Mr. Eric Zaunscherb reports

GR SILVER ANNOUNCES EXECUTIVE APPOINTMENT

GR Silver Mining Ltd. has appointed Eric Zaunscherb as president and chief executive officer, effective immediately. He was appointed interim president and interim CEO on March 26, 2026, following the sudden passing of the company's president, CEO, director and founder Marcio Fonseca. Mr. Zaunscherb previously served as the company's CEO from Feb. 28, 2022, to June 30, 2025.

Mr. Zaunscherb noted: "Since Marcio's tragic passing, we have continued to advance our robust 20,000-metre resource expansion drill program on the high-grade Plomosas silver project located near the border between Sinaloa and Durango, Mexico. Our teams have been energized by exciting results, such as our project best ever intercept at the San Marcial area of 45.1 metres true width averaging 1,623 g/t Ag, including 8.25 metres TW averaging 8,579 g/t Ag in drill hole SMS26-04 (see news release, May 19, 2026). Over the next six to 12 months, we will continue to deliver results from that drill program, which will then be followed by a mineral resource estimate update and a planned preliminary economic assessment."

About GR Silver Mining Ltd.

GR Silver Mining is a Canadian-based, Mexico-focused mineral exploration company engaged in cost-effective silver-gold resource expansion on its 100-per-cent-owned assets, located on the eastern edge of the Rosario mining district, in the southeast of Sinaloa state, Mexico. GR Silver Mining controls 100 per cent of the Plomosas project, including both the high-grade silver discovery at the San Marcial area and the former Plomosas underground mine. Recent discoveries in the 78 square kilometres of highly prospective, advanced-stage exploration concessions position the company well for resource expansion at the Plomosas project.

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