Keller Group plc

VOTING RIGHTS AND CAPITAL

In accordance with the FCA's Disclosure, Guidance and Transparency Rule ("DGTR") 5.6.1R, Keller Group plc (the "Company") advises that, as at 28 August 2026, the total issued share capital of the Company consists of 73,099,735 ordinary shares of 10p each, of which 4,113,435 shares are held in treasury. Accordingly, the total number of voting rights in the Company's ordinary shares is 68,986,300.

The above number of 68,986,300 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's DGTR.

Additional information in accordance with the requirements of DGTR 6.2.2AR:

Legal Entity Identifier: 549300QO4MBL43UHSN10

Enquiries:

Diana Kharchenko

Assistant Company Secretary

+44 7341 735485

Please send any major shareholding notifications required under the FCA's DGTR to [email protected]

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.