MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2020

Apr 2, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2020-02-18

Reporting Person: Hsing Michael (Director, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-02-18	Common Stock	J	172	$123.369	Acquired	1223252	Direct
2020-03-31	Common Stock	S	23258	$170.0	Disposed	1199994	Direct
2020-04-01	Common Stock	S	11150	$162.575	Disposed	1188844	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	133040	Indirect

Footnotes

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

F2: In accordance with the reporting person's 10b5-1 trading plan.

F3: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plans.