| 2019-06-04 | Sale | Natural Gas Services Group, Inc. NGS | director | 3,356 0.0253% | $15.10 | $50,659 | -25.08% | |
| 2018-03-13 | Sale | Natural Gas Services Group, Inc. NGS | director | 2,500 0.0201% | $27.29 | $68,220 | -18.1% | |
| 2017-06-20 | Sale | Natural Gas Services Group, Inc. NGS | director | 2,540 0.0199% | $23.60 | $59,944 | +7.45% | |
| 2016-06-23 | Sale | Natural Gas Services Group, Inc. NGS | director | 2,500 0.0199% | $24.35 | $60,875 | +8.58% |