Mr. Gilbert Clark reports

MERIDIAN MINING ANNOUNCES NOTICE OF ANNUAL GENERAL AND SPECIAL MEETING AND BOARD CHANGES/NOMINATIONS

Meridian Mining PLC's 2026 annual general and special meeting will be held at 4 More London Riverside, London, SE1 2AU, United Kingdom, on Monday, June 29, at 4 p.m. London time.

A copy of the notice of meeting, included in the management information circular, and form of proxy have been posted or otherwise made available to shareholders. Furthermore, in compliance with UKLR 14.3.6R, these documents have been submitted to the Financial Conduct Authority and will shortly be available for inspection through the national storage mechanism.

In addition, the notice of the meeting included in the management information circular will shortly be filed under the company's profile at SEDAR+ and is available to view on the company's website.

As part of the meeting's agenda, the slate of proposed directors will be presented. Non-executive directors: Bruce McLeod (chair), Doug Ford, Susanne Sesselmann and Neil Gregson are standing for re-election as is Meridian's executive director and chief executive officer Gilbert Clark. Non-executive director John Skinner and executive director Dr. Adrian McArthur will not be standing for re-election. Mr. Skinner will transition to the company's advisory board. Dr. McArthur will continue in his executive role as Meridian's president.

Two new Brazilian non-executive director nominees, Carlos Vilhena and Felipe Holzhacker Alves, are being proposed to join Meridian's board of directors, on the recommendation of the corporate governance and nomination committee and the unanimous endorsement of the board. This recommendation followed a structured and rigorous selection process in accordance with the company's corporate governance practices.

Mr. Vilhena is a distinguished mining lawyer with over 35 years experience advising on complex legal and strategic matters across the mineral resource sector in Brazil. Mr. Holzhacker Alves, based in Sao Paulo, Brazil, is the founder and president of Frontera Minerals, a Brazilian-focused mining and fertilizer group. Originally a mining engineer, Mr. Holzhacker Alves then transitioned to business and finance, structuring and executing equity and debt deals for mining companies throughout Latin and North America over the past 20 years.

Mr. McLeod, Meridian's chair, commented: "I would like to express my sincere thanks to John and Adrian for their significant contributions to the company and the board. Since joining Meridian's board, under their guidance, the company has moved ahead with securing the leading Cabacal project and progressing it from exploration to near-term development. Our journey together continues as John has accepted a seat on the company's advisory board, and Adrian will continue to focus on his current executive role as president of Meridian.

"The board and the company's management strongly support the candidature of Carlos and Felipe to be elected as non-executive directors. Both are Brazilian citizens and have decades of experience within the Brazilian mining industry.

"With the completion of the London listing, I see the year ahead to be as transformational with Meridian gearing up for the construction phase of its compelling Cabacal copper-gold project."

The company's meeting will be held as an in-person meeting. Further information, including how to vote or appoint a proxy in respect of the meeting, is set out in the notice.

About Meridian Mining PLC

Meridian Mining is focused on:

• The development and exploration of the advanced-stage Cabacal volcanogenic massive sulphide gold and copper project;
• Expanding the initial resource inventory in the Santa Helena area through extension of Santa Helena Central and new discoveries;
• Regional-scale exploration of the Cabacal VMS belt to expand the Cabacal hub strategy; and
• Exploration in the Jauru and Araputanga greenstone belts (the above all located in the state of Mato Grosso, Brazil).

The prefeasibility study technical report dated March 31, 2025, entitled: "Cabacal Gold-Copper Project NI 43-101 Technical Report and Pre-feasibility Study" outlines a base-case after-tax net present value discounted at 5 per cent of $984-million (U.S.) and a 61.2-per-cent internal rate of return from a preproduction capital cost of $248-million (U.S.), leading to capital repayment in 17 months (assuming a metal price scenario of $2,119 (U.S.) per ounce of gold, $4.16 (U.S.) per pound of copper and $26.89 (U.S.) per ounce of silver). Cabacal has a low all-in-sustaining cost of $742 (U.S.) per ounce gold equivalent and an annual production profile of 141,000 ounces of gold equivalent life of mine, driven by high metallurgical recovery, a low life-of-mine strip ratio of 2.3 to 1 and the low operating cost environment of Brazil.

The Cabacal mineral reserve estimate consists of proven and probable reserves of 41.7 million tonnes at 0.63 gram per tonne gold, 0.44 per cent copper and 1.64 g/t silver (at a 0.25 g/t gold equivalent cut-off grade).

Readers are encouraged to read the PFS technical report in its entirety. The PFS technical report may be found under the company's profile on SEDAR+ and on the company's website.

The PFS technical report was prepared for the company by Tommaso Roberto Raponi (PEng), principal metallurgist with Ausenco Engineering Canada ULC; Scott Elfen (PE), global lead geotechnical and civil services with Ausenco Engineering Canada ULC; John Anthony McCartney, CGeol, Ausenco Chile Ltda.; Porfirio Cabaleiro Rodriguez (engineer geologist, FAIG), of GE21 Consultoria Mineral; Leonardo Soares (BSc geo, MAIG), senior geological consultant of GE21 Consultoria Mineral; Norman Lotter (mineral processing engineer, PEng), of Flowsheets Metallurgical Consulting Inc.; and Juliano Felix de Lima (engineer geologist, MAIG), of GE21 Consultoria Mineral.

We seek Safe Harbor.