Deming Xiao - May 28, 2021 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Role: Pres. of MPS Asia Operations
Signature: /s/ Saria Tseng, attorney-in-fact for Mr. Deming Xiao
Stock symbol: MPWR
Transactions as of: May 28, 2021
Transactions value $: -$854,244
Form type: 4
Date filed: 5/28/2021, 08:19 PM
Previous filing: May 14, 2021
Next filing: Jul 6, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MPWR	Common Stock	Sale	-$854K	-2.49K	-0.77%	$343.76	321K	May 28, 2021	Direct	F1
holding	MPWR	Common Stock						1.1K	May 28, 2021	by Spouse

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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 $343.76-$343.77. 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 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 $343.76-$343.77. 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.