GR Silver Closes $20.0 Million Bought Deal Offering with Full Exercise of Over-Allotment Option

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VANCOUVER, BC, Dec. 17, 2025 /CNW/ - GR Silver Mining Ltd. ("GR Silver Mining" or the "Company") (TSXV: GRSL) (FRANKFURT: GPE) announces that it has completed its previously announced (see news release dated December 1, 2025) underwritten private placement offering (the "Offering") issuing 66,666,832 units of the Company (the "Units") at a price of $0.30 per Unit (the "Issue Price"), for aggregate gross proceeds of $20,000,049.60. The Offering included 8,332,833 Units ($2,499,849.90) sold pursuant to the full exercise of the over-allotment option granted to Research Capital Corporation as the sole bookrunner and co-lead underwriter (and together with Red Cloud Securities Inc. as co-lead underwriter, collectively, the "Underwriters") pursuant to the Underwriting Agreement (defined below).