BW Altor buys Cadeler (NYSE: CDLR) shares and returns lent stock

Rhea-AI Filing Summary

Cadeler A/S reports manager-related share dealings involving BW Altor Pte. Ltd., a person closely associated with its chairman Andreas Sohmen-Pao. BW Altor purchased 715,000 Cadeler shares at an average price of NOK 53.5218 on the Oslo Stock Exchange on 27 March 2026.

Separately, BW Altor completed the redelivery of 22,968,883 Cadeler shares on 30 March 2026 that had been lent to DNB Carnegie to facilitate settlement of a private placement of new Cadeler shares.

Key Figures

Share purchase volume: 715,000 shares Average purchase price: NOK 53.5218 per share Total purchase value: NOK 38,268,087.00 +4 more

7 metrics

Share purchase volume 715,000 shares BW Altor purchase on 27 March 2026

Average purchase price NOK 53.5218 per share BW Altor Cadeler share purchase

Total purchase value NOK 38,268,087.00 Consideration for 715,000 Cadeler shares

Redelivered lent shares 22,968,883 shares Return of shares lent to DNB Carnegie

Purchase trade venue Oslo Stock Exchange (XOSL) Market where 715,000-share trade occurred

Purchase date 27 March 2026 BW Altor Cadeler share acquisition

Redelivery date 30 March 2026 Return of 22,968,883 lent shares

Key Terms

persons discharging managerial responsibilities, Market Abuse Regulation, closely associated person, private placement, +1 more

5 terms

persons discharging managerial responsibilities regulatory

"transactions in Cadeler A/S shares by persons discharging managerial responsibilities and persons closely associated"

Persons Discharging Managerial Responsibilities are the key people in a company who make big decisions, like top managers or executives. Knowing who they are is important because their actions can influence the company’s success or failure, and they are often required to share information about their dealings to ensure transparency for investors and the public.

Market Abuse Regulation regulatory

"notification pursuant to Article 19 of the Market Abuse Regulation (EU) no. 596/2014"

Market abuse regulation consists of laws and rules designed to prevent dishonest or manipulative practices in financial markets. It aims to ensure fair and transparent trading, so investors can trust that markets operate honestly, much like rules that keep a game fair. By reducing unfair advantages, it helps protect investor confidence and promotes healthy, efficient markets.

closely associated person regulatory

"BW Altor Pte. Ltd., a person closely associated with Andreas Sohmen-Pao, Chairman of the Board of Directors"

private placement financial

"in connection with facilitating the settlement of a private placement of new shares in Cadeler A/S"

A private placement is a way for companies to raise money by selling securities directly to a small group of investors instead of through a public offering. This process is often quicker and less regulated, making it similar to offering a special, exclusive investment opportunity to select individuals or institutions. For investors, it can provide access to unique investment options that are not available on public markets.

redelivery of shares financial

"Redelivery of shares in Cadeler A/S lent to DNB Carnegie"

Form 6-K: How Foreign Companies Report to the SEC →

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 March 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

Stock Exchange Announcement

CADELER A/S: REPORTING ON TRANSACTIONS IN CADELER A/S SHARES BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM

Copenhagen, 31 March 2026: Cadeler A/S (“Cadeler”) has received notification pursuant to Article 19 of the Market Abuse Regulation (EU) no. 596/2014, as amended, of the below transaction related to shares in Cadeler made by persons discharging managerial responsibilities in Cadeler and/or persons closely associated with them.

BW Altor Pte. Ltd., a person closely associated with Andreas Sohmen-Pao, Chairman of the Board of Directors, has made the transactions described in the attached notification on the dates set out therein.

Please see the attached file for further details.

For further information, please contact:

Mikkel Gleerup

CEO, Cadeler

+45 3246 3102

mikkel.gleerup@cadeler.com

Alexander Simmonds

EVP & CLO, Cadeler

+44 7376 174172

alexander.simmonds@cadeler.com

About Cadeler A/S

Cadeler is a global leader in offshore wind installation, operations, and maintenance services. Cadeler is a pure play company, operating solely in the offshore wind industry with an uncompromising focus on safety and the environment. Cadeler owns and operates the industry’s largest fleet of jack-up offshore wind installation vessels and has for more than 10 years been a key supplier in the development of offshore wind energy to power millions of households. Cadeler’s fleet, expertise and capacity to handle the largest and most complex next-generation offshore wind installation projects positions the company to deliver exceptional services to the industry. Cadeler is committed to being at the forefront of sustainable wind farm installation and to enabling the global energy transition towards a future built on renewable energy. Cadeler is listed on the New York Stock Exchange (ticker: CDLR) and the Oslo Stock Exchange (ticker: CADLR).

For more information, please visit www.cadeler.com.

Reporting of transactions made by persons discharging managerial responsibilities and persons closely associated with them in Cadeler A/S’ shares

1			Details of the Reporting Person and their Closely Associated Persons
a)			Name			BW Altor Pte. Ltd.
2			Reason for the notification
a)			Position/status			Closely associated person to Andreas Sohmen-Pao, Chairman of the Board of Directors.
b)			Initial notification /Amendment			Initial notification
3			Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)			Name			Cadeler A/S
b)			LEI			9845008439EUED140282
4.1			Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)			Description of the financial instrument, type of instrument and identification code			Shares ISIN DK0061412772
b)			Nature of the transaction			Purchase of shares
c)			Price(s) and volume(s)			Price(s) in NOK			Volume(s)
						NOK53.5218			715,000
d)			Aggregated information -Aggregated volume -Price			Average price per share: NOK 53.5218 Total number of shares: 715,000 shares Total price: NOK 38,268,087.00
e)			Date of the transaction			27 March 2026
f)			Place of the transaction			Oslo Stock Exchange, XOSL
4.2			Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)			Description of the financial instrument, type of instrument and identification code			Shares ISIN DK0061412772
b)			Nature of the transaction			Redelivery of shares in Cadeler A/S lent to DNB Carnegie, a part of DNB Bank ASA, in connection with facilitating the settlement of a private placement of new shares in Cadeler A/S.
c)			Price(s) and volume(s)			Price(s) in NOK			Volume(s)
						N/A			22,968,883

d)			Aggregated information -Aggregated volume -Price			Average price per share: N/A Total number of shares: 22,968,883 shares Total price: N/A
e)			Date of the transaction			30 March 2026
f)			Place of the transaction			Outside a trading venue

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: March 31, 2026                    CADELER A/S

(Registrant)

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

FAQ

What insider-related share transactions did Cadeler (CDLR) disclose in March 2026?

Cadeler disclosed that BW Altor Pte. Ltd. purchased 715,000 Cadeler shares at an average price of NOK 53.5218 on 27 March 2026 and later redelivered 22,968,883 previously lent shares on 30 March 2026 linked to a private placement settlement.

Who is BW Altor Pte. Ltd. in relation to Cadeler (CDLR)?

BW Altor Pte. Ltd. is identified as a person closely associated with Andreas Sohmen-Pao, the Chairman of Cadeler’s Board of Directors. Its transactions in Cadeler shares are reportable under Article 19 of the EU Market Abuse Regulation governing dealings by manager-related parties.

How many Cadeler (CDLR) shares did BW Altor buy and at what price?

BW Altor bought 715,000 Cadeler shares at an average price of NOK 53.5218 per share on 27 March 2026. The total consideration for this purchase was NOK 38,268,087.00, and the trade took place on the Oslo Stock Exchange under ISIN DK0061412772.

What does the redelivery of 22,968,883 Cadeler (CDLR) shares mean?

The redelivery refers to 22,968,883 Cadeler shares being returned to BW Altor after having been lent to DNB Carnegie. This lending was used to facilitate settlement of a private placement of new Cadeler shares, and the redelivery occurred outside a trading venue on 30 March 2026.

On which exchanges are Cadeler (CDLR) shares listed?

Cadeler shares are listed on both the New York Stock Exchange under ticker CDLR and on the Oslo Stock Exchange under ticker CADLR. The reported 715,000-share purchase at NOK 53.5218 took place on the Oslo Stock Exchange, identified by the market code XOSL.

What type of company is Cadeler A/S (CDLR)?

Cadeler A/S is a pure-play offshore wind company focused on installation, operations, and maintenance services. It operates the industry’s largest fleet of jack-up offshore wind installation vessels and has supplied offshore wind projects globally for more than 10 years to support renewable energy deployment.