J Michael Sheen

Insider Trading: Sales

Company	Symbol	Price	Amount	Relationship	Remaining Holdings	Date	Form 4
Oyo Geospace Corp	OYOG	$100.00	1,426	Officer, Director	55,000	2011-03-02	Filing
Oyo Geospace Corp	OYOG	$100.10	169	Officer, Director	55,000	2011-03-01	Filing
Oyo Geospace Corp	OYOG	$102.36	499	Officer, Director	55,000	2011-02-28	Filing
Oyo Geospace Corp	OYOG	$101.24	500	Officer, Director	55,499	2011-02-28	Filing
Oyo Geospace Corp	OYOG	$100.35	3,001	Officer, Director	55,999	2011-02-28	Filing
Oyo Geospace Corp	OYOG	$105.55	658	Officer, Director	55,000	2011-02-25	Filing
Oyo Geospace Corp	OYOG	$104.19	5,705	Officer, Director	55,658	2011-02-25	Filing
Oyo Geospace Corp	OYOG	$103.83	2,637	Officer, Director	61,363	2011-02-25	Filing
Oyo Geospace Corp	OYOG	$107.42	174	Officer, Director	55,000	2011-02-24	Filing
Oyo Geospace Corp	OYOG	$106.15	539	Officer, Director	55,174	2011-02-24	Filing
Oyo Geospace Corp	OYOG	$105.58	220	Officer, Director	55,713	2011-02-24	Filing
Oyo Geospace Corp	OYOG	$104.37	767	Officer, Director	55,933	2011-02-24	Filing
Oyo Geospace Corp	OYOG	$103.49	300	Officer, Director	56,700	2011-02-24	Filing
Oyo Geospace Corp	OYOG	$108.74	2,000	Officer, Director	55,000	2011-02-23	Filing
Oyo Geospace Corp	OYOG	$108.73	2,000	Officer, Director	55,000	2011-02-22	Filing
Oyo Geospace Corp	OYOG	$108.18	68	Officer, Director	55,000	2011-02-18	Filing
Oyo Geospace Corp	OYOG	$107.47	1,932	Officer, Director	55,068	2011-02-18	Filing
Oyo Geospace Corp	OYOG	$106.99	2,000	Officer, Director	55,000	2011-02-17	Filing
Oyo Geospace Corp	OYOG	$50.00	1,793	Officer, Director	55,000	2010-09-20	Filing
Oyo Geospace Corp	OYOG	$49.82	500	Officer, Director	56,793	2010-09-20	Filing