Home > Insider Trading > Filing (0001280452-14-000014)

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
Common Stock	Disposition	2014-02-04	730	$32.19	307,706	No	4	S	Direct
Common Stock	Acquisiton	2014-02-04	138,162	$0.00	445,868	No	4	A	Direct
Common Stock	Acquisiton	2014-02-04	40,849	$0.00	486,717	No	4	A	Direct
Common Stock	Disposition	2014-02-05	32,131	$31.17	454,586	No	4	S	Direct
Common Stock	Disposition	2014-02-06	2,060	$31.27	452,526	No	4	S	Direct

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

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	29,000	Indirect	Hsing Fam Foundation
Common Stock	133,040	Indirect	by M Hsing 04 Trust

Footnotes

Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
On February 14, 2012, the reporting person was granted a target of 76,450 shares of restricted stock units subject to satisfaction of pre-determined, performance-based vesting criteria. On February 4, 2014, the Company's Board of Directors determined that those performance criteria for the restricted stock units had been satisfied, which resulted in 55,502 additional shares being achieved and granted to the reporting person. In addition, 6,210 shares were granted as a result of an equitable stock dividend adjustment approved by the Board of Directors on December 28, 2012. Of the restricted stock units that were awarded, 69,081 will vest immediately and 69,081 will vest quarterly in the next two years.
1/8 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. Additionally, 122,546 shares of Restricted Stock Units were granted and shall be subject to satisfaction of performance-based vesting criteria based on achievement of certain long term Company performance targets, as determined by the Compensation Committee of the Company, and additional time vesting subsequent to the achievement of those performance targets, provided that the Grantee continues to be a Service Provider from the grant date through each applicable vesting date.