| 04/09/25 | 17:20:12 | 4 Sept 2025 | | Notification of major holdings - Robert Cross | RNS |
| 04/09/25 | 17:17:18 | 4 Sept 2025 | | Notification of major holdings - Carolyn Cross | RNS |
| 03/09/25 | 07:00:17 | 3 Sept 2025 | | Ondine to present Health Economic Data at ICPIC | RNS |
| 01/09/25 | 07:00:10 | 1 Sept 2025 | | Total Voting Rights Correction | RNS |
| 28/08/25 | 07:00:10 | 28 Aug 2025 | | Result of Fundraise & TVR | RNS |
| 27/08/25 | 16:52:32 | 27 Aug 2025 | | Proposed c.£11m Fundraise | RNS |
| 13/08/25 | 10:52:14 | 13 Aug 2025 | | First Mexican Hospital Steriwave Deployment | RNS |
| 11/08/25 | 07:00:13 | 11 Aug 2025 | | Ex-President of Mexico Champions APDT to Cut AMR | RNS |
| 22/07/25 | 17:38:43 | 22 Jul 2025 | | Share Issuance for ICU Study Enrollment Completion | RNS |
| 21/07/25 | 09:00:01 | 21 Jul 2025 | | UK Axes Financial support for AMR Fleming Fund | RNS |
| 21/07/25 | 07:00:08 | 21 Jul 2025 | | Steriwave ICU Study Completes Recruitment | RNS |
| 14/07/25 | 07:00:14 | 14 Jul 2025 | | Growing Use of Steriwave Across Surgery Types | RNS |
| 08/07/25 | 10:21:58 | 8 Jul 2025 | | Steriwave in Half of Fraser Health Hospitals | RNS |
| 01/07/25 | 07:00:08 | 1 Jul 2025 | | Ondine Appoints Peel Hunt as Broker | RNS |
| 30/06/25 | 07:00:15 | 30 Jun 2025 | | Leading Canadian Surgery Centre Adopts Steriwave | RNS |
| 26/06/25 | 18:02:03 | 26 Jun 2025 | | Result of AGM and voting results | RNS |
| 25/06/25 | 07:00:11 | 25 Jun 2025 | | Steriwave Standard of Care in 2nd Health Authority | RNS |
| 19/06/25 | 07:00:10 | 19 Jun 2025 | | Second Quebec Hospital Adopts Steriwave | RNS |
| 16/06/25 | 07:00:14 | 16 Jun 2025 | | UK Doctor Wins Award for NHS Steriwave Innovation | RNS |
| 12/06/25 | 07:00:11 | 12 Jun 2025 | | NHS Trust up for HSJ Award for Steriwave Use | RNS |
| 10/06/25 | 07:29:05 | 10 Jun 2025 | | Ondine Presents Groundbreaking Findings | RNS |
| 10/06/25 | 07:00:02 | 10 Jun 2025 | | Exercise of Options | RNS |
| 09/06/25 | 07:00:07 | 9 Jun 2025 | | UCL Shows Steriwave Effective Against Mucor Fungus | RNS |
| 05/06/25 | 07:00:19 | 5 Jun 2025 | | Canada's Largest Cardiac Centre Adopts Steriwave | RNS |
| 04/06/25 | 07:00:10 | 4 Jun 2025 | | Notice of AGM | RNS |
| 15/05/25 | 07:00:12 | 15 May 2025 | | 2024 Full Year Results and Annual Report | RNS |
| 12/05/25 | 07:00:11 | 12 May 2025 | | Ondine Joins CAN Health Network | RNS |
| 09/05/25 | 07:00:04 | 9 May 2025 | | Appointment of non-Board Interim CFO | RNS |
| 08/05/25 | 07:00:12 | 8 May 2025 | | Notice of Results and Investor Presentation | RNS |
| 09/04/25 | 07:00:08 | 9 Apr 2025 | | Economic study suggests c.£200 million UK savings | RNS |
| 08/04/25 | 17:00:00 | 8 Apr 2025 | | Replacement: Steriwave in first Swiss hospital | RNS |
| 08/04/25 | 07:00:14 | 8 Apr 2025 | | Steriwave in first Swiss hospital | RNS |
| 02/04/25 | 07:00:11 | 2 Apr 2025 | | Mid Yorkshire NHS Trust cuts SSI rates by 71% | RNS |
| 28/03/25 | 15:00:00 | 28 Mar 2025 | | Board Changes | RNS |
| 19/03/25 | 07:00:07 | 19 Mar 2025 | | Steriwave enters ICU and related Issue of Shares | RNS |
| 17/03/25 | 07:00:11 | 17 Mar 2025 | | Quebec Hospital Cuts Spine SSIs by 78% | RNS |
| 14/03/25 | 07:00:09 | 14 Mar 2025 | | Exercise of Options | RNS |
| 26/02/25 | 08:00:00 | 26 Feb 2025 | | Grant of Options | RNS |
| 26/02/25 | 07:00:09 | 26 Feb 2025 | | Seasoned MedTech Exec Appointed as CFO & COO | RNS |
| 19/02/25 | 07:00:08 | 19 Feb 2025 | | Nasal photodisinfection US market potential | RNS |
| 06/02/25 | 11:00:00 | 6 Feb 2025 | | Ondine President increases shareholding | RNS |
| 04/02/25 | 08:30:00 | 4 Feb 2025 | | Ondine CEO increases shareholding | RNS |
| 03/02/25 | 08:00:00 | 3 Feb 2025 | | Ondine CEO increases ownership | RNS |
| 03/02/25 | 07:00:08 | 3 Feb 2025 | | Appointment of Nominated and Financial Adviser | RNS |
| 31/01/25 | 10:03:27 | 31 Jan 2025 | | CEO Increases Stake in Ondine | RNS |
| 31/01/25 | 09:52:31 | 31 Jan 2025 | | Replacement: Director Increases Stake in Ondine | RNS |
| 31/01/25 | 07:00:07 | 31 Jan 2025 | | Director Increases Stake in Ondine | RNS |
| 30/01/25 | 17:49:25 | 30 Jan 2025 | | Notification of Major Holdings | RNS |
| 29/01/25 | 17:00:00 | 29 Jan 2025 | | Notification of Major Holdings | RNS |
| 29/01/25 | 07:15:29 | 29 Jan 2025 | | Grant of Options and Warrants | RNS |
