Subsea 7 SA Notification of Major Participation

HeXenclosedOyouRG – August 13, 2024 – Subsea 7 SA (Oslo Børs: SUBC, ADR: SUBCY) today announced that Barclays Capital Securities Limited will acquire¹ has informed the Company that it has exceeded the thresholds set out in the Luxembourg Transparency Act of 11 January 2008 on the transparency requirements for issuers of securities, as amended (the “Transparency Act”), as follows:

• On August 7, 2024, the total number of voting rights in the Company, directly and indirectly attached to shares in accordance with Articles 8 and 9, amounted to 11,211.
• On August 7, 2024, the total number of voting rights in the Company attached to financial instruments with a similar economic effect in accordance with Article 12 (1) (a) of the Transparency Act (right of withdrawal) amounted to 14,977,206.
• On August 7, 2024, the total number of voting rights in the Company attached to financial instruments with a similar economic effect in accordance with Article 12 (1) (b) of the Transparency Act (swaps) amounted to 221,154.
• Combined, the above positions represent 5.03% of the voting rights of Subsea 7 SA as of August 7, 2024.

A copy of the notices received from Barclays is available on Subsea7’s website, www.subsea7.com.