Kootenay Silver files PEA: US$763M after-tax NPV, 41% IRR at La Cigarra

Kootenay Silver Announces Positive PEA with a US$763 Million After-Tax NPV & 41% IRR for La Cigarra Silver Project Canada NewsWire The Project includes a 14-year open-pit silver project delivering strong economics, a rapid 1.9   year payback, and a 63.7-million-ounce payable silver production profile with significant exploration upside remaining along a 9-kilometre mineralized trend. VANCOUVER, BC , June 15, 2026 /CNW/ - Kootenay Silver Inc. (the "Company" or "Kootenay") (TSXV: KTN) (OTCQX: KOOYF) is pleased to announce the results of a positive Preliminary Economic Assessment ("PEA") i  for its 100%-owned La Cigarra Silver Project ("La Cigarra" or the "Project") in Chihuahua, Mexico. The La Cigarra Project is situated within the well-established Parral Mining District of Chihuahua State, Mexico), which hosts two nearby mining operations, the Santa Barbara Mine and the San Francisco Del Oro Mine.

Both mines are active silver producers located approximately 20–30 kilometres to the south of La Cigarra along the same mineralized trend and are actively mining to depths of up to 2,000 kilometres deep. Together, these two operations produced 440 million ounces of silver from 1650 to 1988 (Grant and Ruiz, 1988) with both operations still in production today. Readers are cautioned that the information disclosed from adjacent properties is not necessarily indicative to the mineralization on the Project that is the subject of this disclosure.  Key Highlights of the PEA All monetary values are in U.S. dollars unless otherwise noted.

Project Economics After-tax net present value at consensus metal prices ii  (5% discount rate): $763 million After-tax internal rate of return (IRR): 41% After-tax net present value at spot metal prices iii  (5% discount rate): $1,295 million and IRR of 64% Capital and Cost Structure Initial capital cost