As of September 29, 2026, the three largest insider holders of NBR are Partners Inc Varde (TenPercentOwner, 1.41Mn shares), Anthony G Petrello (Chairman, President Ceo, 450.72K shares), William J Restrepo (Chief Financial Officer, 124.09K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Partners Inc Varde | TenPercentOwner | 0 | 1,406,052 | 1,406,052 | 64.8% | 15 Sep, 2025 |
| 2 | Anthony G Petrello | Chairman, President Ceo | 155,930 | 294,793 | 450,723 | 20.8% | 05 Jan, 2026 |
| 3 | William J Restrepo | Chief Financial Officer | 124,091 | 0 | 124,091 | 5.7% | 05 Jan, 2026 |
| 4 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | 44,839 | 0 | 44,839 | 2.1% | 19 Feb, 2026 |
| 5 | John Yearwood | Director | 29,768 | 0 | 29,768 | 1.4% | 03 Jun, 2026 |
| 6 | Mark D Andrews | Vp Corporate Secretary | 26,101 | 0 | 26,101 | 1.2% | 11 Feb, 2026 |
| 7 | James R Crane | Director | 18,937 | 0 | 18,937 | 0.9% | 03 Jun, 2026 |
| 8 | Michael C Linn | Director | 18,937 | 0 | 18,937 | 0.9% | 03 Jun, 2026 |
| 9 | Tanya S Beder | Director | 17,859 | 0 | 17,859 | 0.8% | 03 Jun, 2026 |
| 10 | Anthony R Chase | Director | 15,408 | 0 | 15,408 | 0.7% | 03 Jun, 2026 |
| 11 | John P Kotts | Director | 13,339 | 0 | 13,339 | 0.6% | 03 Jun, 2026 |
| 12 | David J Tudor | Director | 5,264 | 0 | 5,264 | 0.2% | 28 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 28 Aug, 2026 | David J Tudor | Director | Disposed S | 3,200 | $92.30 | $295.36K | 5,264 | Direct |
| 02 Jun, 2026 | Anthony R Chase | Director | Acquired A | 1,324 | $0.00 | $0 | 15,408 | Direct |
| 02 Jun, 2026 | John P Kotts | Director | Acquired A | 1,324 | $0.00 | $0 | 13,339 | Direct |
| 02 Jun, 2026 | James R Crane | Director | Acquired A | 1,324 | $0.00 | $0 | 18,937 | Direct |
| 02 Jun, 2026 | John Yearwood | Director | Acquired A | 1,324 | $0.00 | $0 | 29,768 | Direct |
| 02 Jun, 2026 | David J Tudor | Director | Acquired A | 1,324 | $0.00 | $0 | 8,464 | Direct |
| 02 Jun, 2026 | Michael C Linn | Director | Acquired A | 1,324 | $0.00 | $0 | 18,937 | Direct |
| 02 Jun, 2026 | Tanya S Beder | Director | Acquired A | 1,324 | $0.00 | $0 | 17,859 | Direct |
| 20 Feb, 2026 | John Yearwood | Director | Acquired P | 6,410 | $78.12 | $500.75K | 28,444 | Direct |
| 18 Feb, 2026 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | Disposed F | 314 | $71.91 | $22.58K | 45,001 | Direct |
| 19 Feb, 2026 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | Disposed F | 162 | $75.30 | $12.20K | 44,839 | Direct |
| 15 Feb, 2026 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | Disposed F | 175 | $68.10 | $11.92K | 45,452 | Direct |
| 15 Feb, 2026 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | Disposed F | 137 | $68.10 | $9.33K | 45,315 | Direct |
| 09 Feb, 2026 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | Acquired A | 3,905 | $0.00 | $0 | 45,821 | Direct |
| 09 Feb, 2026 | Mark D Andrews | Vp Corporate Secretary | Acquired A | 1,775 | $0.00 | $0 | 21,530 | Direct |
| 11 Feb, 2026 | Rodriguez Miguel Angel Rodriguez | Chief Financial Officer | Disposed F | 194 | $68.34 | $13.26K | 45,627 | Direct |
| 09 Feb, 2026 | Mark D Andrews | Vp Corporate Secretary | Acquired A | 4,571 | $0.00 | $0 | 26,101 | Direct |
| 31 Dec, 2025 | Mark D Andrews | Corporate Secretary | Disposed D | 1,582 | $0.00 | $0 | 18,113 | Direct |
| 31 Dec, 2025 | Anthony G Petrello | Chairman, President Ceo | Disposed G | 18,000 | $0.00 | $0 | 294,793 | Indirect |
| 01 Jan, 2026 | William J Restrepo | Other | Acquired M | 17,105 | $0.00 | $0 | 128,434 | Direct |