| 21/02/22 | 16:40:58 | 21 Feb 2022 | | Second Price Monitoring Extn | RNS |
| 21/02/22 | 16:35:43 | 21 Feb 2022 | | Price Monitoring Extension | RNS |
| 15/11/21 | 08:20:13 | 15 Nov 2021 | | OIH BOD Minutes Summary | RNS |
| 11/10/21 | 07:29:06 | 11 Oct 2021 | | OIH Press Release | RNS |
| 13/09/21 | 09:34:29 | 13 Sept 2021 | | OIH BOD Summary | RNS |
| 07/07/21 | 09:17:44 | 7 Jul 2021 | | OIH BOD Summary | RNS |
| 05/07/21 | 09:30:59 | 5 Jul 2021 | | OIH's OGM Summary | RNS |
| 16/06/21 | 10:06:31 | 16 Jun 2021 | | OIH Press Release | RNS |
| 01/06/21 | 10:12:17 | 1 Jun 2021 | | OIH's OGM Invitation | RNS |
| 01/06/21 | 07:00:07 | 1 Jun 2021 | | OIH BOD Summary | RNS |
| 28/04/21 | 09:32:04 | 28 Apr 2021 | | OIH BOD Summary | RNS |
| 16/02/21 | 12:23:31 | 16 Feb 2021 | | OIH's Announcement | RNS |
| 05/02/21 | 17:26:57 | 5 Feb 2021 | | Suspension of Trading Notice | RNS |
| 04/01/21 | 16:41:19 | 4 Jan 2021 | | Second Price Monitoring Extn | RNS |
| 04/01/21 | 16:36:26 | 4 Jan 2021 | | Price Monitoring Extension | RNS |
| 09/12/20 | 09:18:04 | 9 Dec 2020 | | OIH EGM Summary | RNS |
| 09/12/20 | 09:17:06 | 9 Dec 2020 | | OIH OGM Summary | RNS |
| 24/11/20 | 08:16:32 | 24 Nov 2020 | | OIH Amended EGM Voting Card | RNS |
| 24/11/20 | 08:12:04 | 24 Nov 2020 | | OIH OGM Amended Voting Card | RNS |
| 24/11/20 | 08:07:27 | 24 Nov 2020 | | OIH Amended OGM Invitation | RNS |
| 23/11/20 | 07:00:05 | 23 Nov 2020 | | OIH BOD Summary | RNS |
| 17/11/20 | 09:46:59 | 17 Nov 2020 | | EGM Voting Card | RNS |
| 17/11/20 | 09:44:38 | 17 Nov 2020 | | OGM Voting Card | RNS |
| 16/11/20 | 07:00:06 | 16 Nov 2020 | | OIH EGM Invitation | RNS |
| 16/11/20 | 07:00:06 | 16 Nov 2020 | | OIH OGM Invitation | RNS |
| 12/11/20 | 08:27:33 | 12 Nov 2020 | | OIH BOD Minutes Summary | RNS |
| 20/10/20 | 09:33:00 | 20 Oct 2020 | | OIH EGM Summary | RNS |
| 12/10/20 | 10:23:01 | 12 Oct 2020 | | IFRS Q4 2019 | RNS |
| 12/10/20 | 10:08:55 | 12 Oct 2020 | | OIH IFRS Q3 2019 | RNS |
| 05/10/20 | 07:00:05 | 5 Oct 2020 | | OIH BOD Minutes Summary | RNS |
| 29/09/20 | 16:40:33 | 29 Sept 2020 | | Second Price Monitoring Extn | RNS |
| 29/09/20 | 16:35:37 | 29 Sept 2020 | | Price Monitoring Extension | RNS |
| 28/09/20 | 12:48:57 | 28 Sept 2020 | | EGM Voting Card | RNS |
| 23/09/20 | 09:10:24 | 23 Sept 2020 | | OIH EGM Invitation | RNS |
| 17/09/20 | 12:08:09 | 17 Sept 2020 | | Second Price Monitoring Extn | RNS |
| 17/09/20 | 12:02:35 | 17 Sept 2020 | | Price Monitoring Extension | RNS |
| 14/09/20 | 09:39:46 | 14 Sept 2020 | | BOD Minutes Summary | RNS |
| 18/08/20 | 16:41:39 | 18 Aug 2020 | | Second Price Monitoring Extn | RNS |
| 18/08/20 | 16:36:29 | 18 Aug 2020 | | Price Monitoring Extension | RNS |
| 11/08/20 | 09:29:24 | 11 Aug 2020 | | OIH Board Meeting Minutes Summary | RNS |
| 05/08/20 | 10:19:52 | 5 Aug 2020 | | OIH Press Release | RNS |
| 28/07/20 | 10:11:32 | 28 Jul 2020 | | OIH Board Meeting Minutes Summary | RNS |
| 27/07/20 | 09:41:55 | 27 Jul 2020 | | OIH Board Meeting Minutes Summary | RNS |
| 16/01/20 | 16:35:22 | 16 Jan 2020 | | Price Monitoring Extension | RNS |
| 19/12/19 | 16:40:40 | 19 Dec 2019 | | Second Price Monitoring Extn | RNS |
| 19/12/19 | 16:35:19 | 19 Dec 2019 | | Price Monitoring Extension | RNS |
| 02/12/19 | 07:00:04 | 2 Dec 2019 | | OIH Board Meeting minutes Summary | RNS |
| 11/11/19 | 13:59:30 | 11 Nov 2019 | | OIH's Announcement | RNS |
| 04/11/19 | 07:42:16 | 4 Nov 2019 | | OIH's Announcement | RNS |
| 04/11/19 | 07:40:15 | 4 Nov 2019 | | OIH Board Meeting Minutes Summary | RNS |
