Maurice Sciammas - 06 Feb 2026 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Signature
/s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas
Issuer symbol
MPWR
Transactions as of
06 Feb 2026
Net transactions value
-$26,790,370
Form type
4
Filing time
10 Feb 2026, 18:57:53 UTC
Previous filing
05 Feb 2026
Next filing
12 Feb 2026

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 10 Feb 2026 0001360833

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MPWR Common Stock Sale $26,790,370 -22,875 -11% $1171.16 178,625 06 Feb 2026 Direct F1
holding MPWR Common Stock 1,699 06 Feb 2026 The Joseph Roger Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 2,000 06 Feb 2026 Rosalind Sciammas Family 2021 Trust
holding MPWR Common Stock 1,299 06 Feb 2026 Rosalind Sciammas Brokerage Account
holding MPWR Common Stock 49,460 06 Feb 2026 Sciammas Family Trust
holding MPWR Common Stock 26,660 06 Feb 2026 Various Sciammas GRATs
holding MPWR Common Stock 1,699 06 Feb 2026 The Patrick Francis Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 4,015 06 Feb 2026 By Sciammas Trust 2020
holding MPWR Common Stock 1,000 06 Feb 2026 Peter Rafferty and Eric Toothill 2021Trust
holding MPWR Common Stock 1,699 06 Feb 2026 The Chloe Liliane Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 1,499 06 Feb 2026 Clement Sciammas Trust
holding MPWR Common Stock 5,000 06 Feb 2026 Clement Sciammas Family 2021 Trust
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reported sales were to cover taxes upon the release of restricted stock units, as required by the Company's equity incentive plan.