0001214659-24-003951.txt : 20240304 0001214659-24-003951.hdr.sgml : 20240304 20240304110933 ACCESSION NUMBER: 0001214659-24-003951 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240301 FILED AS OF DATE: 20240304 DATE AS OF CHANGE: 20240304 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Hsing Michael CENTRAL INDEX KEY: 0001308676 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 24713403 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-65025.xml PRIMARY DOCUMENT X0508 4 2024-03-01 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001308676 Hsing Michael 5808 LAKE WASHINGTON BLVD NE KIRKLAND WA 98033 true true false false CEO 1 Common Stock 2024-03-01 4 S false 100 716.82 D 915093 D Common Stock 2024-03-01 4 S false 100 717.31 D 914993 D Common Stock 2024-03-01 4 S false 200 718.52 D 914793 D Common Stock 2024-03-01 4 S false 825 719.47 D 913968 D Common Stock 2024-03-01 4 S false 312 720.27 D 913656 D Common Stock 2024-03-01 4 S false 441 721.60 D 913215 D Common Stock 2024-03-01 4 S false 200 724.41 D 913015 D Common Stock 2024-03-01 4 S false 300 725.53 D 912715 D Common Stock 2024-03-01 4 S false 791 726.72 D 911924 D Common Stock 2024-03-01 4 S false 1275 727.39 D 910649 D Common Stock 2024-03-01 4 S false 2064 728.54 D 908585 D Common Stock 2024-03-01 4 S false 972 729.21 D 907613 D Common Stock 2024-03-01 4 S false 120 731.82 D 907493 D Common Stock 2024-03-01 4 S false 100 732.01 D 907393 D Common Stock 2024-03-01 4 S false 200 733.37 D 907232 D Common Stock 133040 I by M Hsing 04 Trust Common Stock 12825 I ZH Family 2020 Trust The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $718.44 to $718.60. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $719.20 to $719.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $720.01 to $720.46. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $721.17 to $721.81. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $724.40 to $724.42. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $725.51 to $725.57. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $726.32 to $726.95. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $727.07 to $727.97. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $728.00 to $728.93. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $729.04 to $729.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $731.08 to $731.97. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Ending balance includes 39 shares acquired on February 15, 2024 through the Company's qualified ESPP program. /s/ Saria Tseng, attorney-in-fact for Mr. Michael R. Hsing 2024-03-04