0001214659-21-010251.txt : 20211005
0001214659-21-010251.hdr.sgml : 20211005
20211005170214
ACCESSION NUMBER: 0001214659-21-010251
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20211001
FILED AS OF DATE: 20211005
DATE AS OF CHANGE: 20211005
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Tseng Saria
CENTRAL INDEX KEY: 0001312593
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 000-51026
FILM NUMBER: 211307547
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-53611.xml
PRIMARY DOCUMENT
X0306
4
2021-10-01
0001280452
MONOLITHIC POWER SYSTEMS INC
MPWR
0001312593
Tseng Saria
5808 LAKE WASHINGTON BLVD NE
KIRKLAND
WA
98033
false
true
false
false
VP & General Counsel
Common Stock
2021-10-01
4
S
false
4330
476.16
D
254554
D
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 24 shares acquired on August 16, 2021 through the Company's qualified ESPP program.
/s/ Saria Tseng
2021-10-04