Subsea 7

Environmental & Social Information • Dec 12, 2024

Seaway7 signs vessel reservation agreement for UK offshore wind farm

Luxembourg - 11 December 2024 - Subsea 7 S.A. (Oslo Børs: SUBC, ADR: SUBCY) today announced that Seaway7, part of the Subsea7 Group, has signed a vessel reservation agreement with Dogger Bank Offshore Wind Farm} for the transportation and installation of turbines for the Dogger Bank project, offshore the UK. Offshore works are expected to commence in 2026.

This represents additional work for Seaway7 at this development, where it is currently installing monopile foundations and transition pieces.

The value related to this substantial? agreement will be recognised in backlog in the fourth quarter.

• 1. Dogger Bank Offshore Wwind Farm is a joint venture partnership between SSE Renewables (40%), and Vărgrønn (20%).
• 1. Subsea7 defines a substantial contract as being between \$150 million and \$300 million

****************************************************************************************************************************************************************************** Subsea7 is a global leader in the delivery of offshore projects and services for the evolving energy industry, creating sustainable value by being the industry's partner and employer of choice in delivering the efficient offshore solutions the world needs.

Subsea7 is listed on the Oslo Børs (SUBC), ISIN LU0075646355, LEI 222100AIF0CBCY80AH62.

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Contact for investment community enquiries:

Katherine Tonks Investor Relations Director Tel +44 20 8210 5568 ir@subsea7.com

Contact for media enquiries:

Nikki Beales Communications Manager, Seaway7 Tel +44 (0)7843895292 nikki.beales@seaway7.com www.seaway7.com

Forward-Looking Statements: This document may contain 'forward-looking statements' (within the meaning of the safe harbour provisions of the U.S. Private Securities Litigation Reform Act of 1995). These statements relate to our current expectations, beliefs, intentions, assumptions or strategies regarding the future and and unknown risks that could cause actual results, performance or events to differ materially from those expressed or implied in these statements may be identified by the use of words such as നിഷേധം 17 ന് expressions. The principal risks which ould affect future operations of the 'Risk Management' section of the Group's Annual Report and Consolidated Financial Statements. Factors that may cause and trends to differ materially from our forward-looking statements include (but are not limited to): (i) our ability to deliver fixed price with dient expectations and within the parameters of our bids, and to avoid cost overruns; (ii) our ability to collect receivables and collect the related revenue; (ii) our ability to recover costs on significant projects; (iv) capital expenditure by oil and gas companies, which is affected by fluctuations in the price of, and demand for, crude oil and natural gas; (v) unanticipated delays or cancellation of projects included in our backlog; (vi) competition and price fluctuations in the markets in which we operate; (vil) the loss of, or deteriorship with, any significant clients; (vii) the outcome of legal proceedings or governmental inquiries; inherent in operating internationally, including economic, political and social instability, boycotts or embarges in foreign governmental regulations, corruption and currency fluctuations; (x) the effects of a natural disaster; (xi) liability to third parties for the failure of our joint venture partners to fulfil their obligations; (xii) changes in, or our failure to comply with, applicable laws and regulations (including regulatory measures addressing dimi) operating hazards, including spills, environmental damage, personal or property damage and business interruptions caused by adverse weather; ( x i ) equipment or mechanical failures, which could increase costs, impair revenue and result in penalties for failure to meet projection requirements; (xv) the timely delivery of vessels on order and the timely completion of ship conversion programmes; (xvi) our ability to keep pace with technological changes and the impact of potential information technology, cyber security or data security breaches; (xvi) global availability of suitable alternative vesselfuels; and (xvii) the effectiveness of our disclosure controls and internal control over financial reporting. Many of these factors are beyond our ability to control or predict. Given these you should not place undue reliance on the forward-looking statements. Each forwardlooking statement speaks only as of this document. We undertake no obligation to update publicly or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

This information is considered to be inside information pursuant to the EU Market Abuse Regulation and is subject to the disclosure requirements pursuant to Section 5-12 the Norwegian Securities Trading Act.

This stock exchange release was published by Katherine Tonks, Investor Relations, Subsea7, on 11 December 2024 at 23:00 CET.