Rule 2.9 Announcement

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION

FOR IMMEDIATE RELEASE

7 October 2026

Senior plc

("Senior" or the "Company")

Rule 2.9 Announcement

Senior announces that, in accordance with Rule 2.9 of the City Code on Takeovers and Mergers, as at the close of business on 6 October 2026, it had 424,806,996 ordinary shares of 10 pence each in issue.  The ISIN reference for these securities is GB0007958233 and the Company's LEI number is 5493002HQHWN5JQHKQ51.

Further information:

Senior