MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2018

Feb 8, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2018-02-07

Reporting Person: Sciammas Maurice (Sr. V.P.of Sales and Marketing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-07	Common Stock	A	98760	$20.0	Acquired	455098	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2000	Indirect

Footnotes

F1: On February 2, 2016, the reporting person was granted a target of 40,193 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 7, 2018, the Company's Board of Directors determined that those performance criteria for the restricted stock units had been satisfied, which resulted in 58,567 additional shares being achieved and earned by the reporting person. Of the restricted stock units that were awarded, 49,380 will vest immediately and 49,380 will vest quarterly in the next two years.