Maurice Sciammas - 01 Oct 2021 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
Issuer symbol: MPWR
Transactions as of: 01 Oct 2021
Transactions value $: -$2,061,773
Form type: 4
Filing time: 05 Oct 2021, 17:01:11 UTC
Previous filing: 16 Aug 2021
Next filing: 10 Nov 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MPWR	Common Stock	Sale	-$2,061,772	-4,330	-1.54%	$476.16	275,977	01 Oct 2021	Direct	F1, F2
holding	MPWR	Common Stock						2,000	01 Oct 2021	Peter Rafferty and Eric Toothill 2021Trust
holding	MPWR	Common Stock						2,000	01 Oct 2021	Rosalind Sciammas Family 2021 Trust
holding	MPWR	Common Stock						5,000	01 Oct 2021	Clement Sciammas Family 2021 Trust
holding	MPWR	Common Stock						23,015	01 Oct 2021	By Sciammas Trust 2020
holding	MPWR	Common Stock						5,446	01 Oct 2021	by Family Trust
holding	MPWR	Common Stock						15,449	01 Oct 2021	By GRAT

* 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.
F2	The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $476.15 to $476.16. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

Content

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

The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $476.15 to $476.16. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.