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: Tseng Saria (VP & General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-02-11	Common Stock	A	74331	$30	Acquired	372618	Direct
2019-02-12	Common Stock	S	21694	$130.6571	Disposed	350924	Direct

Footnotes

F1: On February 7, 2017, the reporting person was granted a target of 28,589 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 45,742 additional shares being earned by the reporting person. Of the restricted stock units that were awarded, 37,167 will vest immediately and 37,164 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.