| 2023-07-19 | Sale | ProPetro Holding Corp. PUMP | director | 5,000 0.0043% | $10.00 | $50,000 | -11.16% | |
| 2019-04-10 | Sale | Natural Gas Services Group, Inc. NGS | Chief Financial Officer | 701 0.0054% | $18.25 | $12,793 | -32.65% | |
| 2019-04-08 | Sale | Natural Gas Services Group, Inc. NGS | Chief Financial Officer | 3,299 0.0255% | $18.42 | $60,768 | -33.08% | |
| 2017-12-19 | Sale | Natural Gas Services Group, Inc. NGS | Chief Financial Officer | 6,000 0.0464% | $25.23 | $151,380 | -9.25% | |
| 2016-11-17 | Sale | Natural Gas Services Group, Inc. NGS | Chief Financial Officer | 8,000 0.0635% | $26.99 | $215,920 | +0.94% | |
| 2015-12-18 | Sale | Natural Gas Services Group, Inc. NGS | Chief Financial Officer | 8,000 0.0634% | $20.34 | $162,720 | +12.96% | |
| 2015-03-24 | Sale | Natural Gas Services Group, Inc. NGS | Chief Financial Officer | 10,000 0.0799% | $19.95 | $199,500 | +5.66% |