FEED and Feasibility Update at MCB Project site

HIGHLIGHTS

• Commencement of on-site MCB Project Front-End Engineering Design and updating of Feasibility Study
• Formal extension of share return period for SODOR

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Celsius Resources Limited ("Celsius" or "CLA") (ASX, AIM: CLA) is pleased to announce that its Philippine affiliate, Makilala Mining Company, Inc. ("MMCI" or the "Company"), has commenced on-site engineering activities this week for the Company's flagship Maalinao-Caigutan-Biyog Copper-Gold Project ("MCB" or the "Project").

This development follows the first drawdown of funds from the Maharlika Investment Corporation ("MIC") under the First Omnibus Loan and Security Agreement ("OLSA"), previously announced on 17 June 2025. This marks a significant milestone as we advance towards completing the Front-End Engineering Design ("FEED") and feasibility study update by around November this year.

Funding for the Company's operations will continue to be carefully managed with a view to extending working capital for the remainder of 2025 at least. The drawdowns from the funding arrangements with MIC for the FEED and updating of the Feasibility Study and associated work programs are currently being funded from the OLSA facility and cover all MCB Project costs. Some MMCI corporate costs will continue to be paid by Celsius including administration related expenses, Sagay project and Botilao project expenses with both of these projects on significantly reduced programs.

In regard to the binding deed that the Company's subsidiary Makilala Holding Limited ("MHL") entered into with Sodor, Inc. ("SODOR") on 17 March 2023[1], Celsius confirms that the share return period for SODOR has been formally extended, a process completed through the execution of an Undertaking and Indemnity Agreement. Celsius confirms that this extension provides an additional nine (9) months from the first OLSA signing date, which was on 16 May 2025, making it effective until 16 February 2026 (the "Extended Share Return Date"). The material terms of the arrangements with SODOR remain consistent with the conditions precedent announced on 24 February 2025.

The share issuances and SODOR's payable amounts satisfactorily facilitated the issue of the Company's Mining Licence[2] under applicable Philippine regulations and therefore the issue of the OLSA for the development works to be financed and commenced in shareholders' interest. The Company confirms that these arrangements will be reflected in the Company's financial accounts as of 30 June 2025 in accordance with applicable accounting standards.

Under these terms, the return of shares issued to SODOR upon the Extended Share Return Date is contingent upon either (i) SODOR's failure to pay MHL the aggregate price of the shares of MMCI; or (ii) PMR Holding Corp's ("PMR") failure to pay the subscription amount to Celsius' wholly owned subsidiary PDEP Inc. Calling for the return of shares is at the discretion of the Company.

Celsius continues to advance discussions with interested parties with a view to finalising potential equity funding partners for the full funding of the MCB Project mining operations as efficiently and quickly as possible. The Company will keep shareholders updated on these matters, whilst the focus remains on maintaining capital discipline, safeguarding CLA's financial position, and securing long-term value through a prudent and structured funding strategy.

Atty. Julito Sarmiento, CLA's Executive Chairman said:

"We are pleased to confirm that the MCB Project's developments are continuing at pace. We are grateful for the support of our shareholders and financial partners MIC and SODOR, as we look forward to collaboratively concluding equity financing for the MCB Project in the coming months. In the meantime, we are conscious of the need for careful cost management throughout the CLA Group in advance of the completion of the equity financing for the MCB Project."

MCB COPPER-GOLD PROJECT

An updated JORC compliant Mineral Resource Estimate was announced for the MCB Project on 12 December 2022, comprising 338 million tonnes @ 0.47% copper and 0.12 g/t gold, for a total of 1.6 million tonnes of contained copper and 1.3 million ounces of gold, of which 249 million tonnes @ 0.44% copper and 0.11 g/t gold is classified as Indicated, 42 million tonnes @ 0.52% copper and 0.11 g/t gold is classified as Inferred, and 47 million tonnes @ 0.59% copper and 0.19 g/t gold is classified as Measured.

Highlights from the Study include a Post tax NPV (8%) of US$464m and IRR of 31%, assuming a copper price of US$4.00/lb and gold price of US$1,695/oz, which are both currently significantly below prevailing market prices. Initial capital expenditure is estimated to be US$253m with a payback period of approximately 2.7 years. The designed mine production is matched to a 2.28Mtpa processing plant which will treat ore with an estimated average grade of 1.14% copper and 0.54g/t gold for the first 10 years of planned production with a C1[3] cash costs at just US$0.73/lb copper, net of gold credits.

Figure 1. Location of the MCB Project in the province of Kalinga, Northern Luzon, Philippines.

This announcement has been authorised by the Board of Directors of Celsius Resources Limited.

Listing Rule 5.23 Disclosure

The Company confirms that all material assumptions underpinning the production targets and forecast financial information derived from production targets in the Company's ASX announcement dated 1 December 2021 titled "Positive Scoping Study completed on MCB Copper-Gold Project confirms significant potential" continue to apply and have not materially changed.

The Mineral Resource estimate for the MCB Project was disclosed in the Company's ASX Announcement dated 12 December 2022 titled "Updated Mineral Resource for Celsius' MCB Copper-Gold Project". The Company confirms that it is not aware of any new information or data that materially affects the information included in the previous announcement and that all material assumptions underpinning the Mineral Resource estimate continue to apply and have not materially changed.

Celsius Resources Contact Information

Level 5, 191 St. Georges Terrace

Perth WA 6000

PO Box 7059

Cloisters Square PO

Perth WA 6850

P: +61 2 8072 1400

W: www.celsiusresources.com

Celsius Resources Limited

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including a responsibility to advise and guide the Company on its responsibilities under

the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to

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[1] ASX announcement 20 March 2023

[2] ASX announcement 18 March 2025