Western Copper and Gold Provides Update on Strategic Partnership with Mitsubishi Materials

Vancouver, British Columbia--(Newsfile Corp. - June 4, 2026) - Western Copper and Gold Corporation (TSX: WRN) (NYSE American: WRN) ("Western" or the "Company") is pleased to provide an update on its ongoing strategic partnership with Mitsubishi Materials Corporation ("Mitsubishi Materials"). Western and Mitsubishi Materials are in productive dialogue to extend the investor rights agreement between both parties, and hope to be able to conclude said extension in the near term.