Oslo, 12 January 2026: Reference is made to the stock exchange announcement made by Dolphin Drilling AS (the "Company") on 1 December 2025 regarding the Company's extraordinary general meeting resolving, among other things, to approve a reverse share split in the ratio of 300:1, and earlier today regarding the resolution by the board of directors to issue 208 new shares to facilitate the reverse share split.

As further set out below, the board of directors has determined the key dates for implementation of the reverse share split. The reverse share split will include the 208 new shares which the board of directors resolved to issue earlier today. In connection with the reverse share split, the Company's shares will also be transferred to a new ISIN.

Key information relating to the reverse share split and change of ISIN:

• Date on which the corporate action was made public: 17 November 2025
• Reverse share split ratio: 300:1, 300 old shares give one (1) new share
• Last day including the right: 15 January 2026
• Ex. date: 16 January 2026
• Record date: 19 January 2026
• New ISIN: NO 0013711739
• Date of ISIN change: 16 January 2026
• Rounding rules: Rounded downwards*
• Date of approval: 1 December 2025

*Shareholders who do not hold a number for shares dividable by the ratio (300:1) will, in connection with completion of the share consolidation, have their shareholding rounded down to the nearest whole share. No fractional shares will be issued. The general meeting has resolved that fractional shares shall be added together to whole shares and sold on Euronext Growth Oslo, with the net proceeds from the sale being donated to a charitable purpose as determined by the board of directors.

For further information, please contact:

Ingolf Gillesdal, CFO
Tel: +47 920 45 320

Dolphin Drilling | www.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.

This information is subject to the disclosure requirements pursuant to the Norwegian Securities Trading Act section 5-12 and the Euronext Growth Rule Book part II.

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