Personal financial planning - transfer of shares between personal accounts via "Bed and ISA" facility, effected through the sale of 5,306 shares and subsequent repurchase of 5,274 shares. The lower number of shares repurchased accounts for costs of the transfer and a minor change in share price between sale and repurchase. of 5,306 shares at £3.77

1

Details of the person discharging managerial responsibilities / person closely associated

a)

Name

Mark Collis

2

Reason for the notification

a)

Position/status

Chief Financial Officer

b)

Initial notification /Amendment

Initial notification

3

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

Vesuvius plc

b)

LEI

213800ORZ521W585SY02

4

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted

a)

Description of the financial instrument, type of instrument

Vesuvius plc 10 pence ordinary shares

Identification code

ISIN: GB00B82YXW83

b)

Nature of the transaction

Personal financial planning - transfer of shares between personal accounts via "Bed and ISA" facility, effected through the sale of 5,306 shares and subsequent repurchase of 5,274 shares. The lower number of shares repurchased accounts for costs of the transfer and a minor change in share price between sale and repurchase.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£3.77

5,306 sold

£3.77

5,274 repurchased

d)

Aggregated information

- Aggregated volume

10,580 (5,306 sold and 5,274 repurchased)

- Price

Sale of shares: £3.77

Repurchase of shares: £3.77

- Aggregated total

£20,003.62 sold

£19,882.98 repurchased

e)

Date of the transaction

4 September 2026

f)

Place of the transaction

London Stock Exchange (XLON)