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COSTAIN GROUP PLC — Investor Relations & Filings

Ticker · COST ISIN · GB00B64NSP76 LEI · 213800PKIJBZ2EDTKC88 IL Construction
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Filings indexed 989 across all filing types
Latest filing 2025-12-01 Major Shareholding Noti…
Country GB United Kingdom
Listing IL COST

About COSTAIN GROUP PLC

https://www.costain.com/

Costain Group PLC is an infrastructure solutions company that provides engineering, construction, consulting, and digital services. The company specializes in delivering complex projects and transforming the performance of infrastructure across its core markets: road, rail, integrated transport, energy, water, and defence & nuclear energy. By integrating its diverse expertise, Costain engineers and delivers connected, sustainable solutions designed to address critical national challenges. Its services span the entire asset lifecycle, from initial concept and design to construction, asset optimization, and technology deployment.

Recent filings

Filing Released Lang Actions
Holding(s) in Company
Major Shareholding Notification Classification · 100% confidence The document is a 'TR-1: Standard form for notification of major holdings' filed by Costain Group PLC. It details a change in voting rights held by UBS Group AG, crossing a regulatory threshold. This is a classic major shareholding notification, which corresponds to the MRQ category.
2025-12-01 English
Director Declaration
Board/Management Information Classification · 100% confidence The document is an official announcement from Costain Group PLC regarding the external appointment of a Non-Executive Director, Tony Quinlan, to the board of another company (NextEnergy Solar Fund Limited). This falls under the category of board or management changes, specifically categorized as 'Board/Management Information' (MANG).
2025-11-26 English
Holding(s) in Company
Major Shareholding Notification Classification · 100% confidence The document is a 'TR-1: Standard form for notification of major holdings' filed by Costain Group PLC. It details a change in voting rights held by UBS Group AG, crossing a specific threshold. This is a classic regulatory disclosure regarding significant share ownership, which falls under the 'Major Shareholding Notification' category.
2025-11-21 English
Holding(s) in Company
Major Shareholding Notification Classification · 100% confidence The document is a 'TR-1: Standard form for notification of major holdings' filed by Costain Group PLC. It details a change in voting rights held by UBS Group AG, crossing a specific threshold. This is a standard regulatory disclosure for major shareholding notifications, which corresponds to the MRQ filing category.
2025-11-18 English
Costain awarded contract extension with EDF
Regulatory Filings Classification · 100% confidence The document is a press release announcing that Costain Group PLC has been awarded a new five-year contract extension with EDF. It describes the nature of the contract, its value, and the strategic partnership. Since this is a general corporate announcement regarding business operations and contract wins that does not fit into specific categories like M&A, financial results, or share transactions, it falls under the general regulatory/corporate announcement category.
2025-11-18 English
Director Declaration
Board/Management Information Classification · 100% confidence The document is an official announcement from Costain Group PLC regarding the appointment of a current Non-Executive Director to the board of another company (Rosebank Industries plc). This falls under the category of board or management changes, specifically an external appointment notification. It is not a report itself, but a regulatory announcement of a change in board-related information.
2025-11-14 English

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