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    Barinthus Biotherapeutics plc filed SEC Form 8-K: Regulation FD Disclosure, Financial Statements and Exhibits

    12/10/25 8:05:05 AM ET
    $BRNS
    Biotechnology: Pharmaceutical Preparations
    Health Care
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    brns-20251210
    false000182818500-000000000018281852025-12-102025-12-100001828185dei:AdrMember2025-12-102025-12-100001828185us-gaap:CommonStockMember2025-12-102025-12-10

    UNITED STATES
    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549
    FORM 8-K
    CURRENT REPORT
    Pursuant to Section 13 or 15(d)
    of the Securities Exchange Act of 1934
    Date of Report (Date of earliest event reported): December 10, 2025
    BARINTHUS BIOTHERAPEUTICS PLC
    (Exact name of registrant as specified in its charter)
    England and Wales001-40367Not Applicable
    (State or other jurisdiction
    of incorporation)
    (Commission
    File Number)
    (I.R.S. Employer
    Identification No.)
    Barinthus Biotherapeutics plc
    20400 Century Blvd, Suite 210,
    Germantown, MD 20874

    (Address of principal executive offices, including zip code)
    443 917-0966
    (Registrant’s telephone number, including area code)
    Not Applicable
    (Former name or former address, if changed since last report)
    Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
    ☒Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
    oSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
    oPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
    oPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
    Securities registered pursuant to Section 12(b) of the Act:
    Title of each classTrade Symbol(s)
    Name of each exchange on which
    registered
    American Depositary SharesBRNSThe Nasdaq Global Market
    Ordinary shares, nominal value £0.000025 per share*
    Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
    Emerging growth company x
    If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
    *American Depositary Shares may be evidenced by American Depositary Receipts. Each American Depositary Share represents one (1) ordinary share. Not for trading, but only in connection with the listing of the American Depositary Shares on The Nasdaq Global Market. The American Depositary Shares represent the right to receive ordinary shares and are being registered under the Securities Act of 1933, as amended, pursuant to a separate Registration Statement on Form F-6. Accordingly, the American Depositary Shares are exempt from the operation of Section 12(a) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 12a-8.



    Item 7.01. Regulation FD Disclosure.

    On December 10, 2025, Barinthus Biotherapeutics plc (the “Company”) issued a press release titled “Barinthus Bio Announces Update on Phase 1 AVALON Clinical Trial of VTP-1000 for the Treatment of Celiac Disease.” A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

    The information in Item 7.01 of this Form 8-K (including Exhibit 99.1) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as expressly set forth by specific reference in such a filing.
    Additional Information and Where to Find It

    In connection with the proposed transaction, the combined company filed with the Securities and Exchange Commission (the “SEC”) a registration statement on Form S-4 that contains a proxy statement prospectus (the “Registration Statement”) on November 7, 2025, to register the common stock in connection with the proposed transaction and intends to mail or otherwise provide the definitive Registration Statement to the Company’s investors and security holders. THE COMPANY’S INVESTORS AND SECURITY HOLDERS ARE URGED TO CAREFULLY READ THE REGISTRATION STATEMENT IN ITS ENTIRETY WHEN IT BECOMES AVAILABLE AND ANY OTHER DOCUMENTS FILED BY THE COMPANY WITH THE SEC IN CONNECTION WITH THE PROPOSED TRANSACTION OR INCORPORATED BY REFERENCE THEREIN BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION AND THE PARTIES TO THE PROPOSED TRANSACTION.

    Investors and security holders may obtain a free copy of the Registration Statement and other documents that the combined company files with the SEC (when available) from the SEC’s website at www.sec.gov or at investors.barinthusbio.com.

    Participants in the Solicitation

    Clywedog Therapeutics Inc. (“Clywedog”), the Company and their respective directors, executive officers, other members of management, certain employees and other persons may be deemed to be participants in the solicitation of proxies from the security holders of the Company in connection with the proposed transaction. Security holders may obtain information regarding the names, affiliations and interests of the Company’s directors and executive officers in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, which was filed with the SEC on March 20, 2025, and the Company’s definitive proxy statement on Schedule 14A for its 2025 annual meeting of stockholders, which was filed with the SEC on April 25, 2025. To the extent holdings of the Company’s securities by the Company’s directors and executive officers have changed since the amounts set forth in such Annual Report on Form 10-K, such changes have been or will be reflected on subsequent Statements of Changes in Beneficial Ownership on Form 4 filed with the SEC. Additional information regarding the interests of such individuals in the proposed transaction will be included in the Registration Statement relating to the proposed transaction when it is filed with the SEC. These documents (when available) may be obtained free of charge from the SEC’s website at www.sec.gov and the Company’s website at investors.barinthusbio.com.

    No Offer or Solicitation

    This communication is not intended to and shall not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities, nor shall there be any offer, solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act, and otherwise in accordance with applicable law.
    Item 9.01. Financial Statements and Exhibits.
    (d)Exhibits
    99.1
    Press Release dated December 10, 2025.
    104Cover Page Interactive Data File (embedded within the Inline XBRL document).



    SIGNATURE
    Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
    Barinthus Biotherapeutics plc
    Date: December 10, 2025By:/s/ William Enright
    William Enright
    Chief Executive Officer

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