Corbin J. Robertson Jr.
Chairman and CEO at Natural Resource Partners LP Limited Partnership
Sits on 2 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 7 years
- Director since
- 2023
7 years of board service in total across 2 boards, counting each seat separately. Longest: Natural Resource Partners LP Limited Partnership, 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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KLX Energy Services Holdings Inc. May 9, 202463.2%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 16, 2026 | KLX Energy Services Holdings Inc. | Option exercise | +38,694 | $1.49 | $57,654 |
| Sep 14, 2026 | KLX Energy Services Holdings Inc. | Option exercise | +225,353 | $1.49 | $335,776 |
| Feb 10, 2026 | Natural Resource Partners LP Limited Partnership | Option exercise | +72,849 | — | — |
| Feb 10, 2026 | Natural Resource Partners LP Limited Partnership | Shares withheld for tax | −28,666 | $123.04 | $3,527,065 |
| Jan 29, 2026 | KLX Energy Services Holdings Inc. | Grant or award | +14,481 | — | — |
| Dec 31, 2025 | Natural Resource Partners LP Limited Partnership | Other | −794 | — | — |
| Feb 11, 2025 | Natural Resource Partners LP Limited Partnership | Option exercise | +58,050 | — | — |
| Feb 11, 2025 | Natural Resource Partners LP Limited Partnership | Shares withheld for tax | −22,843 | $102.72 | $2,346,433 |
| Feb 1, 2025 | KLX Energy Services Holdings Inc. | Grant or award | +5,658 | — | — |
| Feb 15, 2024 | Natural Resource Partners LP Limited Partnership | Option exercise | +73,529 | — | — |
| Feb 15, 2024 | Natural Resource Partners LP Limited Partnership | Shares withheld for tax | −28,934 | $86.91 | $2,514,654 |
| Feb 1, 2024 | KLX Energy Services Holdings Inc. | Grant or award | +5,658 | — | — |
| Feb 15, 2023 | Natural Resource Partners LP Limited Partnership | Option exercise | +69,768 | — | — |
| Feb 15, 2023 | Natural Resource Partners LP Limited Partnership | Shares withheld for tax | −24,057 | $54.08 | $1,301,003 |
| Feb 1, 2023 | KLX Energy Services Holdings Inc. | Grant or award | +2,030 | — | — |
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