Welcome to our dedicated page for Meridian Mining news (Ticker: MRRDF), a resource for investors and traders seeking the latest updates and insights on Meridian Mining stock.
Meridian Mining Plc (OTCQX: MRRDF), historically known as Meridian Mining UK Societas, generates a steady flow of news tied to its gold, copper, silver and zinc projects in Brazil’s State of Mato Grosso. Company releases highlight progress at the advanced stage Cabaçal VMS gold‑copper project, the Santa Helena Au‑Cu‑Ag & Zn project, and regional exploration targets such as Santa Fé, Cigarra, Sucuri South, Santa Helena North and Alvorada.
Investors following MRRDF news can read detailed updates on Cabaçal’s technical milestones, including the completion of extensive diamond drilling for the Definitive Feasibility Study, publication of the NI 43‑101 Pre‑Feasibility Study Technical Report, and the engagement of Ausenco do Brasil Engenharia Ltda. as lead engineer for the DFS. Releases also cover metallurgical testwork programs, permitting steps in Mato Grosso, and the transfer of key mining titles to the company’s Brazilian subsidiary, Rio Cabaçal Mineração Ltda.
Meridian’s news feed also reports on corporate developments such as the company’s conversion to Meridian Mining Plc, board and executive appointments, shareholder meeting results, and a non‑binding Letter of Intent with Aurubis AG for technical collaboration on Cabaçal’s future copper‑gold‑silver concentrates. Exploration‑focused updates describe drill results from Cabaçal, Santa Helena and regional prospects, as well as geophysical and geochemical surveys across the Cabaçal VMS belt and the Jaurú and Araputanga greenstone belts.
Stock Titan’s MRRDF news page aggregates these disclosures so readers can review project, exploration and corporate announcements in one place and track how Meridian’s Brazilian gold‑copper VMS belt strategy evolves over time.
Meridian (OTCQX: MRRDF) released updated Measured & Indicated resources for the Cabaçal and Santa Helena Central deposits (effective Dec 31, 2025) to support its Q4 2026 Definitive Feasibility Study (DFS) workstreams.
Cabaçal M&I: 70.1 Mt @ 0.6 g/t Au, 0.3% Cu, 1.3 g/t Ag (≈1.3 Moz Au, 0.5 Blbs Cu, 3.0 Moz Ag). Santa Helena Central M&I maiden open-pit: 5.3 Mt @ 0.6 g/t Au, 0.4% Cu, 15.5 g/t Ag, 1.9% Zn, 0.4% Pb (≈95.8 Koz Au, 50.4 Mlbs Cu, 2.6 Moz Ag, 217.4 Mlbs Zn, 49.9 Mlbs Pb).
Company noted optimized metallurgical recoveries for DFS, expanded granted exploration titles, and that Cabaçal resource growth used higher commodity price assumptions versus March 2025.
Meridian Mining (OTCQX: MRRDF) announced executive and corporate-structure updates effective November–December 2025.
The company appointed David Halkyard as Chief Financial Officer effective November 25, 2025 and named Catherine Apthorpe as Corporate Secretary following the resignation of Mariana Bermudez.
Meridian completed a legal name change to Meridian Mining Plc after converting to a UK public limited company, with trading to reflect the change at market open on December 10, 2025. The company reported a new ISIN GB00BVPND783 and new CUSIP G6017H 103; the prior identifiers are inactive. Management said there is no change to trading symbols or share capital.
Meridian Mining (OTCQX: MRRDF) announced that the Cabaçal Au‑Cu‑Ag project's Preliminary Licence (PL) has been formalized via publication in the Official Gazette of the State of Mato Grosso on November 3, 2025. The company plans to submit Cabaçal's Installation Licence (IL) in H1 2026 and is engaging with potential project finance groups to align financing with the IL and Final Investment Decision. Meridian also submitted a PL application for the Santa Helena Au‑Cu‑Ag & Zn project. Meridian highlighted >2 years of environmental and social studies, 12 months of public consultations, and a PL process that began in Q4 2021.
The announcement was reviewed and approved by Meridian's Qualified Person, Erich Marques, B.Sc., FAIG.
Meridian Mining (OTCQX: MRRDF) announced that Mato Grosso's CONSEMA council unanimously approved the Preliminary Licence (PL) for the Cabaçal Au-Cu-Ag project on October 29, 2025.
The decision follows SEMA's positive technical opinion based on the project's EIA/RIMA. The PL now moves to formal issuance via the State of Mato Grosso gazette, and Meridian said it is not aware of risks to gazetting. Meridian's Definitive Feasibility Study is advancing toward publication in 2026 and the Installation License application is progressing toward submission.
Meridian (OTCQX: MRRDF) completed the final phase of the Cabaçal DFS drill program on October 7, 2025, reporting multiple shallow, stacked Au-Cu-Ag intersections that will feed 2026 resource/reserve upgrades.
Key assay highlights include CD-760: 27.5m @ 1.9 g/t AuEq and 12.8m @ 4.9 g/t AuEq, CD-743: 24.5m @ 1.9 g/t AuEq, and CD-752: 32.2m @ 1.2 g/t AuEq. Greenfields drilling at Cigarra identified a 2.0 km VMS trend with initial results including 3.1m @ 0.5 g/t Au and 6.2 g/t Ag and peak assays of 1.5 g/t Au and 12.1 g/t Ag. Meridian reports ~CAD 60 million cash on hand and ongoing exploration drilling.
Meridian Mining (OTCQX:MRRDF) has reported significant drilling results from its Santa Helena Au-Cu-Ag & Zn project, with multiple high-grade intersections including CD-727 with 15.2m @ 7.4g/t AuEq and CD-719 with 8.4m @ 10.2g/t AuEq. The company also announced a new gold exploration frontier at Santa Fé, where sampling of the Aguapei Formation revealed gold mineralization with values up to 1.5g/t Au in channel samples.
The drilling program at Santa Helena continues to deliver strong results in the western sectors, with true widths approximately 85-95% of down-hole widths. The company has also expanded its regional exploration efforts, commencing drilling at the Cigarra Cu-Au prospect and identifying new potential in the Aguapei Formation, which has been a significant gold producer in the Alto Guaporé gold province.
Meridian Mining (OTCQX: MRRDF) announced key management changes and project updates. The company appointed David Halkyard as Interim CFO, replacing Soraia Morais, and promoted Vitor Hugo de Sousa Belo to Chief Development Officer (CDO) to oversee the Cabaçal project development.
The company has completed its Definitive Feasibility Study (DFS) drill program at Cabaçal, executing 591 holes for 66,487m of diamond drilling. Additionally, Meridian achieved a significant milestone with the transfer of mining titles for the Cabaçal and Santa Helena projects to its Brazilian subsidiary, Rio Cabaçal Mineração Ltda (RCM). The company is progressing toward a decision to mine in 2027, with metallurgical testing underway at SGS Lakefield in Canada.
Meridian Mining (OTCQX:MRRDF) has reported significant drilling results from its Cabaçal Au-Cu-Ag VMS project, highlighted by hole CD-702 intersecting 28.6m @ 3.5g/t AuEq (2.6% CuEq) from 127.6m depth, including multiple high-grade copper zones with peak assays of 10.6% Cu and 11.0% Cu.
The company is nearing completion of its Definitive Feasibility Study (DFS) infill drilling program, with results expected to improve both grade and density modeling. Additionally, Meridian has been granted two new exploration licenses totaling 14,933 Ha, including the Alvorada copper prospect which shows the belt's strongest historical copper-in-stream geochemical value of 164ppm Cu.
The company continues to advance its regional exploration program across multiple prospects including Cigarra, Santa Fé, and Sucuri South, positioning Cabaçal to emerge as a premier gold-copper VMS belt in South America.
Meridian Mining UK S (OTCQX: MRRDF) held its Annual and Special Meeting of shareholders on June 24, 2025, with 43.11% of outstanding shares represented. Shareholders approved all proposed items, including the election of directors, with each nominee receiving over 98% approval.
Key approvals included the reappointment of auditors KPMG LLP and PKF Littlejohn LLP, adoption of a new Omnibus Incentive Plan, and authorization for share issuance. Notably, shareholders approved the company's planned conversion to a public limited company (PLC), including a capital reduction expected around July 23, 2025, and a name change to Meridian Mining PLC expected by August 31, 2025.
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