Stock Trading History of Wait Earl R

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Wait Earl R since year 2005. The trader's CIK number is 1196479. At the time of this reporting, Wait Earl R is the VP/Accounting; Treasurer of Natural Gas Services Group Inc . (stock ticker symbol NGS). See this page for all insider trading activities at Natural Gas Services Group Inc .

Stock purchases, sales, and option exercises reported by insider *Wait Earl R* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-09-12	NGS	Natural Gas Services Group Inc	Option Exercise	3,000	3.25	9,750
2008-06-13	NGS	Natural Gas Services Group Inc	Sale	5,000	30.00	150,012
2008-05-09	NGS	Natural Gas Services Group Inc	Sale	2,500	26.32	65,807
2008-02-26	NGS	Natural Gas Services Group Inc	Sale	2,500	22.58	56,462
2007-11-13	NGS	Natural Gas Services Group Inc	Sale	2,500	18.01	45,017
2007-09-14	NGS	Natural Gas Services Group Inc	Sale	2,500	16.11	40,264
2006-09-15	NGS	Natural Gas Services Group Inc	Purchase	350	12.49	4,371
2005-09-06	NGS	Natural Gas Services Group Inc	Sale	30,000	20.53	615,900

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Wait Earl R (VP/Accounting; Treasurer of Natural Gas Services Group Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.