Corbin J. Robertson Jr. - 10 Feb 2026 Form 4 Insider Report for NATURAL RESOURCE PARTNERS LP (NRP)

Reporting relationship: Chairman and CEO, Director, 10%+ Owner
Issuer ticker: NRP
Reported as of: 10 Feb 2026
Net transaction value: -$3,527,065
SEC form: 4
Accepted by SEC: 12 Feb 2026, 17:16:17 UTC
Prior SEC filing: 06 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ CORBIN J ROBERTSON JR

Key filing fact

Corbin J. Robertson Jr. filed Form 4 for NATURAL RESOURCE PARTNERS LP (NRP) on 12 Feb 2026.

Key facts

This page summarizes Corbin J. Robertson Jr.'s Form 4 filing for NATURAL RESOURCE PARTNERS LP (NRP).
6 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 12 Feb 2026, 17:16.

Change

Previous filing in this sequence was filed on 06 Feb 2026.
Current net transaction value: -$3,527,065.

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 0001194888 Primary reporting owner

ROBERTSON CORBIN J JR

Relationship: Chairman and CEO, Director, 10%+ Owner
Address: 1415 LOUISIANA STREET, SUITE 2400, HOUSTON
Signature: /s/ CORBIN J ROBERTSON JR
Signature date: 12 Feb 2026

Reported non-derivative transactions

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

NRP transaction

COMMON UNITS

Options Exercise

Transaction value
Shares: +72,849
Change %: +10%
Price
Shares after: 792,324
Date: 10 Feb 2026
Ownership: BY QUINTANA HOLDINGS LP
Footnotes: F1, F2

NRP transaction

COMMON UNITS

Tax liability

Transaction value: $3,527,065
Shares: -28,666
Change %: -3.6%
Price: $123.04
Shares after: 763,658
Date: 10 Feb 2026
Ownership: BY QUINTANA HOLDINGS LP
Footnotes: F2

NRP holding

COMMON UNITS

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,727,986
Date: 10 Feb 2026
Ownership: BY WESTERN POCAHONTAS PROPERTIES LIMITED PARTNERSHIP
Footnotes: F3

NRP holding

COMMON UNITS

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 156,000
Date: 10 Feb 2026
Ownership: BY NRP (GP) LP
Footnotes: F4

Reported derivative securities

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

NRP transaction Derivative

PERFORMANCE UNITS

Options Exercise

Transaction value
Shares: +40,368
Change %
Price
Shares after: 0
Date: 10 Feb 2026
Ownership: Direct
Underlying class: COMMON UNITS
Underlying amount: 40,368
Exercise price
Footnotes: F5

NRP transaction Derivative

PHANTOM UNITS

Options Exercise

Transaction value
Shares: +27,220
Change %
Price
Shares after: 0
Date: 10 Feb 2026
Ownership: Direct
Underlying class: COMMON UNITS
Underlying amount: 27,220
Exercise price
Footnotes: F6

NRP transaction Derivative

PHANTOM UNITS

Options Exercise

Transaction value
Shares: +2,756
Change %
Price
Shares after: 2,756
Date: 10 Feb 2026
Ownership: Direct
Underlying class: COMMON UNITS
Underlying amount: 2,756
Exercise price
Footnotes: F7

NRP transaction Derivative

PHANTOM UNITS

Options Exercise

Transaction value
Shares: +2,505
Change %: +100%
Price
Shares after: 5,010
Date: 10 Feb 2026
Ownership: Direct
Underlying class: COMMON UNITS
Underlying amount: 2,505
Exercise price
Footnotes: F8

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

Common units were issued upon conversion of phantom units previously awarded under the issuer's long-term incentive plan ("LTIP") as further described in notes (5), (6), (7) and (8) below.

Footnote F2

Quintana Holdings LP is a limited partnership controlled by the reporting person. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

Footnote F3

The general partner of Western Pocahontas Properties Limited Partnership is Western Pocahontas GP LLC, a limited liability company controlled by the reporting person. The reporting person also holds indirect limited partner interests in Western Pocahontas Properties Limited Partnership. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

Footnote F4

The general partner of NRP (GP) LP is GP Natural Resource Partners LLC, which is wholly owned by Robertson Coal Management, a limited liability company controlled by the reporting person. The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

Footnote F5

Performance-based units representing the right to receive common units, together with tandem distribution equivalent rights, were awarded in February 2023 under the issuer's LTIP. The phantom units vested on the third anniversary of the grant date and converted into common units on the reporting date based upon the achievement of specified performance goals. Accrued quarterly distributions made during the vesting period were paid in cash to the reporting person on the reporting date.

Footnote F6

Phantom units representing the right to receive common units on a one-for-one basis, together with tandem distribution equivalent rights, were awarded in February 2023 under the issuer's LTIP. One-third of the phantom units vested on the third anniversary of the grant date and converted into common units on the reporting date. Accrued quarterly distributions made during the vesting period were paid in cash to the reporting person on the reporting date.

Footnote F7

Phantom units representing the right to receive common units on a one-for-one basis, together with tandem distribution equivalent rights, were awarded in February 2024 under the issuer's LTIP. One-third of the phantom units vested on the second anniversary of the grant date and converted into common units on the reporting date. Accrued quarterly distributions made during the vesting period were paid in cash to the reporting person on the reporting date. The remaining phantom units under the 2024 award will vest on the third anniversary of the grant date.

Footnote F8

Phantom units representing the right to receive common units on a one-for-one basis, together with tandem distribution equivalent rights, were awarded in February 2025 under the issuer's LTIP. One-third of the phantom units vested on the first anniversary of the grant date and converted into common units on the reporting date. Accrued quarterly distributions made during the vesting period were paid in cash to the reporting person on the reporting date. The remaining phantom units under the 2025 award will vest in substantially equal installments on the second and third anniversaries of the grant date.