J Michael Sheen

Insider Trading: Sales

Company	Symbol	Price	Amount	Relationship	Remaining Holdings	Date	Form 4
Oyo Geospace Corp	OYOG	$104.76	1,163	Officer, Director	44,836	2011-07-07	Filing
Oyo Geospace Corp	OYOG	$102.34	28	Officer, Director	45,999	2011-07-07	Filing
Oyo Geospace Corp	OYOG	$104.19	2,000	Officer, Director	46,027	2011-07-06	Filing
Oyo Geospace Corp	OYOG	$103.24	5,000	Officer, Director	48,027	2011-07-05	Filing
Oyo Geospace Corp	OYOG	$102.24	2,000	Officer, Director	53,027	2011-07-05	Filing
Oyo Geospace Corp	OYOG	$101.43	886	Officer, Director	55,027	2011-07-05	Filing
Oyo Geospace Corp	OYOG	$100.08	1,114	Officer, Director	55,913	2011-07-05	Filing
Oyo Geospace Corp	OYOG	$101.00	2,000	Officer, Director	55,000	2011-07-01	Filing
Oyo Geospace Corp	OYOG	$100.14	2,000	Officer, Director	57,000	2011-07-01	Filing
Oyo Geospace Corp	OYOG	$100.03	2,000	Officer, Director	55,000	2011-06-30	Filing
Oyo Geospace Corp	OYOG	$100.05	2,000	Officer, Director	55,000	2011-06-29	Filing
Oyo Geospace Corp	OYOG	$100.00	505	Officer, Director	55,000	2011-06-28	Filing
Oyo Geospace Corp	OYOG	$100.38	1,000	Officer, Director	55,000	2011-04-05	Filing
Oyo Geospace Corp	OYOG	$100.14	640	Officer, Director	55,000	2011-04-04	Filing
Oyo Geospace Corp	OYOG	$100.00	300	Officer, Director	55,000	2011-03-09	Filing
Oyo Geospace Corp	OYOG	$100.13	3,643	Officer, Director	55,000	2011-03-08	Filing
Oyo Geospace Corp	OYOG	$101.14	2,192	Officer, Director	55,000	2011-03-07	Filing
Oyo Geospace Corp	OYOG	$100.34	1,098	Officer, Director	57,192	2011-03-07	Filing
Oyo Geospace Corp	OYOG	$100.05	2,000	Officer, Director	55,000	2011-03-04	Filing
Oyo Geospace Corp	OYOG	$100.14	4,000	Officer, Director	55,000	2011-03-03	Filing