J Michael Sheen

Insider Trading: Sales

Company	Symbol	Price	Amount	Relationship	Remaining Holdings	Date	Form 4
Oyo Geospace Corp	OYOG	$49.65	500	Officer, Director	57,293	2010-09-20	Filing
Oyo Geospace Corp	OYOG	$50.31	500	Officer, Director	55,000	2010-09-17	Filing
Oyo Geospace Corp	OYOG	$50.05	317	Officer, Director	55,500	2010-09-17	Filing
Oyo Geospace Corp	OYOG	$50.00	985	Officer, Director	55,817	2010-09-17	Filing
Oyo Geospace Corp	OYOG	$49.51	150	Officer, Director	56,802	2010-09-17	Filing
Oyo Geospace Corp	OYOG	$49.50	350	Officer, Director	56,952	2010-09-17	Filing
Oyo Geospace Corp	OYOG	$50.50	305	Officer, Director	55,000	2010-09-16	Filing
Oyo Geospace Corp	OYOG	$50.10	51	Officer, Director	55,305	2010-09-16	Filing
Oyo Geospace Corp	OYOG	$50.00	3,630	Officer, Director	55,356	2010-09-16	Filing
Oyo Geospace Corp	OYOG	$49.61	500	Officer, Director	58,986	2010-09-16	Filing
Oyo Geospace Corp	OYOG	$49.50	500	Officer, Director	59,486	2010-09-16	Filing
Oyo Geospace Corp	OYOG	$50.05	628	Officer, Director	55,000	2010-09-15	Filing
Oyo Geospace Corp	OYOG	$50.04	36	Officer, Director	55,628	2010-09-15	Filing
Oyo Geospace Corp	OYOG	$50.00	1,888	Officer, Director	55,664	2010-09-15	Filing
Oyo Geospace Corp	OYOG	$49.15	500	Officer, Director	57,552	2010-09-15	Filing
Oyo Geospace Corp	OYOG	$49.11	500	Officer, Director	58,052	2010-09-15	Filing
Oyo Geospace Corp	OYOG	$49.41	500	Officer, Director	55,000	2010-09-14	Filing
Oyo Geospace Corp	OYOG	$49.25	200	Officer, Director	55,500	2010-09-14	Filing
Oyo Geospace Corp	OYOG	$49.00	14	Officer, Director	55,700	2010-09-14	Filing
Oyo Geospace Corp	OYOG	$48.75	286	Officer, Director	55,714	2010-09-14	Filing