Filing Details

Accession Number:
0001280452-10-000131
Form Type:
4
Zero Holdings:
No
Publication Time:
2010-05-03 13:00:00
Reporting Period:
2010-04-30
Filing Date:
2010-05-03
Accepted Time:
2010-05-03 13:27:26
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
1312593 Saria Tseng 6409 Guadalupe Mines Road
San Jose CA 95120
Vp & General Counsel No 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 2010-04-30 10,000 $16.00 45,000 No 4 M Direct
Common Stock Disposition 2010-04-30 10,000 $25.25 35,000 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
Sec. Name Sec. Type Acquisiton - Disposition Date Amount Price Amount - 2 Price - 2
Common Stock Non-Qualified Stock Option (right to buy) Disposition 2010-04-30 10,000 $0.00 10,000 $16.00
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
18,800 2009-07-27 2014-07-27 No 4 M Direct
Footnotes
  1. In accordance with the reporting person's 10b5-1 trading plan.
  2. 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 $25.25 to $25.33. 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