30 June 2025

Metals One Plc

("Metals One" or the "Company")

Notice of AGM,

Posting of Annual Report and Accounts,

Issue of Equity

&

Total Voting Rights

Metals One (AIM: MET1), a minerals exploration and development company, announces that the Company will today post a notice convening an Annual General Meeting ("AGM") to be held on Tuesday, 29 July 2025 at 2.00 p.m. BST at the offices of Hill Dickinson LLP at 8^th Floor, The Broadgate Tower, 20 Primrose Street, London, EC2A 2EW (the "Notice"). A copy of the Notice, which will be posted along with the Company's full annual report and accounts, will be available to view on the Company's website later today at: www.metals-one.com.

Issue of Equity & Total Voting Rights

Metals One also announces it has received notice of the exercise of Cash Warrants, issued pursuant to the Equity Fundraise announced on 31 January 2025, over a total of 39,250,000 ordinary shares in the Company (the "Warrants") at 2 pence per share. Metals One has also received notice of the exercise of Prepaid Warrants, issued pursuant to the Equity Fundraise announced on 31 January 2025, over a total of 37,200,000 ordinary shares in the Company.

Application has been made for the admission of the 76,450,000 new ordinary shares to trading on AIM ("Admission") pursuant to the authorities approved by shareholders at the General Meeting on 25 March 2025. The Shares will rank pari passu with the existing ordinary shares and it is expected that Admission will become effective at 8.00 a.m. on 1 July 2025.

Following Admission, the Company's issued share capital will consist of 280,047,750 ordinary shares with voting rights. Metals One does not hold any ordinary shares in treasury. This figure of 280,047,750 may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they require to notify their interest in, or a change to their interest in, the share capital of the Company under the UK Financial Conduct Authority's Disclosure Guidance and Transparency Rules.

Enquiries:

About Metals One

The race for critical minerals is on. Metals One is pursuing a critical minerals and gold exploration and M&A strategy, in low-risk jurisdictions, underpinned by the Western World's urgent need for reliably and responsibly sourced raw materials, and record high gold prices.

In addition to gold, our commodity exposure^* includes copper, nickel, cobalt, zinc, uranium, vanadium, and platinum group metals - all of which are vital to the clean energy transition.

Metals One's most advanced project is the Black Schist Project in Finland with a 57.1 Mt nickel-copper-cobalt-zinc JORC Inferred Resource adjacent to one of Europe's largest nickel producers.

Our project portfolio^* spans Finland, Norway, and the USA.

Metals One's shares are listed on the London Stock Exchange's AIM Market (MET1).

^*Includes projects for which acquisition terms have been agreed

Follow us on social media:

LinkedIn: https://www.linkedin.com/company/metals-one-plc/

X: https://x.com/metals_one_PLC

Subscribe to our news alert service on the Investors page of our website at: https://metals-one.com

Market Abuse Regulation (MAR) Disclosure

The information set out below is provided in accordance with the requirements of Article 19(3) of the Market Abuse Regulations (EU) No. 596/2014 which forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 ('MAR').

Nominated Adviser

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, 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 the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.