Stock Trading History of Jumper Stephen C

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 Jumper Stephen C since year 2005. The trader's CIK number is 1210224. At the time of this reporting, Jumper Stephen C is the President/CEO of Dawson Geophysical Co (stock ticker symbol DWSN).

Stock purchases, sales, and option exercises reported by *Jumper Stephen C* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-08-06	DWSN	Dawson Geophysical Co	Sale	10,000	64.28	642,800
2007-08-06	DWSN	Dawson Geophysical Co	Option Exercise	10,000	5.21	52,100
2007-03-19	DWSN	Dawson Geophysical Co	Sale	10,000	46.23	462,341
2007-03-19	DWSN	Dawson Geophysical Co	Option Exercise	10,000	7.41	74,065
2006-06-01	DWSN	Dawson Geophysical Co	Sale	6,500	34.18	222,170
2006-06-01	DWSN	Dawson Geophysical Co	Sale	6,500	34.18	222,170
2006-03-24	DWSN	Dawson Geophysical Co	Option Exercise	10,000	8.65	86,500

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 Jumper Stephen C (President/CEO of Dawson Geophysical Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.