Share Buyback Programme

Vesuvius plc ("Vesuvius"), a global leader in molten metal flow engineering and technology, is pleased to announce the commencement today of a share buyback programme of up to £50 million (the "Programme"). The Programme will begin today, 4 December 2023, and will end no later than 4 December 2024.

At our recent Capital Markets event we set out our medium-term financial targets, including a free cash flow target of at least £400 million over the coming three years, and set our capital allocation policy, which includes returning surplus cash to shareholders. This Programme is an initial step in that cash return.

The sole purpose of the Programme is to reduce Vesuvius' share capital. The board of directors of Vesuvius (the "Board") has decided that the shares purchased pursuant to the Programme will be cancelled.

The Programme will be conducted within the limitations of the authority granted to the Board by its shareholders at its Annual General Meeting held on 18 May 2023, pursuant to which the maximum number of ordinary shares that can be bought back by Vesuvius is 27,121,389 ordinary shares. The aggregate purchase price of all ordinary shares acquired under the Programme will be no more than £50 million (excluding stamp duty and expenses).

Any purchases of ordinary shares by Vesuvius in relation to the Programme will be carried out on the open market via the London Stock Exchange and/or on Aquis Exchange, Turquoise, CBOE Europe Limited. Any purchases will be made in accordance with the parameters prescribed by the Market Abuse Regulation 596/2014 (as it forms part of UK law pursuant to the European Union (Withdrawal) Act 2018) and Chapter 12 of the Financial Conduct Authority's Listing Rules.

Purchases of ordinary shares will be made by Jefferies on Vesuvius' behalf, who shall lead manage the purchases, shall have full discretion with respect to the execution of all purchases (including but not limited to trading decisions concerning the timing of the purchase of the ordinary shares being made independently of Vesuvius) and shall make all such purchases independently of, and uninfluenced by Vesuvius.

Vesuvius will announce any market repurchase of ordinary shares no later than 7.30am on the business day following the calendar day on which the repurchase occurred.

Vesuvius plc, 165 Fleet Street, London EC4A 2AE

Registered in England and Wales No. 8217766