ENDEAVOUR REPORTS FATAL ACCIDENT AT LAFIGUÉ MINE London, 1 June 2026 – Endeavour Mining plc (LSE:EDV, TSX:EDV, OTCQX:EDVMF) (“Endeavour” or the “Company”) regrets to report that a contractor colleague passed away on 29 May following a heavy mining equipment incident that occurred during water drainage activities, being carried out by a civil engineering contractor, at the Lafigué mine in Cote d'Ivoire. All relevant authorities have been informed, and Endeavour is conducting a comprehensive investigation into the incident to understand its root causes.