Meridian Announces Filing of the NI 43-101 Definitive Feasibility Study Technical Report for the Cabaçal Gold-Copper-Silver Deposit in Brazil

(LSE: MNO) (TSX: MNO) (FSE: N2E0) (OTCQX: MRRDF) Meridian Mining plc has filed its independent Definitive Feasibility Study technical report (DFS Technical Report) for the advanced Cabaçal Au-Cu-Ag Project located in Mato Grosso, Brazil, with an effective date of September 15, 2026. The DFS Technical Report, dated October 28, 2026, is titled 'Cabaçal Gold-Copper Project NI 43-101 Technical Report & Definitive Feasibility Study, Mato Grosso, Brazil.' The base case outlined in the DFS Technical Report shows an after-tax NPV5 of USD 2.1 billion and an IRR of 108%, based on a pre-production capital cost of USD 322 million, with capital repayment in 0.9 years. The metals price scenario used in the study assumes USD 3,570 per ounce of gold, USD 5.03 per pound of copper, and USD 50.17 per ounce of silver, net of tax credits. The Cabaçal project is projected to have a low All-in-Sustaining-Cost of USD 1,056 per ounce of gold equivalent and an average annual production profile of 183,526 ounces of gold equivalent over years 1-5. The project benefits from high metallurgical recovery, a low life-of-mine strip ratio of 1.4:1, and the low operating cost environment of Brazil. The Cabaçal Mineral Reserve estimate consists of Proven and Probable reserves of 56.04 million tonnes at 0.61g/t gold, 0.35% copper, and 1.33g/t silver, using a 0.138 g/t gold equivalent cut-off grade. The DFS Technical Report was prepared by Tommaso Roberto Raponi (P. Eng), Principal Metallurgist with Ausenco Engineering Canada ULC; Scott Elfen (P. E. & P.Eng.), Global Lead Geotechnical and Civil Services with Ausenco Engineering Canada ULC; Porfirio Cabaleiro Rodriguez (FAIG), Senior Mining Engineer with GE21 Consultoria Mineral; Leonardo Soares (BSc. (Geo) MAIG), Senior Geologist with GE21 Consultoria Mineral; and Norman Lotter (P.Eng., PrEng., C.Eng.), President and Consulting Engineer with Flowsheets Metallurgical Consulting Inc. Qualified Person Mr Erich Marques, B.Sc., FAIG, Chief Geologist of Meridian Mining and a non-independent Qualified Person as defined by National Instrument 43-101, has reviewed and approved the technical disclosure in the news release. Meridian Mining is focused on the development and exploration of the advanced-stage Cabaçal VMS gold‐copper project, expanding the initial resource inventory at the Santa Helena area, regional-scale exploration of the Cabaçal VMS Belt, and exploration in the Jauru & Araputanga Greenstone Belts, all located in the State of Mato Grosso, Brazil. The DFS Technical Report will be filed on the Company's website and on SEDAR+ in accordance with NI 43-101.

Meridian Mining Plc — Meridian Announces Filing of DFS Technical Report

(LSE:MNO) Meridian Mining plc announced the filing of its Definitive Feasibility Study (DFS) Technical Report. The company stated that the DFS Technical Report has been prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects. The report was filed on SEDAR+ and is available for public access. Meridian Mining plc confirmed that the DFS Technical Report supports the results previously announced in its news release dated May 15, 2024. The company reiterated that the DFS Technical Report provides detailed information on the project’s mineral resources, reserves, mining methods, processing, infrastructure, capital and operating costs, and economic analysis. Meridian Mining plc emphasized that the DFS Technical Report was prepared by independent qualified persons as defined under NI 43-101. The company noted that the filing of the DFS Technical Report is a key milestone in the advancement of its project. Meridian Mining plc stated that the DFS Technical Report provides a comprehensive assessment of the technical and economic viability of the project. The company highlighted that the DFS Technical Report includes recommendations for the next steps in project development. Meridian Mining plc indicated that the DFS Technical Report is intended to provide investors and stakeholders with a thorough understanding of the project’s potential. The company encouraged interested parties to review the DFS Technical Report in its entirety for complete details. Meridian Mining plc concluded that it remains committed to advancing the project in accordance with the recommendations of the DFS Technical Report.

Meridian Mining Plc — Meridian reports Inclusion in FTSE 250 Index

(LSE:MNO) Meridian Mining plc announced that it is due to become a constituent of the FTSE 250 index as of October 1, 2026, according to FTSE Russell. The company highlighted that this inclusion follows the release of its definitive feasibility study, which confirmed the potential of its flagship Cabaçal project in Brazil. Gilbert Clark, CEO of Meridian Mining plc, stated that the company's long-term decision to join the London market was based on investor growth and index inclusion. He noted that the confirmation of this strategy has continued with the FTSE 250 inclusion and the quality of institutional and retail investors attracted to the register. Meridian Mining plc is focused on the development and exploration of the advanced-stage Cabaçal VMS gold-copper project. The company is also working to expand the initial resource inventory at the Santa Helena area through extension of Santa Helena Central and new discoveries. Meridian is conducting regional-scale exploration of the Cabaçal VMS Belt to expand the Cabaçal Hub strategy. The company is also exploring in the Jauru & Araputanga Greenstone Belts, all located in the State of Mato Grosso, Brazil. The announcement was made on behalf of the Board of Directors by Mr. Gilbert Clark, CEO and Director. The company is listed on the London Stock Exchange (LSE:MNO), Toronto Stock Exchange (TSX:MNO), Frankfurt Stock Exchange (FSE:N2E0), and OTCQX (MRRDF). The FTSE Russell announcement is titled 'Changes in FTSE UK Index Series.' The effective date for Meridian's inclusion in the FTSE 250 index is October 1, 2026. The company maintains its registered office at 8th Floor, 4 More London Riverside, London SE1 2AU, United Kingdom. Media enquiries are directed to Gareth Tredway and Saskia Sizen. The company encourages stakeholders to subscribe for news alerts and follow Meridian on X (formerly Twitter).

Meridian Reports Unaudited Half-Yearly Financial Results for the Six Months Ended 30 June 2026

(LSE: MNO) (TSX: MNO) (OTCQX: MRRDF) Meridian Mining plc announced its unaudited half-yearly financial results for the six months ended 30 June 2026, reporting cash and cash equivalents at period end of USD 95,975,354 and net assets of USD 102,125,445. The Company closed a bought deal offering through the issuance of 36,392,900 ordinary shares at a subscription price of CAD1.58 per ordinary share, for aggregate gross proceeds of CAD 57,500,782. Associated closing of share placements raised GBP 25M through the issuance of 27,173,912 new Ordinary Shares at an Issue Price of 92 pence. The Cabaçal Feasibility Study is nearing 50% completion and remains on schedule for Q4 2026 filing. The Cabaçal mine's Au-Cu-Ag open-pittable resource is reported as M&I: 70.1Mt @ 0.6g/t Au, 0.3% Cu, 1.3g/t Ag. Santa Helena Central's maiden open-pittable Au-Cu-Ag-Zn-Pb Mineral Resource is declared as M&I: 5.3Mt @ 0.6g/t Au, 0.4% Cu, 15.5g/t Ag, 1.9% Zn & 0.4% Pb. The Pre-feasibility Study technical report outlines a base case after-tax NPV5 of USD 984 million and 61.2% IRR from a pre-production capital cost of USD 248 million.

Meridian Drills Stacked VMS Layers at Santa Helena

(LSE: MNO) (TSX: MNO) (OTCQX: MRRDF) Meridian Mining plc drilled multiple stacked layers of Au-Cu-Ag & Zn-Pb VMS mineralisation below Santa Helena, including CD-878's upper layer with 11.3m @ 0.8g/t Au, 0.2% Cu, 17.6g/t Ag, 3.4% Zn & 0.6% Pb. CD-878's lower layer intercepted 1.7m @ 0.9% Cu, 0.1g/t Au, and 8.3g/t Ag, 13.6m below the main horizon. The main composite of CD-878 is located ~90m down-dip from CD-869, with the envelope of mineralisation widening from 7.2m to 11.3m and remaining open. The company has commenced the first reconnaissance programmes across the Jauru and Araputanga portfolio of highly prospective exploration licences. Meridian holds 66,552 ha in the Jauru and Araputanga Belts, and 51,826 ha in the Cabaçal Belt. The Pre-feasibility Study technical report dated March 31, 2025, outlines a base case after-tax NPV5 of USD 984 million and 61.2% IRR from a pre-production capital cost of USD 248 million. Cabaçal has a low All-in-Sustaining-Cost of USD 742 per ounce gold equivalent and a production profile of 141,000 ounces of gold equivalent life of mine.

Meridian Mining Plc — Smelter Tests Return High-Quality Blister Copper

(LSE: MNO) Meridian Mining plc announced that laboratory-scale smelting and converting tests of Cabaçal copper sulphide produced high-quality blister copper grading 98.9% Cu, 95.2 g/t Au, and 387.6 g/t Ag. The blister copper was produced from concentrate samples from the Cabaçal copper-gold-silver project in Mato Grosso, Brazil, and processed at Kingston Process Metallurgy in Ontario, Canada. The smelting tests demonstrated very low minor-element impurity levels, outperforming typical industry anode copper, and achieved high recoveries of copper, gold, and silver. The Pre-feasibility Study technical report dated March 31, 2025, outlines a base case after-tax NPV5 of USD 984 million and 61.2% IRR from a pre-production capital cost of USD 248 million, with capital repayment in 17 months. Cabaçal's Mineral Reserve estimate consists of Proven and Probable reserves of 41.7 million tonnes at 0.63g/t gold, 0.44% copper, and 1.64g/t silver. The company projects a low All-in-Sustaining-Cost of USD 742 per ounce gold equivalent and a production profile of 141,000 ounces of gold equivalent life of mine. Meridian continues to engage in off-take discussions with a range of potential counterparties and is advancing Cabaçal's DFS towards completion and project finance preparation.

Meridian Announces Notification of Transactions of Persons Discharging Managerial Responsibilities

(LSE: MNO) (TSX: MNO) (OTCQX: MRRDF) Meridian Mining plc granted conditional share awards under the Meridian Mining Omnibus Incentive Plan on 9 July 2026 to Directors and persons discharging managerial responsibilities. The awards included 166,481 RSUs and 332,963 PSUs to CEO Gilbert Clark, and 107,796 RSUs and 215,593 PSUs to CFO David Halkyard. Chairman Bruce McLeod received 66,592 DSUs, while Susanne Sesselmann, Douglas Ford, Neil Gregson, Carlos Vilhena, and Felipe Holzhacker Alves each received 33,296 DSUs. The price applied in calculating the number of shares was CAD1.70/GBP£0.92. RSUs were granted at 50% of salary for the CEO and 37.5% for the CFO, while PSUs were granted at 100% of salary for the CEO and 75% for the CFO. The company projects that RSUs and PSUs will normally vest on the third anniversary of grant, conditional upon continued employment and performance criteria, and DSUs will vest in twelve equal monthly instalments.

Meridian Announces Appointment Non-Exec Directors

(LSE: MNO) Meridian Mining plc announced the appointment of Dr. Carlos Vilhena and Mr. Felipe Holzhacker Alves as Independent Non-Executive Directors, effective immediately, following the results of the recent annual general and special meeting. Mr. Holzhacker Alves has over 20 years' experience in the mining industry and has served as CEO of Frontera Minerals since its incorporation, while Dr. Vilhena has over 35 years' experience as a mining lawyer in Brazil. Mr. Holzhacker Alves joins the Sustainability, Safety & Technical Committee and Dr. Vilhena joins the Corporate Governance & Nomination Committee, both effective immediately. Dr. Adrian McArthur, the Company's President, and Mr. John Skinner have stepped down from the Board, with McArthur continuing as President and Skinner moving to the Advisory Board. Both new directors are considered independent under the UK Corporate Governance Code and NI 52-110. The announcement was released in compliance with UKLR 6.4.6, with no further information required under UKLR 6.4.8. The company projects a transition from resource developer to future mine builder and developer.

Meridian Discovers 2nd VMS Layer at Santa Helena

(LSE: MNO) Meridian Mining plc announced the discovery of a second layer of gold-silver and zinc-lead VMS mineralisation at the Santa Helena expansion programme. Drill hole CD-869 returned 7.2m @ 1.4g/t Au, 0.1% Cu, 24.3g/t Ag, 2.3% Zn, 0.9% Pb from 177.6m, including 6.2m @ 1.6g/t Au, 0.1% Cu, 26.6g/t Ag, 2.6% Zn, 1.0% Pb from 178.1m. Additional results include CD-866: 15.4m @ 0.7g/t Au, 0.6% Cu, 29.1g/t Ag & 5.1% Zn from 31.3m, and CD-861: 12.0m @ 0.8g/t Au, 0.6% Cu, 36.7g/t Ag & 4.9% Zn from 29.7m. The Cabaçal Gold-Copper Project Pre-feasibility Study (PFS) outlines a base case after-tax NPV5 of USD 984 million and 61.2% IRR from a pre-production capital cost of USD 248 million, with capital repayment in 17 months. The Cabaçal Mineral Reserve estimate consists of Proven and Probable reserves of 41.7 million tonnes at 0.63g/t gold, 0.44% copper and 1.64g/t silver. The company reports a low All-in-Sustaining-Cost of USD 742 per ounce gold equivalent and a production profile of 141,000 ounces of gold equivalent life of mine. The company projects further resource growth and the future installation of a second hub along the Cabaçal Belt.

Meridian Announces FTSE Index Inclusion and Moves from SETSqx to SETS

(LSE: MNO) Meridian Mining plc announced that, due to its inclusion in the FTSE Index series, it will transition trading of the Company's shares on the Main Market of the London Stock Exchange's SETSqx to SETS, effective 05 June 2026, in preparation for the Company's inclusion in the FTSE Small Cap Index expected to take place from 22 June 2026. The Pre-feasibility Study technical report dated March 31, 2025, outlines a base case after-tax NPV5 of USD 984 million and 61.2% IRR from a pre-production capital cost of USD 248 million, with capital repayment in 17 months. The Cabaçal project has a low All-in-Sustaining-Cost of USD 742 per ounce gold equivalent and an annual production profile of 141,000 ounces of gold equivalent life of mine. The Cabaçal Mineral Reserve estimate consists of Proven and Probable reserves of 41.7 million tonnes at 0.63g/t gold, 0.44% copper and 1.64g/t silver (at a 0.25 g/t gold equivalent cut-off grade). The company is focused on gold-copper projects in Brazil, with the primary focus on the advanced stage Cabaçal gold-copper project located in the State of Mato Grosso, Brazil. The company projects inclusion in other indices alongside the advancement of the Cabaçal Project towards Final Investment Decision and on to first production.