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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
2022-05-12 BLEGEN THEODORE CFO Sale −1,395 $388.10 $541K 129,993
2022-05-12 Tseng Saria VP & General Counsel Sale −1,679 $388.10 $652K 268,499
2022-05-12 Hsing Michael CEO Sale −6,481 $388.10 $2.5M 1,038,423
2022-05-12 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −1,679 $388.10 $652K 225,867
2022-05-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift −40,700 227,546
2022-05-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +18,200 26,700
2022-05-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +11,250 22,560
2022-05-09 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +11,250 22,560
2022-05-06 Xiao Deming Pres. of MPS Asia Operations Sale −986 $453.16 $447K 294,061
2022-05-04 BLEGEN THEODORE CFO Sale −850 $453.16 $385K 131,388
2022-05-04 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −986 $453.16 $447K 268,246
2022-05-04 Tseng Saria VP & General Counsel Sale −986 $453.16 $447K 270,178
2022-05-04 Hsing Michael CEO Sale −3,807 $453.15 $1.7M 1,044,904
2022-04-01 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift −6,949 8,500
2022-04-01 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +1,852 7,298
2022-04-01 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +1,699 1,699
2022-04-01 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +1,699 1,699
2022-04-01 Sciammas Maurice Sr. V.P.of Sales and Marketing Gift +1,699 1,699
2022-04-01 BLEGEN THEODORE CFO Sale −930 $467.22 $435K 132,238
2022-04-01 Tseng Saria VP & General Counsel Sale −4,420 $467.23 $2.1M 271,164

Page 54 of 59 · 1,177 trades