Form: 6-K

Report of foreign issuer [Rules 13a-16 and 15d-16]

August 25, 2026


UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM 6-K
 
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16 OR 15D-16 OF THE
SECURITIES EXCHANGE ACT OF 1934

For the month of August 2026

Commission File Number: 001-41889
 

CADELER A/S
(Translation of registrant's name into English)
 

Kalvebod Brygge 43
DK-1560 Copenhagen V, Denmark
(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x Form 40-F o




INFORMATION CONTAINED IN THIS FORM 6-K REPORT

On August 25, 2026, Cadeler A/S (the “Company”) published its interim financial report for the first half of 2026. A copy of the interim financial report is attached hereto as Exhibit 99.1.

Exhibit No.Description
99.1









SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


Date: August 25, 2026                    CADELER A/S
(Registrant)


By: /s/ Mikkel Gleerup        
Name:     Mikkel Gleerup
Title:    Chief Executive Officer