0001280452-11-000185.txt : 20110803 0001280452-11-000185.hdr.sgml : 20110803 20110803185239 ACCESSION NUMBER: 0001280452-11-000185 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20110803 FILED AS OF DATE: 20110803 DATE AS OF CHANGE: 20110803 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Hsing Michael CENTRAL INDEX KEY: 0001308676 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 111008168 MAIL ADDRESS: STREET 1: 6409 GUADALUPE MINES ROAD CITY: SAN JOSE STATE: CA ZIP: 95120 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MONOLITHIC POWER SYSTEMS INC CENTRAL INDEX KEY: 0001280452 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 770466789 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 6409 GUADALUPE MINES ROAD CITY: SAN JOSE STATE: CA ZIP: 95120 BUSINESS PHONE: (408) 826-0600 MAIL ADDRESS: STREET 1: 6409 GUADALUPE MINES ROAD CITY: SAN JOSE STATE: CA ZIP: 95120 4 1 edgardoc.xml PRIMARY DOCUMENT X0304 4 2011-08-03 0 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001308676 Hsing Michael 6409 GUADALUPE MINES ROAD SAN JOSE CA 95120 1 1 0 0 CEO Common Stock 2011-08-03 4 S 0 736 14.17 D 675682 D Common Stock 498566 I By Jointly w/Spouse Common Stock 133040 I By S. Hsing 04 Trust Common Stock 133040 I by M Hsing 04 Trust Shares sold to pay tax obligations resulting from the vesting of restricted stock units. By: Saria Tseng For: Michael Hsing 2011-08-03