0001214659-24-008657.txt : 20240509 0001214659-24-008657.hdr.sgml : 20240509 20240509124739 ACCESSION NUMBER: 0001214659-24-008657 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240508 FILED AS OF DATE: 20240509 DATE AS OF CHANGE: 20240509 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Xiao Deming CENTRAL INDEX KEY: 0001308647 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 24929556 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] ORGANIZATION NAME: 04 Manufacturing 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-65792.xml PRIMARY DOCUMENT X0508 4 2024-05-08 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001308647 Xiao Deming 5808 LAKE WASHINGTON BLVD NE KIRKLAND WA 98033 false true false false EVP, Global Operations 0 Common Stock 2024-05-08 4 S false 869 690.02 D 207747 D Common Stock 3391 I Christopher Chao Xiao Trust Common Stock 455 I by Spouse 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 includes 36 shares acquired on February 15, 2024 through the Company's qualified ESPP program. /s/ Saria Tseng, attorney-in-fact for Mr. Deming Xiao 2024-05-09