Maurice Sciammas - 28 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
28 May 2025
Net transactions value
$0
Form type
4
Filing time
30 May 2025, 16:32:48 UTC
Previous filing
12 May 2025
Next filing
08 Aug 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 28 May 2025 0001360833

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MPWR Common Stock Gift $0 -1,499 -8.7% $0.000000 15,727 28 May 2025 Various Sciammas GRATs F1
transaction MPWR Common Stock Gift $0 +1,499 $0.000000 1,499 28 May 2025 Clement Sciammas (Sibling) Brokerage Account F2
holding MPWR Common Stock 10,899 28 May 2025 Maurice Sciammas Trust FBO Oski Crew
holding MPWR Common Stock 1,699 28 May 2025 The Chloe Liliane Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 2,000 28 May 2025 Rosalind Sciammas Family 2021 Trust
holding MPWR Common Stock 40,094 28 May 2025 Sciammas Family Trust
holding MPWR Common Stock 102,325 28 May 2025 Direct
holding MPWR Common Stock 1,699 28 May 2025 The Patrick Francis Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 4,015 28 May 2025 By Sciammas Trust 2020
holding MPWR Common Stock 5,000 28 May 2025 Clement Sciammas Family 2021 Trust
holding MPWR Common Stock 2,000 28 May 2025 Peter Rafferty and Eric Toothill 2021Trust
holding MPWR Common Stock 1,699 28 May 2025 The Joseph Roger Sciammas 2020 Irrevocable Trust
holding MPWR Common Stock 10,899 28 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 1,499 shares were distributed out of the Sciammas Siblings 2021 GRATs, on which the reporting person is a Trustee, to the Clement Sciammas brokerage account. No funds were exchanged, and no sale of shares occurred in the transfer.
F2 1,499 shares were received by the Clement Sciammas brokerage account from the Sciammas Siblings 2021 GRATS. No funds were exchanged, and no sale of shares occurred in the transfer.