Company Announcements

BLOCK LISTING SIX MONTHLY RETURN

Information provided on this form must be typed or printed electronically and provided to an ris.

(Note: Italicised termshave the same meaning as given in the Listing Rules.)

Date: 02 January 2026

        Name of applicant:      Keller Group plcName of scheme:         Keller Group plc
                        Performance Share Plan

Period of return: From: 01/07/2025 To: 31/12/2025

Balance of unallotted
securities under scheme 371,500 ordinary 10p
(s) from previous       shares
return:

Plus:The amount by
which the block scheme
(s) has been increased
since the date of the   Nil
last return (if any
increase has been
applied for):

Less:Number of
securities
issued/allotted under   Nil
scheme(s) during period
(see LR3.5.7G):

Equals:Balance under
scheme(s) not yet       371,500
issued/allotted at end
of period:

        Name of contact:             Jamie Dearsley, Company Secretarial Assistant

Telephone number of contact: +44(0)207 616 7575

LEI number:                  549300QO4MBL43UHSN10

Classification:              3.1 Additional regulated information required to be
                             disclosed under the laws of a Member State