HVIVO PLC

Report Publication Announcement • Sep 4, 2025

National Storage Mechanism | Additional information

RNS Number : 9036X

hVIVO PLC

04 September 2025

hVIVO plc

("hVIVO" or the "Company")

Notice of Results

hVIVO plc (AIM: HVO), a full-service Contract Research Organisation (CRO) and the world leader in human challenge clinical trials, announces that it will release its interim results for the six months ended 30 June 2025 on Tuesday 23 September 2025.

Analyst briefing

A briefing open to equity research analysts will take place on Tuesday 23 September 2025 at 10.30am BST. To register and for more details please contact Walbrook PR on [email protected] .

Investor presentation

Yamin 'Mo' Khan, Chief Executive Officer, and Stephen Pinkerton, Chief Financial Officer, will provide a live presentation relating to the interim results via the Investor Meet Company platform on Tuesday 23 September 2025 at 6.00pm BST.

The presentation is open to all existing and potential shareholders. Questions can be submitted pre-event via your Investor Meet Company dashboard up until 9am the day before the meeting or at any time during the live presentation.

Investors can sign up to Investor Meet Company for free and add to meet hVIVO here . Investors who already follow hVIVO on the Investor Meet Company platform will automatically be invited.

For further information please contact:

hVIVO plc		+44 (0)20 7756 1300
Yamin 'Mo' Khan, Chief Executive Officer Stephen Pinkerton, Chief Financial Officer
Cavendish Capital Markets Limited (Nominated Adviser and Joint Broker)				+44 (0)20 7220 0500
Geoff Nash, Callum Davidson, Trisyia Jamaludin, Harriet Ward Nigel Birks - Life Science Specialist Sales Louise Talbot - Sales
P eel Hunt L LP (Joint Broker)			+44 (0)20 7418 8900
James Steel, Dr Christopher Golden
Davy (Joint Broker)			+353 (0) 1 679 6363
Anthony Farrell, Niall Gilchrist
Walbrook PR (Financial PR & IR) Paul McManus / Alice Woodings / Lianne Applegarth		+44 (0) 20 7933 8780 or  [email protected] +44 (0)7980 541 893 / +44 (0)7407 804 654/ +44 (0)7584 391 303

Notes to Editors

hVIVO plc (Ticker: HVO) is full-service Contract Research Organisation (CRO) and the global leader in human challenge trials. The company delivers end-to-end clinical development services to a diverse and expanding client base, including seven of the world's ten largest biopharma companies.

hVIVO specialises in conducting human challenge trials across multiple infectious and respiratory indications, leveraging its state-of-the-art quarantine facility in London-the largest of its kind worldwide. The company also offers comprehensive virology and immunology laboratory services under the hLAB brand.

Through its German subsidiary, CRS, hVIVO operates a 120-bed capacity across Mannheim and Kiel, providing early-phase clinical trial services, including first-in-human and proof-of-concept studies. Its second subsidiary, Venn Life Sciences, offers Early Drug Development Consulting and Biometry services to the biopharma sector.

The Group provides fully integrated drug development solutions from preclinical stages through Phase II trials, alongside patient recruitment via FluCamp. Additionally, its five clinical sites support outpatient Phase II and III trials, ensuring a seamless and efficient pathway from discovery to late-stage development.

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