| 15/07/20 | 07:00:07 | 15 Jul 2020 | | Trading Update | RNS |
| 09/07/20 | 07:00:06 | 9 Jul 2020 | | Invalidation of Birch MATA MPL phase III results | RNS |
| 01/07/20 | 17:15:33 | 1 Jul 2020 | | Total Voting Rights | RNS |
| 01/07/20 | 17:14:16 | 1 Jul 2020 | | BLOCK LISTING SIX MONTHLY RETURN | RNS |
| 24/06/20 | 16:41:12 | 24 Jun 2020 | | Second Price Monitoring Extn | RNS |
| 24/06/20 | 16:36:45 | 24 Jun 2020 | | Price Monitoring Extension | RNS |
| 24/06/20 | 07:00:05 | 24 Jun 2020 | | Trading Update | RNS |
| 18/05/20 | 14:05:49 | 18 May 2020 | | Second Price Monitoring Extn | RNS |
| 18/05/20 | 14:00:27 | 18 May 2020 | | Price Monitoring Extension | RNS |
| 23/04/20 | 16:41:26 | 23 Apr 2020 | | Second Price Monitoring Extn | RNS |
| 23/04/20 | 16:36:23 | 23 Apr 2020 | | Price Monitoring Extension | RNS |
| 22/04/20 | 10:11:46 | 22 Apr 2020 | | EAACI review of adjuvants and formulations | RNS |
| 01/04/20 | 14:09:00 | 1 Apr 2020 | | Grant and Vesting of Awards | RNS |
| 04/03/20 | 07:00:07 | 4 Mar 2020 | | Half-year Report | RNS |
| 16/01/20 | 12:25:03 | 16 Jan 2020 | | Trading Update & Notice of Results - Replacement | RNS |
| 16/01/20 | 07:00:07 | 16 Jan 2020 | | Half Year Trading Update & Notice of Results | RNS |
| 02/12/19 | 09:57:10 | 2 Dec 2019 | | Holdings in Company | RNS |
| 29/11/19 | 10:34:17 | 29 Nov 2019 | | Holdings in Company | RNS |
| 26/11/19 | 07:00:07 | 26 Nov 2019 | | Update to Grass MATA MPL Ph III clinical programme | RNS |
| 25/11/19 | 12:13:06 | 25 Nov 2019 | | Result of Annual General Meeting | RNS |
| 22/10/19 | 10:23:35 | 22 Oct 2019 | | Annual Report and Accounts | RNS |
| 25/09/19 | 08:00:05 | 25 Sept 2019 | | Preliminary Results | RNS |
| 11/07/19 | 08:00:06 | 11 Jul 2019 | | Trading update | RNS |
| 27/06/19 | 08:00:15 | 27 Jun 2019 | | Successful Litigation Settlement | RNS |
| 19/06/19 | 08:00:04 | 19 Jun 2019 | | Board Change | RNS |
| 11/06/19 | 08:00:09 | 11 Jun 2019 | | Holdings in Company | RNS |
| 20/05/19 | 08:00:20 | 20 May 2019 | | Positive top line phase I results for Acarovac MPL | RNS |
| 14/05/19 | 08:00:11 | 14 May 2019 | | Holdings in Company | RNS |
| 13/05/19 | 19:14:14 | 13 May 2019 | | Holding(s) in Company | RNS |
| 13/05/19 | 17:41:18 | 13 May 2019 | | Second Price Monitoring Extn | RNS |
| 13/05/19 | 17:35:50 | 13 May 2019 | | Price Monitoring Extension | RNS |
| 25/04/19 | 08:00:07 | 25 Apr 2019 | | Regulatory and Trading Update | RNS |
| 18/03/19 | 16:41:25 | 18 Mar 2019 | | Second Price Monitoring Extn | RNS |
| 18/03/19 | 16:36:06 | 18 Mar 2019 | | Price Monitoring Extension | RNS |
| 18/03/19 | 11:05:24 | 18 Mar 2019 | | Second Price Monitoring Extn | RNS |
| 18/03/19 | 11:00:29 | 18 Mar 2019 | | Price Monitoring Extension | RNS |
| 18/03/19 | 09:05:31 | 18 Mar 2019 | | Second Price Monitoring Extn | RNS |
| 18/03/19 | 09:00:33 | 18 Mar 2019 | | Price Monitoring Extension | RNS |
| 18/03/19 | 07:00:06 | 18 Mar 2019 | | Top Line Phase III results from B301 trial | RNS |
| 06/03/19 | 07:00:05 | 6 Mar 2019 | | Interim Results | RNS |
| 16/01/19 | 07:00:03 | 16 Jan 2019 | | Trading Update & Notice of Results | RNS |
| 29/11/18 | 17:59:23 | 29 Nov 2018 | | Holdings in Company | RNS |
| 27/11/18 | 13:12:15 | 27 Nov 2018 | | Result of AGM | RNS |
| 27/11/18 | 07:00:14 | 27 Nov 2018 | | AGM Trading Update | RNS |
| 12/11/18 | 12:00:04 | 12 Nov 2018 | | Presentation at Jefferies Healthcare Conference | RNS |
| 08/11/18 | 07:00:16 | 8 Nov 2018 | | Directorate Change | RNS |
| 07/11/18 | 18:06:55 | 7 Nov 2018 | | Holdings in Company | RNS |
| 02/11/18 | 07:00:03 | 2 Nov 2018 | | Grant of Awards under Long Term Incentive Plan | RNS |
| 24/10/18 | 14:25:50 | 24 Oct 2018 | | Holdings in Company | RNS |
| 24/10/18 | 08:00:03 | 24 Oct 2018 | | Director/PDMR Shareholding | RNS |
