Mr. Matthew Fisher of La Mancha, a shareholder, reports

LA MANCHA INVESTMENTS S. À R. L. FILES EARLY WARNING REPORT

La Mancha Investments Sarl, a wholly owned subsidiary of La Mancha Resource Fund SCSp, advised by La Mancha Resource Capital LLP, made on-market disposals of 367,534 ordinary shares in the capital of Endeavour Mining PLC on Oct. 8, 2025, for aggregate consideration of $22,216,439 (representing a volume-weighted average price per share of $60.45). La Mancha made the disposals for investment management purposes.

Immediately prior to the disposals, La Mancha owned or exercised control or direction over 36,245,872 shares, representing approximately 15.02 per cent of the then-issued and outstanding shares. As a result of the disposals, La Mancha now owns or exercises control or direction over an aggregate of 35,878,338 shares, representing approximately 14.86 per cent of the issued and outstanding shares.

Directly or indirectly, La Mancha may, from time to time, acquire additional securities of Endeavour or dispose of all or a portion of the shares previously acquired or held, through market transactions, private agreements, treasury issuances or otherwise.

La Mancha's registered office is located at 31-33 Ave. Pasteur, L-2311 Luxembourg. Endeavour's registered office is located at 5 Young St., London, W8 5EH, United Kingdom.

La Mancha intends to file an early warning report containing additional information with respect to the foregoing matters, which will be available under Endeavour's SEDAR+ profile, and may also be obtained by contacting: Matthew Fisher, general counsel, La Mancha Resource Capital LLP, legal@lamancha.com, 44-20-3960-2020.