Constellation Reports 2Q26 Results

Luxembourg, 25 August 2026 – Constellation Oil Services Holding S.A. (“Constellation” or the “Company”) reports today its 2Q26 results. The earnings release is available on the Company´s Investor Relations website at ir.theconstellation.com.

2Q26 Highlights:

Consistent revenue and profitability growth 99% fleet uptime in 2Q26 Net operating revenue totaled US$ 251.8 million, up 81.3% compared to 2Q25 Adjusted EBITDA more than doubled, increasing by 130.1% to US$ 126.4 million compared with 2Q25, driven by repriced contracts and strong operational execution Cash and cash equivalents, including short-term investments, of US$ 225.5 million on 30 June 2026, reflecting reversal of 1Q26 working capital build-up

Constantly delivering Company’s commitments Contract backlog of US$ 2.5 billion with coverage visibility through 2030 Net leverage further reduced to 1.18x Shareholder distribution baseline of US$ 100 million annually, with US$ 50.0 million paid in 1H2026 in two tranches and third tranche of approximately US$ 26.0 million approved by the Board on 25 August 2026 Completed US$ 650.0 million bond refinancing at a materially reduced coupon in August, with the new notes rated B+ by both Fitch and Standard & Poor's

We remind you that the Company will host an earnings conference call tomorrow, Wednesday, 26 August 2026, at 10:00 a.m. BRT (09:00 a.m. EDT and 03:00 p.m. CEST). The conference call will be webcast live at:

https://tenmeetings.com.br/ten-events/#/webinar?evento=ConferenciadeResultados2T26_626. Participants are recommended to join the call 10 minutes prior to the scheduled start time.

A replay of the webcast will be available on the Investor Relations website.

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.

IMPORTANT NOTICE

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 into whose possession 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.