MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2023

Feb 9, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2023-02-06

Reporting Person: Hsing Michael (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-06	Common Stock	S	3691	$446.88	Disposed	977093	Direct
2023-02-07	Common Stock	A	112839	$0.00	Acquired	1089932	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	133040	Indirect
Common Stock	12825	Indirect

Footnotes

F1: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan.

F2: On February 2, 2021, the reporting person was granted a target of 37,613 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, 2023, 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 75,226 additional shares being earned by the reporting person. Of the 112,839 restricted stock units that were awarded, 56,420 will vest immediately and 56,419 will vest quarterly in the next two years.