NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO AUSTRALIA, CANADA, HONG KONG, JAPAN, SOUTH AFRICA ORINDIRECTLY, IN OR INTO AUSTRALIA, CANADA, HONG KONG, JAPAN, SOUTH AFRICA OR
THE UNITED STATES OR ANY OTHER JURISDICTION IN WHICH THE RELEASE, PUBLICATION
OR DISTRIBUTION WOULD BE UNLAWFUL. THIS ANNOUNCEMENT DOES NOT CONSTITUTE AN OFFER OF ANY OF THE SECURITIES DESCRIBED HEREIN.

Oslo, 5 September 2025: Reference is made to the stock exchange announcement made by Dolphin Drilling AS (the "Company") earlier today regarding the last day of the subscription period in the subsequent offering (the "SubsequentOffering") of up to 27,803,642,659 new shares in the Company (the "OfferShares") at a subscription price of NOK 0.01 per share. The terms of the Subsequent Offering are set out in the prospectus dated 25 August 2025, as supplemented by the prospectus supplement dated 3 September 2025 (the "Prospectus").

The subscription period for the Subsequent Offering expired today, 5 September 2025, at 16:30 CEST. The Company has been informed by the Managers (as defined below) that at the end of the subscription period, and based on a preliminary count, subscriptions had been received for a total of 446,796,161 Offer Shares.

The allocation of the Offer Shares is expected to be resolved by the Company's board of directors on or around 8 September 2025 in accordance with the allocation criteria set out in the Prospectus. The final results of the Subsequent Offering will be published shortly thereafter in a separate announcement.

Notifications of allocated Offer Shares in the Subsequent Offering and the corresponding subscription amount to be paid by each subscriber will be distributed by the Managers on or around 8 September 2025. The due date for payment of the Offer Shares is on 10 September 2025. Subject to due payment of the Offer Shares by the subscribers, the share capital increase relating to the Subsequent Offering is expected to be registered with the Norwegian Register of Business Enterprises on or around 15 September 2025. The Offer Shares will thereafter be delivered to the VPS accounts of the subscribers to whom they are allocated, expected on or around 16 September 2025. The first day of trading of the Offer Shares on Euronext Growth Oslo is expected on or around 16 September 2025. The Managers may be contacted for information regarding allocation, payment and delivery of Offer Shares.

Advisors
Arctic Securities AS, Clarksons Securities AS and DNB Carnegie, a part of DNB Bank ASA (the "Managers") act as joint global coordinators and joint bookrunners in the Subsequent Offering. Wikborg Rein Advokatfirma AS serves as legal counsel to the Company.

*****

For further information, please contact:

Ingolf Gillesdal, CFO

Mob: +47 920 45 320

Mail: Ingolf.gillesdal@dolphindrilling.com

About Dolphin Drilling AS:

Dolphin Drilling AS is an Oslo listed, Aberdeen head-quartered, company which owns and operates a fleet of harsh environment mid-water & deep-water semisubmersible drilling rigs, capable of working worldwide.

IMPORTANT INFORMATION

The information contained in this announcement is for background purposes only and does not purport to be full or complete. No reliance may be placed for any purpose on the information contained in this announcement or its accuracy, fairness or completeness. None of the Managers or any of their respective affiliates or any of their respective directors, officers, employees, advisors or agents accepts any responsibility or liability whatsoever for, or makes any representation or warranty, express or implied, as to the truth, accuracy or completeness of the information in this announcement (or whether any information has been omitted from the announcement) or any other information relating to the Company, its subsidiaries or associated companies, whether written, oral or in a visual or electronic form, and howsoever transmitted or made available, or for any loss howsoever arising from any use of this announcement or its contents or otherwise arising in connection therewith. This announcement has been prepared by and is the sole responsibility of the Company.

Neither this announcement nor the information contained herein is for publication, distribution or release, in whole or in part, directly or indirectly, in or into or from the United States (including its territories and possessions, any State of the United States and the District of Columbia), Australia, Canada, Japan, Hong Kong, South Africa or any other jurisdiction where to do so would constitute a violation of the relevant laws of such jurisdiction. The publication, distribution or release of this announcement may be restricted by law in certain jurisdictions and persons into whose possession any document or other information referred to herein should inform themselves about and observe any such restriction. Any failure to comply with these restrictions may constitute a violation of the securities laws of any such jurisdiction.

This announcement is not an offer for sale of securities in the United States. The securities referred to in this announcement have not been and will not be registered under the U.S. Securities Act, and may not be offered or sold in the United States absent registration with the U.S. Securities and Exchange Commission or an exemption from, or in a transaction not subject to, the registration requirements of the U.S. Securities Act and in accordance with applicable U.S. state securities laws. The Company does not intend to register any securities referred to herein in the United States or to conduct a public offering of securities in the United States.

This announcement is an advertisement and is not a prospectus for the purposes of Regulation (EU) 2017/1129 of the European Parliament and of the Council of 14 June 2017 (the "EU Prospectus Regulation") (together with any applicable implementing measures in any Member State).

Any offering of the securities referred to in this announcement will be made by means of the Prospectus. Investors in the Subsequent Offering should not subscribe for any securities referred to in this announcement except on the basis of information contained in the Prospectus. Copies of the Prospectus are available in the Company's registered office and, subject to certain exceptions, on the websites of the Managers. In any EEA Member State other than Norway, this communication is only addressed to and is only directed at qualified investors in that Member State within the meaning of the EU Prospectus Regulation, i.e. only to investors who can receive the offer without an approved prospectus in such EEA Member State.

This communication is only being distributed to and is only directed at persons in the United Kingdom that are "qualified investors" within the meaning of the EU Prospectus Regulation as it forms part of English law by virtue of the European Union (Withdrawal) Act 2018 and that are (i) investment professionals falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Order") or (ii) high net worth entities, and other persons to whom this announcement may lawfully be communicated, falling within Article 49(2)(a) to (d) of the Order (all such persons together being referred to as "relevantpersons"). This communication must not be acted on or relied on by persons who are not relevant persons. Any investment or investment activity to which this communication relates is available only to relevant persons and will only be conducted with relevant persons. Persons distributing this communication must satisfy themselves that it is lawful to do so.

This announcement is made by, and is the responsibility of, the Company. The Managers and their respective affiliates are acting exclusively for the Company and no one else in connection with the Subsequent Offering. They will not regard any other person as their respective clients in relation to the Subsequent Offering and will not be responsible to anyone other than the Company, for providing the protections afforded to their respective clients, nor for providing advice in relation to the Subsequent Offering, the contents of this announcement or any transaction, arrangement or other matter referred to herein.

In connection with the Subsequent Offering, the Managers and any of their respective affiliates, acting as investors for their own accounts, may subscribe for or purchase shares and in that capacity may retain, purchase, sell, offer to sell or otherwise deal for their own accounts in such shares and other securities of the Company or related investments in connection with the Subsequent Offering or otherwise. Accordingly, references in the Prospectus to the shares being issued, offered, subscribed, acquired, placed or otherwise dealt in should be read as including any issue or offer to, or subscription, acquisition, placing or dealing by, such Managers and any of their respective affiliates acting as investors for their own accounts. The Managers do not intend to disclose the extent of any such investment or transactions otherwise than in accordance with any legal or regulatory obligations to do so.

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 "believe", "aim", "expect", "anticipate", "intend", "estimate", "will", "may", "continue", "should" 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. Forward-looking statements speak only as of the date they are made and cannot be relied upon as a guide to future performance. The Company, each of the Managers and their respective affiliates expressly disclaims any obligation or undertaking to update, review or revise any forward-looking statement contained in this announcement whether as a result of new information, future developments or otherwise. 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 information is subject to disclosure under the Norwegian Securities Trading Act, §5-12. The information was submitted for publication at 2025-09-05 17:46 CEST.

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