National Storage Mechanism | Additional information

Rockwood Strategic plc
("RKW" or the "Company")

Blocklisting Six Monthly Return

Set out below is the block listing return for the period to 19 December 2025

Name of applicant:		Rockwood Strategic plc
Period of return:	From:	21 June 2025	To:	19 December 2025
Balance under scheme from previous return:		2,218,177 Ordinary Shares
The amount by which the block scheme has been increased, if the scheme has been increased since the date of the last return:		8,530,920 Ordinary shares (pursuant to the block listing application as announced on 30^th July 2025)
Number of securities issued/allotted under scheme during period:		10,296,677 Ordinary Shares
Balance under scheme not yet issued/allotted at end of period		452,420 Ordinary Shares
Total number of securities in issue at the end of the period		53,151,340 Ordinary Shares
Name of contact:		Christopher Hart
Telephone number of contact:		Tel: 020 7640 3200

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