WRAP Retail Offer for up to £100,000

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, OR INTO OR WITHIN THE UNITED STATES, AUSTRALIA, NEW ZEALAND, CANADA, SOUTH AFRICA OR JAPAN, OR ANY MEMBER STATE OF THE EEA, OR ANY OTHER JURISDICTION WHERE, OR TO ANY OTHER PERSON TO WHOM, TO DO SO MIGHT CONSTITUTE A VIOLATION OR BREACH OF ANY APPLICABLE LAW OR REGULATION. PLEASE SEE THE IMPORTANT NOTICE AT THE END OF THIS ANNOUNCEMENT.

THE COMMUNICATION OF THIS ANNOUNCEMENT AND ANY OTHER DOCUMENTS OR MATERIALS RELATING TO THE WRAP RETAIL OFFER AS A FINANCIAL PROMOTION IS ONLY BEING MADE TO, AND MAY ONLY BE ACTED UPON BY, THOSE PERSONS IN THE UNITED KINGDOM FALLING WITHIN ARTICLE 43 OF THE FINANCIAL SERVICES AND MARKETS ACT 2000 (FINANCIAL PROMOTION) ORDER 2005, AS AMENDED (WHICH INCLUDES AN EXISTING MEMBER OF SAREUM HOLDINGS PLC).  ANY INVESTMENT OR INVESTMENT ACTIVITY TO WHICH THIS ANNOUNCEMENT RELATES IS AVAILABLE ONLY TO SUCH PERSONS AND WILL BE ENGAGED IN ONLY WITH SUCH PERSONS. THIS ANNOUNCEMENT IS FOR INFORMATIONAL PURPOSES ONLY, AND DOES NOT CONSTITUTE OR FORM PART OF ANY OFFER OR INVITATION TO SELL OR ISSUE, OR ANY SOLICITATION OF AN OFFER TO PURCHASE OR SUBSCRIBE FOR, ANY SECURITIES OF SAREUM HOLDINGS PLC). 

26th October 2026

Sareum Holdings PLC

(“Sareum” or the “Company”)

WRAP Retail Offer for up to £100,000

Sareum Holdings PLC (AIM: SAR), a clinical-stage biotechnology company developing next-generation kinase inhibitors for autoimmune disease and cancer, is pleased to announce a retail offer via the Winterflood Retail Access Platform (“WRAP”) to raise up to £100,000 (the “Retail Offer”) through the issue of new ordinary shares of 1.25 pence each in the capital of the Company (“Ordinary Shares”).  Under the Retail Offer up to 714,285 new Ordinary Shares (the “Retail Offer Shares”) will be made available at a price of £0.14 per share (the “Issue Price”).

In addition to the Retail Offer and as announced earlier today, the Company has announced a subscription of 22,807,143 new Ordinary Shares (the “Subscription Shares” and together with the Retail Offer Shares, the “New Ordinary Shares”) to raise approximately £3.2 million (before expenses) (the “Subscription”) at a price of £0.14 per Subscription Share (the “Subscription Price”). This earlier announcement sets out the reasons for the Subscription and the intended use of proceeds for both the Subscription and the WRAP Retail Offer (together, the “Fundraising”). The issue price of the WRAP Retail Offer Shares is equal to the Subscription Price. The Retail Offer Shares will not carry the warrants attaching to the Subscription Shares.

For the avoidance of doubt, the Retail Offer is not part of the Subscription. Completion of the Retail Offer is conditional, inter alia, upon the completion of the Subscription but completion of the Subscription is not conditional on the completion of the Retail Offer.

The Retail Offer is conditional on the New Ordinary Shares being admitted to trading on the AIM Market (“AIM”) of the London Stock Exchange plc (“Admission”). It is anticipated that Admission will become effective and that dealings in the New Ordinary Shares will commence on AIM at 8.00 a.m. on 29th October 2026.

Expected Timetable in relation to the Retail Offer

WRAP Retail Offer

The Company values its retail shareholder base and believes that it is appropriate to provide its existing retail shareholders in the United Kingdom the opportunity to participate in the Retail Offer.

Therefore, the Company is making the Retail Offer available to eligible investors in the United Kingdom following release of this announcement through certain financial intermediaries.

Existing shareholders can contact their broker or wealth manager to participate in the Retail Offer.

Retail brokers wishing to participate in the Retail Offer on behalf of eligible retail investors, should contact [email protected].

The Retail Offer is expected to close at 16:30 on 27th October 2026. Eligible retail investors should note that financial intermediaries may have earlier closing times. The result of the Retail Offer is expected to be announced by the Company on or around 28th October 2026.

To be eligible to participate in the Retail Offer, applicants must be a customer of a participating intermediary and, prior to the release of this announcement, shareholders in the Company which may include individuals aged 18 years or over, companies and other bodies corporate, partnerships, trusts, associations and other unincorporated organisations.

There is a minimum subscription of £100 per investor under the Retail Offer. The terms and conditions on which investors subscribe will be provided by the relevant financial intermediaries including relevant commission or fee charges.

The Company reserves the right to amend the size and timings of the retail offer at its discretion. The Company reserves the right to scale back any order and to reject any application for subscription under the Retail Offer without giving any reason for such rejection.

It is vital to note that once an application for Retail Offer Shares has been made and accepted via an intermediary, it cannot be withdrawn.

The Retail Offer Shares will, when issued, be credited as fully paid, and will rank pari passu in all respects with existing Ordinary Shares, including the right to receive all dividends and other distributions declared, made or paid after their date of issue.

Investors should make their own investigations into the merits of an investment in the Company. Nothing in this announcement amounts to a recommendation to invest in the Company or amounts to investment, taxation or legal advice.

It should be noted that a subscription for Ordinary Shares and investment in the Company carries a number of risks, including the risk that investors may lose their entire investment. Investors should take independent advice from a person experienced in advising on investment in securities such as the Ordinary Shares if they are in any doubt.

An investment in the Company will place capital at risk. The value of investments, and any income, can go down as well as up, so investors could get back less than the amount invested.

Neither past performance nor any forecasts should be considered a reliable indicator of future results.

The Retail Offer is offered in the United Kingdom under an exception from prohibitions on offers to the public pursuant to paragraph 6 of Part 1 of Schedule 1 to The Public Offers and Admissions to Trading Regulations 2024, as an offer conditional on admission of the Retail Offer Shares to trading on AIM, a primary multilateral trading facility. The Retail Offer is not being made into any jurisdiction other than the United Kingdom.

No offering document, prospectus or admission document has been or will be prepared or submitted to be approved by the Financial Conduct Authority (or any other authority) in relation to the Retail Offer, and investors' commitments will be made solely on the basis of the information contained in this announcement and information that has been published by or on behalf of the Company prior to the date of this announcement by notification to a Regulatory Information Service in accordance with the Financial Conduct Authority's Disclosure Guidance and Transparency Rules, the UK Market Abuse Regulation (EU Regulation No. 596/2014) as it forms part of United Kingdom law by virtue of the European Union (Withdrawal) Act 2018 (as amended) ("UK MAR").

For further information:

Further information on the Company can be found on its website at www.sareum.com

The Company's LEI is 213800PKERN2DY8FFM72.

This announcement should be read in its entirety. In particular, the information in the “Important Notices” section of the announcement should be read and understood.

Important Notices

This announcement has been prepared by and is the sole responsibility of the Company.

The release, publication or distribution of this announcement may be restricted by law in certain jurisdictions and persons into whose possession any document or other information referred to herein comes should inform themselves about and observe any such restriction. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction.

This announcement and the information contained herein is not for release, publication or distribution, directly or indirectly, in whole or in part, in or into or from the United States (including its territories and possessions, any state of the United States and the District of Columbia (the “United States” or “US”)), Australia, Canada, New Zealand, Japan, the Republic of South Africa, any member state of the EEA or any other jurisdiction where to do so might constitute a violation of the relevant laws or regulations of such jurisdiction. This announcement does not constitute an offer to sell or issue or a solicitation of an offer to buy or subscribe for Ordinary Shares in any such jurisdiction.

This announcement is not for publication or distribution, directly or indirectly, in or into the United States of America.  This announcement is not an offer of securities for sale into the United States.  The securities referred to herein have not been and will not be registered under the US Securities Act, and may not be offered or sold in the United States, except pursuant to an applicable exemption from registration.  No public offering of securities is being made in the United States.

WRAP is a proprietary technology platform owned and operated by Marex Financial (“MF”). MF is incorporated under the laws of England and Wales (company no. 5613061, LEI no. 5493003EETVWYSIJ5A20 and VAT registration no. GB 872 8106 13) and is authorised and regulated by the Financial Conduct Authority (FCA registration number 442767). MF’s registered address is at 155 Bishopsgate, London, EC2M 3TQ. MF is acting exclusively for the Company and for no-one else and will not regard any other person (whether or not a recipient of this announcement) as its client in relation to the Retail Offer and will not be responsible to anyone other than the Company for providing the protections afforded to its clients, nor for providing advice in connection with the Retail Offer, Admission and the other arrangements referred to in this announcement.

The value of Ordinary Shares and the income from them is not guaranteed and can fall as well as rise due to stock market movements. When you sell your investment, you may get back less than you originally invested. Figures refer to past performance and past performance is not a reliable indicator of future results. Returns may increase or decrease as a result of currency fluctuations.

Certain statements in this announcement may constitute forward-looking statements which are based on the Company's expectations, intentions and projections regarding its future performance, anticipated events or trends and other matters that are not historical facts. These forward-looking statements, which may use words such as “aim”, “anticipate”, “believe”, “intend”, “estimate”, “expect” and words of similar meaning, include all matters that are not historical facts. These forward-looking statements involve risks, assumptions and uncertainties that could cause the actual results of operations, financial condition, liquidity and dividend policy and the development of the industries in which the Company's businesses operate to differ materially from the impression created by the forward-looking statements. These statements are not guarantees of future performance and are subject to known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements. Given those risks and uncertainties, prospective investors are cautioned not to place undue reliance on forward-looking statements.

These forward-looking statements speak only as at the date of this announcement and cannot be relied upon as a guide to future performance. The Company and MF expressly disclaim any obligation or undertaking to update or revise any forward-looking statements contained herein to reflect actual results or any change in the assumptions, conditions or circumstances on which any such statements are based unless required to do so by the FCA, the London Stock Exchange or applicable law.

The information in this announcement is for background purposes only and does not purport to be full or complete. Neither MF nor any of its affiliates, accepts any responsibility or liability whatsoever for, or makes any representation or warranty, express or implied, as to this announcement, including the truth, accuracy or completeness of the information in this announcement (or whether any information has been omitted from the announcement) or any other information relating to the Company or associated companies, whether written, oral or in a visual or electronic form, and howsoever transmitted or made available or for any loss howsoever arising from any use of the announcement or its contents or otherwise arising in connection therewith. MF and its affiliates, accordingly disclaim all and any liability whether arising in tort, contract or otherwise which they might otherwise be found to have in respect of this announcement or its contents or otherwise arising in connection therewith.

Any indication in this announcement of the price at which the Ordinary Shares have been bought or sold in the past cannot be relied upon as a guide to future performance. Persons needing advice should consult an independent financial adviser. No statement in this announcement is intended to be a profit forecast and no statement in this announcement should be interpreted to mean that earnings or target dividend per share of the Company for the current or future financial years would necessarily match or exceed the historical published earnings or dividends per share of the Company.

Neither the content of the Company's website (or any other website) nor the content of any website accessible from hyperlinks on the Company's website (or any other website) is incorporated into or forms part of this announcement. The Retail Offer Shares to be issued pursuant to the Retail Offer will not be admitted to trading on any stock exchange other than the London Stock Exchange.

Strand Hanson Limited (the “NOMAD”), which is authorised and regulated by the FCA in the United Kingdom, is acting as Nominated Adviser to the Company. The NOMAD has not authorised the contents of, or any part of, this announcement, and no liability whatsoever is accepted by the NOMAD for the accuracy of any information or opinions contained in this announcement or for the omission of any material information. The responsibilities of the NOMAD as the Company's Nominated Adviser under the AIM Rules for Companies and the AIM Rules for Nominated Advisers are owed solely to London Stock Exchange plc and are not owed to the Company or to any director or shareholder of the Company or any other person, in respect of its decision to acquire shares in the capital of the Company in reliance on any part of this announcement, or otherwise.

UK Product Governance Requirements

Solely for the purposes of the product governance requirements of Chapter 3 of the FCA Handbook Product Intervention and Product Governance Sourcebook (the "UK MiFIR Product Governance Requirements"), and disclaiming all and any liability, whether arising in tort, contract or otherwise, which any "manufacturer" (for the purposes of the UK MiFIR Product Governance Requirements) may otherwise have with respect thereto, the Retail Offer Shares have been subject to a product approval process, which has determined that the Retail Offer Shares are: (i) compatible with an end target market of retail investors and investors who meet the criteria of professional clients and eligible counterparties, each as defined in paragraphs 3.5 and 3.6 of COBS; and (ii) eligible for distribution through all permitted distribution channels (the "Target Market Assessment"). Notwithstanding the Target Market Assessment, distributors should note that: the price of the Retail Offer Shares may decline and investors could lose all or part of their investment; the Retail Offer Shares offer no guaranteed income and no capital protection; and an investment in the Retail Offer Shares is compatible only with investors who do not need a guaranteed income or capital protection, who (either alone or in conjunction with an appropriate financial or other adviser) are capable of evaluating the merits and risks of such an investment and who have sufficient resources to be able to bear any losses that may result therefrom. The Target Market Assessment is without prejudice to any contractual, legal or regulatory selling restrictions in relation to the Retail Offer.

For the avoidance of doubt, the Target Market Assessment does not constitute: (a) an assessment of suitability or appropriateness for the purposes of Chapters 9A or 10A respectively of COBS; or (b) a recommendation to any investor or group of investors to invest in, or purchase, or take any other action whatsoever with respect to the Retail Offer Shares. Each distributor is responsible for undertaking its own target market assessment in respect of the Retail Offer Shares and determining appropriate distribution channels