X0202 4 2006-03-01 0 0000730000 SUPERTEX INC SUPX 0001351519 Masood Ahmed 1235 BORDEAUX DR. SUNNYVALE CA 94089 0 1 0 0 V.P. Marketing ISO Option (to exercise common stock) 33.67 2006-03-01 4 A 0 4900 33.67 A 2010-03-01 2013-03-01 Common Stock 4900 0 D NQ Option (to exercise common stock) 33.67 2006-03-01 4 A 0 8100 33.67 A 2010-03-01 2013-03-01 Common Stock 8100 0 D ISO Option Currently Granted (to exercise common stock). Exercise Price: $33.67. Shares Granted: 4,900. Shares Exercisable: 0. 2,450 shares Exercisable 3/1/2010. 2,450 shares Exercisable 3/1/2011. Expiration Date: 3/1/2013. Held Direct. NQ Option Currently Granted (to exercise common stock). Exercise Price: $33.67. Shares Granted: 8,100. Shares Exercisable: 0. 3,550 shares Exercisable 3/1/2010. 4,550 shares Exercisable 3/1/2011. Expiration Date: 3/1/2013. Held Direct. ISO Option (to exercise common stock). Exercise price: $21.75. Shares granted: 18,388. Currently exercisable: 0. 4,597 shares Exercisable 12/1/2006. 4,597 shares Exercisable 12/1/2007. 4,597 shares Exercisable 12/1/2008. 4,597 shares Exercisable 12/1/2009. Expiration date: 12/1/2011. Held Direct. NQ Option (to exercise common stock). Exercise price: $21.75. Shares granted: 5,612. Currently exercisable: 0. 1,403 shares Exercisable 12/1/2006. 1,403 shares Exercisable 12/1/2007. 1,403 shares Exercisable 12/1/2008. 1,403 shares Exercisable 12/1/2009. Expiration date: 12/1/2011. Held Direct. ISO Option (to exercise common stock). Exercise price: $17.39. Shares granted: 1,000. Currently exercisable: 0. 1,000 shares Exercisable 6/1/2010. Expiration date: 6/1/2012. Held Direct. NQ Option (to exercise common stock). Exercise price: $17.39. Shares granted: 4,000. Currently exercisable: 0. 1,000 shares Exercisable 6/1/2006. 1,000 shares Exercisable 6/1/2007. 1,000 shares Exercisable 6/1/2008. 1,000 shares Exercisable 6/1/2009. Expiration date: 6/1/2012. Held Direct. Ahmed Masood 2006-04-05