MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2019

Aug 10, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2019-08-08

Reporting Person: Xiao Deming (Pres. of MPS Asia Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-08-08	Common Stock	S	2437	$150.4248	Disposed	346491	Direct
2019-08-08	Common Stock	S	3106	$151.515	Disposed	343385	Direct
2019-08-09	Common Stock	S	2209	$148.9445	Disposed	341176	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1101	Indirect

Footnotes

F1: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plans.

F2: Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program.

F3: 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 $151.50 to $151.68. 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.

F4: 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 $148.917 to $149.24. 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.