Silverco Mining Provides Corporate and Operational Update on the Cusi Property in Mexico Following Listing

Vancouver, British Columbia--(Newsfile Corp. - October 28, 2025) - Quetzal Copper Corp. (TSXV: SICO) (doing business as Silverco Mining Ltd.) ("Silverco" or the "Company") is pleased to provide a corporate and operational update following the successful completion of its listing on the TSXV Venture Exchange (the "TSXV") via its reverse takeover by Silverco Mining Corp. on October 17, 2025.

The Company is pleased to be publicly trading, having established a strong shareholder base, a solid cash position, and a clear path toward expected production in H2 2026 from its Cusi Property in Chihuahua State, Mexico.

Key Highlights:

• Advancing the Cusi Property: The 100%-owned Cusi Property in Chihuahua State, Mexico includes a fully permitted underground silver, lead, zinc mine (approximately 85% of the recovered metal by value was silver in 2022) (the "Cusi Mine"), with a 1,200 tonnes per day mill. The past producing Cusi Mine was put on care and maintenance in 2023 due to low silver prices.
• Capital Raised: Silverco raised C$25 million privately over the previous 18 months, including the most recent financing which was over-subscribed, which enabled it to significantly advance the Cusi Property prior to the TSXV listing.
• Significant Drill Program Underway on the Cusi Property: A 15,000-metre drill program is currently underway, with two drill rigs on site. Consistent drill results are expected through Q4 2025 to Q1 2026. A 5,000-meter drill program was completed in 2024.
• New Mining Zone: Silverco has acquired the San Miguel and La Bamba inset claims which were not held during the previous production of the Cusi Mine. These acquisitions provide a third mining zone which is expected to enable increased mining tonnage.
• Resource Estimate & Preliminary Economic Assessment: Silverco expects to complete a mineral resource estimate on the Cusi Property under National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") in Q4 2025 and a preliminary economic assessment under NI 43-101 on the Cusi Property in Q1 2026, with a view to supporting planned production in H2 2026.
• Company Vision: Management's vision is to transform Silverco into a 10+ million-ounce silver producer in the next three years through the development and production of the Cusi Property, potential expansion and accretive acquisitions.

Mark Ayranto, CEO of Silverco commented: "The completion of our listing on the TSXV marks a major milestone for Silverco. With a strong treasury, an experienced technical team, and a high-quality asset in the fully permitted Cusi Property, we are well positioned to execute on our plan to enter production in the second half of 2026. Our 2025 drilling campaign is already underway, and we look forward to delivering consistent results."