Maurice Sciammas - May 4, 2023 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Role: Sr. V.P.of Sales and Marketing
Signature: /s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas
Stock symbol: MPWR
Transactions as of: May 4, 2023
Transactions value $: -$455,464
Form type: 4
Date filed: 5/5/2023, 04:39 PM
Previous filing: May 4, 2023
Next filing: May 10, 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MPWR	common	Sale	-$455K	-991	-0.48%	$459.60	205K	May 4, 2023	Direct	F1
holding	MPWR	Common Stock						14.9K	May 4, 2023	by Family Trust
holding	MPWR	Common Stock						2K	May 4, 2023	Rosalind Sciammas Family 2021 Trust
holding	MPWR	Common Stock						23K	May 4, 2023	By Sciammas Trust 2020
holding	MPWR	Common Stock						25.4K	May 4, 2023	By GRAT
holding	MPWR	Common Stock						1.7K	May 4, 2023	The Chloe Liliane Sciammas 2020 Irrevocable Trust
holding	MPWR	Common Stock						1.7K	May 4, 2023	The Joseph Roger Sciammas 2020 Irrevocable Trust
holding	MPWR	Common Stock						5K	May 4, 2023	Clement Sciammas Family 2021 Trust
holding	MPWR	Common Stock						2K	May 4, 2023	Peter Rafferty and Eric Toothill 2021Trust
holding	MPWR	Common Stock						19.5K	May 4, 2023	Christina Sciammas Trust FBO Oski Crew
holding	MPWR	Common Stock						19.5K	May 4, 2023	Maurice Sciammas Trust FBO Oski Crew
holding	MPWR	Common Stock						1.7K	May 4, 2023	The Patrick Francis Sciammas 2020 Irrevocable Trust

Showing 1 to 12 of 12 entries

* 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 vesting of restricted stock units, as required by the Company's equity incentive plan.