| Name | Hold | Shares | Value | Type |
|---|---|---|---|---|
| Wilks Brothers LLC | 85.99% | 26,703,332 | $79.31M | Insider |
| Beddow Capital Management Inc | 6.99% | 2,171,357 | $6.45M | Insider |
| William J. 1. Barrett | 2.78% | 864,676 | $2.57M | Insider |
| William C. Hurtt Jr. | 2.44% | 757,475 | $2.25M | Insider |
| Herbert M. Gardner | 2.11% | 656,503 | $1.95M | Insider |
| Edward L. Flynn | 1.91% | 593,653 | $1.76M | Insider |
| Allen T. McInnes | 1.25% | 386,937 | $1.15M | Insider |
| William Anthony Clark | 0.49% | 151,850 | $450.99k | Insider |
| Stephanie P. Hurtt | 0.38% | 118,001 | $350.46k | Insider |
| Christina W. Hagan | 0.37% | 115,908 | $344.25k | Insider |