Home > Insider Trading > Filing (0001280452-15-000010)

Filing Details

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	79 Great Oaks Blvd San Jose CA 95119	Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2015-02-03	266,125	$0.00	634,849	No	4	A	Direct
Common Stock	Acquisiton	2015-02-03	26,581	$0.00	661,430	No	4	A	Direct
Common Stock	Disposition	2015-02-05	21,976	$47.80	639,454	No	4	S	Direct
Common Stock	Disposition	2015-02-05	45,585	$47.80	593,869	No	4	S	Direct
Common Stock	Disposition	2015-02-05	2,699	$48.02	26,301	No	4	S	Indirect	Hsing Fam Foundation

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	A	Direct
No	4	A	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Indirect	Hsing Fam Foundation

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	465,566	Indirect	By Jointly w/Spouse
Common Stock	133,040	Indirect	By S. Hsing 04 Trust
Common Stock	133,040	Indirect	by M Hsing 04 Trust

Footnotes

On February 11, 2013, the reporting person was granted a target of 94,226 shares of restricted stock units subject to satisfaction of pre-determined, performance-based vesting criteria. On February 3, 2015, the Company's Board of Directors determined that those performance criteria for the restricted stock units had been satisfied, which resulted in 171,899 additional shares being achieved and granted to the reporting person. Of the restricted stock units that were awarded, 133,062 will vest immediately and 133,063 will vest quarterly in the next two years.
1/12 of the Restricted Stock Units shall vest quarterly following the Vesting Commencement Date, provided that the Grantee continues to be a Service Provider from the Grant Date through each applicable vesting date.
Shares sold to pay tax obligations resulting from the vesting of restricted stock units.