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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.

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

Date Insider Transaction Shares Price Value Owned after
2024-08-22 Xiao Deming EVP, Global Operations Gift −8,968 163,105
2024-08-22 Xiao Deming EVP, Global Operations Gift +8,968 39,714
2024-08-22 Xiao Deming EVP, Global Operations Sale −10,000 $950.00 $9.5M 29,714
2024-08-19 Xiao Deming EVP, Global Operations Gift −30,291 172,073
2024-08-19 Xiao Deming EVP, Global Operations Gift +30,291 30,746
2024-08-16 Hsing Michael CEO Sale 10b5-1 −100 $823.27 $82K 864,009
2024-08-15 CHANG KUO WEI HERBERT Director Sale −100 $888.88 $89K 641
2024-08-15 CHANG KUO WEI HERBERT Director Sale −100 $898.00 $90K 541
2024-08-09 Hsing Michael CEO Sale 10b5-1 −200 $813.23 $163K 865,132
2024-08-09 Hsing Michael CEO Sale 10b5-1 −65 $814.72 $53K 865,067
2024-08-09 Hsing Michael CEO Sale 10b5-1 −458 $815.37 $373K 864,609
2024-08-09 Hsing Michael CEO Sale 10b5-1 −300 $816.18 $245K 864,309
2024-08-09 Hsing Michael CEO Sale 10b5-1 −100 $817.10 $82K 864,209
2024-08-09 Hsing Michael CEO Sale 10b5-1 −100 $821.32 $82K 864,109
2024-08-09 Hsing Michael CEO Sale 10b5-1 −500 $824.63 $412K 863,509
2024-08-09 Hsing Michael CEO Sale 10b5-1 −200 $826.00 $165K 863,309
2024-08-09 Hsing Michael CEO Sale 10b5-1 −100 $827.21 $83K 863,209
2024-08-09 Hsing Michael CEO Sale 10b5-1 −500 $828.15 $414K 862,709
2024-08-09 Hsing Michael CEO Sale 10b5-1 −107 $831.83 $89K 862,602
2024-08-09 Hsing Michael CEO Sale 10b5-1 −262 $832.28 $218K 862,340

Page 27 of 59 · 1,177 trades