Stock Trading History of Yadon Richard L

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 Yadon Richard L since year 2005. The trader's CIK number is 1219474. At the time of this reporting, Yadon Richard L is the Director 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 *Yadon Richard L* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-06-09	NGS	Natural Gas Services Group Inc	Sale	20,000	30.00	600,000
2005-09-12	NGS	Natural Gas Services Group Inc	Sale	10,000	23.39	233,880
2005-08-31	NGS	Natural Gas Services Group Inc	Sale	15,000	19.52	292,785

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 Yadon Richard L (Director of Natural Gas Services Group Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.