Home > Insider Trading > Filing (0001280452-14-000153)

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
1308647	Deming Xiao	79 Great Oaks Blvd San Jose CA 95119	Pres. Of Mps Asia Operations	No	Yes	No	No

Transaction Summary

Sold:	14,110 shares	Avg. Price: $41.71	Total Value: $588,505.81
Number of Shares After Transactions:	2,470 shares

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	Disposition	2014-08-04	1,935	$41.41	78,087	No	4	S	Direct
Common Stock	Disposition	2014-08-04	92	$41.41	77,995	No	4	S	Direct
Common Stock	Disposition	2014-08-04	263	$41.41	77,732	No	4	S	Direct
Common Stock	Disposition	2014-08-04	14	$41.41	77,718	No	4	S	Direct
Common Stock	Disposition	2014-08-05	818	$41.12	76,900	No	4	S	Direct
Common Stock	Disposition	2014-08-05	7,595	$42.01	69,305	No	4	S	Direct
Common Stock	Disposition	2014-08-01	261	$41.43	5,602	No	4	S	Indirect	by Spouse
Common Stock	Disposition	2014-08-01	2,774	$41.37	2,828	No	4	S	Indirect	by Spouse
Common Stock	Disposition	2014-08-04	103	$41.41	2,725	No	4	S	Indirect	by Spouse
Common Stock	Disposition	2014-08-04	6	$41.41	2,719	No	4	S	Indirect	by Spouse
Common Stock	Disposition	2014-08-04	237	$41.41	2,482	No	4	S	Indirect	by Spouse
Common Stock	Disposition	2014-08-04	12	$41.41	2,470	No	4	S	Indirect	by Spouse

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Indirect	by Spouse
No	4	S	Indirect	by Spouse
No	4	S	Indirect	by Spouse
No	4	S	Indirect	by Spouse
No	4	S	Indirect	by Spouse
No	4	S	Indirect	by Spouse

Footnotes

Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
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 $42.00 to $42.092. 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.