THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED IN IT ARE NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN, INTO OR FROM, THE UNITED STATES OF AMERICA (INCLUDING ITS TERRITORIES AND POSSESSIONS, ANY STATE OF THE UNITED STATES AND THE DISTRICT OF COLUMBIA), AUSTRALIA, CANADA, JAPAN, THE REPUBLIC OF SOUTH AFRICA OR ANY OTHER JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION.

FOR IMMEDIATE RELEASE

Legal Entity Identifier: 213800OVT3AHQCXNIX43

29 January 2024

RECOMMENDED ALL-SHARE ACQUISITION OF THE ASSETS OF

ARIX BIOSCIENCE PLC ("Arix")

BY

RTW BIOTECH OPPORTUNITIES LTD ("RTW Bio")

Results of First General Meeting

On 1 November 2023, the boards of RTW Bio and Arix announced (the "Original Announcement") that they had agreed to the terms of a recommended all-share acquisition of Arix's assets by RTW Bio, via a subsidiary, to be effected through a scheme of reconstruction and the voluntary winding-up of Arix under section 110 of the Insolvency Act 1986 (the "Scheme").

In connection with the Scheme, the Board is pleased to announce that at the First General Meeting held earlier today, the Resolution proposed (which was proposed as a special resolution) to, among other things, approve the Scheme, authorise the Board and the Liquidators (conditional on their appointment) to implement the Scheme and do all things necessary for the purpose of carrying the Scheme into effect, empower the Liquidators (conditional upon their appointment) to accept the Consideration Shares for distribution to eligible Shareholders and apply to delist the Shares, and, conditional upon the Scheme becoming effective, amend the Articles to give effect to the Scheme, was passed by the requisite majority of Shareholders.

The full text of the Resolution is set out in the notice of the First General Meeting contained in the circular published by Arix on 5 January 2024 in connection with the Scheme (the "Circular"). The Circular is available on Arix's website at https://arixbioscience.com/investor-relations.

Number of votes cast at the General Meeting

The results of the poll on the Resolution proposed at the First General Meeting held on 29 January 2024 were as follows:

Votes "For" and "Against" are expressed as a percentage of the total votes received.

All percentages rounded to two decimal places.

\* The votes "For" include those votes giving the Chairman discretion.

** "Votes Withheld" are not a vote in law and have not been counted in the calculation of the "Votes For" and "Votes Against" the Resolution or the total number of votes validly cast.

A copy of the Resolution passed at the First General Meeting will be submitted to the National Storage Mechanism and will be available for inspection at: https://data.fca.org.uk/#/nsm/nationalstoragemechanism. The voting results will also shortly be available on Arix's website at https://arixbioscience.com/investor-relations.

Next Steps

As further detailed in the Circular, completion of the Scheme remains subject to, amongst other things,  the passing of the Resolution to be proposed at the Second General Meeting.

The Second General Meeting will be held at Clifford Chance LLP, 10 Upper Bank Street, London, E14 5JJ at 10.00 a.m. on 12 February 2024.

Shareholders are requested to complete, sign and return the form of proxy for the Second General Meeting, or appoint a proxy through the CREST electronic proxy appointment service (as appropriate), as soon as possible and in any event by 10.00 a.m. on 8 February 2024 (being the latest time and date for receipt of forms of proxy for the Second General Meeting). Further details on the action to be taken by Shareholders are set out in the notice of the Second General Meeting contained in the circular published by Arix on 23 January 2024 in connection with the Scheme.

The Resolution to be considered at the Second General Meeting (which will be proposed as a special resolution) will, if passed, place the Company into members' voluntary liquidation, appoint the Liquidators and authorise the Liquidators to exercise certain powers for which the express sanction of Shareholders is required. The Resolution to be proposed at the Second General Meeting will require the approval of at least 75 per cent. of the votes cast in respect of it.

Capitalised terms used but not defined in this announcement have the meanings given to them in the Circular.

Enquiries:

Important information

Jefferies International Limited ("Jefferies"), which is authorised and regulated by the Financial Conduct Authority in the United Kingdom, is acting exclusively for Arix and no one else in connection with the matters set out in this announcement and will not regard any other person as its client in relation to the matters in this announcement and will not be responsible to anyone other than Arix for providing the protections afforded to clients of Jefferies nor for providing advice in relation to any matter referred to in this announcement or any transaction or arrangement referred to herein. Neither Jefferies nor any of its affiliates owes or accepts any duty, liability or responsibility whatsoever (whether direct or indirect, whether in contract, in tort, under statute or otherwise) to any person who is not a client of Jefferies in connection with this announcement, any statement contained herein, any transaction or arrangement referred to herein, or otherwise.

Notice to US Shareholders in Arix

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 U.S. Securities of 1933, as amended (the "Securities Act"), any state securities laws or the securities laws of any other jurisdiction and may not be offered or sold in the United States or to any "U.S. persons" (as defined in Rule 902 under the Securities Act), except pursuant to an applicable exemption from registration. No public offering of securities is being made in the United States.

The Consideration Shares will be offered and sold for investment purposes only in the United States or to U.S. Persons (as such terms are defined in Rule 902 of Regulation S promulgated under the Securities Act) under the exemption from registration provided by Section 4(a)(2) of the Securities Act and/or Regulation D promulgated thereunder and in compliance with the applicable securities laws of each state or other jurisdiction in which the offering will be made. Each prospective investor that is within the United States or that is a U.S. Person (as such term is defined in Rule 902 of Regulation S promulgated under the Securities Act) must be both (i) an "accredited investor" as defined in Rule 501(a) of Regulation D of the Securities Act and (ii) a (A) "qualified purchaser" as the term is defined under Section 2(a)(51) of the U.S. Investment Company Act of 1940, as amended (the "1940 Act"), and the rules and regulations promulgated thereunder or (B) "knowledgeable employee" as such term is defined in Rule 3c-5(a)(4) promulgated under the 1940 Act. Consideration Shares will be offered and sold outside of the United States to investors that are not U.S. Persons in accordance with Regulation S under the Securities Act.

RTW Bio is not registered, and does not intend to be subject to registration, as an investment company under the 1940 Act in reliance upon one or more exclusions or exemptions from registration thereunder. U.S. Shareholders of Arix will be requested to execute an investor letter ("AI/QP Investor Letter"). AI/QP Investor Letters will contain representations and restrictions on transfer designed to assure that the conditions of such exclusions or exemptions will be met. Investors in RTW Bio will therefore not receive the protections afforded by the 1940 Act to investors in a registered investment company. RTW Bio will not make a public offering of the Consideration Shares to satisfy the exclusion from registration as an investment company under the 1940 Act. If RTW Bio is deemed to be an investment company and therefore is required to register under the 1940 Act, such requirement could prohibit RTW Bio from operating in its intended manner and could have a material adverse effect on RTW Bio.

The Consideration Shares are subject to restrictions on transferability and resale and may not be transferred or resold except as permitted under the Securities Act, the 1940 Act and any applicable state and other securities laws, pursuant to registration or an exclusion or exemption therefrom. The transferability of the Consideration Shares will be further restricted by the terms of the AI/QP Investor Letter, and any re-offer or resale of any Consideration Shares in the United States or to U.S. Persons may constitute a violation of U.S. law. U.S. Shareholders of Arix should be aware that they may be required to bear the financial risks of any investment in RTW Bio for an indefinite period of time. RTW Bio reserves the right to refuse to accept any subscriptions, resales or other transfers of Consideration Shares to U.S. Persons or to any person, including on the basis that doing so would risk RTW Bio's loss of an exclusion or exemption under U.S. securities laws (e.g., the Securities Act and the 1940 Act). RTW Bio further reserves the right to require the transfer or redemption of Consideration Shares held by any person for any reason, including circumstances that may prejudice the tax status of RTW Bio, may cause RTW Bio to be in violation of the Securities Act, the 1940 Act or any applicable state securities act or may cause RTW Bio to suffer any pecuniary, fiscal or administrative disadvantage which may be unlawful or detrimental to the interests or well-being of RTW Bio.

General

If you are in any doubt about the contents of this announcement or the action you should take, you are recommended to seek your own independent financial advice immediately from your stockbroker, bank manager, solicitor or independent financial adviser duly authorised under the Financial Services and Markets Act 2000 (as amended) if you are resident in the United Kingdom or, if not, from another appropriate authorised independent financial adviser.