0001280452-13-000161.txt : 20130506 0001280452-13-000161.hdr.sgml : 20130506 20130506205039 ACCESSION NUMBER: 0001280452-13-000161 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20130503 FILED AS OF DATE: 20130506 DATE AS OF CHANGE: 20130506 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: 13817741 MAIL ADDRESS: STREET 1: 79 GREAT OAKS BLVD CITY: SAN JOSE STATE: CA ZIP: 95119 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: 79 GREAT OAKS BLVD CITY: SAN JOSE STATE: CA ZIP: 95119 BUSINESS PHONE: (408) 826-0600 MAIL ADDRESS: STREET 1: 79 GREAT OAKS BLVD CITY: SAN JOSE STATE: CA ZIP: 95119 4 1 edgardoc.xml PRIMARY DOCUMENT X0306 4 2013-05-03 0 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001308676 Hsing Michael 79 GREAT OAKS BLVD SAN JOSE CA 95119 1 1 0 0 CEO Common Stock 2013-05-03 4 S 0 820.0 24.18 D 591985 D Common Stock 2013-05-03 4 A 0 74.0 0.0 A 592059 D Common Stock 2013-05-03 4 S 0 40.0 24.18 D 592019 D Common Stock 465566 I By Jointly w/Spouse Common Stock 133040 I By S. Hsing 04 Trust Common Stock 33000 I Hsing Fam Foundation Common Stock 133040 I by M Hsing 04 Trust Shares sold to pay tax obligations resulting from the vesting of restricted stock units. Equitable stock dividend adjustment approved by the Board of Director as a result of dividend Payment to shareholders on December 28, 2012. Stock dividends will release according to the same vesting schedule as the original grants. By: Saria Tseng For: Michael Hsing 2013-05-06