Maurice Sciammas - 09 May 2025 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Role
EVP, WW Sales & Marketing
Signature
/s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas
Issuer symbol
MPWR
Transactions as of
09 May 2025
Transactions value $
$0
Form type
4
Filing time
09 May 2025, 19:55:15 UTC
Previous filing
20 Feb 2025
Next filing
12 May 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sciammas Maurice EVP, WW Sales & Marketing 5808 LAKE WASHINGTON BLVD NE, KIRKLAND /s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas 09 May 2025 0001360833

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MPWR Common Stock Gift $0 -1,878 -9.83% $0 17,226 09 May 2025 Various Sciammas GRATs F1
transaction MPWR Common Stock Gift $0 +1,878 +4.91% $0 40,094 09 May 2025 Sciammas Family Trust F2
holding MPWR Common Stock 10,899 09 May 2025 Maurice Sciammas Trust FBO Oski Crew
holding MPWR Common Stock 1,699 09 May 2025 The Chloe Liliane Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 2,000 09 May 2025 Rosalind Sciammas Family 2021 Trust
holding MPWR Common Stock 5,000 09 May 2025 Clement Sciammas Family 2021 Trust
holding MPWR Common Stock 16,015 09 May 2025 By Sciammas Trust 2020
holding MPWR Common Stock 102,325 09 May 2025 Direct
holding MPWR Common Stock 1,699 09 May 2025 The Patrick Francis Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 2,000 09 May 2025 Peter Rafferty and Eric Toothill 2021Trust
holding MPWR Common Stock 1,699 09 May 2025 The Joseph Roger Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 10,899 09 May 2025 Christina Sciammas Trust FBO Oski Crew
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 1,878 shares were transferred out of the Siblings 2021 GRATs, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer.
F2 1,878 shares were received by the Sciammas Family Trust, on which the reporting person is a Trustee, from Siblings 2021 GRATS, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer.