Borr Drilling Limited – Notification of PDMR Transaction

Hamilton, Bermuda, August 17, 2026 – Borr Drilling Limited (NYSE and OSE: BORR) (the "Company") has received notification of a transaction related to Mr. Tor Olav Trøim, a director of the Company and a person discharging managerial responsibilities in the Company.

Drew Holdings Ltd., a close associate of Mr. Trøim, has purchased 500,000 shares at an average price of USD 4.3868 per share. For further information, please see the transaction form enclosed with this announcement.

About Borr Drilling Limited Borr Drilling Limited is an international drilling contractor incorporated in Bermuda in 2016 and listed on the New York Stock Exchange since July 31, 2019 and on Euronext Oslo Børs since May 21, 2026 under the ticker "BORR". The Company owns and operates jack-up rigs of modern and high specification designs and provides services focused on the shallow-water segment to the offshore oil and gas industry worldwide. Please visit our website at www.borrdrilling.com.

This information is subject to the disclosure requirements pursuant to MAR Article 19 and Section 5-12 of the Norwegian Securities Trading Act.

Questions should be directed to: Magnus Vaaler, CFO, +44 1224 289208, ir@borrdrilling.com