0001214659-21-006972.txt : 20210628 0001214659-21-006972.hdr.sgml : 20210628 20210628191310 ACCESSION NUMBER: 0001214659-21-006972 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210628 FILED AS OF DATE: 20210628 DATE AS OF CHANGE: 20210628 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Zhou Jeff CENTRAL INDEX KEY: 0001480772 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 211055125 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: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 5808 LAKE WASHINGTON BLVD. NE CITY: KIRKLAND STATE: WA ZIP: 98033 BUSINESS PHONE: 425-296-9956 MAIL ADDRESS: STREET 1: 5808 LAKE WASHINGTON BLVD. NE CITY: KIRKLAND STATE: WA ZIP: 98033 4 1 marketforms-53248.xml PRIMARY DOCUMENT X0306 4 2021-06-28 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001480772 Zhou Jeff 5808 LAKE WASHINGTON BLVD NE KIRKLAND WA 98033 true false false false Common Stock 2021-06-28 4 S false 1000 367.65 D 10509 D Common Stock 2021-06-28 4 S false 250 370.00 D 10259 D Common Stock 2021-06-28 4 S false 250 375.00 D 10009 D Shares sold pursuant to the reporting person's 10b5-1 plan. /s/ Saria Tseng, attorney-in-fact for Mr. Jeff Zhou 2021-06-28