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Filing Details

Accession Number:: 0001280452-20-000023
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2020-02-06 18:24:51
Reporting Period:: 2020-02-04

Accepted Time:: 2020-02-06 18:24:51
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1280452	Monolithic Power Systems Inc	MPWR	Semiconductors & Related Devices (3674)	770466789

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1308676	Michael Hsing	5808 Lake Washington Blvd Ne Kirkland WA 98033	Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2020-02-04	43,200	$0.00	1,012,673	No	4	M	Direct
Common Stock	Acquisiton	2020-02-04	289,250	$30.00	1,301,923	No	4	A	Direct
Common Stock	Disposition	2020-02-06	70,886	$183.75	1,231,037	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	A	Direct
No	4	S	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Restricted Stock Units	Disposition	2020-02-04	43,200	$0.00	43,200	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	133,040	Indirect	by M Hsing 04 Trust

Footnotes

On October 25, 2018, the reporting person was granted a target number of 21,600 performance units and can earn up to maximum of 108,000 performance units subject to satisfaction of five stock price targets ranging from $140 to $172 over the performance periods from October 25, 2018 to December 31, 2023, as determined by the Board's Compensation Committee.All performance units are subject to time based vesting and require service through January 1, 2024 or an earlier change in control.Once vested, performance units convert into shares of common stock on a 1-for-1 basis and one-third of the resulting shares have no sales restrictions and are sellable on January 1, 2024, one-third of the shares have sales restrictions until January 1, 2025 and one-third have sales restrictions until January 1, 2026.On February 4, 2020, the fourth and fifth price targets had been met and approved by the Compensation Committee, which resulted in 43,200 units being credited,subject to time based vesting.
On February 7, 2018, the reporting person was granted a target of 97,500 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 4, 2020, 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 191,750 additional shares being earned by the reporting person. Of the restricted stock units that were awarded, 144,625 will vest immediately and 144,625 will vest quarterly in the next two years.
The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plans.