NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF SUCH JURISDICTION.

FOR IMMEDIATE RELEASE

22 January 2026

Oxford Biomedica plc ("OXB" or the "Company")

Rule 2.9 Announcement

In accordance with Rule 2.9 of the City Code on Takeovers and Mergers (the "Code"), the Company confirms that, as at close of business on 21 January 2026, its issued share capital consisted of 120,809,814 ordinary shares of £0.50 each, each carrying one vote ("Ordinary Shares"). There are no Ordinary Shares held in treasury.

The International Securities Identification Number for the Ordinary Shares is GB00BDFBVT43.

Enquiries:

IMPORTANT NOTICES

Evercore Partners International LLP ("Evercore"), which is authorised and regulated by the Financial Conduct Authority ("FCA") in the UK, is acting exclusively as financial adviser to OXB and no one else in connection with the matters described in this announcement and will not be responsible to anyone other than OXB for providing the protections afforded to clients of Evercore nor for providing advice in connection with the matters referred to herein. Neither Evercore nor any of its subsidiaries, branches or 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 Evercore in connection with this announcement, any statement contained herein, any offer or otherwise. Apart from the responsibilities and liabilities, if any, which may be imposed on Evercore by the Financial Services and Markets Act 2000, or the regulatory regime established thereunder, or under the regulatory regime of any jurisdiction where exclusion of liability under the relevant regulatory regime would be illegal, void or unenforceable, neither Evercore nor any of its affiliates accepts any responsibility or liability whatsoever for the contents of this announcement, and no representation, express or implied, is made by it, or purported to be made on its behalf, in relation to the contents of this announcement, including its accuracy, completeness or verification of any other statement made or purported to be made by it, or on its behalf, in connection with OXB or the matters described in this announcement. To the fullest extent permitted by applicable law, Evercore and its affiliates accordingly disclaim all and any responsibility or liability whether arising in tort, contract or otherwise (save as referred to above) which they might otherwise have in respect of this announcement, or any statement contained herein.

Jefferies International Limited ("Jefferies"), which is authorised and regulated by the FCA in the UK, is acting exclusively as financial adviser to OXB and no one else in connection with the matters described 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 OXB for providing the protections afforded to clients of Jefferies nor for providing advice in relation to any matter referred to in this announcement. Neither Jefferies nor any of its affiliates (nor their respective directors, officers, employees or agents) 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 or otherwise.

The person responsible for arranging for the release of this announcement on behalf of OXB is Natalie Walter, Chief Legal Officer and Company Secretary.

DISCLOSURE REQUIREMENTS OF THE CITY CODE ON TAKEOVERS AND MERGERS (THE "CODE")

Under Rule 8.3(a) of the Code, any person who is interested in 1 per cent. or more of any class of relevant securities of an offeree company or of any securities exchange offeror (being any offeror other than an offeror in respect of which it has been announced that its offer is, or is likely to be, solely in cash) must make an Opening Position Disclosure following the commencement of the offer period and, if later, following the announcement in which any securities exchange offeror is first identified.

An Opening Position Disclosure must contain details of the person's interests and short positions in, and rights to subscribe for, any relevant securities of each of (i) the offeree company and (ii) any securities exchange offeror(s). An Opening Position Disclosure by a person to whom Rule 8.3(a) applies must be made by not later than 3.30 pm (London time) on the 10^th business day following the commencement of the offer period and, if appropriate, by not later than 3.30 pm (London time) on the 10^th business day following the announcement in which any securities exchange offeror is first identified. Relevant persons who deal in the relevant securities of the offeree company or of a securities exchange offeror prior to the deadline for making an Opening Position Disclosure must instead make a Dealing Disclosure.

Under Rule 8.3(b) of the Code, any person who is, or becomes, interested in 1 per cent. or more of any class of relevant securities of the offeree company or of any securities exchange offeror must make a Dealing Disclosure if the person deals in any relevant securities of the offeree company or of any securities exchange offeror. A Dealing Disclosure must contain details of the dealing concerned and of the person's interests and short positions in, and rights to subscribe for, any relevant securities of each of (i) the offeree company and (ii) any securities exchange offeror(s), save to the extent that these details have previously been disclosed under Rule 8. A Dealing Disclosure by a person to whom Rule 8.3(b) applies must be made by not later than 3.30 pm (London time) on the business day following the date of the relevant dealing.

If two or more persons act together pursuant to an agreement or understanding, whether formal or informal, to acquire or control an interest in relevant securities of an offeree company or a securities exchange offeror, they will be deemed to be a single person for the purpose of Rule 8.3.

Opening Position Disclosures must also be made by the offeree company and by any offeror and Dealing Disclosures must also be made by the offeree company, by any offeror and by any persons acting in concert with any of them (see Rules 8.1, 8.2 and 8.4 of the Code).

Details of the offeree and offeror companies in respect of whose relevant securities Opening Position Disclosures and Dealing Disclosures must be made can be found in the Disclosure Table on the Takeover Panel's website at www.thetakeoverpanel.org.uk, including details of the number of relevant securities in issue, when the offer period commenced and when any offeror was first identified. You should contact the Panel's Market Surveillance Unit on +44 (0)20 7638 0129 if you are in any doubt as to whether you are required to make an Opening Position Disclosure or a Dealing Disclosure.