0001195890-12-000001.txt : 20120214 0001195890-12-000001.hdr.sgml : 20120214 20120214192426 ACCESSION NUMBER: 0001195890-12-000001 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20120213 FILED AS OF DATE: 20120214 DATE AS OF CHANGE: 20120214 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: 12613753 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 X0304 4 2012-02-13 0 0000730000 SUPERTEX INC supx 0001195890 CHOY BENEDICT C K 1 1 0 0 Senior VP, Tech Development common stock 2012-02-13 4 S 0 1016 18.96 D 167439 D common stock 2012-02-13 4 S 0 100 19.02 D 167339 D common stock 2012-02-13 4 S 0 100 19.1 D 167239 D common stock 2012-02-13 4 S 0 300 19.09 D 166939 D common stock 2012-02-13 4 S 0 100 19.02 D 166839 D common stock 2012-02-13 4 S 0 100 19.09 D 166739 D common stock 2012-02-13 4 S 0 29 19.03 D 166710 D common stock 2012-02-13 4 S 0 200 18.99 D 166510 D Benedict C.K. Choy 2012-02-14