• Silverco released an independent PEA for its 100%-owned La Negra underground mine in Querétaro, Mexico.
• Base case economics at US$ 50/oz silver: after-tax NPV(5%) of US$ 329 million; after-tax IRR of 131%; payback of 2 years.
• Mine plan targets 8.2-year life; 2,500 tpd steady-state throughput from H2 2027; average annual output of 4.1 million AgEq ounces.
• Initial capital set at US$ 20.9 million; life-of-mine AISC estimated at US$ 24.86 per payable AgEq ounce.
• Resource update: Indicated 15.23 Mt at 201 g/t AgEq for 98 million AgEq ounces; Inferred 2.26 Mt at 174 g/t for 13 million.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Silverco Mining Ltd. published the original content used to generate this news brief via Newsfile (Ref. ID: 202609210630NEWSFILECNPR____20260921_315153_1) on September 21, 2026, and is solely responsible for the information contained therein.