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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

X0202 SCHEDULE 13D/A 0002057227 XXXXXXXX LIVE 4 Ordinary Shares, with a nominal value of DKK 1.00 per share 03/27/2026 false 0001978867 12738K109 Cadeler A/S KALVEBOD BRYGGE 43 COPENHAGEN V G7 DK-1560 Nicholas Fell 65 (0) 6434 5818 BW Maritime Pte. Ltd. #18-01, 10 Pasir Panjang Road Mapletree Business City U0 117438 0002057227 N BW Altor Pte. Ltd. WC N U0 109007909.00 0.00 109007909.00 0.00 109007909.00 N 28.24 CO (1) The CUSIP 12738K109 applies to Cadeler A/S's American Depositary Shares, each representing four ordinary shares of Cadeler A/S. BW Altor Pte. Ltd. (the "Reporting Person" or "BWA") holds 109,007,909.00 ordinary shares. (2) The working capital used to purchase the ordinary shares of Cadeler A/S originated from an equity injection by the Reporting Person's sole equityholder. (3) The response to Item 13 above, 28.24%, is based on a total of 385,963,349 outstanding ordinary shares of Cadeler A/S, which amount was calculated from (i) 350,957,583 shares with 89,992 shares held in treasury disclosed in Cadeler A/S' Annual Report on Form 20-F filed with the Securities and Exchange Commission on March 24, 2026, plus (ii) 35,095,758 ordinary shares of Cadeler A/S newly issued in the Private Placement (as defined herein) disclosed in Cadeler A/S' Report of Foreign Private Issuer on Form 6-K filed with the Securities and Exchange Commission on March 27, 2026. Ordinary Shares, with a nominal value of DKK 1.00 per share Cadeler A/S KALVEBOD BRYGGE 43 COPENHAGEN V G7 DK-1560 This Amendment No. 4 to Schedule 13D (this "Amendment No. 4") relates to the shares, nominal value DKK 1 per share (the "Shares"), including Shares represented by American Depositary Shares ("ADSs", each representing 4 Shares) of Cadeler A/S (the "Issuer"), whose principal executive offices are located at Arne Jacobsens Alle 7, 7th floor DK-2300 Copenhagen S, Denmark. This Amendment No. 4 amends and supplements the statement on the Schedule 13D originally filed by BWA with the Securities and Exchange Commission (the "SEC") on February 19, 2025 (the "Original Schedule 13D") and amended on May 28, 2025 ("Amendment No. 1"), October 2, 2025 ("Amendment No. 2") and on December 1, 2025 ("Amendment No. 3" and, together with the Original Schedule 13D, Amendment No. 1 and Amendment No. 2, the "Schedule 13D"). Except as specifically provided herein, this Amendment No. 4 does not modify any of the information previously reported in the Schedule 13D. Capitalized terms used herein and not otherwise defined in this Amendment No. 4 have the meanings set forth in the Original Schedule 13D. Except as otherwise stated in this Amendment No. 4, the Original Schedule 13D, as amended, remains in full force and effect. Item 2(c) is hereby amended and restated in its entirety as follows: The sole equityholder of BWA is Andreas Sohmen-Pao, who is also the Chairman of the Issuer's Board of Directors. However, all voting and investment decisions are made by the BWA board of directors. Set forth in Exhibit 1 to this Schedule 13D are the name, business address and present principal occupation or employment and citizenship of each director and officer of BWA Item 3 is hereby supplemented as follows: The working capital funds used by BWA to make the acquisitions disclosed in this Amendment No. 4 came from an equity injection by Mr. Sohmen-Pao using his personal funds. The last two paragraphs of Item 4 are hereby amended and restated in their entirety as follows: The Reporting Person expects to review from time to time their investment in the Issuer and may, depending on the Issuer's business, assets, operations, financial condition, prospects, the relative attractiveness of business and investment opportunities, and other factors, decide to: (i) purchase additional Common Shares, options or other securities of the Issuer in the open market, in privately negotiated transactions or otherwise, including the financing of potential business opportunities; (ii) sell all or a portion of the Common Shares, options or other securities now beneficially owned or hereafter acquired by them; (iii) propose one or more directors for the Issuer's board of directors; (iv) engage in discussions, negotiations or enter into other transactions with a view to obtaining direct or indirect control of the Issuer; (v) acquire assets of the Issuer and its subsidiaries; and (vi) engage in such other proposals as the Reporting Person may deem appropriate under the circumstances, including plans or proposals which may relate to, or could result in, any of the matters referred to in clauses (a) through (j). Also, consistent with the above, the Reporting Person, as securityholder of the Issuer, and Mr. Sohmen-Pao, as Chairman of the Issuer's Board of Directors, may engage in communications with, without limitation, one or more shareholders of the Issuer, one or more officers of the Issuer and/or one or more members of the board of directors of the Issuer regarding the Issuer, including but not limited to its operations, governance and control. The Reporting Person may be deemed to beneficially own 109,007,909 Shares, representing approximately 28.24% of the outstanding Shares. The foregoing beneficial ownership percentage is based on a total of 385,963,349 outstanding ordinary shares of the Issuer, which amount was calculated from (i) 350,957,583 shares with 89,992 shares held in treasury, as disclosed in the Issuer's Annual Report on Form 20-F filed with the Securities and Exchange Commission on March 24, 2026, plus (ii) 35,095,758 ordinary shares of the Issuer newly issued in the Private Placement, as disclosed in the Issuer's Report of Foreign Private Issuer on Form 6-K filed with the Securities and Exchange Commission on March 27, 2026. The Reporting Person has sole voting power and sole dispositive power over 109,007,909 Shares, representing approximately 28.24% of the outstanding Shares. The foregoing percentage is based on a total of 385,963,349 outstanding ordinary shares of the Issuer, which amount was calculated from (i) 350,957,583 shares with 89,992 shares held in treasury, as disclosed in the Issuer's Annual Report on Form 20-F filed with the Securities and Exchange Commission on March 24, 2026, plus (ii) 35,095,758 ordinary shares of the Issuer newly issued in the Private Placement, as disclosed in the Issuer's Report of Foreign Private Issuer on Form 6-K filed with the Securities and Exchange Commission on March 27, 2026. On March 26, 2026, the Reporting Person subscribed to purchase 12,126,875 newly issued Shares at a price of NOK 56.00 per Share, for a total purchase price of NOK 679,105,000 in a private placement by the Issuer of a total of 35,095,758 Shares (the "Private Placement"). On March 27, 2026, the Reporting Person purchased a total of 715,000 Shares in multiple open market transactions with a weighted average price of NOK53.52 per Share. Except as described herein, to the best of the Reporting Person's knowledge, there have been no transactions in the Shares effected by the Reporting Person or, to the best of the knowledge of the Reporting Person, without independent verification, any of the other persons with respect to whom information is given in response to Item 2, during the past 60 days. As of the date hereof, no other person is known to have the right to receive or the power to direct the receipt of dividends from, or any proceeds from the sale of, the securities beneficially owned by the Reporting Person. Not applicable. BW Altor Pte. Ltd. /s/ Nicholas John Oxleigh Fell Nicholas John Oxleigh Fell/Authorized Signatory 03/31/2026