GR Silver Announces a Celebration of Life for Founder Márcio Fonseca

VANCOUVER, BC, May 20, 2026 /CNW/ - GRSilverMiningLtd. ("GRSilverMining"orthe"Company") (TSXV: GRSL) (OTCQX: GRSLF) (FRANKFURT: GPE) will be a hosting a Celebration of Life for Founder, Director, former President and Chief Executive Officer, friend, and mentor Márcio Fonseca who passed away suddenly on March 25, 2026. The event will be held the afternoon of May 28 in Vancouver, British Columbia, from 1:30 to 3:30 pm PT. To assist with planning, friends and colleagues are asked to RSVP by May 24. An "In Memoriam" has been prepared to honour Márcio and may be found on the GR Silver Mining website at this link.

Márcio had a wonderful legacy of giving generously. We will honour Márcio by continuing that legacy and ask his many friends, colleagues, and fellow industry participants to honour him as well by Donating Now to the Marcio Bastos Fonseca Charitable Giving Fund at the Vancouver Foundation.

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%-owned assets, located on the eastern edge of the Rosario Mining District, in the southeast of Sinaloa State, Mexico. GR Silver Mining controls 100% of the Plomosas Project, including the former Plomosas underground mine and wide, high-grade silver mineralized zones at the San Marcial Area. Recent discoveries in the 78 km² of highly prospective, advanced-stage exploration concessions position the Company well for resource expansion at the Plomosas Project.

GRSilver Mining Ltd.
Eric Zaunscherb, Executive Chair, Interim President & Interim CEO

CautionaryStatement Regarding Forward-Looking Information
Thispressreleasecontains"forward-lookingstatements"withinthemeaningofapplicableCanadiansecurities legislationandinformationthatarebasedonthebeliefsofmanagementandreflecttheCompany'scurrent expectations.Whenusedinthispressrelease,thewords"estimate","project","belief","anticipate","intend", "expect","plan","predict","may"or"should"andthenegativeofthesewordsorsuchvariationsthereonor comparableterminologyareintendedtoidentifyforward-lookingstatementsandinformation.Suchstatements andinformationreflect the current view of the Company. Risks anduncertaintiesmaycause actualresultstodiffer materiallyfromthosecontemplatedinthoseforward-lookingstatementsandinformation.Bytheirnature,forward-lookingstatementsinvolveknownandunknownrisks,uncertaintiesandotherfactorswhichmaycauseouractual results,performanceorachievements,orotherfutureevents,tobemateriallydifferentfromanyfutureresults, performance orachievements expressed or implied by suchforward-looking statements.

NeithertheTSXVentureExchangenoritsRegulationServicesProvider(asthattermisdefinedinthe policiesofthe TSXVentureExchange)acceptsresponsibilityfortheadequacyoraccuracyofthispress release.

SOURCE GR Silver Mining Ltd.

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