| Filing Date | Insider | Type | 10b5-1 | Net Shares | Ownership change | Avg. Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| 2023-06-30 | Krylov Sergei Director | Purchase | +8,895 | +0.05%18,847,330 | $2.23 | $19,836 | View SEC filing | |
| 2023-06-16 | Wilks Dan H. 10% Owner | Purchase | +8,895 | +0.05%18,847,330 | $2.23 | $19,836 | View SEC filing | |
| 2023-06-16 | Wilks Dan H. 10% Owner | Purchase | +8,604 | +0.05%18,838,435 | $2.18 | $18,759 | View SEC filing | |
| 2023-06-14 | Wilks Dan H. 10% Owner | Purchase | +8,604 | +0.05%17,650,200 | $2.18 | $18,759 | View SEC filing | |
| 2020-09-17 | TOBIAS C RAY EVP, Chief Operating Officer | Sale | -16,603 | -13.65%105,002 | $1.75 | $29,055 | View SEC filing | |
| 2020-03-12 | JUMPER STEPHEN C President/CEO | Purchase | +10,000 | +4.25%245,316 | $1.31 | $13,100 | View SEC filing | |
| 2019-03-13 | Thomas James W EVP, Chief Technical Officer | Purchase | +13,000 | +22.19%71,595 | $3.12 | $40,526 | View SEC filing | |
| 2019-01-18 | BARRETT WILLIAM J Director | Purchase | +18,230 | +2.51%744,065 | $5.76 | $104,984 | View SEC filing | |
| 2018-08-16 | BARRETT WILLIAM J Director | Purchase | +16,600 | +2.23%760,715 | $5.62 | $93,300 | View SEC filing | |
| 2018-08-14 | BARRETT WILLIAM J Director | Purchase | +18,280 | +2.52%744,115 | $5.76 | $105,274 | View SEC filing | |
| 2018-08-10 | BARRETT WILLIAM J Director | Purchase | +50 | +0.01%725,835 | $5.80 | $290 | View SEC filing | |
| 2018-08-08 | BARRETT WILLIAM J Director | Purchase | +1,720 | +0.24%725,785 | $5.80 | $9,976 | View SEC filing | |
| 2018-02-05 | BARRETT WILLIAM J Director | Purchase | +10,000 | +1.50%677,820 | $3.90 | $39,000 | View SEC filing | |
| 2017-12-18 | BARRETT WILLIAM J Director | Purchase | +195 | +0.26%74,444 | $4.68 | $913 | View SEC filing | |
| 2017-12-13 | BARRETT WILLIAM J Director | Purchase | +5,000 | +7.22%74,249 | $4.75 | $23,750 | View SEC filing | |
| 2017-12-12 | BARRETT WILLIAM J Director | Purchase | +5,000 | +7.78%69,249 | $4.90 | $24,500 | View SEC filing | |
| 2017-06-01 | BARRETT WILLIAM J Director | Purchase | +5,000 | +0.75%672,820 | $3.90 | $19,500 | View SEC filing | |
| 2017-05-19 | BARRETT WILLIAM J Director | Purchase | +5,000 | +0.75%667,820 | $4.05 | $20,250 | View SEC filing | |
| 2017-05-18 | BARRETT WILLIAM J Director | Purchase | +5,000 | +0.76%662,820 | $4.20 | $21,000 | View SEC filing | |
| 2017-05-17 | BARRETT WILLIAM J Director | Purchase | +5,000 | +0.77%657,820 | $4.50 | $22,500 | View SEC filing | |
| 2017-05-16 | BARRETT WILLIAM J Director | Purchase | +5,000 | +0.68%657,280 | $4.50 | $22,500 | View SEC filing | |
| 2016-11-16 | Thomas James W EVP, Chief Technical Officer | Sale | -10,000 | -21.50%36,511 | $7.65 | $76,500 | View SEC filing | |
| 2016-09-19 | MCINNES ALLEN T Director | Sale | -3,990 | -1.13%348,985 | $7.02 | $27,992 | View SEC filing | |
| 2016-06-03 | Thomas James W EVP, Chief Technical Officer | Sale | -10,662 | -18.65%46,511 | $7.48 | $79,752 | View SEC filing | |
| 2014-01-02 | WHITENER WAYNE A President and CEO | Sale | -10,000 | -66.67%5,000 | $7.05 | $70,500 | View SEC filing |
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