0001195890-12-000006.txt : 20120619 0001195890-12-000006.hdr.sgml : 20120619 20120619200353 ACCESSION NUMBER: 0001195890-12-000006 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20120608 FILED AS OF DATE: 20120619 DATE AS OF CHANGE: 20120619 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CHOY BENEDICT C K CENTRAL INDEX KEY: 0001195890 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-12718 FILM NUMBER: 12916259 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: SUPERTEX INC CENTRAL INDEX KEY: 0000730000 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 942328535 STATE OF INCORPORATION: CA FISCAL YEAR END: 1221 BUSINESS ADDRESS: STREET 1: 1235 BORDEAUX DR CITY: SUNNYVALE STATE: CA ZIP: 94089 BUSINESS PHONE: 4087440100 MAIL ADDRESS: STREET 1: 1235 BORDEAUX DR CITY: SUNNYVALE STATE: CA ZIP: 94089 4 1 primary_doc.xml PRIMARY DOCUMENT X0305 4 2012-06-08 0 0000730000 SUPERTEX INC supx 0001195890 CHOY BENEDICT C K 1 1 0 0 Sr. VP, Tech Development common stock 2012-06-08 4 S 0 1000 18.8 D 147610 D common stock 2012-06-11 4 S 0 100 18.571 D 147510 D common stock 2012-06-13 4 S 0 5 18.04 D 147505 D common stock 2012-06-14 4 S 0 3895 18.0106 A 143610 D Benedict C.K. Choy 2012-06-19