| 2010-12-13 | Sale | Natural Gas Services Group, Inc. NGS | VP/Accounting; Treasurer | 25,280 0.2104% | $17.67 | $446,738 | -5.19% | |
| 2010-10-13 | Sale | Natural Gas Services Group, Inc. NGS | VP/Accounting; Treasurer | 27,280 0.2475% | $17.69 | $482,476 | +3.79% | |
| 2010-06-15 | Sale | Natural Gas Services Group, Inc. NGS | VP/Accounting; Treasurer | 4,000 0.0329% | $17.16 | $68,640 | -3.54% | |
| 2010-06-11 | Sale | Natural Gas Services Group, Inc. NGS | VP/Accounting; Treasurer | 5,000 0.0408% | $16.28 | $81,400 | +1.12% | |
| 2009-12-15 | Sale | Natural Gas Services Group, Inc. NGS | VP/Accounting; Treasurer | 2,720 0.0226% | $18.00 | $48,960 | -10.23% | |
| 2008-06-13 | Sale | Natural Gas Services Group, Inc. NGS | VP - Accounting and Treasurer | 10,000 0.0824% | $30.00 | $300,024 | -61.45% | |
| 2008-05-09 | Sale | Natural Gas Services Group, Inc. NGS | VP - Accounting and Treasurer | 5,000 0.0405% | $26.32 | $131,615 | -56.07% | |
| 2008-02-26 | Sale | Natural Gas Services Group, Inc. NGS | VP - Accounting and Treasurer | 5,000 0.0402% | $22.59 | $112,925 | -11.28% | |
| 2007-11-13 | Sale | Natural Gas Services Group, Inc. NGS | VP - Accounting and Treasurer | 5,000 0.0411% | $18.00 | $90,009 | +15.76% | |
| 2007-09-14 | Sale | Natural Gas Services Group, Inc. NGS | VP - Accounting and Treasurer | 5,000 0.0406% | $16.11 | $80,528 | +28% | |
| 2006-09-15 | Natural Gas Services Group, Inc. NGS | VP - Accounting & Treasurer | 700 0.0058% | $12.49 | $8,743 | +15.24% | ||
| 2005-09-06 | Sale | Natural Gas Services Group, Inc. NGS | CFO & Treasurer | 14,000 0.1795% | $21.26 | $297,610 | -18.97% | |
| 2005-09-02 | Sale | Natural Gas Services Group, Inc. NGS | CFO & Treasurer | 46,000 0.6013% | $20.23 | $930,745 | -13.12% | |
| 2004-11-16 | Natural Gas Services Group, Inc. NGS | CFO & Treasurer | 1,040 0.0184% | $8.86 | $9,216 | +20.65% |