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: Sciammas Maurice (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-06	Common Stock	S	723	$446.87	Disposed	192133	Direct
2023-02-07	Common Stock	A	34740	$0.00	Acquired	226873	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	13502	Indirect
Common Stock	19458	Indirect
Common Stock	19458	Indirect
Common Stock	2000	Indirect
Common Stock	23015	Indirect
Common Stock	26700	Indirect
Common Stock	1699	Indirect
Common Stock	1699	Indirect
Common Stock	5000	Indirect
Common Stock	2000	Indirect
Common Stock	1699	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 11,580 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 23,160 additional shares being earned by the reporting person. Of the 34,740 restricted stock units that were awarded, 17,370 will vest immediately and 17,370 will vest quarterly in the next two years.