30 April 2026

Gulf Marine Services PLC

('Gulf Marine Services', 'GMS', 'the Company' or 'the Group')

2025 ANNUAL REPORT AND ACCOUNTS AND NOTICE OF 2026 ANNUAL GENERAL MEETING ("AGM")

The Annual Report & Accounts of the Company for the year ended 31 December 2025 ("Annual Report and Accounts") in pdf and ESEF compliant format, the AGM Notice and form of proxy are now available on the Company's website at www.gmsplc.com.  

Hard copies of the above documents will be mailed to those shareholders having elected to receive paper copies.

In compliance with UK Listing Rule 6.4.1R, the Company announces that the Annual Report and Accounts of the Company for the year ended 31 December 2025 in unedited full text, the Circular to shareholders of the Company, including Notice of the Annual General Meeting ("AGM"), and the form of proxy for use at the AGM, have been submitted to the National Storage Mechanism website and will shortly be available for inspection at:

https://data.fca.org.uk/#/nsm/nationalstoragemechanism

Annual General Meeting

The Company's AGM will be held at 2:30 pm (UAE time) on Thursday 18 June 2026 at the offices of Gulf Marine Services WLL, Office 403, International Tower, 24th Karama Street, Abu Dhabi, United Arab Emirates.

The Board recognises that the AGM is an important event for shareholders in the corporate calendar and is committed to ensuring that shareholders can exercise their right to vote and ask questions in connection with this meeting. Accordingly, for those shareholders who do not wish to or unable to attend, questions in connection with the business of the AGM can be submitted on reasonable notice by email to cosec@gmsplc.com in advance of the AGM and, in so far as relevant to the business of the meeting, questions will be responded to by email and taken into account as appropriate at the meeting itself.  We are not planning to have a Directors' presentation at the AGM and it will be held strictly to conduct the business of the AGM.

Voting at the AGM will be by way of a poll so that all the votes cast in advance by shareholders appointing the Chairman of the Meeting as their proxy to vote on their behalf can be taken into account. Shareholders have one vote for each ordinary share held when voting on a poll and this procedure ensures that every vote can be cast.

Shareholders wishing to vote on any of the matters of business at the AGM are encouraged to submit their votes as soon as possible in advance of the meeting and in any case, by 11.30am (UK time) on 16 June 2026 through the proxy and electronic voting facilities and to appoint the Chairman of the meeting as their proxy for this purpose. Further details are included in the Notice of the AGM.

The results of the AGM will be announced as soon as practical after it has taken place.

-ENDS-

Notes to Editors:

Gulf Marine Services PLC, a company listed on the London Stock Exchange, was founded in Abu Dhabi in 1977 and has

become a world‐leading provider of advanced self‐propelled self‐elevating support vessels (SESVs). The fleet serves

the offshore energy industries from its offices in the United Arab Emirates, Saudi Arabia, and Qatar. The Group's

assets are capable of serving clients' requirements across the globe, including those in the Middle East, South East

Asia, West Africa, North America, the Gulf of Mexico, and Europe.

The GMS fleet of 15 SESVs is amongst the youngest in the industry. The vessels support GMS's clients in a broad range

of offshore platform refurbishment and maintenance activities, well intervention work, and offshore wind turbine

maintenance work (which are opex‐led activities), as well as offshore platform installation and decommissioning and

offshore wind turbine installation (which are capex‐led activities).

The SESVs are categorised by size ‐ K‐Class (Small), S‐Class (Mid), and E‐Class (Large) ‐ with these capable of operating

in water depths of 45m to 80m depending on leg length. The vessels are four‐legged and are self‐propelled, which

means they do not require tugs or similar support vessels for moves between locations in the field; this makes them

significantly more cost‐effective and time‐efficient than conventional offshore support vessels without self propulsion.

They have a large deck space, crane capacity, and accommodation facilities (for up to 300 people) that

can be adapted to the requirements of the Group's clients.

Gulf Marine Services PLC's Legal Entity Identifier is 213800IGS2QE89SAJF77

www.gmsplc.com

Disclaimer

The content of the Gulf Marine Services PLC website should not be considered to form a part of or be incorporated into this announcement.