UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

December 10, 2025

Commission File Number: 001-39007

Borr Drilling Limited

S.E. Pearman Building

2^nd Floor 9 Par-la-Ville Road

Hamilton HM11 Bermuda

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F

Yes ☒ No ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Yes ☐ No ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes ☐ No ☒

INCORPORATION BY REFERENCE

This Form 6-K is hereby incorporated by reference into the registration statements of Borr Drilling Limited (the “Company”) on Form F-3 (Registration Number 333-286490 ) and into each prospectus outstanding under the foregoing registration statements, to the extent not superseded by documents or reports subsequently filed or furnished by the Company under the Securities Act of 1933, or the Securities Exchange Act of 1934.

Exhibits

1.1	Underwriting Agreement, dated December 9, 2025, among the Company, DNB Carnegie, Inc., Clarksons Securities AS, Citigroup Global Markets Inc., Fearnley Securities AS and Pareto Securities AS

5.1	Legal Opinion of Conyers Dill & Pearman Limited

99.1	Press release, dated December 10, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	BORR DRILLING LIMITED

Date: December 10, 2025	By:	/s/ Mi Hong Yoon

	Name:	Mi Hong Yoon

	Title:	Director