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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): September 2, 2025

NABORS INDUSTRIES LTD.

(Exact name of registrant as specified in its charter)

Bermuda |  | 001-32657 |  | 98-0363970
(State or Other Jurisdiction of Incorporation or Organization) |  | (Commission File Number) |  | (I.R.S. Employer Identification No.)

Crown House 4 Par-la-Ville Road Second Floor Hamilton, HM08 Bermuda |  | N/A
(Address of principal executive offices) |  | (Zip Code)

(441) 292-1510

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ¨ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

| ¨ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

| ¨ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

| ¨ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of exchange on which registered
Common shares |  | NBR |  | NYSE

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

| Item 7.01 | Regulation FD Disclosure.

On September 3, 2025, Mr. William Restrepo, the Chief Financial Officer of Nabors Industries Ltd., attended the Barclays 39th Annual Energy-Power Conference. Mr. Restrepo participated in a panel discussion on land drilling. On September 2, 2025, the Company published an Investor Presentation on its website, which was used as the basis for those discussions. The Investor Presentation is attached hereto as Exhibit 99.1 and incorporated herein by reference.

The presentation referenced above contain forward-looking statements within the meaning of the Securities Act of 1933, as amended (the “Securities Act”), and the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such forward-looking statements are subject to risks and uncertainties, as disclosed from time to time in the Company’s filings with the Securities and Exchange Commission. As a result of these factors, actual results may differ materially from those indicated or implied by such forward-looking statements.

The information in this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to liabilities of that Section or Sections 11 and 12(a)(2) of the Securities Act.

| Item 9.01 | Financial Statements and Exhibits.

(d) Exhibits

Exhibit No. |  | Description
99.1 |  | Presentation
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL document contained in Exhibit 101)

SIGNATURE

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 hereunto duly authorized.

| Nabors Industries Ltd.
Date: September 11, 2025 | By: | /s/ Mark D. Andrews
|  | Mark D. Andrews
|  | Corporate Secretary