X0609 4 2026-10-14 0 0001715497 Borr Drilling Ltd BORR BORR 0002116137 Snowling Harvey Edward true C/O BORR DRILLING LIMITED 2ND FLOOR 9 PAR-LA-VILLE ROAD HAMILTON D0 HM11 BERMUDA 0 1 0 0 Chief Operating Officer 0 Common Shares 2026-10-14 2026-10-14 5 P 0 E 300000 4.91 A 445944 D Common Shares 2026-10-14 2026-10-14 5 S 0 E 300000 4.91 D 145944 D Common Shares 52500 D Employee Stock Option to Purchase Common Shares 1.66 2026-10-13 2026-10-14 5 M 0 E 150000 4.91 D 2024-08-12 2026-12-31 Common Shares 150000 0 D Employee Stock Option to Purchase Common Shares 1.66 2026-10-13 2026-10-14 5 M 0 E 150000 4.91 D 2023-08-12 2026-12-31 Common Shares 150000 0 D Employee Stock Option to Purchase Common Shares 1.66 2025-08-12 2026-12-31 Common Shares 150000 0 D Employee Stock Option to Purchase Common Shares 6.54 2025-08-15 2029-08-15 Common Shares 75000 0 D Employee Stock Option to Purchase Common Shares 6.54 2026-08-15 2029-08-15 Common Shares 75000 0 D Employee Stock Option to Purchase Common Shares 6.54 2027-08-15 2029-08-15 Common Shares 75000 0 D Employee Stock Option to Purchase Common Shares 6.31 2025-03-01 2028-11-17 Common Shares 100000 0 D Employee Stock Option to Purchase Common Shares 6.31 2026-03-01 2028-11-17 Common Shares 100000 0 D Employee Stock Option to Purchase Common Shares 6.31 2027-03-01 2028-11-17 Common Shares 100000 0 D Employee Stock Option to Purchase Common Shares 3.66 2024-03-01 2027-09-01 Common Shares 120000 0 D Employee Stock Option to Purchase Common Shares 4.41 2025-03-01 2027-09-01 Common Shares 120000 0 D Employee Stock Option to Purchase Common Shares 5.16 2026-03-01 2027-09-01 Common Shares 120000 0 D The reported purchase was effected in connection with a cashless exercise of vested stock options. The sale proceeds were used to pay the exercise price and applicable withholding taxes, and the reporting person received the remaining net proceeds Includes (a) 57,274 restricted stock units (RSUs) that vest in full on September 1, 2026, (b) 57,273 RSUs that vest in full on September 1, 2027 and (c) 57,274 RSUs that vest in full on September 1, 2028, each conditional upon continuous employment with the Issuer at the date of vesting. Each RSU represents a contingent right to receive one common share The reported sale was effected in connection with a cashless exercise of vested stock options. The sale proceeds were used to pay the exercise price and applicable withholding taxes, and the reporting person received the remaining net proceeds Represents 52,500 restricted stock units (RSUs) that vest in full on September 1, 2027, conditional upon continuous employment with the Issuer at the date of vesting. Each RSU represents a contingent right to receive one common share Represents the exercise of vested stock options originally granted on 12 August 2021 at an exercise price of $1.66 per share. Following the transaction, 150,000 options remain outstanding and exercisable Grant of options on August 12, 2021 - options 1/3 vest every August 1 between 2023 and 2025 with strike price as at date of filing The reported transaction involved an amendment of an outstanding option to extend the expiration date, resulting in the cancellation of the "old" option and the grant of a replacement option. The option was originally granted on August 12, 2021, and is 100% vested and exercisable Grant of options on August 15, 2024 - options 1/3 vest every August 15 between 2025 and 2027 with strike price as at date of filing Grant of options on November 17, 2023 - options 1/3 vest every March 1 between 2025 and 2027 with strike price as at date of filing Grant of options on September 1, 2022 - options 1/3 vest every March 1 between 2024 and 2026 with staggered strike price as at date of filing /s/ Temi Bankole as attorney-in-fact 2026-10-16