, TSX:EDV) has executed a share buyback transaction on September 12, 2025, purchasing 15,000 ordinary shares through Stifel Nicolaus Europe Limited. The shares were acquired at prices ranging from 2,814.00 to 2,870.00 GBp, with a volume-weighted average price of 2,829.58 GBp.

Following the cancellation of the repurchased shares, Endeavour will have 241,449,712 ordinary shares in issue, with no shares held in treasury. This transaction is part of the company's buyback programme announced on March 20, 2025.

Positive

• Share buyback demonstrates confidence in company value and commitment to returning capital to shareholders
• No shares held in treasury indicates efficient capital management
• Systematic execution of buyback program with multiple trades throughout the day shows disciplined approach

Negative

• Share price variation of 2% (2,814-2,870 GBp) during buyback execution indicates some price volatility

        

ENDEAVOUR ANNOUNCES TRANSACTION IN OWN SHARES

London, 15 September 2025 – Endeavour Mining plc (LSE:EDV, TSX:EDV) (“the Company”) announces it has purchased the following number of its ordinary shares of USD 0.01 each from Stifel Nicolaus Europe Limited.

Aggregated information

Dates of purchase:	12 September 2025
Aggregate number of ordinary shares of USD 0.01 each purchased:	15,000
Lowest price paid per share (GBp):	2,814.00
Highest price paid per share (GBp):	2,870.00
Volume weighted average price paid per share (GBp):	2,829.58

Following the cancellation of the repurchased shares, the Company will have no ordinary shares in treasury and 241,449,712 ordinary shares in issue. Therefore the total voting rights in the Company will be 241,449,712. This figure for the total number of voting rights may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure Guidance and Transparency Rules.

These share purchases form part of the Company's buy-back programme announced on 20 March 2025.

Transaction details

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 (the Market Abuse Regulation), the table below contains detailed information of the individual trades made by Stifel Nicolaus Europe Limited as part of the buyback programme.

Schedule of purchases

Shares purchased: Endeavour Mining plc (ISIN: GB00BL6K5J42)

Dates of purchases: 12 September 2025

Investment firm: Stifel Nicolaus Europe Limited

Individual transactions

Transaction date and time	Volume	Price (GBp)	Trading Venue
12 Sep 2025, 10:31 AM	21	2,870.00	LSE
12 Sep 2025, 10:31 AM	647	2,870.00	LSE
12 Sep 2025, 10:31 AM	179	2,870.00	LSE
12 Sep 2025, 10:31 AM	153	2,870.00	LSE
12 Sep 2025, 12:43 PM	62	2,852.00	LSE
12 Sep 2025, 12:43 PM	938	2,852.00	LSE
12 Sep 2025, 01:44 PM	1,000	2,830.00	LSE
12 Sep 2025, 02:01 PM	200	2,826.00	LSE
12 Sep 2025, 02:01 PM	169	2,826.00	LSE
12 Sep 2025, 02:01 PM	400	2,826.00	LSE
12 Sep 2025, 02:01 PM	231	2,826.00	LSE
12 Sep 2025, 02:01 PM	100	2,826.00	LSE
12 Sep 2025, 02:01 PM	588	2,826.00	LSE
12 Sep 2025, 02:34 PM	200	2,840.00	LSE
12 Sep 2025, 02:34 PM	700	2,840.00	LSE
12 Sep 2025, 02:34 PM	100	2,840.00	LSE
12 Sep 2025, 02:34 PM	201	2,838.00	LSE
12 Sep 2025, 02:34 PM	111	2,838.00	LSE
12 Sep 2025, 02:35 PM	1,000	2,838.00	LSE
12 Sep 2025, 03:03 PM	1,000	2,834.00	LSE
12 Sep 2025, 03:36 PM	248	2,822.00	LSE
12 Sep 2025, 03:36 PM	500	2,822.00	LSE
12 Sep 2025, 03:36 PM	252	2,822.00	LSE
12 Sep 2025, 03:45 PM	1,000	2,820.00	LSE
12 Sep 2025, 03:45 PM	517	2,820.00	LSE
12 Sep 2025, 03:46 PM	483	2,820.00	LSE
12 Sep 2025, 04:10 PM	1,000	2,814.00	LSE
12 Sep 2025, 04:23 PM	72	2,816.00	LSE
12 Sep 2025, 04:23 PM	928	2,816.00	LSE
12 Sep 2025, 04:23 PM	127	2,816.00	LSE
12 Sep 2025, 04:23 PM	873	2,816.00	LSE
12 Sep 2025, 04:24 PM	1,000	2,816.00	LSE

CONTACT INFORMATION

For Investor Relations Enquiries:	For Media Enquiries:
Jack Garman	Brunswick Group LLP in London
Vice President of Investor Relations	Carole Cable, Partner
+44 203 011 2723	+ 44 207 404 5959
investor@endeavourmining.com	ccable@brunswickgroup.com

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, 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 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 NOTE REGARDING FORWARD-LOOKING INFORMATION

This news release contains "forward-looking statements" within the meaning of applicable securities laws.  All statements, other than statements of historical fact, are "forward-looking statements". Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as "expects", "expected", "budgeted", "forecasts", and "anticipates".

Forward-looking statements, while based on management's best estimates and assumptions, 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 integration of acquisitions; risks related to international operations; risks related to general economic conditions and credit availability, actual results of current exploration activities, 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; accidents, 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 regulation of mining operations, tax rules and regulations, and political and economic developments in countries in which Endeavour operates. 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.

Attachment

• Transaction in own shares

FAQ

How many shares did Endeavour Mining (LSE:EDV) purchase on September 12, 2025?

Endeavour Mining purchased 15,000 ordinary shares on September 12, 2025, at prices between 2,814.00 and 2,870.00 GBp.

What is the current total number of voting rights in Endeavour Mining after the share buyback?

Following the share cancellation, Endeavour Mining has 241,449,712 total voting rights, which corresponds to the number of ordinary shares in issue.

What was the volume weighted average price (VWAP) for Endeavour Mining's share buyback?

The volume weighted average price paid per share was 2,829.58 GBp during the September 12, 2025 buyback transactions.

When did Endeavour Mining announce this buyback programme?

Endeavour Mining announced this share buyback programme on March 20, 2025.

How many shares does Endeavour Mining hold in treasury after this transaction?

Following the cancellation of the repurchased shares, Endeavour Mining will have no ordinary shares in treasury.