Maurice Sciammas - 03 Feb 2022 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)

Role: Sr. V.P.of Sales and Marketing
Signature: /s/ Saria Tseng, attorney-in-fact for Mr. Maurice Sciammas
Issuer symbol: MPWR
Transactions as of: 03 Feb 2022
Transactions value $: $0
Form type: 4
Filing time: 04 Feb 2022, 16:06:02 UTC
Previous filing: 05 Jan 2022
Next filing: 09 Feb 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MPWR	Common Stock	Award	$0	+39,699	+16.18%	$0	285,104	03 Feb 2022	Direct	F1
holding	MPWR	Common Stock						15,449	03 Feb 2022	By GRAT
holding	MPWR	Common Stock						5,446	03 Feb 2022	by Family Trust
holding	MPWR	Common Stock						23,015	03 Feb 2022	By Sciammas Trust 2020
holding	MPWR	Common Stock						5,000	03 Feb 2022	Clement Sciammas Family 2021 Trust
holding	MPWR	Common Stock						2,000	03 Feb 2022	Rosalind Sciammas Family 2021 Trust
holding	MPWR	Common Stock						2,000	03 Feb 2022	Peter Rafferty and Eric Toothill 2021Trust
holding	MPWR	Common Stock						11,310	03 Feb 2022	Maurice Sciammas Trust FBO Oski Crew
holding	MPWR	Common Stock						11,310	03 Feb 2022	Christina Sciammas Trust FBO Oski Crew

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On February 4, 2020, the reporting person was granted a target of 13,233 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 3, 2022, 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 26,466 additional shares being earned by the reporting person. Of the restricted stock units that were awarded, 19,851 will vest immediately and 19,848 will vest quarterly in the next two years.

Content

On February 4, 2020, the reporting person was granted a target of 13,233 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 3, 2022, 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 26,466 additional shares being earned by the reporting person. Of the restricted stock units that were awarded, 19,851 will vest immediately and 19,848 will vest quarterly in the next two years.