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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
2023-02-08 Xiao Deming Pres. of MPS Asia Operations Sale −6,922 $462.41 $3.2M 278,772
2023-02-07 Wynne Eileen Director Grant or award +470 470
2023-02-07 Moyer James C Director Grant or award +470 2,593
2023-02-07 Zhou Jeff Director Grant or award +470 6,121
2023-02-07 Martinez Carintia Director Grant or award +470 1,595
2023-02-07 Lee Victor K Director Grant or award +470 29,884
2023-02-07 CHANG KUO WEI HERBERT Director Grant or award +470 2,293
2023-02-07 Elmiger Eugen J Director Grant or award +470 20,530
2023-02-07 Xiao Deming Pres. of MPS Asia Operations Grant or award +34,740 285,694
2023-02-07 Tseng Saria VP & General Counsel Grant or award +34,740 282,921
2023-02-07 Sciammas Maurice Sr. V.P.of Sales and Marketing Grant or award +34,740 226,873
2023-02-07 Hsing Michael CEO Grant or award +112,839 1,089,932
2023-02-07 BLEGEN THEODORE CFO Grant or award +22,857 144,052
2023-02-06 Xiao Deming Pres. of MPS Asia Operations Sale −723 $446.88 $323K 250,954
2023-02-06 Tseng Saria VP & General Counsel Sale −723 $446.88 $323K 248,181
2023-02-06 Sciammas Maurice Sr. V.P.of Sales and Marketing Sale −723 $446.87 $323K 192,133
2023-02-06 Hsing Michael CEO Sale −3,691 $446.88 $1.6M 977,093
2023-02-06 BLEGEN THEODORE CFO Sale −608 $446.87 $272K 121,195
2023-01-24 Xiao Deming Pres. of MPS Asia Operations Sale −10,243 $430.00 $4.4M 251,677
2023-01-12 Xiao Deming Pres. of MPS Asia Operations Sale −2,980 $400.00 $1.2M 261,920

Page 49 of 59 · 1,177 trades