THIS ANNOUNCEMENT AND THE INFORMATION CONTAINED HEREIN IS NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO THE UNITED STATES, AUSTRALIA, CANADA, THE REPUBLIC OF SOUTH AFRICA, JAPAN, ANY MEMBER STATE OF THE EUROPEAN ECONOMIC AREA OR ANY JURISDICTION IN WHICH IT WOULD BE UNLAWFUL TO DO SO.

LEI number: 254900YT8SO8JT2LGD15

28 July 2025

Marwyn Acquisition Company III Limited

(the "Company")

Adoption of New Constitution

In anticipation of the expiry of the transitional provisions of the UK Listing Rules ("UKLRs") on 29 July 2025 (which have applied to the Company as a shell company since 29 July 2024 (the "Transition Period")), the Company announces the adoption of a revised memorandum and articles of association of the Company (the "New Constitution").

The New Constitution has been prepared in accordance with the requirements of UKLR13.2.1, which will apply to the Company following the expiry of the Transition Period. UKLR13.2.1 primarily requires that the Company's constitution includes a requirement that it will cease operations if it has not completed an Initial Transaction (as defined in UKLR13) within a 24-month period from 30 July 2025 (the "Initial Transaction Deadline"). The New Constitution also provides that (as permitted by the UKLRs) the Initial Transaction Deadline may be extended by shareholder approval for up to three further 12-month periods (plus a further six months in certain circumstances if an incomplete Initial Transaction is in progress).

The Company therefore currently expects that, if an Initial Transaction has not been completed on or before July 2027, an initial shareholder vote will be proposed on or before July 2027 in order to seek an extension to the Initial Transaction Deadline.

The complete text of the New Constitution is available for review on the Company's website at https://marwynac3.com/ and at the Company's registered office.

Enquiries:

Company Secretary

Antoinette Vanderpuije -  +44(0)207 004 2700

Further information on the Company can be found on its website at https://marwynac3.com/. Neither the content of the Company's website, nor the content on any website accessible from hyperlinks on its website or any other website, is incorporated into, or forms part of, this announcement nor, unless previously published by means of a recognised information service, should any such content be relied upon in reaching a decision as to whether or not to acquire, continue to hold, or dispose of, securities in the Company.