23 July 2024 DIRECTOR DECLARATION Keller Group plc, the world's largest geotechnical specialist contractor, announces that Non-Executive Director Paula Bell was appointed as independent Non-Executive Director of Persimmon Plc with effect from 1 September. Paula will be appointed as Chair of their Audit and Risk Committee on 1 October. This notification is made in accordance with paragraph 9.6.14R of the Listing Rules of the Financial Conduct Authority. For further information, please contact: Keller Group plcwww.keller.com Silvana Glibota-Vigo, Group Head of Secretariat 020 7616 7575 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 9,500 staff and operations across five continents, Keller tackles an unrivalled 5,500 projects every year, generating annual revenue of c.£3bn. LEI number: 549300QO4MBL43UHSN10 Classification:3.1 Additional regulated information required to be disclosed under the laws of a Member State This information was brought to you by Cision http://news.cision.com https://news.cision.com/keller-group-plc/r/director-declaration,c4017745