Mr. Jack Garman reports

BROKER AGREEMENT

Endeavour Mining PLC has re-entered into an automatic share purchase plan (ASPP) with its designated broker to facilitate the purchase of the company's issued and outstanding shares under its previously announced normal course issuer bid (NCIB), which commenced on March 24, 2026, and ends on March 23, 2027, or such earlier date as Endeavour may complete its purchases, pursuant to the notice of intention filed with the Toronto Stock Exchange.

The ASPP will facilitate purchases under the NCIB at times when the company would ordinarily not be permitted to make purchases, whether due to regulatory restrictions or customary self-imposed blackout periods.

Purchases under the ASPP will form part of and will not exceed the limits established under the company's previously announced NCIB. All purchases under the NCIB will be executed only on the open market through the facilities of the London Stock Exchange, the TSX, or alternative Canadian trading systems and other designated exchanges. Purchases will be made at the market price of the ordinary shares at the time of acquisition.

Purchases made under the ASPP must comply with applicable securities laws, including TSX requirements, and will count toward the limit set by the NCIB. The ASPP took effect on June 4, 2026.

The broker will not commence purchases under the ASPP until the company provides instruction and will make purchases in accordance with parameters established by the company prior to any blackout period and in compliance with TSX rules, without further instruction from or influence by the company. Any ordinary shares acquired by the company under the NCIB will be cancelled.

The company is not currently in possession of any material undisclosed information in relation to the company.

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, Ivory Coast and Burkina Faso and a strong portfolio of advanced development projects and exploration assets.

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 trading on the London Stock Exchange and the TSX, under the symbol EDV.

We seek Safe Harbor.