Stock Trading History of Dawson L Decker

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 Dawson L Decker since year 2005. The trader's CIK number is 1210293. At the time of this reporting, Dawson L Decker is the Director of Dawson Geophysical Co (stock ticker symbol DWSN).

Stock purchases, sales, and option exercises reported by *Dawson L Decker* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-02-20	DWSN	Dawson Geophysical Co	Sale	2,434	40.50	98,577
2007-02-21	DWSN	Dawson Geophysical Co	Sale	13,824	42.54	588,107
2007-02-14	DWSN	Dawson Geophysical Co	Sale	10,572	42.34	447,660
2007-02-13	DWSN	Dawson Geophysical Co	Sale	30,000	42.16	1,264,746
2007-02-12	DWSN	Dawson Geophysical Co	Sale	35,766	42.00	1,502,250
2007-02-09	DWSN	Dawson Geophysical Co	Sale	30,000	41.98	1,259,277
2007-02-07	DWSN	Dawson Geophysical Co	Sale	30,000	42.45	1,273,551
2007-02-08	DWSN	Dawson Geophysical Co	Sale	125,100	42.14	5,271,613

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 Dawson L Decker (Director of Dawson Geophysical Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.