GR Silver CEO Fonseca dies; Zaunscherb added in interim

Executive Summary

• GR Silver Mining Ltd. announces the sudden passing of its President, CEO, and Founder, Marcio Fonseca.
• The Board of Directors has appointed Executive Chair Eric Zaunscherb as the interim President and interim CEO.
• Mr. Fonseca was a 30-year veteran of the mining and mining finance sectors and a key figure in the company's operations in Mexico.

Key Details

• Event: Sudden death of Marcio Fonseca, who served as President, Chief Executive Officer, and Director.
• Interim Appointment: Eric Zaunscherb (Executive Chair) appointed as interim President and interim CEO.
• Background on Interim CEO: Mr. Zaunscherb previously served as the company's CEO from February 28, 2022, to June 30, 2025.
• Marcio Fonseca's Tenure: Founder of GR Silver Mining; integral part of management and operations teams in Mexico; 30-year career in mining and mining finance.
• Professional Affiliations: Long-standing member of the Association of Professional Engineers and Geoscientists of the Province of B.C. and the Australasian Institute of Mining and Metallurgy.
• Company Context: GR Silver Mining is a Canadian-based, Mexico-focused mineral exploration company engaged in silver-gold resource expansion on its 100%-owned assets in the Rosario mining district (Plomosas project).

Notable Quotes

• "Our hearts are heavy today with the passing of our dear friend and colleague Marcio. Our deepest condolences go out to Marcio's close family and friends in this time of immense sadness. Marcio did everything with absolute passion and integrity. His big heart and dedication radiated through our company. Marcio is a great example of true and honest leadership to all of us in the mining industry, and we will miss him greatly. One of Marcio's legacies is a talented team of explorationists and administrators in Canada and Mexico that will continue to make him proud as we move the company forward." — Eric Zaunscherb, Executive Chair