MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2019

Feb 13, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2019-02-11

Reporting Person: Hsing Michael (Director, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-02-11	Common Stock	A	254220	$30.0	Acquired	1314098	Direct
2019-02-12	Common Stock	S	72851	$130.6571	Disposed	1241247	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	133040	Indirect

Footnotes

F1: On February 7, 2017, the reporting person was granted a target of 97,777 shares of restricted stock units, with the right to earn up to 300% of the target shares, subject to satisfaction of pre-determined, performance-based vesting criteria. On February 11, 2019, the Company's Compensation Committee of the Board of Directors determined and approved the achievement of the performance criteria for the restricted stock units, which resulted in 156,443 additional shares being earned by the reporting person. Of the restricted stock units that were awarded, 127,111 will vest immediately and 127,109 will vest quarterly in the next two years.

F2: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plans.