Q1 2025 Operations Update

Atalaya Mining (LSE: ATYM) is pleased to announce its operations update for the first quarter of 2025 ("Q1 2025" or the "Period").

Proyecto Riotinto Operating Highlights

• Represents the Cerro Colorado pit only.

Alberto Lavandeira, CEO, commented:

"We are pleased to begin 2025 with a strong quarter of production, which represents our best quarter in over three years. Production was 34% higher than the comparative period last year and 18% above the prior quarter thanks to higher grades and good plant performance.

We continue to be excited about the fiscal year ahead. Our operations are performing well, physical copper market strength persists and we are optimistic on several pending catalysts across our asset portfolio.

Thanks to a strong balance sheet and our project development and operating capabilities, we are well-positioned to execute on our near-term growth strategy, including in the Riotinto District and at Proyecto Touro, where we are advancing plant engineering work. Touro is an attractive project that could deliver substantial new investment to Galicia while also contributing to European Union objectives in relation to boosting domestic supply of strategic raw materials like copper."

Q1 2025 Operating Results

Mining

Waste mined was 11.3 million tonnes in Q1 2025 (Q1 2024: 5.5 million tonnes), compared with 10.2 million tonnes in Q4 2024. In addition, waste stripping activities continued at the San Dionisio area.

Recent periods of significant rainfall have impacted access to certain areas at the bottom of the Cerro Colorado pit, but overall mining rates remain consistent with budget.

Processing

The plant processed ore of 4.2 million tonnes in Q1 2025 (Q1 2024: 3.7 million tonnes), compared with 3.8 million tonnes in Q4 2024, which represents strong performance due to minimal downtime. In Q2 2025, the Company expects to complete a SAG mill liner change which will result in lower quarterly throughput.

Copper grade was 0.42% in Q1 2025 (Q1 2024: 0.34%), compared with 0.41% in Q4 2024.

Copper recovery was 80.98% in Q1 2025 (Q1 2024: 84.74%), compared with 78.15% in Q4 2024, which is consistent with 2025 guidance.

Production

Copper production was 14,291 tonnes in Q1 2025 (Q1 2024: 10,666 tonnes), compared with 12,078 tonnes in Q4 2024, as a result of strong throughput and higher copper grade.

On-site copper concentrate inventories were 19,031 tonnes at 31 March 2025 (31 December 2024: 21,815 tonnes). Nearly all of the concentrate inventories as at 31 December 2024 were sold during Q1 2025 and the Company expects to reduce the current concentrate inventory balance to normalised levels during Q2 2025.

Copper contained in concentrates sold was 14,687 tonnes in Q1 2025 (Q1 2024: 10,286 tonnes).

Select Financial Highlights

Realised Copper Price

The average realised copper price (excluding QPs closed during the Period) was $4.26/lb in Q1 2025 (Q1 2024: $3.89/lb), compared with $4.10/lb in Q4 2024. The average spot copper price was $4.24/lb in Q1 2025.

Provisional Revenue Adjustments

For Q1 2025, settlement adjustments (for QPs closed during the Period) and fair value adjustments (for open QPs based on copper forward curve prices as at 31 March 2025) were positive €1.5 million.

Balance Sheet

The Company's balance sheet remains strong with consolidated cash and cash equivalents of €69.7 million as at 31 March 2025 (31 December 2024: €52.9 million).

Current and non-current borrowings were €31.5 million, resulting in a net cash position of €38.2 million as at 31 March 2025 (31 December 2024: €35.1 million).

Subsequent to Period end, a payment for a shipment made on 31 March 2025 was received on 4 April 2025, increasing the Company's net cash position to €49.4 million.

Outlook for 2025

Full year 2025 guidance is unchanged from the outlook announced as part of the Company's 2024 Annual Results. This includes copper production of 48,000 - 52,000 tonnes (weighted slightly towards H1 2025) and Cash Cost and AISC of $2.70 - 2.90/lb and $3.20 - 3.40/lb copper payable, respectively.

Asset Portfolio Update

Proyecto Riotinto

Waste stripping activities continued at San Dionisio in order to prepare the area for future mining phases, with total material mined of 1.4 million tonnes in Q1 2025. The permitting process associated with the San Dionisio final pit is in its final stages.

Construction progress continued in relation to the planned relocation of the A-461 road that currently runs between Cerro Colorado and San Dionisio.

At San Antonio, the polymetallic deposit located immediately east of the Cerro Colorado pit, an infill and step-out drilling program is expected to begin in the coming months.

E-LIX Phase I Plant

Commissioning and ramp-up activities continued at the E-LIX Phase I plant. During Q1 2025, further progress was made in relation to optimising and debottlenecking the circuits to increase capacity, with the novel leaching section continuing to perform well. Focus remains on leaching the zinc contained within Atalaya's copper concentrates due to the low copper treatment charge environment.

Riotinto District - Proyecto Masa Valverde ("PMV")

At present, four rigs are infill drilling the veining stockwork and massive sulphide type mineralisation at the Masa Valverde deposit.

The Company expects to start preparatory works related to the access ramp in the coming months once it has completed the purchase of certain surface rights.

Proyecto Touro

The XdG is continuing its review according to the simplified procedures afforded to projects with PIE status. The public information period, which serves to inform the surrounding communities and organisations about the proposed project, concluded on 31 January 2025. Cobre San Rafael continues to analyse and respond to the feedback submitted during the public information period. Likewise, numerous sectoral reports issued by the various departments of the XdG have already been collected, duly assessed, and where necessary, the corresponding clarifications have been prepared.

Plant engineering is ongoing including the definition of final flowsheets and detailed process layout, in order to shorten the timeline to construction start once permits are obtained. Finally, infill and step-out drilling programmes continue, with a focus on areas captured in the initial mine plan and where mineralisation remains open.

Proyecto Ossa Morena

Proyecto Riotinto East

Gravimetric ground surveys are being carried out over selected areas to better define future drill targets on the East belt extension.

Skellefte Belt and Rockliden (Sweden)

The winter drilling programmes commenced in January 2025 and ended on 18 March 2025, completing 2,445 metres (9 diamond drill holes) at the Skellefte Belt Project and 2,781 metres (16 diamond drill holes) at the Rockliden Project. The drilling season was shorter than expected due to unusually warm weather creating poor ground conditions, but significant progress was made in terms of extending mineralisation at the Bjurtraskgruvan (Skellefte Belt) and "Target 1" (Rockliden) prospects, as well as initial testing of several regional targets. Assays from the drill samples are expected by the end of Q2 2025 and geological interpretation is progressing.

In addition, various geophysical surveys commenced in Q1 2025 and will continue during Q2 2025 at both projects. Results will be processed and interpreted in order to refine the drill targets for the next drilling season.

Corporate Activities Update

Re-domiciliation

On 10 January 2025, the Company announced the completion of its re-domiciliation from the Republic of Cyprus to the Kingdom of Spain. As a result, trading in Atalaya's shares under the new registered name of Atalaya Mining Copper, S.A. became effective on the same date.

The re-domiciliation to Spain, along with Atalaya's move to the Main Market in April 2024, opened the possibility for Atalaya to be included in the FTSE UK Index Series.

Indexation

Atalaya's shares were added to the FTSE All-Share and FTSE SmallCap indices effective 24 March 2025, as a result of FTSE Russell's March 2025 Quarterly Review for the FTSE UK Index Series. This milestone is expected to enhance the Company's visibility to institutional investors.

About Atalaya Mining Copper, S.A.

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