0001214659-22-000324.txt : 20220105 0001214659-22-000324.hdr.sgml : 20220105 20220105161057 ACCESSION NUMBER: 0001214659-22-000324 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20220103 FILED AS OF DATE: 20220105 DATE AS OF CHANGE: 20220105 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Tseng Saria CENTRAL INDEX KEY: 0001312593 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 22511231 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: 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-54757.xml PRIMARY DOCUMENT X0306 4 2022-01-03 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001312593 Tseng Saria 5808 LAKE WASHINGTON BLVD NE KIRKLAND WA 98033 false true false false VP & General Counsel Common Stock 2022-01-03 4 S false 4305 490.87 D 246603 D The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Ending balance adjusted by 1 share to correct the reported number of shares held by the reporting person. /s/ Saria Tseng 2022-01-05