| 03/04/17 | | 16:41:02 | 3 Apr 2017 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 31/03/17 | | 11:07:22 | 31 Mar 2017 | | | Total Voting Rights | Costain Group PLC | RNS |
| 24/03/17 | | 09:28:36 | 24 Mar 2017 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 20/03/17 | | 12:22:41 | 20 Mar 2017 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 17/03/17 | | 07:00:08 | 17 Mar 2017 | | | Notice of AGM | Costain Group PLC | RNS |
| 14/03/17 | | 14:30:27 | 14 Mar 2017 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 13/03/17 | | 12:12:46 | 13 Mar 2017 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 01/03/17 | | 07:00:20 | 1 Mar 2017 | | | Final Results | Costain Group PLC | RNS |
| 28/02/17 | | 10:56:51 | 28 Feb 2017 | | | Total Voting Rights | Costain Group PLC | RNS |
| 16/12/16 | | 07:00:08 | 16 Dec 2016 | | | Contract | Costain Group PLC | RNS |
| 14/12/16 | | 10:00:02 | 14 Dec 2016 | | | Transfer of Shares | Costain Group PLC | RNS |
| 01/12/16 | | 09:53:35 | 1 Dec 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 30/11/16 | | 10:11:31 | 30 Nov 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 30/11/16 | | 08:00:02 | 30 Nov 2016 | | | Total Voting Rights | Costain Group PLC | RNS |
| 21/11/16 | | 07:00:09 | 21 Nov 2016 | | | Contract | Costain Group PLC | RNS |
| 15/11/16 | | 07:00:09 | 15 Nov 2016 | | | Contract | Costain Group PLC | RNS |
| 04/11/16 | | 13:48:23 | 4 Nov 2016 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 01/11/16 | | 09:37:06 | 1 Nov 2016 | | | Total Voting Rights | Costain Group PLC | RNS |
| 31/10/16 | | 07:00:08 | 31 Oct 2016 | | | Total Voting Rights | Costain Group PLC | RNS |
| 19/10/16 | | 17:36:58 | 19 Oct 2016 | | | Dividend Declaration - Amendment | Costain Group PLC | RNS |
| 18/10/16 | | 09:00:02 | 18 Oct 2016 | | | Dividend - Scrip Alternative | Costain Group PLC | RNS |
| 27/09/16 | | 13:38:49 | 27 Sept 2016 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 23/09/16 | | 12:06:37 | 23 Sept 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 22/09/16 | | 12:43:50 | 22 Sept 2016 | | | Scrip Dividend Reference Price | Costain Group PLC | RNS |
| 20/09/16 | | 13:57:37 | 20 Sept 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 06/09/16 | | 13:11:34 | 6 Sept 2016 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 01/09/16 | | 13:13:46 | 1 Sept 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 30/08/16 | | 17:28:22 | 30 Aug 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 30/08/16 | | 17:08:54 | 30 Aug 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 24/08/16 | | 08:00:08 | 24 Aug 2016 | | | Half-year Report | Costain Group PLC | RNS |
| 11/07/16 | | 11:16:49 | 11 Jul 2016 | | | Director Declaration | Costain Group PLC | RNS |
| 06/07/16 | | 08:00:06 | 6 Jul 2016 | | | Acquisition | Costain Group PLC | RNS |
| 30/06/16 | | 13:53:42 | 30 Jun 2016 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 30/06/16 | | 09:57:40 | 30 Jun 2016 | | | Block listing Interim Review | Costain Group PLC | RNS |
| 30/06/16 | | 08:00:08 | 30 Jun 2016 | | | Trading Update | Costain Group PLC | RNS |
| 17/06/16 | | 08:00:10 | 17 Jun 2016 | | | Business Briefing | Costain Group PLC | RNS |
| 31/05/16 | | 10:00:02 | 31 May 2016 | | | Total Voting Rights | Costain Group PLC | RNS |
| 17/05/16 | | 08:00:09 | 17 May 2016 | | | Dividend - Scrip Alternative | Costain Group PLC | RNS |
| 16/05/16 | | 16:03:04 | 16 May 2016 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 05/05/16 | | 17:51:24 | 5 May 2016 | | | Result of AGM | Costain Group PLC | RNS |
| 05/05/16 | | 08:00:08 | 5 May 2016 | | | AGM Statement | Costain Group PLC | RNS |
| 25/04/16 | | 08:00:08 | 25 Apr 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 21/04/16 | | 15:05:54 | 21 Apr 2016 | | | Scrip Dividend Reference Price | Costain Group PLC | RNS |
| 18/04/16 | | 11:22:26 | 18 Apr 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
| 06/04/16 | | 08:00:08 | 6 Apr 2016 | | | Appointment of Chairman Designate | Costain Group PLC | RNS |
| 04/04/16 | | 11:38:28 | 4 Apr 2016 | | | Director/PDMR Shareholding | Costain Group PLC | RNS |
| 31/03/16 | | 11:32:32 | 31 Mar 2016 | | | Notice of AGM | Costain Group PLC | RNS |
| 02/03/16 | | 07:00:07 | 2 Mar 2016 | | | Final Results | Costain Group PLC | RNS |
| 01/02/16 | | 07:00:12 | 1 Feb 2016 | | | Re Contract | Costain Group PLC | RNS |
| 21/01/16 | | 09:07:28 | 21 Jan 2016 | | | Holding(s) in Company | Costain Group PLC | RNS |
