Keller Group plc

Director/PDMR Shareholding

Keller Group plc (the "Company") announces that on 14 April 2026 it was notified of the following transaction in the Company's ordinary shares of 10 pence each (“Shares”) undertaken by a Person Discharging Managerial Responsibilities :

Deepak Raj, President APAC (Asia-Pacific) , disposed of 26,601 Shares at GBP 21.40 per Share.

The transaction took place on 13 April 2026 in London (XLON).

The Notification of Dealing Form for the PDMR can be found below.

Enquiries:

Keller Group plc
Silvana Glibota-Vigo, Group Head of Secretariat
Tel: +44 207 616 7582

Notes to editors:

Keller is the world's largest geotechnical specialist contractor providing a wide portfolio of advanced foundation and ground improvement techniques used across the entire construction sector. With around 10,000 staff and operations across five continents, Keller tackles an unrivalled 5,500 projects every year, generating annual revenue of c.£3bn.

NOTIFICATION AND PUBLIC DISCLOSURE OF TRANSACTIONS BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM

    1       Details of persons discharging managerial responsibility (“PDMR”)
        / person closely associated (“PCA”)

    a)      Name                     Deepak Raj

    2       Reason for the notification

                                   PDMR        (Provide      PCA        (Provide
    a)                         job title)                name of job title of
            Position / status                            relevant PDMR)

                                     President, APAC         N/A

    b)      Initial               Initial notification
        notification/Amendment

    3        Details of the issuer

    a)      Name                  Keller Group plc

            LEI and                549300QO4MBL43UHSN10
    b)  classification
                                  2.2 Inside information

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

            Description of the
        financial instrument        Ordinary shares of 10p each
    a)
            Identification     GB0004866223
        code

     b)      Indicate nature                    Disposal                   Other
        of the transaction     Acquisition               Subscription

              ii) Is the             Yes                       No
        transaction linked to
        an exercise of a share                                 X
        award?

                                                               If yes, provide
              iii) Was the                               date at which
        transaction conducted        Yes         No      investment programme or
        pursuant to an                                   trading plan was
        investment programme                             entered into:
        or a trading plan?
                                                 X

    c)                             Price(s)                  Volume(s)
            Price(s) and       (Please state currency)
        volume(s)
                                  GBP 21.40                  26,601

                                    Aggregated price(s)
    d)                                                       Aggregated volume
            Aggregated            (Please state          (s)
        information            currency)

                                   Not applicable -          Not applicable -
                               single transaction        single transaction

    e)      Date of the            Date: 13.04.2026
        transaction                 Time zone: GMT

    f)      Place of the          London Stock Exchange
        transaction