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CIK 0001280452 · Large accelerated filer

MONOLITHIC POWER SYSTEMS, INC.

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Ticker
MPWR
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
770466789
Phone
561-839-3999
Business address
1555 PALM BEACH LAKES BLVD., WEST PALM BEACH, FL, 33401
Former names
MONOLITHIC POWER SYSTEMS INC
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$40,463,134
in 4 filings, $40.3M under 10b5-1 plans

Net −$40,463,134. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Hsing Michael −$40.3M CEO sold 4% of stake
  2. CHANG KUO WEI HERBERT −$64K Director sold 9% of stake
  3. DEAN ROBERT W II −$50K Interim CFO sold <1% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2021-02-17 Tseng Saria VP & General Counsel Sale −591 $372.78 $220K 292,952
2021-02-17 Tseng Saria VP & General Counsel Sale −1,809 $373.68 $676K 291,143
2021-02-17 Tseng Saria VP & General Counsel Sale −1,393 $374.71 $522K 289,750
2021-02-17 Tseng Saria VP & General Counsel Sale −810 $375.67 $304K 288,940
2021-02-17 Tseng Saria VP & General Counsel Sale −3,200 $376.77 $1.2M 285,740
2021-02-17 Tseng Saria VP & General Counsel Sale −4,684 $377.86 $1.8M 281,056
2021-02-17 Tseng Saria VP & General Counsel Sale −3,634 $378.71 $1.4M 277,422
2021-02-17 Tseng Saria VP & General Counsel Sale −3,095 $379.73 $1.2M 274,327
2021-02-17 Tseng Saria VP & General Counsel Sale −1,700 $380.73 $647K 272,627
2021-02-17 Tseng Saria VP & General Counsel Sale −410 $381.71 $157K 272,217
2021-02-17 Tseng Saria VP & General Counsel Sale −400 $382.90 $153K 271,817
2021-02-17 Tseng Saria VP & General Counsel Sale −300 $384.23 $115K 271,517
2021-02-16 Hsing Michael CEO Other acquisition +89 $239.17 $21K 1,091,992
2021-02-16 BLEGEN THEODORE CFO Other acquisition +89 $239.17 $21K 163,198
2021-02-16 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −3,220 $387.34 $1.2M 340,906
2021-02-16 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −3,200 $388.29 $1.2M 337,706
2021-02-16 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,480 $389.31 $576K 336,226
2021-02-16 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,300 $390.46 $508K 334,926
2021-02-16 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −400 $392.22 $157K 334,526
2021-02-16 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −600 $393.27 $236K 333,926

Page 68 of 72 · 1,433 trades