Notice of Trading Update

Summary by AI ^BETAClose X

Costain Group PLC has announced that it will release a trading update for the year ending 31 December 2025 on Monday 26 January 2026, with the full year results for the same period scheduled for publication on Tuesday 10 March 2026. This update provides investors with advance notice of key financial reporting dates.

Disclaimer*

Costain Group PLC

19 December 2025

Costain Group PLC

19 December 2025

Notice of Trading Update

Costain Group PLC today announces that it plans to announce a trading update for the year ending 31 December 2025 on Monday 26 January 2026, ahead of publishing full year results for the year ending 31 December 2025 on Tuesday 10 March 2026.

Enquiries

Investors and analysts

Matt Jones, Costain

matt.jones@costain.com

+44 (0) 7860 922341

Financial media - Headland

costain@headlandconsultancy.com

Andy Rivett-Carnac

Charlie Twigg

+44 (0) 7968 997 365

+44 (0) 7946 494 568

Notes to editors

Costain improves people's lives by creating connected, sustainable infrastructure that enables people and the planet to thrive. Through the delivery of predictable, best-in-class solutions across the transport, water, energy and defence markets, we are creating a sustainable future and securing a more prosperous, resilient and decarbonised UK.

By bringing together our unique mix of construction, consultancy, engineering and digital services, we work strategically with our customers and suppliers to meet critical national needs. Together, our people transform the performance of the infrastructure that connects, protects and powers people's lives.

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