| 17/03/14 | | 11:44:41 | 17 Mar 2014 | | | Results of General Meeting | Costain Group PLC | RNS |
| 17/03/14 | | 07:00:14 | 17 Mar 2014 | | | Results of Firm Placing and Placing and Open Offer | Costain Group PLC | RNS |
| 10/03/14 | | 07:00:11 | 10 Mar 2014 | | | Re Contract | Costain Group PLC | RNS |
| 28/02/14 | | 12:33:52 | 28 Feb 2014 | | | Submission of prospectus to NSM | Costain Group PLC | RNS |
| 27/02/14 | | 16:06:41 | 27 Feb 2014 | | | Publication of Prospectus | Costain Group PLC | RNS |
| 27/02/14 | | 07:01:19 | 27 Feb 2014 | | | Final Results | Costain Group PLC | RNS |
| 27/02/14 | | 07:00:45 | 27 Feb 2014 | | | PROPOSED £75 MILLION CAPITAL RAISING | Costain Group PLC | RNS |
| 12/02/14 | | 07:00:37 | 12 Feb 2014 | | | Costain JV awarded £900m Network Rail contract | Costain Group PLC | RNS |
| 31/01/14 | | 07:00:08 | 31 Jan 2014 | | | Total Voting Rights | Costain Group PLC | RNS |
| 28/01/14 | | 07:00:12 | 28 Jan 2014 | | | Board Changes | Costain Group PLC | RNS |
| 07/01/14 | | 07:00:12 | 7 Jan 2014 | | | Trading Update | Costain Group PLC | RNS |
| 02/01/14 | | 07:01:11 | 2 Jan 2014 | | | Total Voting Rights | Costain Group PLC | RNS |
| 02/01/14 | | 07:00:14 | 2 Jan 2014 | | | Blocklisting Interim Review | Costain Group PLC | RNS |
| 20/12/13 | | 07:00:12 | 20 Dec 2013 | | | PFI Equity Disposal | Costain Group PLC | RNS |
| 19/12/13 | | 07:00:12 | 19 Dec 2013 | | | Re Contract | Costain Group PLC | RNS |
| 17/12/13 | | 07:00:07 | 17 Dec 2013 | | | Re Contract | Costain Group PLC | RNS |
| 09/12/13 | | 07:00:13 | 9 Dec 2013 | | | Re Contract | Costain Group PLC | RNS |
| 29/11/13 | | 14:56:35 | 29 Nov 2013 | | | Total Voting Rights | Costain Group PLC | RNS |
| 25/11/13 | | 07:00:07 | 25 Nov 2013 | | | Re Contract | Costain Group PLC | RNS |
| 20/11/13 | | 07:00:07 | 20 Nov 2013 | | | Board changes | Costain Group PLC | RNS |
| 18/11/13 | | 07:00:06 | 18 Nov 2013 | | | Appointment of Joint Corporate Broker | Costain Group PLC | RNS |
| 13/11/13 | | 10:38:08 | 13 Nov 2013 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 05/11/13 | | 07:00:09 | 5 Nov 2013 | | | Interim Management Statement | Costain Group PLC | RNS |
| 31/10/13 | | 07:00:19 | 31 Oct 2013 | | | Total Voting Rights | Costain Group PLC | RNS |
| 24/10/13 | | 19:00:02 | 24 Oct 2013 | | | Scrip Dividend Circular | Costain Group PLC | RNS |
| 22/10/13 | | 08:00:06 | 22 Oct 2013 | | | 2013 Interim Dividend - Scrip Alternative | Costain Group PLC | RNS |
| 21/10/13 | | 08:00:07 | 21 Oct 2013 | | | Contract Finalised with EDF for Hinkley Point | Costain Group PLC | RNS |
| 30/09/13 | | 15:13:05 | 30 Sept 2013 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 30/09/13 | | 08:00:47 | 30 Sept 2013 | | | Total Voting Rights | Costain Group PLC | RNS |
| 25/09/13 | | 15:21:46 | 25 Sept 2013 | | | Scrip Dividend Reference Price | Costain Group PLC | RNS |
| 23/09/13 | | 10:07:23 | 23 Sept 2013 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 23/09/13 | | 10:05:03 | 23 Sept 2013 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 04/09/13 | | 10:26:06 | 4 Sept 2013 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 30/08/13 | | 08:00:09 | 30 Aug 2013 | | | Total Voting Rights | Costain Group PLC | RNS |
| 28/08/13 | | 13:34:55 | 28 Aug 2013 | | | Deferred Share Bonus Plan | Costain Group PLC | RNS |
| 22/08/13 | | 08:00:11 | 22 Aug 2013 | | | Half Yearly Report | Costain Group PLC | RNS |
| 01/08/13 | | 08:02:19 | 1 Aug 2013 | | | Acquisition | Costain Group PLC | RNS |
| 31/07/13 | | 08:00:07 | 31 Jul 2013 | | | Total Voting Rights | Costain Group PLC | RNS |
| 29/07/13 | | 08:00:10 | 29 Jul 2013 | | | Re Contract | Costain Group PLC | RNS |
| 19/07/13 | | 08:00:05 | 19 Jul 2013 | | | Re: Contract | Costain Group PLC | RNS |
| 01/07/13 | | 08:00:08 | 1 Jul 2013 | | | Total Voting Rights and Capital | Costain Group PLC | RNS |
| 27/06/13 | | 08:00:07 | 27 Jun 2013 | | | Trading Update | Costain Group PLC | RNS |
| 25/06/13 | | 08:00:10 | 25 Jun 2013 | | | Block Listing Application | Costain Group PLC | RNS |
| 03/06/13 | | 08:00:11 | 3 Jun 2013 | | | Re Contract | Costain Group PLC | RNS |
| 31/05/13 | | 08:00:09 | 31 May 2013 | | | Total Voting Rights | Costain Group PLC | RNS |
| 30/05/13 | | 08:00:07 | 30 May 2013 | | | Lapse of Proposed Merger | Costain Group PLC | RNS |
| 21/05/13 | | 14:57:03 | 21 May 2013 | | | 2012 Final Dividend - Scrip Alternative | Costain Group PLC | RNS |
| 15/05/13 | | 08:00:10 | 15 May 2013 | | | Re Contract | Costain Group PLC | RNS |
| 08/05/13 | | 13:43:38 | 8 May 2013 | | | Result of AGM | Costain Group PLC | RNS |
| 08/05/13 | | 08:00:11 | 8 May 2013 | | | Interim Management Statement | Costain Group PLC | RNS |
