Stock Trading History of Sheen Michael J

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 Sheen Michael J since year 2005. The trader's CIK number is 1049654. At the time of this reporting, Sheen Michael J is the SVP & Chief Technical Officer of Oyo Geospace Corp . (stock ticker symbol OYOG). See this page for all insider trading activities at Oyo Geospace Corp .

Stock purchases, sales, and option exercises reported by insider *Sheen Michael J* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-07-18	OYOG	Oyo Geospace Corp	Option Exercise	10,000	14.56	145,600
2007-08-31	OYOG	Oyo Geospace Corp	Sale	425	73.65	31,301
2007-08-30	OYOG	Oyo Geospace Corp	Sale	2,908	73.43	213,534
2007-08-29	OYOG	Oyo Geospace Corp	Sale	6,667	72.15	481,024
2007-08-31	OYOG	Oyo Geospace Corp	Option Exercise	425	14.00	5,950
2007-08-30	OYOG	Oyo Geospace Corp	Option Exercise	2,908	14.00	40,712
2007-08-29	OYOG	Oyo Geospace Corp	Option Exercise	6,667	14.00	93,338
2007-08-31	OYOG	Oyo Geospace Corp	Purchase	10,000	75.58	755,800

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 Sheen Michael J (SVP & Chief Technical Officer of Oyo Geospace Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.