CONSTELLATION OIL SERVICES HOLDING S.A. COSH ADDITIONAL REGULATED INFORMATION REQUIRED TO BE DISCLOSED UNDER THE LAWS OF A MEMBER STATE

Constellation Announces the Results of the Ordinary General Meeting and the Adjournment of the Extraordinary General Meeting

15. October 2026 kl. 22:10

Luxembourg, 15 October 2026: Constellation Oil Services Holding S.A. ("Constellation" or the "Company") announces that its Ordinary General Meeting ("OGM") was held today in Luxembourg and that all voting items on the OGM agenda were approved. The voting items are summarized below. The full text of each resolution is set out in the minutes of the meeting:

2. Share premium distribution of USD 40,000,000 (following the third quarter 2026 financial statements) - approved by 61.05% of the total voting capital (represented by 53,203,816 shares), with no votes against; 3. Share premium distribution of USD 25,000,000 (following the fourth quarter 2026 financial statements and preliminary results) - approved by 61.05% of the total voting capital (represented by 53,203,816 shares), with no votes against; 4. Confirmation of the co-optation and appointment of Anne Maillard as director for a term expiring at the 2028 annual general meeting - approved by 61.05% of the total voting capital (represented by 53,198,616 shares), with 5,200 shares abstaining and no votes against; 5. Appointment of Carlos Tadeu da Costa Fraga as director, with immediate effect, for a term expiring at the 2028 annual general meeting - approved by 61.05% of the total voting capital (represented by 53,198,616 shares), with 5,200 shares abstaining and no votes against; 6. Remuneration of Carlos Tadeu da Costa Fraga as director - approved by 61.05% of the total voting capital (represented by 53,198,616 shares), with 5,200 shares abstaining and no votes against.

For the conditions and further details of each resolution, please refer to the minutes of the meeting.

With respect to the Extraordinary General Meeting ("EGM") also scheduled on 15 October 2026 with one item in the agenda (share buyback program of up to USD 35,000,000), the attendance quorum required by article 20.14 of the articles of association of the Company has not been met at the first EGM. Accordingly, Constellation announces that the EGM will be reconvened and held on 12 November 2026. Please refer to the attached EGM Convening Notice for further information concerning the reconvened EGM.

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.

NOTICE REGARDING FORWARD-LOOKING STATEMENTS

Matters discussed in this announcement may constitute forward-looking statements. Forward-looking statements are statements that are not historical facts and may be identified by words such as "anticipate", "believe", "continue", "estimate", "expect", "intends", "may", "should", "will" and similar expressions. The forward-looking statements in this release are based upon various assumptions, many of which are based, in turn, upon further assumptions. Although the Company believes that these assumptions were reasonable when made, these assumptions are inherently subject to significant known and unknown risks, uncertainties, contingencies and other important factors which are difficult or impossible to predict and are beyond its control. Such risks, uncertainties, contingencies and other important factors could cause actual events to differ materially from the expectations expressed or implied in this release by such forward-looking statements. The information, opinions and forward-looking statements contained in this announcement speak only as at its date, and are subject to change without notice.

This announcement is made by, and is the responsibility of, the Company.

This announcement is for information purposes only and is not to be relied upon in substitution for the exercise of independent judgment. It is not intended as investment advice and under no circumstances is it to be used or considered as an offer to sell, or a solicitation of an offer to buy any securities or a recommendation to buy or sell any securities of the Company.

The distribution of this announcement and other information may be restricted by law in certain jurisdictions. Persons in possession of this announcement or such other information should come are required to inform themselves about and to observe any such restrictions.

This announcement does not constitute or form a part of any offer of securities for sale or a solicitation of an offer to purchase securities of the company in the United States or any other jurisdiction. Not for publication, distribution or release, in whole or in part, directly or indirectly, in or into the United States of America (including its territories and possessions, any state of the united states of America and the district of Columbia) (the "united states"), Australia, Canada, the Hong Kong special administrative region of the people's republic of China or Japan, or any other jurisdiction in which the publication, distribution or release would be unlawful.

Vedlegg

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Press Release_COSH OGM Results and EGM Adjournment.pdf
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COSH - Minutes of the Ordinary General Meeting - 15 Oct 2026.pdf
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COSH - convening notice for 2nd EGM - 12.11.2026.pdf
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NDR Holders - Form of Voting Instructions to Depository Agent (Equro).pdf
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ORDINARY SHAREHOLDERS - VOTING FORM.pdf