CADELER A/S: NOTIFICATION OF MAJOR SHAREHOLDING

Copenhagen, December 1, 2025: Cadeler A/S ("Cadeler") hereby announces that ithas received the following major shareholder notification pursuant to Section38of the Danish Capital Markets Act and Section 55 of the Danish Companies Act,respectively, regarding direct and indirect holdings of shares in Cadeler.BW Altor Pte. Ltd.'s direct shareholding in Cadeler has changed in connectionwith BW Altor Pte. Ltd.'s purchase of 17,510,330 shares in Cadeler on 27November 2025.As a consequence thereof, BW Altor held beneficial ownership, as of 27November2025, of 96,005,852 Cadeler shares of a nominal value of DKK 1 each,corresponding to 27.36% (latest major shareholder notification was made at20.41%) of Cadeler's total share capital and voting rights.BW Altor Pte. Ltd. is a limited liability company organised under the laws ofThe Republic of Singapore under the registration number 202035228G with itsregistered address at 10 Pasir Panjang Road #18-01, Mapletree Business City,Singapore 117438. BW Altor Pte. Ltd. is ultimately controlled by AndreasSohmen-Pao.For further information, please contact:Mikkel GleerupCEO, Cadeler +45 3246 3102 mikkel.gleerup@cadeler.comAlexander SimmondsEVP & CLO, Cadeler+44 7376 174172Alexander.simmonds@cadeler.comAbout Cadeler A/S:Cadeler is a global leader in offshore wind installation, operations, andmaintenance services. Cadeler is a pure play company, operating solely in theoffshore wind industry with an uncompromising focus on safety and theenvironment. Cadeler owns and operates the industry's largest fleet of jack-upoffshore wind installation vessels and has for more than 10 years been a keysupplier in the development of offshore wind energy to power millions ofhouseholds. Cadeler's fleet, expertise and capacity to handle the largest andmost complex next-generation offshore wind installation projects positions thecompany to deliver exceptional services to the industry. Cadeler is committedtobeing at the forefront of sustainable wind farm installation, enabling theglobal energy transition towards a future built on renewable energy. Cadelerislisted on the New York Stock Exchange (ticker: CDLR) and the Oslo StockExchange(ticker: CADLR).For more information, please visit www.cadeler.comhttps://newsweb.oslobors.no/message/660991