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COSTAIN GROUP PLC — Investor Relations & Filings

Ticker · COST ISIN · GB00B64NSP76 LEI · 213800PKIJBZ2EDTKC88 IL Construction
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Filings indexed 941 across all filing types
Latest filing 2026-05-20 Transaction in Own Shar…
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
Transaction in Own Shares
Transaction in Own Shares Classification · 92% confidence The document is an RNS announcement detailing Costain Group PLC’s purchases of its own ordinary shares under a share buyback programme, including dates, volumes, prices, and aggregate information. It is clearly a transaction in own shares notice.
2026-05-20 English
Additional Listing
Notice of Dividend Amount Classification · 85% confidence The document is an RNS announcement by Costain Group PLC titled “2025 Final Dividend – Scrip Alternative.” It details the final dividend elections by shareholders, the number of new shares to be issued in lieu of cash, the payment date (26 May 2026), and admission of those shares to trading. This falls under Notice of Dividend Amount (DIV) as it provides dividend details, payment date, and shareholder instructions.
2026-05-18 English
Director Declaration
Board/Management Information Classification · 92% confidence The document is a brief RNS announcement stating that Tony Quinlan, a Non-Executive Director of Costain, will be appointed as an Independent Non-Executive Director of Harworth, joining its Audit and Remuneration Committees. This is a board/executive appointment announcement, fitting the Board/Management Information category.
2026-05-18 English
Result of AGM
Declaration of Voting Results & Voting Rights Announcements Classification · 92% confidence The document is an RNS notice titled “RESULTS OF 2026 AGM” detailing the poll results for each resolution at the Annual General Meeting, including votes for, against, and withheld. It does not contain financial statements or audit details, but rather the official shareholder voting outcomes. This fits the definition of a Declaration of Voting Results & Voting Rights Announcement.
2026-05-14 English
AGM Trading Update
Regulatory Filings Classification · 80% confidence The document is an RNS trading update announced ahead of the company’s Annual General Meeting, providing an operational and financial trading summary (period to date) rather than full audited results, AGM materials, or a standalone report. It does not contain substantive financial statements or constitute an investor presentation, proxy/proxy solicitation materials, or other specified filing types. Therefore, it falls under the general regulatory announcements category (RNS).
2026-05-14 English
Holding(s) in Company
Major Shareholding Notification Classification · 95% confidence The document is an RNS TR-1 notification form detailing UBS Group AG’s change in voting rights in Costain Group PLC, indicating a major shareholding level falling below the 5% threshold. This is a classic notification of a change in significant share ownership levels. Therefore it fits the “Major Shareholding Notification” category (MRQ).
2026-05-13 English

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