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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
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,382 $369.73 $511K 18,637
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −2,326 $370.53 $862K 16,311
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,605 $371.70 $597K 14,706
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,220 $372.98 $455K 13,486
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −995 $373.86 $372K 12,491
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −2,181 $375.07 $818K 10,310
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −496 $376.07 $187K 9,814
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −700 $377.10 $264K 9,114
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,736 $378.31 $657K 7,378
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −2,942 $379.32 $1.1M 4,436
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,835 $380.31 $698K 2,601
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −891 $381.26 $340K 1,710
2021-02-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −335 $382.46 $128K 1,375
2021-02-09 Moyer James C Director Sale −304 $367.50 $112K 248,537
2021-02-09 Moyer James C Director Sale −686 $368.32 $253K 247,851
2021-02-09 Moyer James C Director Sale −1,429 $369.78 $528K 246,422
2021-02-09 Moyer James C Director Sale −1,179 $370.76 $437K 245,243
2021-02-09 Moyer James C Director Sale −1,095 $371.78 $407K 244,148
2021-02-09 Moyer James C Director Sale −1,607 $373.01 $599K 242,541
2021-02-09 Moyer James C Director Sale −1,273 $373.92 $476K 241,268

Page 70 of 72 · 1,433 trades