Based on data from the past 90 days ending February 19, 2026, Mach Natural Resources's three largest insider shareholders are Director William Wallace Mcmullen (74.85Mn shares), Director Tom L. Ward (26.97Mn shares), TenPercentOwner Anderson Capital Advisors Lp Kayne (18.96Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| William Wallace Mcmullen | 74,850,632 | 10 Dec, 2025 | |
| Tom L. Ward | Nan | 26,968,448 | 31 Oct, 2023 |
| Anderson Capital Advisors Lp Kayne | 18,960,034 | 11 Feb, 2026 | |
| Daniel T Jr. Reineke | Nan | 767,054 | 31 Oct, 2023 |
| Kevin R. White | Nan | 455,871 | 11 Feb, 2026 |
| Michael E Reel | Nan | 85,816 | 11 Feb, 2026 |
| Edgar R. Jr. Giesinger | 29,111 | 30 Oct, 2025 | |
| Frank A Keating | 29,111 | 30 Oct, 2025 | |
| Stephen C Perich | 29,111 | 30 Oct, 2025 | |
| Christopher Burn | 13,587 | 05 Jan, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 11 Feb, 2026 | Kevin R. White | Common Units | D | 5,627 | $12.62 | 455,871 | D | F |
| 11 Feb, 2026 | Michael E Reel | Common Units | D | 2,532 | $12.62 | 85,816 | D | F |
| 09 Feb, 2026 | Anderson Capital Advisors Lp Kayne | Common Units | D | 227,547 | $14.56 | 18,960,034 | I | J |
| 09 Feb, 2026 | Kevin R. White | Common Units | A | 11,886 | $12.62 | 461,498 | D | A |
| 09 Feb, 2026 | Michael E Reel | Common Units | A | 5,151 | $12.62 | 88,348 | D | A |
| 01 Jan, 2026 | Christopher Burn | Common Units | A | 13,587 | $11.04 | 13,587 | D | A |
| 09 Dec, 2025 | William Wallace Mcmullen | Common Units | A | 17,500 | $12.32 | 74,850,632 | I | P |
| 09 Dec, 2025 | William Wallace Mcmullen | - | - | 74,850,632 | I | |||
| 08 Dec, 2025 | William Wallace Mcmullen | Common Units | A | 12,500 | $12.53 | 74,833,132 | I | P |
| 26 Nov, 2025 | Tom L. Ward | Common Units | A | 40,000 | $11.63 | 13,218,411 | I | P |
| 25 Nov, 2025 | Tom L. Ward | Common Units | A | 43,660 | $11.45 | 13,218,411 | I | P |
| 17 Nov, 2025 | Tom L. Ward | - | - | 421,100 | I | |||
| 17 Nov, 2025 | Tom L. Ward | Common Units | A | 41,740 | $11.98 | 421,100 | I | P |
| 14 Nov, 2025 | Tom L. Ward | Common Units | A | 41,630 | $12.01 | 13,218,411 | I | P |
| 14 Nov, 2025 | William Wallace Mcmullen | - | - | 74,820,632 | I | |||
| 14 Nov, 2025 | William Wallace Mcmullen | Common Units | A | 4,608 | $11.85 | 74,820,632 | I | P |
| 28 Oct, 2025 | Tom L. Ward | Common Units | D | 10,722 | $12.46 | 13,218,411 | I | F |
| 28 Oct, 2025 | Tom L. Ward | - | - | 13,218,411 | I | |||
| 28 Oct, 2025 | Frank A Keating | Common Units | A | 12,039 | $12.46 | 29,111 | D | A |
| 28 Oct, 2025 | Kevin R. White | Common Units | D | 10,107 | $12.46 | 449,612 | D | F |