Maurice Sciammas - Nov 24, 2025 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Signature
/s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas
Stock symbol
MPWR
Transactions as of
Nov 24, 2025
Transactions value $
-$3,559,434
Form type
4
Date filed
11/25/2025, 04:31 PM
Previous filing
Nov 20, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sciammas Maurice EVP, WW Sales & Marketing 1555 PALM BEACH LAKES BLVD., WEST PALM BEACH /s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas 2025-11-24 0001360833

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MPWR Common Stock Sale -$3.56M -3.98K -2.68% $895.23 144K Nov 24, 2025 Direct
holding MPWR Common Stock 1.7K Nov 24, 2025 The Joseph Roger Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 2K Nov 24, 2025 Rosalind Sciammas Family 2021 Trust
holding MPWR Common Stock 1.3K Nov 24, 2025 Rosalind Sciammas Brokerage Account
holding MPWR Common Stock 49.5K Nov 24, 2025 Sciammas Family Trust
holding MPWR Common Stock 26.7K Nov 24, 2025 Various Sciammas GRATs
holding MPWR Common Stock 1.7K Nov 24, 2025 The Patrick Francis Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 4.02K Nov 24, 2025 By Sciammas Trust 2020
holding MPWR Common Stock 5K Nov 24, 2025 Clement Sciammas Family 2021 Trust
holding MPWR Common Stock 1K Nov 24, 2025 Peter Rafferty and Eric Toothill 2021Trust
holding MPWR Common Stock 1.7K Nov 24, 2025 The Chloe Liliane Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 1.5K Nov 24, 2025 Clement Sciammas Trust
* An asterisk sign (*) next to the price indicates that the price is likely invalid.