As of September 29, 2026, the three largest insider holders of GPOR are Point Capital L.P. Silver (Director, 2.61Mn shares), John K. Reinhart (President Ceo, 76.16K shares), Timothy J. Cutt (Executive Chairman, 27.01K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | John K. Reinhart | President Ceo | 76,164 | 0 | 76,164 | 32.3% | 03 Mar, 2026 |
| 2 | Timothy J. Cutt | Executive Chairman | 27,013 | 0 | 27,013 | 11.4% | 24 Sep, 2026 |
| 3 | Domenic J Jr Dell'Osso | President Ceo | 24,349 | 0 | 24,349 | 10.3% | 10 Aug, 2026 |
| 4 | William J Buese | Chief Financial Officer | 17,405 | 0 | 17,405 | 7.4% | 22 Jul, 2022 |
| 5 | Michael L Hodges | Evp Cfo | 16,993 | 0 | 16,993 | 7.2% | 03 Apr, 2026 |
| 6 | Matthew Rucker | Evp Coo | 14,447 | 0 | 14,447 | 6.1% | 03 Mar, 2026 |
| 7 | Patrick K. Craine | Clao And Corp Secretary | 11,060 | 0 | 11,060 | 4.7% | 06 Mar, 2026 |
| 8 | Michael Sluiter | Svp Of Reservoir Engineering | 10,338 | 0 | 10,338 | 4.4% | 01 Jun, 2026 |
| 9 | Robert John Moses | Svp, Operations Drilling | 7,535 | 0 | 7,535 | 3.2% | 22 Jul, 2022 |
| 10 | Lester Zitkus | Svp, Land | 5,948 | 0 | 5,948 | 2.5% | 26 Mar, 2026 |
| 11 | David D Wolf | Director | 5,490 | 0 | 5,490 | 2.3% | 01 Jun, 2026 |
| 12 | Jason Joseph Martinez | Director | 4,916 | 0 | 4,916 | 2.1% | 01 Jun, 2026 |
| 13 | Mary Shafer-Malicki | Director | 4,164 | 0 | 4,164 | 1.8% | 01 Jun, 2026 |
| 14 | Jean Marie Powers | Director | 4,129 | 0 | 4,129 | 1.7% | 01 Jun, 2026 |
| 15 | Matthew Willrath | Vp Cao | 2,130 | 0 | 2,130 | 0.9% | 03 Sep, 2026 |
| 16 | Bradley Neil Secrist | Senior Vice President Land | 1,900 | 0 | 1,900 | 0.8% | 12 Aug, 2026 |
| 17 | David A Reganato | Director | 1,028 | 0 | 1,028 | 0.4% | 01 Jun, 2026 |
| 18 | Point Capital L.P. Silver | Director, TenPercentOwner | 0 | 1,028 | 1,028 | 0.4% | 01 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 24 Sep, 2026 | Timothy J. Cutt | Director | Disposed S | 2,500 | $158.98 | $397.45K | 27,013 | Direct |
| 02 Sep, 2026 | Matthew Willrath | Vp Cao | Disposed S | 325 | $182.69 | $59.37K | 2,130 | Direct |
| 07 Aug, 2026 | Bradley Neil Secrist | Senior Vice President Land | Disposed F | 132 | $158.45 | $20.92K | 1,900 | Direct |
| 07 Aug, 2026 | Domenic J Jr Dell'Osso | President Ceo | Acquired P | 1,600 | $160.61 | $256.98K | 24,349 | Direct |
| 28 May, 2026 | Point Capital L.P. Silver | Director, TenPercentOwner | Acquired A | 1,028 | $0.00 | $0 | 1,028 | Indirect |
| 28 May, 2026 | David D Wolf | Director | Acquired A | 1,028 | $0.00 | $0 | 5,490 | Direct |
| 28 May, 2026 | Mary Shafer-Malicki | Director | Acquired A | 1,028 | $0.00 | $0 | 4,164 | Direct |
| 28 May, 2026 | Timothy J. Cutt | Director | Acquired A | 1,028 | $0.00 | $0 | 29,513 | Direct |
| 28 May, 2026 | David A Reganato | Director | Acquired A | 1,028 | $0.00 | $0 | 1,028 | Direct |
| 28 May, 2026 | Michael Sluiter | Svp Of Reservoir Engineering | Acquired A | 1,307 | $0.00 | $0 | 10,338 | Direct |
| 28 May, 2026 | Domenic J Jr Dell'Osso | President Ceo | Acquired A | 22,749 | $0.00 | $0 | 22,749 | Direct |
| 28 May, 2026 | Jason Joseph Martinez | Director | Acquired A | 1,028 | $0.00 | $0 | 4,916 | Direct |
| 28 May, 2026 | Jean Marie Powers | Director | Acquired A | 1,028 | $0.00 | $0 | 4,129 | Direct |
| 26 May, 2026 | Matthew Willrath | Vp Cao | Disposed F | 134 | $178.22 | $23.88K | 2,455 | Direct |
| 03 Apr, 2026 | Michael L Hodges | Evp Cfo | Disposed F | 1,480 | $207.00 | $306.36K | 16,993 | Direct |
| 02 Apr, 2026 | Jason Joseph Martinez | Director | Disposed S | 400 | $213.40 | $85.36K | 3,888 | Direct |
| 24 Mar, 2026 | Lester Zitkus | Svp, Land | Disposed S | 1,873 | $213.90 | $400.63K | 5,948 | Direct |
| 09 Mar, 2026 | Timothy J. Cutt | Director | Acquired A | 4,730 | $0.00 | $0 | 28,485 | Direct |
| 05 Mar, 2026 | Michael Sluiter | Svp Of Reservoir Engineering | Disposed S | 2,055 | $213.10 | $437.92K | 9,031 | Direct |
| 05 Mar, 2026 | Matthew Willrath | Vp Cao | Disposed S | 497 | $215.28 | $106.99K | 2,589 | Direct |