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High-Grade Chibougamau Copper-Gold Project Updated Mineral Resource Estimate ASX: CY5 TSXV: CYG OTCQB: CYGGF October 2025
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Cautionary Statements FORWARD-LOOKING STATEMENTS This presentation may contain certain forward-looking statements and projections regarding estimated resources and reserves; planned production and operating costs profiles; planned capital requirements; and planned strategies and corporate objectives. Such forward-looking statements/projections are estimates for discussion purposes only and should not be relied upon. They are not guarantees of future performance and involve known and unknown risks, uncertainties and other factors many of which are beyond the control of Cygnus. The forward-looking statements/projections are inherently uncertain and may therefore differ materially from results ultimately achieved. Cygnus does not make any representations and provides no warranties concerning the accuracy of the projections and disclaims any obligation to update or revise any forward-looking statements/projects based on new information, future events or otherwise except to the extent required by applicable laws. While the information contained in this presentation has been prepared in good faith, neither Cygnus nor any of its directors, officers, agents, employees or advisors give any representation or warranty, express or implied, as to the fairness, accuracy, completeness or correctness of the information, opinions and conclusions contained in this presentation. Accordingly, to the maximum extent permitted by law, none of Cygnus, its directors, employees or agents, advisers, nor any other person accepts any liability whether direct or indirect, express or limited, contractual, tortuous, statutory or otherwise, in respect of, the accuracy or completeness of the information or for any of the opinions contained in this presentation or for any errors, omissions or misstatements or for any loss, howsoever arising, from the use of this presentation. NOT AN OFFER This presentation is for information purposes only. The presentation does not comprise a prospectus, product disclosure statement or other offering document under Australian law (and will not be lodged with ASIC) or any other law. This presentation also does not constitute or form part of any invitation, offer for sale or subscription or any solicitation for any offer to buy or subscribe for any Securities nor shall they or any part of them form the basis of or be relied upon in connection therewith or act as any inducement to enter into any contract or commitment with respect to Securities. COMPLIANCE STATEMENTS The information in this presentation that relates to the Mineral Resource Estimate for the Chibougamau Project reported in accordance with the JORC Code 2012 and NI 43-101 was released by Cygnus Metals in an announcement titled ‘Major Resource Update’ released to the ASX on 17 September 2025. Details of the Mineral Resource Estimate and metal equivalents are included at Appendix A. The information in this presentation that relates to previously reported Inferred Mineral Resource Estimate of 10.1Mt at 1.04% Li2O at Pontax Central reported in accordance with JORC Code 2012 was previously released by Cygnus Metals in an announcement titled ‘Maiden Resource at Pontax Project’ released to the ASX on 14 August 2023. The Pontax Central project hosts Inferred Mineral Resources of 8.27Mt at 1.02% Li2O reported in accordance with NI 43-101 as noted in the ASX announcement dated 22 November 2024. The information in this presentation that relates to previously reported Exploration Results at the Company’s projects have been previously released by Cygnus Metals in ASX Announcements as noted in the footnotes. Metal equivalents for exploration results have been calculated at a copper price of US$8,750/t, gold price of US$2,350/oz, copper equivalents calculated based on the formula CuEq (%) = Cu(%) + (Au (g/t) x 0.77258). Metallurgical recovery factors have been applied to the copper equivalents calculations, with copper metallurgical recovery assumed at 95% and gold metallurgical recovery assumed at 85% based upon historical production at the Chibougamau Processing Facility, and the metallurgical results contained in Cygnus’ announcement dated 28 January 2025. It is the Company’s view that all elements in the copper equivalent calculations have a reasonable potential to be recovered and sold. Cygnus Metals is not aware of any new information or data that materially affects the information in the said announcements, and in the case of estimates of Mineral Resources, that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Persons’ findings are presented have not been materially modified from the original market announcements. The scientific and technical information in this presentation has been reviewed and approved by Mr Louis Beaupre, the Quebec Exploration Manager of Cygnus, a “qualified person” as defined in National Instrument 43-101 – Standards of Disclosure for Mineral Projects. This presentation contains summary information about Cygnus Metals Limited (“Cygnus”, “Cygnus Metals” or the “Company”). The information in this presentation is of general background and does not purport to be complete. This presentation has been approved for release by the Executive Chairman. 2