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HIGHLIGHTS:

• Cygnus has identified numerous drilling targets near the historic high-grade Cedar Bay mine, which produced 400Koz Au and 61Kt Cu at an average of 4% CuEq, ² within the Chibougamau Project
• Targets identified through ongoing review of historical data and drill logs using Cygnus’ innovative custom-built AI solution
• This highly successful approach has already delivered significant gold and copper results at Golden Eye, which will be included in the imminent resource update
• Cedar Bay closed in 1990 when the price of copper was just US$1,150/t (US$0.52/lb) and gold was US$380/oz, and is located less than 3km from Cygnus’ central processing plant
• Cygnus aims to significantly increase the remaining unmined high-grade resource at Cedar Bay, which currently stands at 130kt at 8.9% CuEq Indicated and 230kt at 8.5% CuEq Inferred ¹
• Mineralisation is open in numerous directions, with high-grade intersections outside of the current resource, including: ³
  • 3.4m @ 16.8% CuEq (4.8% Cu, 15.2g/t Au & 23.3g/t Ag) (CB-27-9)
  • 2.9m @ 9.6% CuEq (8.4% Cu, 1.0g/t Au & 43.0g/t Ag) (CB-27-6)
• At Corner Bay, final infill results have been received and will feed into next month’s resource update; These include:
  • 3.5m @ 4.9% CuEq (4.2% Cu, 0.5g/t Au & 27.3g/t Ag) (CB-25-123)
  • 1.8m @ 7.7% CuEq (6.3% Cu, 0.9g/t Au & 45.9g/t Ag) (CB-25-125)

Cygnus Metals Limited (ASX: CY5; TSXV: CYG; OTCQB: CYGGF) (‘Cygnus’ or the ‘Company’) is pleased to announce new promising targets next to an historic high-grade mine within its Chibougamau Copper-Gold Project in Quebec.

Cedar Bay sits within the Company’s northern Chibougamau copper-gold Camp, which boasts the vast majority of the historic production in the region, with a number of historic mines and a production record of nearly 1Mt of copper and 3.5Moz of gold. ²

The Cedar Bay mine, which closed in 1990, was historically one of the highest grade deposits in the camp producing 400Koz Au and 61Kt Cu at an average grade of 4.0% CuEq. ² Various factors contributed to its premature closure, including low metal prices and a shift in focus of the operating company at the time.

Importantly, a high-grade unmined resource remains at Cedar Bay comprised of 130kt at 8.9% CuEq Indicated and 230kt at 8.5% CuEq Inferred Resources. ¹ This resource is open in numerous directions, providing Cygnus with potential to significantly grow the resource through systematic exploration drilling. Drill intersections outside of the current resource include: ³

• 3.4m @ 16.8% CuEq (4.8% Cu, 15.2g/t Au & 23.3g/t Ag) (CB-27-9)
• 2.9m @ 9.6% CuEq (8.4% Cu, 1.0g/t Au & 43.0g/t Ag) (CB-27-6)

Cygnus is seeing tangible success through its historic data compilation strategy. This low-cost approach involves processing over 100,000 scanned documents, including drill logs, some of which have not been looked at in over 35 years and never before in modern 3D software. Success has already been demonstrated in recent drilling at Golden Eye, which is due to be included in the September quarter resource update, and is highlighting significant potential to expand the current resources at Cedar Bay.

Given the potential of the new targets, an additional drill rig will target both mineralisation along strike and down dip of the known lodes, utilising the recently compiled data and improved geological understanding of the deposit. This will be the first time this data has been compiled and utilised in targeting in over 35 years.

In addition, final results have been received from infill drilling at Corner Bay in time for the resource update due next month. Results include significant intersections of:

• 3.5m @ 4.9% CuEq (4.2% Cu, 0.5g/t Au & 27.3g/t Ag) (CB-25-123)
• 1.8m @ 7.7% CuEq (6.3% Cu, 0.9g/t Au & 45.9g/t Ag) (CB-25-125)

Cygnus is continuing its dual track strategy of resource growth and conversion with continued exploration drilling and an imminent resource update due later this quarter. In the background, the team continues to process historic data and generate additional drill targets surrounding the known high-grade copper-gold mineralisation. This is a low-risk approach which is playing a significant role in unlocking this historic district.

The Chibougamau area has well-established infrastructure giving the Project a significant head start as a copper-gold development opportunity. This infrastructure includes a 900,000tpa processing facility, local mining town, sealed highway, airport, regional rail infrastructure and 25kV hydro power to the processing site. Significantly, the Chibougamau processing facility is the only base metal processing facility within a 250km radius which includes a number of other advanced copper and gold projects.

Figure 1: Location of Cedar Bay within the Chibougamau North Camp which boasts a historic production record of nearly 1Mt of copper and 3.5Moz of gold. ²

Figure 2: Composite Long Section through the Chibougamau North Camp illustrating Cedar Bay with intersections of 3.4m @ 16.8% CuEq outside of current resources.
Refer to ASX releases dated 15 October 2024, 25 March 2025 and 8 May 2025 for previously announced drilling results.

About Cygnus Metals

Cygnus Metals Limited (ASX: CY5, TSXV: CYG, OTCQB: CYGGF) is a diversified critical minerals exploration and development company with projects in Quebec, Canada and Western Australia. The Company is dedicated to advancing its Chibougamau Copper-Gold Project in Quebec with an aggressive exploration program to drive resource growth and develop a hub-and-spoke operation model with its centralised processing facility. In addition, Cygnus has quality lithium assets with significant exploration upside in the world-class James Bay district in Quebec, and REE and base metal projects in Western Australia. The Cygnus team has a proven track record of turning exploration success into production enterprises and creating shareholder value.

Forward Looking Statements

This release may contain certain forward-looking statements and projections regarding estimates, 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 Cygnus’ control. Cygnus makes no representations and provides no warranties concerning the accuracy of the projections and disclaims any obligation to update or revise any forward-looking statements/projections based on new information, future events or otherwise except to the extent required by applicable laws. While the information contained in this release has been prepared in good faith, neither Cygnus or 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 release. 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 release or for any errors, omissions or misstatements or for any loss, howsoever arising, from the use of this release.

End Notes

1. The estimate of mineralisation at the Chibougamau Project is a foreign estimate prepared in accordance with CIM Standards. A competent person has not done sufficient work to classify the foreign estimate as a mineral resource in accordance with the JORC Code, and it is uncertain whether further evaluation and exploration will result in an estimate reportable under the JORC Code. Refer to Appendix B for a breakdown of the Foreign Mineral Resource Estimate.
2. Historic production statistics for the Chibougamau area are recorded in Leclerc. F, Harris. L. B, Bedard. J. H, Van Breeman. O and Goulet. N. 2012, Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada. Society of Economic Geologists, Inc. Economic Geology, v. 107, pp. 963–989.
3. Refer to Cygnus’ ASX announcement ‘Copper Merger and Equity Raise’ dated 15 October 2024.

Qualified Persons and Compliance Statements

The scientific and technical information in this announcement 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. The Exploration Results disclosed in this announcement are also based on and fairly represent information and supporting documentation compiled by Mr Beaupre. Mr Beaupre holds options in Cygnus. Mr Beaupre is a member of the Ordre des ingenieurs du Quebec (P. Eng.), a Registered Overseas Professional Organisation as defined in the ASX Listing Rules, and has sufficient experience which is relevant to the style of mineralisation and type of deposits under consideration and to the activity which has been undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Beaupre consents to the inclusion in this release of the matters based on the information in the form and context in which they appear.

The Company first announced the foreign estimate of mineralisation for the Chibougamau Project on 15 October 2024. The Company confirms that the supporting information included in the original announcement continues to apply and has not materially changed, notwithstanding the clarification announcement released by Cygnus on 28 January 2025 (‘Clarification’). Cygnus confirms that (notwithstanding the Clarification) it is not aware of any new information or data that materially affects the information included in the original announcement and that all material assumptions and technical parameters underpinning the estimates in the original announcement continue to apply and have not materially changed. Cygnus confirms that it is not in possession of any new information or data that materially impacts on the reliability of the estimates or Cygnus’ ability to verify the foreign estimates as mineral resources in accordance with the JORC Code. 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 announcement.

The information in this announcement that relates to previously reported Exploration Results at the Company’s projects has been previously released by Cygnus in ASX Announcements as noted in the text and End Notes. Cygnus is not aware of any new information or data that materially affects the information in these announcements. 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.

Individual grades for the metals included in the metal equivalents calculation for the foreign estimate are in Appendix B of this release. Metal equivalents for the foreign estimate of mineralisation have been calculated at a copper price of US$8,750/t, gold price of US$2,350/oz, with copper equivalents calculated based on the formula CuEq (%) = Cu(%) + (Au (g/t) x 0.77258). Individual grades for the metals included in the metal equivalents calculation for the exploration results are in Appendix A of this release. Metal equivalents for exploration results have been calculated at a copper price of US$8,750/t, gold price of US$2,350/oz and silver price of US$25/oz. Copper equivalents are calculated based on the formula CuEq(%) = Cu(%) + (Au(g/t) x 0.77258)+(Ag(g/t) x 0.00822). Gold equivalents are calculated based on the formula AuEq(g/t) = Au(g/t) +(Cu(%) x 1.29436)+(Ag(g/t) x 0.01064). Metallurgical recovery factors have been applied to the metal equivalents calculations, with copper metallurgical recovery assumed at 95% and precious metal (gold and silver) 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 metal equivalents calculations in respect of the foreign estimate and exploration results have a reasonable potential to be recovered and sold.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

APPENDIX A – Significant Intersections from Infill Drilling

Coordinates given in UTM NAD83 (Zone 18). Intercept lengths may not add up due to rounding to the appropriate reporting precision. Significant intersections reported above 1% CuEq over widths of greater than 1m. True width estimated to be 80% of downhole thickness.

APPENDIX B – Chibougamau Copper-Gold Project – Foreign Mineral Resource Estimate Disclosures as at 30 March 2022

APPENDIX C – 2012 JORC Table 1

Section 1 Sampling Techniques and Data

Section 2 Reporting of Exploration Results

(Criteria listed in the preceding section also apply to this section.)

Figure 3. Location of recent drilling at Corner Bay

^{1 The estimate of mineralisation at the Chibougamau Project is a foreign estimate prepared in accordance with CIM Standards and is not reported in accordance with the JORC Code. A competent person has not done sufficient work to classify the foreign estimate as a mineral resource in accordance with the JORC Code, and it is uncertain that following evaluation and/or further exploration work that the foreign estimate will be able to be reported as a mineral resource or ore reserve in accordance with the JORC Code.}

Photos accompanying this announcement are available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/fd3c6b3c-224d-4396-96cb-d237e38f0458
https://www.globenewswire.com/NewsRoom/AttachmentNg/98e31a33-d5d1-4b68-b615-7c645848b997
https://www.globenewswire.com/NewsRoom/AttachmentNg/30a17106-ee20-4c4a-a5d8-c1eb291e8dea

Nuvau Minerals Inc. (TSXV: NMC) has begun its minimum 1,500 m drill program aimed at testing continuity and extensions to the orogenic gold system discovered last month. The discovery was made with the first hole drilled of an inaugural gold-focused exploration program, in the footwall of the Bracemac-McLeod Mine approximately 200 m below surface. The follow-up program is being drilled immediately north east of this base metal mine, which was in production until mid 2022.

The Matagami Property is in the northern Abitibi Region of Quebec, one of the world’s most prolific gold endowed districts. This northern part of the Abitibi region includes Canada’s largest gold producing mine with the country’s largest gold mineral reserves: the Detour Lake Mine owned by Agnico Eagle Mines Limited. Hecla Mining Company’s Casa Berardi Mine, which has produced over 3 million ounces of gold, is located to the southwest of the Matagami Property (see Figure 1 below).

While the Abitibi’s first recorded gold discovery was 119 years ago in Rouyn-Noranda, the Matagami Property remains one of the largest areas in the region that has not been subject to a gold focused exploration program. Previous owners were concentrating on defining and developing multiple VMS deposits into multiple mines that produced extensive copper and zinc for more than 60 years. This was one of the primary opportunities Nuvau identified when it entered into the agreement to acquire the Property from Glencore. The Company recently began compiling gold related historic data, as well as launching several gold-focused initiatives (including till sampling) aimed at defining initial targets for drilling.

Figure 1: Matagami property location

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Nuvau’s current gold-focused exploration program has identified three initial priority targets:

1. Bracemac Footwall Discovery
2. Gold-in-Till Anomaly Target
3. Thunder Mine (1988) Target

The map below shows the location of these three targets (Figure 2). The vast majority of this 1,300 km² land pack remains open for gold exploration.

Figure 2: Current gold targets

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1. Bracemac Footwall Discovery

The recent discovery of gold mineralization in the footwall of the Bracemac Mine is located only 25 m from the access ramp of this permitted mine. The steeply dipping, strong shear zone structure with quartz veining mineralized with pyrite and locally visible gold was intersected at a depth of approximately 200 m. The visible gold was observed over approximately 0.5 m of core and assays are still pending on the discovery hole, BRCG-25-001.

Although located within the immediate footwall of the past-producing Bracemac-McLeod mine, the mineralized structure occurs in a late intrusive that truncated the mine host rock units (see Figure 3). The intrusive has seen very little drilling as the stratigraphy was not of interest for VMS exploration.

The follow up drill program is now underway to continue to step-out both up and down dip, and along strike, to test continuity of mineralization within the structural corridor as well as providing critical data on the dip and strike of the vein.

Figure 3: Past producing Bracemac-McLeod Mine and relative position of gold target drilled (left); schematic of the stratigraphy (right)

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Figure 4: Visible gold found in more than 30 gold chips identified in logging the core

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2. Gold-in-Till Anomaly Target

As part of Nuvau’s target generative exploration program, an overburden (till) drilling program was launched in 2023. This program resulted in the discovery of significant gold-in-till mineralization that was announced on March 4, 2025.

From the 2023 sonic drill program, hole PD-23-030s produced a notable gold grain anomaly detected at a depth of between 29.26 to 29.87 m in the overburden and featured more than 2,000 gold grains per 10 kg of material. In addition, a near-contiguous sample with 295 gold grains per 10 kg of material between 31.12 to 32.00 m was also encountered with the interval between consisting of a large locally derived boulder. Based on the almost pristine nature of the gold grains, and their close proximity to the bottom of the hole, the source is expected to be relatively close to this hole. (See images of gold grains below in Figure 5.)

To assist in defining targets in this area, a detailed drone MAG survey was completed. The limited rock outcrops were also mapped recently and together with the MAG data, a drill program is being designed for later this year. The objective of this drill program will be to gain a better understanding of the local geological structures and to test for the potential source of the extensive gold grains.

Figure 5: Mosaic of backscattered electron images of gold grain

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Notice the delicate textures and silicate attachments. LEFT: Image of 230 gold grains found in sample 155320186, hole PD-23-030s, RIGHT: Image of 112 gold grains found in adjacent sample 155320187.

3. Thunder Mine (1988) Target

The Thunder Mine property was acquired by Nuvau in 2023 for its potential for both base metal and gold mineralization. In 1988, Thunderwood Exploration Ltd. drilled a series of holes as follow-up to a 1959 hole that intersected copper mineralization (see Figure 6).

This follow-up program identified multiple gold-bearing structures; however, no subsequent follow-up work was completed. Highlight intercepts from the available public domain report include the following:

• DT-14-88: 209.00 – 209.80 m (0.80 m) @ 26.40 g/t Au.
• DT-10-88: 205.00 – 206.00 m (1.00 m) @ 78.16 g/t Au.
• DT-18-88: 100.80 – 107.30 m (6.50 m) @ 1.55 g/t Au, incl.: 0.30 m @ 4.89 g/t Au.
• DT-19-88: 226.00 – 231.00 m (5.0 m) @ 2.27 g/t Au, Incl.: 0.50 m @ 10.39 g/t Au.
• DT-20-88: 136.80 – 137.10 m (0.30 m) @ 10.37 g/t Au and 204.50 – 205.00 m (0.50 m) @ 6.48 g/t Au.
• DT-21-88: 310.50 – 319.90 m (9.40 m) @ 4.02 g/t Au, incl.: 0.70 m @ 42.03 g/t Au and 0.70 m @ 7.30 g/t Au.

These results been extracted from historical information, and are not compliant with NI 43-101. The original results are available via GESTIM, GM 48216, and GM 08790 at the following links:

Thunder mine drilling is planned as part of Nuvau’s winter drilling program in Q1 2026.

Figure 6: Thunder Mine Past drilling

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About Nuvau Minerals Inc.
Nuvau is a Canadian mining company focused on the Abitibi Region of mine-friendly Québec. Nuvau’s principal asset is the Matagami Property that is host to significant existing processing infrastructure and multiple mineral deposits and is being acquired from Glencore.

Qualified Person and Quality Assurance
Bastien Fresia P. Geo. (Qc), Technical Services Director of Nuvau and a ‘qualified person’ as is defined by National Instrument 43-101, has verified the scientific and technical data disclosed in this news release, and has otherwise reviewed and approved the scientific and technical information in this news release.

Drill core samples are sawn by staff technicians to create half core splits. One split is retained in the drill core box for archival purposes with a sample tag affixed at each sample interval and the other split is placed in a labelled plastic bag along with a corresponding sample number tag and placed in the shipment queue.

Quality control samples including blind certified reference material (‘CRM’), blank material, and core duplicates are inserted at a frequency of 1 in every 20 samples and sample batches of up to 60 samples were then shipped directly by Nuvau personnel to the ALS Canada Ltd. preparation laboratory in Rouyn-Noranda, Québec.

All submitted core samples are crushed in full to 95 % passing less than 2 mm (ALS code CRU-32). A 1000-gram sample was then riffled split from the crushed material and pulverized to 90 % passing 75 μm (SPL-22 and PUL-32a). Pulps are shipped from the preparation laboratory to ALS Canada Ltd.’s analytical lab in North Vancouver, British Columbia, for assay.

Lead, silver, copper and zinc analyses were determined by ore grade four acid digestion with an inductively coupled plasma atomic emission spectroscopy (‘ICP-AES’) or atomic absorption spectroscopy (‘AAS’) finish (ALS codes Pb-OG62, Ag-OG62, Cu-OG62 and ZnOG62), whereas gold was determined by 50 g fire assay analysis with an AAS finish (code Au-AA23).

ALS Canada Ltd. is an accredited, independent commercial analytical firm registered to ISO/IEC 17025:2017 and ISO 9001:2015.

Cautionary Statements
This news release contains forward-looking statements and forward-looking information (collectively, ‘forward-looking statements’) within the meaning of applicable securities laws. Any statements that are contained in this news release that are not statements of historical fact may be deemed to be forward-looking statements. Forward-looking statements are often identified by terms such as ‘may’, ‘should’, ‘anticipate’, ‘will’, ‘estimates’, ‘believes’, ‘intends’ ‘expects’ and similar expressions which are intended to identify forward-looking statements. More particularly and without limitation, this news release contains forward-looking statements concerning drill results relating to the Matagami Property, the results of the PEA, the potential of the Matagami Property, the timing and commencement of any production, the restart of the Bracemac-McLeod Mine, the completion of the earn-in of the Matagami Property and the timing and completion of any technical studies, feasibility studies or economic analyses. Forward-looking statements are inherently uncertain, and the actual performance may be affected by a number of material factors, assumptions and expectations, many of which are beyond the control of the Company, including expectations and assumptions concerning the Company and the Matagami Property. Readers are cautioned that assumptions used in the preparation of any forward-looking statements may prove to be incorrect. Events or circumstances may cause actual results to differ materially from those predicted as a result of numerous known and unknown risks, uncertainties, and other factors, many of which are beyond the control of the Company. Readers are further cautioned not to place undue reliance on any forward-looking statements, as such information, although considered reasonable by the management of the Company at the time of preparation, may prove to be incorrect and actual results may differ materially from those anticipated.

The forward-looking statements contained in this news release are made as of the date of this news release, and are expressly qualified by the foregoing cautionary statement. Except as expressly required by securities law, neither the Company nor Nuvau undertakes any obligation to update publicly or to revise any of the included forward-looking statements, whether as a result of new information, future events or otherwise.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.

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