Atalaya Mining Regulatory News (ATYM)

30 December 2025

Atalaya Mining Copper, S.A.

("Atalaya" or "the Company")

Directorate Change

Atalaya Mining (LSE: ATYM) is pleased to announce that its board of directors (the "Board") intends to appoint Dr Michael ('Mike') Graham Armitage as an independent non-executive director with effect from 19 January 2026. Mike will replace Steve Scott who will be stepping down on 31 December 2025.

Mike will join the Board's Physical Risk and Audit Committees.

Mike will stand for election at the Company's Annual General Meeting in 2026.

Mike has four decades of experience in the mining industry. After spending his early career working underground as a geologist in South Africa, in 1991 Mike joined SRK Consulting where he held varied roles. In addition to his technical work at SRK, producing resource estimates and managing feasibility and due diligence studies, his roles have included Managing Director and Chairman of SRK's UK practice and Chairman of SRK's Russia and Kazakhstan practices as well as SRK Exploration. He also spent six years as Chairman of SRK Global. Mike is also managing director of the Welsh gold exploration company, Sarn Helen Gold Ltd.

Mike completed his PhD assessing alternative methods of reserve estimation at the Renco Mine in Zimbabwe and has written several papers on resource and reserve estimation methodology and reporting. He spent several years as joint course co-ordinator of a MSc in Mineral Resources at Cardiff University and then as external examiner for the MSc in Metals and Energy Finance at Imperial College, University of London. He has also been a council member and Vice President of the Geological Society.

As a consequence of these Board changes, the structure of the Board's committees with effect from 19 January 2026 will be as follows:

· Audit Committee - Carole Whittall (Chair), Mike Armitage, Hennie Faul

· Remuneration Committee - Coriseo González-Izquierdo (Chair), Hennie Faul, Neil Gregson, Kate Harcourt

· Nominations & Governance Committee - Neil Gregson (Chair), Coriseo González-Izquierdo, Kate Harcourt

· Physical Risk Committee - Hennie Faul (Chair), Mike Armitage, Neil Gregson

· Sustainability Committee - Kate Harcourt (Chair), Coriseo González-Izquierdo, Carole Whittall

Additional Information

Mike has been an independent non-executive director of AIM-quoted Central Asia Metals Plc since January 2022 and of AIM-quoted Tertiary Minerals plc since January 2021.

There are no further disclosures to be made for the purposes of paragraph 6.4.8R of the Financial Conduct Authority's Listing Rules.

Neil Gregson, Chair of Atalaya, commented:

"I am delighted that we will be welcoming Mike to the Atalaya Board. He brings exceptional expertise in mineral resource and reserve estimation, underpinned by four decades of mining industry experience. His depth of knowledge will be a significant asset to the Board as the Company advances its projects.

On behalf of the Board, I would like to thank Steve Scott for his dedicated service on the Atalaya Board and its committees since September 2015. In particular, we are grateful for his excellent leadership as Chair of the Board's Physical Risk Committee where his insight and judgement have made a lasting contribution to the Company's governance and risk oversight."

Contacts:

About Atalaya Mining Copper, S.A.

Atalaya is a European copper producer that owns and operates the Proyecto Riotinto complex in southwest Spain. Atalaya's shares trade on the London Stock Exchange's Main Market under the symbol "ATYM" and Atalaya is a FTSE 250 Index constituent.

Atalaya's operations include the Cerro Colorado open pit mine and a modern 15 Mtpa processing plant, which has the potential to become a central processing hub for ore sourced from its wholly owned regional projects around Riotinto, such as Proyecto Masa Valverde and Proyecto Riotinto East. In addition, Atalaya has a phased earn-in agreement for up to 80% ownership of Cobre San Rafael S.L., which fully owns the Proyecto Touro brownfield copper project in the northwest of Spain, as well as a 99.9% interest in Proyecto Ossa Morena. For further information, please visit www.atalayamining.com