• Ramp-up momentum continues with 15,667 dry metric tonnes of zinc and silver-lead concentrates produced
• Access established to high-grade silver Upper North Lode, expected to enhance metal output and cash flow
• First 11,000 wet metric tonnes of zinc concentrate shipped in October, with silver-lead concentrate to follow

Polymetals Resources Ltd has reported strong operational progress at its Endeavor Silver-Zinc Mine during the September 2025 quarter. The company produced 15,667 dry metric tonnes of zinc and silver-lead concentrates, with access established to the high-grade silver Upper North Lode, which is expected to significantly enhance metal output and cash flow. The first 11,000 wet metric tonnes of zinc concentrate was shipped in October, with the first silver-lead concentrate shipment scheduled for November. The company also continued near-mine drilling, completed a seismic survey, and commenced regional exploration work. Polymetals remains focused on operational excellence, commercial delivery of concentrates, balance sheet discipline, and discovery of new ore bodies to 'fill the mill'. The Endeavor Mine is now successfully restarted and generating cash flow, offering significant strategic optionality across silver, zinc, lead, and potential other metals. The company expects to reach steady-state operations during the December quarter.

Polymetals expects to reach steady-state operations at the Endeavor Mine during the December 2025 quarter.

Polymetals remains focused on operational excellence, commercial delivery of concentrates, balance sheet discipline, and discovery of new ore bodies to 'fill the mill' and extend the mine life beyond the current ten-year plan.