COSH Announces Fixed Income Roadshow

Luxembourg, 20 July 2026 – Constellation Oil Services Holding S.A. (“Constellation” or the “Company”, OSE: COSH) has announced fixed income investor meetings. A USD-denominated senior secured bond issue of USD 625 million may follow, subject to, inter alia, market conditions. Net proceeds from the bond issue, together with cash in hand, would be used to discharge and satisfy in full the Company’s outstanding USD 650 million 9.375% Senior Secured Notes due 2029.

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 the Investor Relations Team at ir@theconstellation.com.

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.