GR Silver Mining Ltd.
GR Silver Mining holds a 78 km2 100%-owned package in the historic Rosario Mining District of Sinaloa, Mexico, anchored by the former-producing Plomosas polymetallic mine and the San Marcial deposit. A 20,000-metre step-out drill program at San Marcial and pilot-plant engineering/metallurgical work at Plomosas are both underway in 2026, targeting an updated resource estimate and a PEA by late 2026; Mexico's environmental regulator has confirmed a new environmental impact authorization will not be required to restart the former Plomosas mine.
Notable vs. Peers
- Financials score of 9.2/10 is stronger than the peer average of 6.6/10.
Lifecycle Milestones
A relative ranking of how closely this company matches the profile of juniors that have actually been acquired — not a probability, and not a reason to buy. Acquisitions are rare: only a few dozen significant deals happen a year across a universe of thousands of juniors, so even a high score here describes a long shot. The strongest signal the underlying research identifies — whether a major already holds a JV, earn-in, or 5–19.9% strategic stake — isn't tracked yet and is absent from this score.
Your Rankings
Management Team
Interim President and Chief Executive Officer of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico, and also a member of its board of directors. GR Silver Mining's own About Us page publishes only a single summary sentence for each of its officers: "Canadian geologist with over 30 years of mining capital markets experience."
Chief Financial Officer of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico. GR Silver Mining's own About Us page publishes only a single summary sentence for each of its officers: "Chartered Professional Accountant with broad financial and advisory expertise in the resource sector."
Vice President Exploration of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico. GR Silver Mining's own About Us page publishes only a single summary sentence for each of its officers: "Over 20 years of district-scale exploration and drilling program leadership."
Country Manager of GR Silver Mining Ltd., which is advancing the Plomosas Project in Sinaloa, Mexico. GR Silver Mining's own About Us page publishes only a single summary sentence for each of its officers: "Geologist with over 35 years of experience leading exploration, permitting, and development of major silver projects from discovery to production."
Insiders, Investors & Smart Money
Notable shareholders and insiders whose involvement is worth knowing about, plus what we're seeing from institutional/large-investor activity.
Two GR Silver Mining directors, Marcio Bastos Fonseca and Eric Zaunscherb, bought shares with their own money in December 2025 and February 2026, with no insider selling in that period -- a genuine, if modest, vote of confidence. No producer or resource fund currently holds a meaningful stake in the company.
No notable insiders tracked for this miner yet.
Reports, Presentations & Documents
Plomosas Project (San Marcial + Plomosas Mine Area + San Juan/La Colorada Area combined, Sinaloa, Mexico). NI 43-101 'Technical Report and Mineral Resource Update for the Plomosas Project' (ARSENEAU Consulting Services Inc., QP Dr. Gilles Arseneau, P.Geo.), effective 15 Mar 2023, filed on SEDAR 3 May 2023 (announced via 4 May 2023 news release, which also corrected a silver-recovery-rate miscalculation in the San Marcial AgEq figure only -- tonnage/grade/contained-Ag were unaffected). Total Indicated = 15 Mt @ 117 g/t Ag for 55 Moz contained silver (84.5 Koz Au, 64 Kt Pb, 90 Kt Zn co-products; 85 Moz AgEq). No Measured category exists anywhere in the Plomosas resource -- Indicated is the full M+I figure. Total Inferred = 9 Mt @ 78 g/t Ag for 22 Moz Ag (49 Moz AgEq), excluded from ouncesFound per repo's M+I-only convention. GR Silver has since drilled an additional ~18,000 m through end-2025 at San Marcial (new parallel zones, step-out program continuing into 2026) that is not yet incorporated into this resource model -- a further update was not found as filed/published as of this pass (Aug 2026).