| Date | Source | Headline | |
|---|---|---|---|
| 4th Feb 2026 | 6:22 pm | RNS | Holding(s) in Company |
| 29th Jan 2026 | 10:17 am | RNS | Holding(s) in Company |
| 28th Jan 2026 | 10:58 am | RNS | Holding(s) in Company |
| 27th Jan 2026 | 7:00 am | RNS | Costain Awarded Contract for New M5 Junction |
| 26th Jan 2026 | 6:27 pm | RNS | Holding(s) in Company |
| 26th Jan 2026 | 7:00 am | RNS | New Pension Scheme Agreement & FY25 Trading Update |
| 23rd Jan 2026 | 3:38 pm | RNS | Holding(s) in Company |
| 22nd Jan 2026 | 5:15 pm | RNS | Holding(s) in Company |
| 21st Jan 2026 | 1:29 pm | RNS | Holding(s) in Company |
| 16th Jan 2026 | 2:27 pm | RNS | Holding(s) in Company |
| 16th Jan 2026 | 7:00 am | RNS | Holding(s) in Company |
| 13th Jan 2026 | 2:49 pm | RNS | Holding(s) in Company |
| 5th Jan 2026 | 3:43 pm | RNS | Holding(s) in Company |
| 2nd Jan 2026 | 11:45 am | RNS | Holding(s) in Company |
| 2nd Jan 2026 | 11:09 am | RNS | Block listing Interim Review |
| 31st Dec 2025 | 12:16 pm | RNS | Holding(s) in Company |
| 31st Dec 2025 | 12:16 pm | RNS | Holding(s) in Company |
| 30th Dec 2025 | 2:12 pm | RNS | Holding(s) in Company |
| 30th Dec 2025 | 2:12 pm | RNS | Holding(s) in Company |
| 29th Dec 2025 | 11:18 am | RNS | Holding(s) in Company |
| 29th Dec 2025 | 11:18 am | RNS | Holding(s) in Company |
| 23rd Dec 2025 | 1:41 pm | RNS | Holding(s) in Company |
| 23rd Dec 2025 | 1:41 pm | RNS | Holding(s) in Company |
| 22nd Dec 2025 | 9:38 am | RNS | Holding(s) in Company |
| 22nd Dec 2025 | 9:38 am | RNS | Holding(s) in Company |
| 19th Dec 2025 | 11:35 am | RNS | Holding(s) in Company |
| 19th Dec 2025 | 11:35 am | RNS | Holding(s) in Company |
| 19th Dec 2025 | 7:00 am | RNS | Notice of Trading Update |
| 19th Dec 2025 | 7:00 am | RNS | Notice of Trading Update |
| 18th Dec 2025 | 9:40 am | RNS | Holding(s) in Company |
| 17th Dec 2025 | 4:39 pm | RNS | Holding(s) in Company |
| 16th Dec 2025 | 3:40 pm | RNS | Holding(s) in Company |
| 16th Dec 2025 | 3:40 pm | RNS | Holding(s) in Company |
| 15th Dec 2025 | 3:49 pm | RNS | Holding(s) in Company |
| 12th Dec 2025 | 12:20 pm | RNS | Holding(s) in Company |
| 11th Dec 2025 | 4:15 pm | RNS | Director/PDMR Shareholding |
| 5th Dec 2025 | 11:58 am | RNS | Holding(s) in Company |
| 4th Dec 2025 | 10:01 am | RNS | Holding(s) in Company |
| 1st Dec 2025 | 5:40 pm | RNS | Holding(s) in Company |
| 26th Nov 2025 | 11:00 am | RNS | Director Declaration |
| 21st Nov 2025 | 9:24 am | RNS | Holding(s) in Company |
| 18th Nov 2025 | 5:01 pm | RNS | Holding(s) in Company |
| 18th Nov 2025 | 7:00 am | RNS-R | Costain awarded contract extension with EDF |
| 14th Nov 2025 | 11:04 am | RNS | Director Declaration |
| 13th Nov 2025 | 2:20 pm | RNS | Holding(s) in Company |
| 7th Nov 2025 | 10:18 am | RNS | Holding(s) in Company |
| 4th Nov 2025 | 4:25 pm | RNS | Holding(s) in Company |
| 3rd Nov 2025 | 1:30 pm | RNS | Holding(s) in Company |
| 3rd Nov 2025 | 11:59 am | RNS | Total Voting Rights |
| 30th Oct 2025 | 3:08 pm | RNS | Holding(s) in Company |
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