THIS ANNOUNCEMENT IS MADE FOR INFORMATION PURPOSES ONLY AND DOES NOT CONSTITUTE AN OFFER TO SELL OR ISSUE OR SOLICITATION TO BUY, SUBSCRIBE FOR OR OTHERWISE ACQUIRE SHARES IN ATALAYA MINING PLC IN ANY JURISDICTION IN WHICH ANY SUCH OFFER OR SOLICITATION WOULD BE UNLAWFUL.

21 December 2023

Atalaya Mining Plc.

("Atalaya" or "the Company")

Update on Move to Main Market

Atalaya Mining Plc (AIM: ATYM) announces an update on its application to the Financial Conduct Authority ("FCA") to admit its ordinary shares ("Ordinary Shares") to the premium listing segment of the Official List and to trading on the London Stock Exchange plc's main market for listed securities (together, "Admission"), as announced on 13 November 2023.

The Company continues to progress the application process and Admission remains subject to a number of conditions including the approval by the FCA of a prospectus.

Admission will no longer occur before the end of December 2023 as originally anticipated and the Company now expects that Admission will not take place before the release of its 2023 annual financial results.

Accordingly, the Company's Ordinary Shares will continue to trade on AIM. Further updates on the application process together with the timeline for Admission will be made in due course.

Contacts:

About Atalaya Mining Plc

Atalaya is an AIM-listed mining and development group which produces copper concentrates and silver by-product at its wholly owned Proyecto Riotinto site in southwest Spain. Atalaya's current 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 that include Proyecto Masa Valverde and Proyecto Riotinto East. In addition, the Group has a phased earn-in agreement for up to 80% ownership of Proyecto Touro, a brownfield copper project in the northwest of Spain, as well as a 99.9% interest in Proyecto Ossa Morena. For further information, visit www.atalayamining.com

Important Notice

This announcement contains statements that are, or may be deemed to be, "forward-looking statements". These forward-looking statements can be identified by the use of words such as "will", "expect", "could", "believe", "intend", "should" and words of similar meaning. All statements other than statements of historical facts included in this announcement, including those regarding the Company's strategy, plans and objectives and the anticipated Admission are forward-looking statements. Readers are cautioned not to place undue reliance on such statements. Forward-looking statements involve a number of known and unknown risks, uncertainties and other factors, many of which are difficult to predict and generally beyond the control of Atalaya. These forward-looking statements speak only as of the date of this announcement. Atalaya expressly disclaims any obligation or undertaking to update or revise any forward-looking statement (except to the extent legally required).

Peel Hunt LLP ("Peel Hunt"), which is authorised and regulated in the United Kingdom by the FCA, is acting exclusively for the Company  as Sponsor and no one else in connection with Admission and it will not regard any other person as a client in relation to Admission and will not be responsible to anyone other than the Company  for providing the protections afforded to its clients or for providing advice in relation to Admission or any other transaction, matter, or arrangement referred to in this announcement.

This announcement has been issued by, and is the sole responsibility of, the Company. No representation or warranty, express or implied, is or will be made as to, or in relation to, and no responsibility or liability is or will be accepted by Peel Hunt or by any of its affiliates, partners, directors, officers, employees, advisers or agents as to or in relation to, the accuracy or completeness of this announcement or any other written or oral information made available to or publicly available to any interested party or its advisers, and any liability therefore is expressly disclaimed.