Mark D. Andrews - 31 Dec 2025 Form 4 Insider Report for NABORS INDUSTRIES LTD (NBR)

Reporting relationship: CORPORATE SECRETARY
Issuer ticker: NBR
Reported as of: 31 Dec 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 05 Jan 2026, 08:56:16 UTC
Prior SEC filing: 20 Feb 2025
Next SEC filing: 11 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Mark D. Andrews

Key filing fact

Mark D. Andrews filed Form 4 for NABORS INDUSTRIES LTD (NBR) on 05 Jan 2026.

Key facts

This page summarizes Mark D. Andrews's Form 4 filing for NABORS INDUSTRIES LTD (NBR).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 05 Jan 2026, 08:56.

Change

Previous filing in this sequence was filed on 20 Feb 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001414596 Primary reporting owner

Andrews Mark D

Relationship: CORPORATE SECRETARY
Address: C/O NABORS CORPORATE SERVICES, INC, 515 WEST GREENS ROAD, HOUSTON
Signature: /s/ Mark D. Andrews
Signature date: 05 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NBR transaction

Common Stock

Disposed to Issuer

Transaction value: $0
Shares: -1,582
Change %: -8%
Price: $0.000000
Shares after: 18,113
Date: 31 Dec 2025
Ownership: Direct
Footnotes: F1

NBR transaction

Common Stock

Options Exercise

Transaction value: $0
Shares: +1,642
Change %: +9.1%
Price: $0.000000
Shares after: 19,755
Date: 01 Jan 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NBR transaction Derivative

2023 Long Term Performance Share Units

Award

Transaction value: $0
Shares: +1,642
Change %
Price: $0.000000
Shares after: 1,642
Date: 01 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,642
Exercise price
Footnotes: F3, F4

NBR transaction Derivative

2023 Long Term Performance Share Units

Options Exercise

Transaction value: $0
Shares: -1,642
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 01 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,642
Exercise price
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents the number of TSR shares forfeited on December 31, 2025, out of a total of 1,582 TSR shares originally granted to the Reporting Person on February 14, 2023, based on the Issuer's relative total shareholder return as compared to a peer group of companies during the three-year performance period beginning on January 1, 2023 and ending on December 31, 2025, as determined on December 31, 2025, by the Compensation Committee of the Issuer's Board of Directors (the "Compensation Committee").

Footnote F2

Represents the aggregate number of Long Term 2023 Performance restricted stock units originally granted on May 18, 2023, the vesting of which was subject to the achievement of certain ROIC performance criteria, that have been earned as a result of the achievement of the applicable performance criteria. All of such shares have fully vested as of January 1, 2026.

Footnote F3

Performance restricted stock units convert into common shares on a 1-for-1 basis.

Footnote F4

On May 18, 2023, the Reporting Person was granted Performance restricted stock units, the vesting of which is subject to the achievement of certain ROIC performance criteria for a three year performance period beginning on January 1, 2023 and ending on December 31, 2025. The number of shares reported in this line item represents the number of Performance restricted stock units that were earned as a result of the achievement of such performance criteria.