X0303 4 2010-08-12 0 0000730000 SUPERTEX INC supx 0001379961 Kagel Phil 1235 BORDEAUX DRIVE SUNNYVALE CA 94089 0 1 0 0 VP, Finance & CFO common stock 2010-08-12 4 P 0 1000 23.16 A 3000 I trust Phillip A. Kagel 2010-08-12