Constellation Oil Services Successfully Prices USD 650 Million Senior Secured Bond

Luxembourg, 22 July 2026 – Constellation Oil Services Holding S.A. (“Constellation” or the “Company”, OSE: COSH) has today successfully priced a USD 650 million senior secured bond due 2033 (the “Bonds”). The Bonds will carry a fixed coupon of 7.700% p.a., payable semi-annually. The net proceeds from the bond issue, together with cash on hand, will be used to discharge and satisfy in full the Company’s outstanding USD 650 million 9.375% Senior Secured Notes due 2029, and to pay fees and expenses in connection with the transaction.

Settlement of the Bonds is expected on or about August 3, 2026, subject to customary closing conditions. An application will be made for the Bonds to be listed on the Singapore Exchange Securities Trading Limited – SGX-ST.

This press release does not constitute an offer of any securities for sale. Any securities have not been and will not be registered under the U.S. Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.

For further queries, please contact: Investor Relations Team Email: ir@theconstellation.com

Additional information about the Company can be found at Constellation IR web site.

This information is subject to the disclosure requirements pursuant to Section 5-12 of the Norwegian Securities Trading Act.

About Constellation

Constellation is a market leading provider of offshore oil and gas contract drilling services through its subsidiary Serviços de Petróleo Constellation S.A. (“Serviços de Petróleo Constellation”). With continuous operations since 1981, Serviços de Petróleo Constellation has built an unmatched reputation for excellence in offshore drilling services, obtaining ISO 9001, ISO 14001, ISO 45001, and API Spec Q2 certifications for its quality management, environmental and safety records and systems.