Business
Total Voting Rights
As of October 31, 2025, Costain Group PLC's issued share capital consists of 266,714,895 ordinary shares. Each share has a nominal value of 1 pence and carries one vote. The company does not hold any ordinary shares in treasury. The total number of shares, 266,714,895, can be used by shareholders to calculate if they need to notify the company of their interest in Costain according to FCA rules. Disclaimer*
About this update from Costain Group Plc
Costain Group PLC (the 'Company') 3 November 2025 Total Voting Rights and Capital In conformity with the Financial Conduct Authority's ("FCA") Disclosure Guidance and Transparency Rule 5.6.1(R) the Company notifies the market that: As at 31 October 2025, the Company's issued share capital comprised 266,714,895 ordinary shares of 1 pence each, with each share carrying the right to one vote. The Company does not hold any ordinary shares in treasury. The figure of 266,714,895 shares 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 Costain, or a change to their interest in Costain, under the FCA's Disclosure Guidance and Transparency Rules. Enquiries Investors and analysts Matt Jones, Costain [email protected] + 44 (0)7860 922341 Financial media - Headland [email protected] Andy Rivett-Carnac +44 (0)7968 997365 Charlie Twigg +44 (0)7946 494568