0001950047-24-006734.txt : 20240903 0001950047-24-006734.hdr.sgml : 20240903 20240903162355 ACCESSION NUMBER: 0001950047-24-006734 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240903 DATE AS OF CHANGE: 20240903 SUBJECT COMPANY: 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 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 241274410 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 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: BLEGEN THEODORE CENTRAL INDEX KEY: 0001415033 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 5808 LAKE WASHINGTON BLVD NE CITY: KIRKLAND STATE: WA ZIP: 98033 FORMER COMPANY: FORMER CONFORMED NAME: Blegen Theodore DATE OF NAME CHANGE: 20071012 144 1 primary_doc.xml 144 0001415033 XXXXXXXX LIVE 0001280452 MONOLITHIC POWER SYSTEMS, INC. 000-51026 5808 Lake Washington Blvd. NE Kirkland WA 98033 (425) 296-9956 BERNIE BLEGEN Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

2500 2260506.00 48752000 09/03/2024 NASDAQ Common 05/11/2022 Performance Shares Issuer N 270 05/11/2022 Not Applicable Common 06/30/2022 Performance Shares Issuer N 850 06/30/2022 Not Applicable Common 09/30/2022 Performance Shares Issuer N 895 09/30/2022 Not Applicable Common 11/03/2022 Performance Shares Issuer N 485 11/03/2022 Not Applicable N BERNIE BLEGEN

5808 Lake Washington Blvd. NE Kirkland WA 98033

Common 08/08/2024 728 565892.03 BERNIE BLEGEN

5808 Lake Washington Blvd. NE Kirkland WA 98033

Common 08/01/2024 2500 2131261.25 BERNIE BLEGEN

5808 Lake Washington Blvd. NE Kirkland WA 98033

Common 07/22/2024 2580 2145473.52 BERNIE BLEGEN

5808 Lake Washington Blvd. NE Kirkland WA 98033

Common 07/01/2024 2500 2010492.25 09/03/2024 08/18/2023 /s/ Theodore Bernhard Blegen