0001520649-12-000036.txt : 20120502 0001520649-12-000036.hdr.sgml : 20120502 20120502175029 ACCESSION NUMBER: 0001520649-12-000036 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20120430 FILED AS OF DATE: 20120502 DATE AS OF CHANGE: 20120502 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Downing Mark A CENTRAL INDEX KEY: 0001548575 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-29823 FILM NUMBER: 12806680 MAIL ADDRESS: STREET 1: 400 WEST CESAR CHAVEZ CITY: AUSTIN STATE: TX ZIP: 78701 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: SILICON LABORATORIES INC CENTRAL INDEX KEY: 0001038074 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 742793174 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 400 W CESAR CHAVEZ CITY: AUSTIN STATE: TX ZIP: 78701 BUSINESS PHONE: 5124168500 MAIL ADDRESS: STREET 1: 400 W CESAR CHAVEZ CITY: AUSTIN STATE: TX ZIP: 78701 4 1 primary_doc.xml PRIMARY DOCUMENT X0305 4 2012-04-30 0 0001038074 SILICON LABORATORIES INC SLAB 0001548575 Downing Mark A 400 WEST CESAR CHAVEZ AUSTIN TX 78701 0 1 0 0 Sr Vice President, Broad Based Common Stock, $0.0001 par value 2012-04-30 4 S 0 200 35.3437 D 24720 D Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan. Includes shares purchased by Reporting Person through the Issuer's 2009 Employee Stock Purchase Plan on the Plan's most recent semi-annual purchase date. Mark A. Downing 2012-05-02