Block Listing Application

19 January 2026

ROCKWOOD STRATEGIC PLC

("Rockwood Strategic" or the "Company")

Block Listing Application

Further to the: (i) introduction of the Public Offers and Admissions to Trading Regulations 2024 earlier today; and (ii) resolutions passed by the shareholders at the Company's General Meeting on 12 January 2026, the Board announces that a further application has been made to the London Stock Exchange for the block listing of 19,050,704 new ordinary shares of 5 pence each in the capital of the Company (the "Shares"). This block listing will be used for the purposes of responding to satisfy market demand and, as a result, ensure an efficient market in its Shares. It is expected that this block listing will become effective at 8.00 a.m. on 20 January 2026.

Any Shares issued in connection with this block listing application:

• will be issued at prices which shall be a premium to latest net asset value per Share prior to the issue and, therefore, will not result in any dilution of the net asset value per existing Shares; and

• will rank, when issued, pari passu with the Shares already in issue.

For further information, please contact: