Balfour Beatty Regulatory News (BBY)

Balfour Beatty plc (the 'Company')

TOTAL VOTING RIGHTS AND ISSUED SHARE CAPITAL

In accordance with the Financial Conduct Authority's ('FCA') Disclosure Guidance and Transparency Rule 5.6.1R, the Company notifies the market that, as at 31 May 2026:

§ the Company's issued share capital comprised 492,848,584 Ordinary shares of 50p each ('Shares'), each with one vote;

§ 9,931,261 Ordinary shares of 50p each are held in treasury. These shares are not taken into consideration in relation to the payment of dividends and voting at shareholder meetings; and

§ the total number of voting rights in the Company is 482,917,323.

The above figure of 482,917,323 may be used by shareholders (and others with notification obligations) as the denominator for the calculations by which they can determine whether they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure Guidance and Transparency Rules. Any notification to the Company relating to an interest in, or a change to an interest, in the Company under the FCA's Disclosure Guidance and Transparency Rules should be sent by email to companysecretary@balfourbeatty.com and investorrelations@balfourbeatty.com.

Analyst/investor enquiries: Jim RyanTel. +44 (0)785 836 8527jim.ryan@balfourbeatty.com

Media enquiries: Vivienne DunnTel. +44 (0)203 810 2345vivienne.dunn@balfourbeatty.com

Notes to editors:

· Balfour Beatty is a leading international infrastructure group with 27,000 employees driving the delivery of powerful new solutions, shaping thinking, creating skylines and inspiring a new generation of talent to be the change-makers of tomorrow.

· We finance, develop, build, maintain and operate the increasingly complex and critical infrastructure that supports national economies and deliver projects at the heart of local communities.

· For over 100 years, we have created iconic buildings and infrastructure all over the world. Currently, we are working to deliver Hinkley Point C, the first UK nuclear power station in a generation; constructing the world-class arts and cultural facility, the Lyric Theatre, in Hong Kong; and designing, building, financing, operating and maintaining the Automated People Mover superstructure at the fifth busiest airport in the world, Los Angeles International Airport.

Legal Entity Identifier: CT4UIJ3TUKGYYHMENQ17