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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
2021-07-01 BLEGEN THEODORE CFO Sale −905 $370.45 $335K 147,751
2021-07-01 Hsing Michael CEO Sale −10,960 $370.45 $4.1M 1,000,690
2021-07-01 Xiao Deming Pres. of MPS Asia Operations Sale −4,305 $370.45 $1.6M 316,759
2021-07-01 Tseng Saria VP & General Counsel Sale −4,305 $370.45 $1.6M 262,565
2021-06-28 Zhou Jeff Director Sale −1,000 $367.65 $368K 10,509
2021-06-28 Zhou Jeff Director Sale −250 $370.00 $93K 10,259
2021-06-28 Zhou Jeff Director Sale −250 $375.00 $94K 10,009
2021-06-21 BLEGEN THEODORE CFO Sale −1,897 $353.17 $670K 148,656
2021-06-11 Moyer James C Director Sale −2,568 $342.11 $879K 255,876
2021-06-11 Moyer James C Director Sale −4,465 $343.18 $1.5M 251,411
2021-06-11 Moyer James C Director Sale −4,092 $343.98 $1.4M 247,319
2021-06-11 Moyer James C Director Sale −1,478 $344.77 $510K 245,841
2021-05-28 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift −9,000 288,316
2021-05-28 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +5,000 5,000
2021-05-28 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +2,000 2,000
2021-05-28 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +2,000 2,000
2021-05-28 Xiao Deming Pres. of MPS Asia Operations Sale −2,485 $343.76 $854K 321,064
2021-05-27 Martinez Carintia Director Grant or award +583 583
2021-05-20 BLEGEN THEODORE CFO Sale −1,897 $330.00 $626K 151,109
2021-05-14 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift −9,015 297,316

Page 63 of 72 · 1,433 trades