Notice of Annual General & Special Meeting

LONDON, United Kingdom, June 2 2026 / Newsfile / Meridian Mining plc (LSE:MNO) (TSX: MNO), (OTCQX: MRRDF) (Frankfurt/Tradegate: N2E0) ("Meridian" or the "Company") is pleased to announce that the 2026 annual general and special meeting (the "Meeting") of Meridian Mining plc will be held at 4 More London Riverside, London SE1 2AU, United Kingdom on Monday 29 June at 4.00 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 at https://data.fca.org.uk/#/nsm/nationalstoragemechanism for inspection via 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 https://www.sedarplus.ca/ and is available to view on the Company's website here.

As part of the Meeting's agenda, the slate of proposed Directors will be presented. Non-Executive Directors: Mr. Bruce McLeod (Chair), Mr. Doug Ford, Mrs. Susanne Sesselmann and Mr. Neil Gregson are standing for re-election as is Meridian's Executive Director and Chief Executive Officer Mr. Gilbert Clark. Non-Executive Director Mr. John Skinner and Executive Director Dr. Adrian McArthur will not be standing for re-election. Mr. John 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, Mr. Carlos Vilhena and Mr. Felipe Holzhacker Alves, are being proposed to join Meridian's Board of Directors, on the recommendation of the Corporate Governance and Nomination Committee, and unanimous endorsement of the Board. This recommendation followed a structured and rigorous selection process in accordance with the Company's corporate governance practices.

• Vilhena is a distinguished mining lawyer with over 35 years' experience advising on complex legal and strategic matters across the mineral resources sector in Brazil. Mr. Holzhacker Alves, based in São 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 last 20 years.
• Bruce McLeod, Meridian's Chair, comments: "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 Cabaçal 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 Cabaçal 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.

On behalf of the Board of Directors of Meridian Mining plc

Gilbert Clark - CEO and Director

Meridian Mining plc

8th Floor, 4 More London Riverside

London SE1 2AU

United Kingdom

Ph: +44 (0) 203 930 3145 (GMT)