Stock Trading History of Tsang Michael

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Tsang Michael since year 2005. The trader's CIK number is 1351520. At the time of this reporting, Tsang Michael is the VP, Standard Products of Supertex Inc (stock ticker symbol SUPX).

Stock purchases, sales, and option exercises reported by *Tsang Michael* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-06-04	SUPX	Supertex Inc	Option Exercise	2,000	16.50	33,010
2007-06-04	SUPX	Supertex Inc	Sale	2,000	33.92	67,841
2006-12-07	SUPX	Supertex Inc	Option Exercise	1,000	15.67	15,670
2006-12-07	SUPX	Supertex Inc	Sale	1,000	43.76	43,765
2006-11-20	SUPX	Supertex Inc	Option Exercise	1,000	15.67	15,670
2006-11-20	SUPX	Supertex Inc	Sale	1,000	47.99	47,990
2006-11-15	SUPX	Supertex Inc	Option Exercise	2,000	17.34	34,680
2006-11-15	SUPX	Supertex Inc	Sale	2,000	45.50	91,010
2006-10-31	SUPX	Supertex Inc	Option Exercise	2,500	15.43	38,578
2006-10-31	SUPX	Supertex Inc	Sale	2,772	44.35	122,938

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Tsang Michael (VP, Standard Products of Supertex Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.