0001214659-21-008921.txt : 20210823
0001214659-21-008921.hdr.sgml : 20210823
20210823175453
ACCESSION NUMBER: 0001214659-21-008921
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20210816
FILED AS OF DATE: 20210823
DATE AS OF CHANGE: 20210823
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Xiao Deming
CENTRAL INDEX KEY: 0001308647
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 000-51026
FILM NUMBER: 211197968
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-53610.xml
PRIMARY DOCUMENT
X0306
4
2021-08-16
0001280452
MONOLITHIC POWER SYSTEMS INC
MPWR
0001308647
Xiao Deming
5808 LAKE WASHINGTON BLVD NE
KIRKLAND
WA
98033
false
true
false
false
Pres. of MPS Asia Operations
Common Stock
2021-08-16
4
J
false
29
323.24
A
303727
D
Common Stock
2021-08-19
4
S
false
4739
462.00
D
298988
D
Common Stock
1101
I
by Spouse
Shares acquired through the Company's qualified ESPP program.
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 $462.00 to $462.04. 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.
/s/ Saria Tseng, attorney-in-fact for Mr. Deming Xiao
2021-08-23