Home > Insider Trading > Filing (0001195890-11-000001)

Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
730000	Supertex Inc	SUPX	Semiconductors & Related Devices (3674)	942328535

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1195890	K C Benedict Choy		Senior Vp, Tech Development	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2011-08-03	10,000	$17.06	178,455	No	4	M	Direct
Common Stock	Disposition	2011-08-03	200	$20.03	178,255	No	4	S	Direct
Common Stock	Disposition	2011-08-03	200	$20.06	178,055	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.02	177,955	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.00	177,855	No	4	S	Direct
Common Stock	Disposition	2011-08-03	400	$20.02	177,455	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.03	177,355	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.00	177,255	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.02	177,155	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.00	177,055	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.03	176,955	No	4	S	Direct
Common Stock	Disposition	2011-08-03	1,500	$19.95	175,455	No	4	S	Direct
Common Stock	Disposition	2011-08-03	59	$20.04	175,396	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$19.95	175,296	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$19.98	175,196	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$20.04	175,096	No	4	S	Direct
Common Stock	Disposition	2011-08-03	100	$19.98	174,996	No	4	S	Direct
Common Stock	Disposition	2011-08-03	190	$20.04	174,806	No	4	S	Direct
Common Stock	Disposition	2011-08-03	6,351	$19.95	168,455	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	ISO stock options (to exercise common stock)	Disposition	2011-08-03	5,000	$17.06	5,000	$17.06
Common Stock	ISO stock options (to exercise common stock)	Disposition	2011-08-03	5,000	$17.06	5,000	$17.06

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
70,000	2008-09-01	2011-09-01	No	4	M	Direct
65,000	2009-09-01	2011-09-01	No	4	M	Direct

Footnotes

NQ Option (to exercise common stock). Exercise Price: $35.8600. Shares Granted: 15,000. Shares Exercisable: 9,000. 3,000 shares exercisable on 9/4/2011. 3,000 shares exercisable on 9/4/2012. Expiration Date: 9/4/2017. Held Direct.
NQ Option (to exercise common stock). Exercise Price: $20.8500. Shares Granted: 50,000. Shares Exercisable: 20,000. 10,000 shares exercisable on 12/1/2011. 10,000 shares exercisable on 12/1/2012. 10,000 shares exercisable on 12/1/2013. Expiration Date: 12/1/2018. Held Direct.