The following amendment has been made to the 'Subscription of New Ordinary Shares, Warrant Issue, PDMR Dealings ' announcement released on 01 October 2025 at 07:59 a.m. (BST) under RNS No 8077B.

The sentence "being the bid price as at close of business on 1 October 2025" has been corrected to "being a 35% discount to the bid price as at close of business on 1 October 2025."

All other details remain unchanged.

The full amended text is shown below.

THE INFORMATION CONTAINED WITHIN THIS ANNOUNCEMENT IS DEEMED BY THE COMPANY TO CONSTITUTE INSIDE INFORMATION AS STIPULATED UNDER THE MARKET ABUSE REGULATION (EU) NO. 596/2014 AS IT FORMS PART OF UK DOMESTIC LAW PURSUANT TO THE EUROPEAN UNION (WITHDRAWAL) ACT 2018, AS AMENDED. UPON THE PUBLICATION OF THIS ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INFORMATION IS CONSIDERED TO BE IN THE PUBLIC DOMAIN.

2 October 2025

Genflow Biosciences Plc 

Subscription of New Ordinary Shares, Warrant Issue, PDMR Dealings

LONDON, UK-Genflow Biosciences Plc (LSE:GENF)(OTCQB:GENFF) ("Genflow" or "the Company"), is pleased to announce that it has raised gross proceeds of £340,000 (before expenses) via an allotment to Eric Leire of 40,000,000 new ordinary shares of £0.0003 each ("New Ordinary Shares") at an issue price of 0.85 pence (being a 35% discount to the bid price as at close of business on 1 October 2025) (the "Issue Price").

Issuance of the New Ordinary Shares                       

The Company is currently unable to issue and admit the New Ordinary Shares without either the publication of a prospectus approved by the Financial Conduct Authority ("FCA") or relying upon an exemption to the requirement to issue a prospectus.

Consequentially, this fundraise involves a subscription by Eric Leire, CEO and director of the Company, for the New Ordinary Shares at the Issue Price pursuant to the employee offer exemption under Article 1(4)(i) and 1(5) (h) of the UK Prospectus Regulation.

Following allotment of the New Ordinary Shares, Eric Leire has agreed to direct their issue to an institution, who will immediately sell these New Ordinary Shares at the same Issue Price to a purchaser identified by it (the "Purchaser").

Warrants

Concurrent with the purchase of the New Ordinary Shares, the Purchaser will receive warrants from the Company on a one-for-one basis.  These warrants will be exercisable for a period of 24 months at an exercise price of 1.2 pence ("Exercise Price").

Total Voting Rights

Application will be made for the 40,000,000 New Ordinary Shares, which will rank pari passu in all respects with the existing Ordinary Shares of the Company, to be admitted to the FCA official list and to trading on the equity shares (transition) category of the Official List maintained by the FCA and to trading on the main market for listed securities of the LSE, which is expected to occur on or around 8.00 a.m. on 9 October 2025 (the "Admission").

Upon Admission, the total number of issued shares and the total number of voting rights in the Company will be 493,547,942.

The above figure of 493,547,942 should be used by shareholders in the Company as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the share capital of the Company under the FCA's Disclosure Guidance and Transparency Rules.

Dr. Eric Leire, CEO of Genflow, commented: "We appreciate the continuing support from our US backer, and this will enable us to continue with dog study whilst awaiting the first payment of the Wallonia region grant. This financing provides Genflow with essential working capital while aligning long-term interests through the concurrent issue of warrants."

UK Market Abuse Regulation (UK MAR) Disclosure

Certain information contained in this announcement would have been inside information for the purposes of Article 7 of Regulation No 596/2014 (as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018) until the release of this announcement. The person responsible for arranging for the release of this announcement on behalf of Genflow Biosciences is Eric Leire, Chief Executive Officer.

Notification of transactions of directors, persons discharging managerial responsibilities or connected persons

Contacts

About Genflow Biosciences

Founded in 2020, Genflow Biosciences Plc. (LSE:GENF) (OTCQB:GENFF), a biotechnology company headquartered in the UK with R&D facilities in Belgium, is pioneering gene therapies to decelerate the aging process, with the goal of promoting longer and healthier lives while mitigating the financial, emotional, and social impacts of a fast-growing aging global population. Genflow's lead compound, GF-1002, works through the delivery of a centenarian variant of the SIRT6 gene which has yielded promising preclinical results. Genflow's 12-month proof-of-concept clinical trial evaluating their SIRT6-centenarian gene therapy in aged dogs began in March 2025. Other programs planned for 2025, include a clinical trial that will explore the potential benefits of GF-1002 in treating MASH (Metabolic Dysfunction-Associated Steatohepatitis), the most prevalent chronic liver disease for which there is no effective treatments. Please visit www.genflowbio.com  and follow the Company on LinkedIn and X.

DISCLAIMER

The contents of this announcement have been prepared by, and are the sole responsibility of, the Company.

This announcement may contain forward-looking statements. The forward-looking statements include, but are not limited to, statements regarding the Company's or the Directors' expectations, hopes, beliefs, intentions or strategies regarding the future. In addition, any statement that refers to projections, forecasts or other characterisations of future events or circumstances, including any underlying assumptions, is a forward-looking statement. The words "anticipate", "believe", "continue", "could", "estimate", "expect", "intend", "may", "might", "plan", "possible", "potential", "predict", "project", "seek", "should", "would" and similar expressions, or in each case their negatives, may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking.

Forward-looking statements include all matters that are not historical facts. Forward-looking statements are based on the current expectations and assumptions regarding the Company, the business, the economy and other future conditions. Because forward-looking statements relate to the future, by their nature, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Forward-looking statements are not guarantees of future performance and the Company's actual financial condition, actual results of operations and financial performance, and the development of the industries in which it operates or will operate, may differ materially from those made in or suggested by the forward-looking statements contained in this announcement. In addition, even if the Company's financial condition, results of operations and the development of the industries in which it operates or will operate, are consistent with the forward-looking statements contained in this announcement, those results or developments may not be indicative of financial condition, results of operations or developments in subsequent periods. Important factors that could cause actual results to differ materially from those in the forward-looking statements include regional, national or global, political, economic, social, business, technological, competitive, market and regulatory conditions.

Any forward-looking statement contained in this announcement applies only as of the date of this announcement and is expressly qualified in its entirety by these cautionary statements. Factors or events that could cause the Company's actual plans or results to differ may emerge from time to time, and it is not possible for the Company to predict all of them. The Company expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements contained in this announcement to reflect any change in its expectations or any change in events, conditions or circumstances on which any forward-looking statement contained in this announcement is based, unless required to do so by applicable law, the Prospectus Regulation Rules, the Listing Rules, the Disclosure Guidance and Transparency Rules of the FCA or the UK Market Abuse Regulation.