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Filing Details

Accession Number:: 0001351519-10-000004
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-06-15 13:00:00
Reporting Period:: 2010-06-14

Filing Date:: 2010-06-15
Accepted Time:: 2010-06-15 19:55:16
SEC Url:: Form 4 Filing

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
1351519	Ahmed Masood	1235 Bordeaux Dr. Sunnyvale CA 94089	Vp, Marketing	No	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-06-14	3,791	$21.75	15,791	No	4	M	Direct
Common Stock	Acquisiton	2010-06-14	4,209	$21.75	20,000	No	4	M	Direct
Common Stock	Acquisiton	2010-06-14	2,000	$17.39	22,000	No	4	M	Direct
Common Stock	Acquisiton	2010-06-14	5,000	$20.85	27,000	No	4	M	Direct
Common Stock	Disposition	2010-06-14	90	$26.20	26,910	No	4	S	Direct
Common Stock	Disposition	2010-06-14	200	$25.75	26,710	No	4	S	Direct
Common Stock	Disposition	2010-06-14	378	$25.92	26,332	No	4	S	Direct
Common Stock	Disposition	2010-06-14	200	$25.95	26,132	No	4	S	Direct
Common Stock	Disposition	2010-06-14	100	$26.14	26,032	No	4	S	Direct
Common Stock	Disposition	2010-06-14	108	$25.87	25,924	No	4	S	Direct
Common Stock	Disposition	2010-06-14	100	$26.19	25,824	No	4	S	Direct
Common Stock	Disposition	2010-06-14	400	$25.63	25,424	No	4	S	Direct
Common Stock	Disposition	2010-06-14	102	$25.60	25,322	No	4	S	Direct
Common Stock	Disposition	2010-06-14	10	$26.08	25,312	No	4	S	Direct
Common Stock	Disposition	2010-06-14	1,000	$25.90	24,312	No	4	S	Direct
Common Stock	Disposition	2010-06-14	500	$25.72	23,812	No	4	S	Direct
Common Stock	Disposition	2010-06-14	100	$25.77	23,712	No	4	S	Direct
Common Stock	Disposition	2010-06-14	100	$25.76	23,612	No	4	S	Direct
Common Stock	Disposition	2010-06-14	2,901	$25.85	20,711	No	4	S	Direct
Common Stock	Disposition	2010-06-14	600	$25.73	20,111	No	4	S	Direct
Common Stock	Disposition	2010-06-14	711	$25.70	19,400	No	4	S	Direct
Common Stock	Disposition	2010-06-14	400	$25.62	19,000	No	4	S	Direct
Common Stock	Disposition	2010-06-14	200	$25.66	18,800	No	4	S	Direct
Common Stock	Disposition	2010-06-14	1,600	$25.50	17,200	No	4	S	Direct
Common Stock	Disposition	2010-06-14	100	$25.71	17,100	No	4	S	Direct
Common Stock	Disposition	2010-06-14	1,000	$25.53	16,100	No	4	S	Direct
Common Stock	Disposition	2010-06-14	998	$25.64	15,102	No	4	S	Direct
Common Stock	Disposition	2010-06-14	200	$25.51	14,902	No	4	S	Direct
Common Stock	Disposition	2010-06-14	300	$25.54	14,602	No	4	S	Direct
Common Stock	Disposition	2010-06-14	2,602	$25.43	12,000	No	4	S	Direct

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

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	ISO stock options (to exercise common stock)	Disposition	2010-06-14	3,791	$21.75	3,791	$21.75
Common Stock	NQ Stock Options (to exercise common stock)	Disposition	2010-06-14	4,209	$21.75	4,209	$21.75
Common Stock	NQ Stock Options (to exercise common stock)	Disposition	2010-06-14	2,000	$17.39	2,000	$17.39
Common Stock	NQ Stock Options (to exercise common stock)	Disposition	2010-06-14	5,000	$20.85	5,000	$20.85

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
44,209	2009-12-01	2011-12-01	No	4	M	Direct
40,000	2007-12-01	2011-12-01	No	4	M	Direct
38,000	2008-06-01	2012-06-01	No	4	M	Direct
33,000	2009-12-01	2018-12-01	No	4	M	Direct

Footnotes

ISO Option (to exercise common stock). Exercise Price: $33.67. Shares Granted: 4,900. Shares Exercisable: 2,450. 2,450 shares Exercisable 3/1/2011. Expiration Date: 3/1/2013. Held Direct.
NQ Option (to exercise common stock). Exercise Price: $33.67. Shares Granted: 8,100. Shares Exercisable: 3,550. 4,550 shares Exercisable 3/1/2011. Expiration Date: 3/1/2013. Held Direct.
NQ Option (to exercise common stock). Exercise price: $20.85. Shares granted: 25,000. Currently exercisable and exercising: 5,000. 5,000 shares exercisable on 12/01/2010. 5,000 shares exercisable on 12/01/2011. 5,000 shares exercisable on 12/01/2012. 5,000 shares exercisable on 12/01/2013. Expiration Date: 12/1/2018. Held Direct.