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Home > Insider Trading > Filing (0001280452-12-000245)

Filing Details

Accession Number:: 0001280452-12-000245
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2012-08-29 14:40:19
Reporting Period:: 2012-08-27

Filing Date:: 2012-08-29
Accepted Time:: 2012-08-29 14:40:19
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
1192171	Herbert Wei Kuo Chang	79 Great Oaks Blvd San Jose CA 95119		Yes	No	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	Explanation
Common Stock	Acquisiton	2012-08-27	9,500	$20.20	100,535	No	4	M	Direct
Common Stock	Disposition	2012-08-27	9,500	$22.81	91,035	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	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	Non-Qualified Stock Option (right to buy)	Disposition	2012-08-27	9,500	$0.00	9,500	$20.20

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
4,000	2011-02-02	2017-02-09	No	4	M	Direct

Footnotes

The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $22.60 to $23.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.