Borr Drilling Limited – Notification of PDMR Transaction

Hamilton, Bermuda, August 13, 2026 – The board of directors of Borr Drilling Limited (NYSE and OSE: BORR) (the "Company") has resolved that the expiry date of the Company’s 2021 option grant to certain employees shall be extended to December 31, 2026. All other terms, including the strike price will remain the same. See attached the notification form for persons discharging managerial responsibilities relating to the extension.

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 Section 5-12 of the Norwegian Securities Trading Act.

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