0001214659-24-003948.txt : 20240304 0001214659-24-003948.hdr.sgml : 20240304 20240304110752 ACCESSION NUMBER: 0001214659-24-003948 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: BLEGEN THEODORE CENTRAL INDEX KEY: 0001415033 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-51026 FILM NUMBER: 24713395 MAIL ADDRESS: STREET 1: 5808 LAKE WASHINGTON BLVD NE CITY: KIRKLAND STATE: WA ZIP: 98033 FORMER NAME: FORMER CONFORMED NAME: Blegen Theodore DATE OF NAME CHANGE: 20071012 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-65023.xml PRIMARY DOCUMENT X0508 4 2024-03-01 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001415033 BLEGEN THEODORE 5808 LAKE WASHINGTON BLVD NE KIRKLAND WA 98033 false true false false CFO 1 Common Stock 2024-03-01 4 S false 200 718.35 D 82973 D Common Stock 2024-03-01 4 S false 200 719.48 D 82773 D Common Stock 2024-03-01 4 S false 80 720.75 D 82693 D Common Stock 2024-03-01 4 S false 180 721.27 D 82513 D Common Stock 2024-03-01 4 S false 80 724.42 D 82433 D Common Stock 2024-03-01 4 S false 100 725.51 D 82333 D Common Stock 2024-03-01 4 S false 253 726.61 D 82080 D Common Stock 2024-03-01 4 S false 497 727.40 D 81583 D Common Stock 2024-03-01 4 S false 651 728.48 D 80932 D Common Stock 2024-03-01 4 S false 149 729.19 D 80783 D Common Stock 2024-03-01 4 S false 60 732.01 D 80723 D Common Stock 2024-03-01 4 S false 50 733.37 D 80723 D Common Stock 5331 I Irrevocable Trust FBO Theodore F. Blegen Common Stock 5331 I Irrevocable Trust FBO Sarah N. Blegen 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 $718.26 to $718.44. 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 $719.35 to $719.60. 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 $721.09 to $721.54. 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 $727.00 to $727.57. 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 $728.00 to $728.95. 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 $729.04 to $729.49. 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 50 shares acquired on February 15, 2024 through the Company's qualified ESPP program. /s/ Saria Tseng, attorney-in-fact for Mr. Bernie Blegen 2024-03-04