hVIVO plc

("hVIVO", the "Company" or the "Group")

Proposed Cancellation of Admission to Trading on Euronext Growth

hVIVO plc (AIM & Euronext: HVO), a fast-growing specialist contract research organisation (CRO) and world leader in testing infectious and respiratory disease products using human challenge clinical trials, announces its intention to cancel its admission ("the Cancellation") to trading on Euronext Growth.

As hVIVO's primary operations, along with the majority of its employees and investor base, are in the UK, the Board has decided to consolidate trading of the Company's stock to its primary listing on the AIM Market of the London Stock Exchange. The Cancellation will also remove certain costs, complexities and duplication that comes from administering two listing regimes and will have no impact on hVIVO's Ordinary Shares which will continue to trade on AIM under the ticker "HVO".

In accordance with the Euronext Growth Rules, the Company has notified Euronext of the proposed Cancellation. Under the Euronext Growth Rules, the Cancellation can only take place after the expiry of a minimum period of twenty Business Days from the date on which notice of the Cancellation is given. Accordingly, it is intended that the Cancellation will become effective at 7.00 a.m. on 2 September 2024.

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Notes to Editors

About hVIVO

hVIVO plc (ticker: HVO) is a fast-growing specialist contract research organisation (CRO) and the world leader in testing infectious and respiratory disease vaccines and therapeutics using human challenge clinical trials. The Group provides end-to-end early clinical development services to its large, established and growing repeat client base, which includes four of the top 10 largest global biopharma companies.

The Group's fast-growing services business includes a unique portfolio of 11 human challenge models, with a number of new models under development, to test a broad range of infectious and respiratory disease products. The Group has world class challenge agent manufacturing capabilities, specialist drug development and clinical consultancy services via its Venn Life Sciences brand, and a lab offering via its hLAB brand, which includes virology, immunology biomarker and molecular testing. The Group also offers additional clinical field trial services such as patient recruitment and clinical trial site services.

hVIVO runs challenge trials in London - its new state-of-the-art facilities in Canary Wharf opened in 2024 and is the world's largest commercial human challenge trial unit, with highly specialised on-site virology and immunology laboratories, and an outpatient unit. To recruit volunteers / patients for its studies, the Group leverages its unique clinical trial recruitment capability via its FluCamp volunteer screening facilities in London and Manchester.