MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2019

Feb 28, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2019-02-15

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-02-15	Common Stock	J	123	$117.708	Acquired	367835	Direct
2019-02-25	Common Stock	S	13817	$138.7432	Disposed	354018	Direct
2019-02-25	Common Stock	S	162	$138.6332	Disposed	353856	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1101	Indirect

Footnotes

F1: Acquired through the Company's qualified ESPP program.

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 $138.35 to $139.06. 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.