Business
Block listing Interim Review
Costain Group PLC has reported a block listing six-monthly return for its Employee Sharesave Plan covering the period from July 1, 2025, to December 31, 2025. The company stated that there was no change in the balance of unallotted securities, which remained at 58,293 at the end of the period. No new securities were issued or allotted under the scheme during this reporting timeframe, and no increases to the block scheme were applied for. Disclaimer*

About this update from Costain Group Plc
Costain Group PLC BLOCK LISTING SIX MONTHLY RETURN (Note: Italicised terms have the same meaning as given in the Listing Rules.) 02 January 2026 Name of applicant : Costain Group PLC ("the Company") Name of scheme(s): The Company's Employee Sharesave Plan. Period of return: From: 1 July 2025 To: 31 December 2025 Balance of unallotted securities under scheme(s) from previous return: 58,293 Plus: The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for): Nil Less: Number of securities issued/allotted under scheme(s) during period (see UKLR20.6.6R): Nil Equals: Balance under scheme(s) not yet issued/allotted at end of period: 58,293 There was no change in the reporting period. Name of contact: Cyd Trumper, Senior Assistant Company Secretary Telephone number of contact: 07876 133084