Anglesey Reports on a Transformative 2026 Fiscal Year

17 September 2026

Anglesey Mining plc

(“Anglesey” or the “Company”)

Anglesey Reports on a Transformative 2026 Fiscal Year

Anglesey Mining plc (AIM: AYM), the UK-based mineral exploration and development company focused on advancing its 100%-owned Parys Mountain Project on the Isle of Anglesey, North Wales, is pleased to announce its audited results for the year ended 31 March 2026 and the date of its forthcoming Annual General Meeting (“AGM”).

The Annual Report and Accounts, which include the Notice of Annual General Meeting ("AGM"), will be made available on the Company's website.

The AGM will be held at the offices of Arch Law Limited, Huckletree Floor 2, 8 Bishopsgate, London EC2N 4BQ at 11.00 a.m. on Wednesday 21 October 2026.

Key Highlights from the Financial Year:

• 100% focus on the Company’s sole asset, the Parys Mountain polymetallic project.
• 100% elimination of the Company’s debt.
• The Company is 100% restructured and recapitalised.
• Successful initial fundraising in March 2026 to initiate a planned and systematic work programme.
• New Board of Directors and Management Team, with proven track records within the exploration, mining and metallurgical sectors.

Chairman's Statement

The year ended 31 March 2026 marked a significant period of change for Anglesey.

Following the restructuring completed during the year, Anglesey's sole focus is now the advancement of the 100%-owned Parys Mountain Project. The project represents the United Kingdom's largest and most advanced undeveloped polymetallic mineral resource, containing copper, zinc, lead, silver and gold within a volcanogenic massive sulphide ("VMS") system.

The strategic importance of these metals continues to grow, as in recent times, successive UK Government initiatives have highlighted the importance of strengthening domestic capability in the supply of critical and strategically important minerals. Against this backdrop, Parys Mountain represents a rare opportunity to advance a substantial UK mineral project with an established resource base, long-standing planning permissions associated with historic mine development and significant potential for future expansion.

During the year, the Company completed a significant restructuring of its balance sheet. Approximately £3.6 million of principal debt was eliminated, and the Company's interests in the Grängesberg iron ore project in Sweden and Labrador Iron Mines Holdings Limited were disposed of, simplifying the corporate structure and enabling the Company to concentrate its resources on the Parys Mountain asset.

Following approval by shareholders in February 2026, the Company's share capital was reorganised, restoring greater flexibility to access equity capital. On 9 March 2026, a placing and subscription raised gross proceeds of £679,500.

Following the year-end, the Board was substantially restructured as Jim Williams was appointed as Executive Chairman, Andrew Fulton became the new Chief Executive Officer and both Martin Wood and Taj Singh joined as independent Non-Executive Directors.

The financial year ending March 2026 was therefore a year in which Anglesey simplified its corporate structure and reset the business. From April 2026 onwards, the Company has been focused on systematically advancing Parys Mountain through modern technical work, disciplined governance and focused investment.

Operational Strategic Report

The year ended 31 March 2026 was transformational for Anglesey Mining. Through the completion of the balance sheet restructuring and disposal of its non-core overseas interests, the Company's strategic focus moved solely to advancing Parys Mountain.

Following the year-end, Anglesey strengthened its technical capability through the appointment of a Principal Geologist and an Exploration Geologist, both of whom are now actively engaged on site.

The initial focus for the geologists is to consolidate and enhance the geological and technical understanding of Parys Mountain by integrating historical drilling, underground records, assay data and recent geophysical surveys into an integrated geological and technical model.

This work supports the Company's three strategic pathways:

• Develop the Mine: progressing mine planning, engineering studies, metallurgy and mining optimisation, supported by an increasingly integrated geological and technical understanding of the project.
• Grow the Resource: increasing geological confidence, supporting future Mineral Resource Estimate updates and evaluating opportunities to extend known mineralisation.
• Discover the District: identifying and prioritising new exploration opportunities across the wider Parys Mountain mineral system through the integration of historical information, geospatial analysis and modern geophysical techniques.

Together, these activities are intended to progressively reduce technical uncertainty, increase project confidence and support the long-term development of Parys Mountain.

Planning and Permitting

The Company continues to progress the planning and environmental permitting required to support the future development of Parys Mountain.

The December 2024 Scoping Opinion from the Isle of Anglesey County Council established a framework for preparation of the Environmental Statement. The Company's planning and environmental consultants continue to coordinate this programme, including the required technical studies, stakeholder engagement and liaison with relevant regulatory authorities.

The objective is to secure a modern planning consent reflecting the proposed mine design and current environmental and regulatory standards. Once secured, it is intended that the new consent will supersede the historic planning permissions that have supported the project to date.

Planning and permitting remain a key strategic priority and are progressing alongside the technical and engineering workstreams supporting the future development of Parys Mountain.

Financial Results and Position

As the Group remains in the exploration and development stage, it does not currently generate operating revenues.

The Group reported a profit after tax for the year ended 31 March 2026 of £2.08 million, compared with a loss of £0.66 million in the previous year. The result principally reflects a £2.92 million gain arising from the balance sheet restructuring completed during the year.

Total comprehensive income for the year was £2.16 million, compared with a total comprehensive loss of £0.83 million in the previous year.

Administrative and other costs, excluding investment income and finance charges, were £505,848 compared with £450,086 in the previous year, reflecting costs associated with the transition and strategic repositioning of the Group, including financing and governance activities.

At 31 March 2026:

• cash and cash equivalents were £629,594 (2025: £44,264);
• mineral property exploration and evaluation assets had a carrying value of £17.1 million (2025: £17.0 million);
• total net assets were £17.63 million (2025: £14.27 million); and
• Group loans had reduced to £110,000, compared with £4.05 million at 31 March 2025.

The Directors considered the carrying value of the Parys Mountain exploration and evaluation assets and concluded that there were no indicators of impairment at the reporting date.

Outlook

Following the simplification of the Group's corporate structure and renewed focus on Parys Mountain, the Board's priority is to advance one of the United Kingdom's most significant undeveloped polymetallic mineral assets through a disciplined, phased programme of technical and commercial development.

Over the coming year, the Company will follow the principal strategic pathways as outlined above.

By supporting these pathways, the Company will continue its environmental, planning, permitting and stakeholder engagement activities and maintain disciplined financial management and capital allocation.

The Board believes that Parys Mountain is well positioned to support the United Kingdom's ambition to strengthen the security of supply of critical and strategically important minerals. The UK Government's Critical Minerals Strategy identifies zinc as a Critical Mineral and copper as a Growth Mineral, recognising their importance to industrial resilience, electrification, renewable energy infrastructure and future economic growth.

Against this backdrop, Parys Mountain represents an opportunity to develop a secure domestic source of copper, zinc, lead, silver and gold while creating skilled employment, strengthening regional supply chains and delivering long-term economic benefits to North Wales and the wider United Kingdom.

While significant technical, regulatory and financing milestones remain to be achieved before any development decision can be taken, the Board believes that the combination of an established resource base, substantial exploration upside and a focused development strategy provide a strong platform for creating long-term value for shareholders and other stakeholders.

Annual Report and AGM

The full Annual Report and Accounts for the year ended 31 March 2026, which include the Notice of AGM, will be available on the Company's website at:

https://www.angleseymining.co.uk/wp-content/uploads/2026/09/ANRP26.pdf

The AGM will be held at 11.00 a.m. on Wednesday 21 October 2026 at the offices of Arch Law Limited, Huckletree Floor 2, 8 Bishopsgate, London EC2N 4BQ.

-Ends-

For further information, please contact:

Anglesey Mining plc (via Yellow Jersey PR Limited)

Jim Williams, Executive Chairman

Andrew Fulton, CEO

angleseymining@yellowjerseypr.com

Davy

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About Anglesey Mining plc:

Anglesey is advancing the UK’s largest polymetallic VMS project at the 100% owned Parys Mountain Cu-Zn-Pb-Ag-Au VMS deposit in North Wales.