Filing Details

Accession Number:
0001280452-10-000123
Form Type:
4
Zero Holdings:
No
Publication Time:
2010-04-15 13:00:00
Reporting Period:
2010-04-14
Filing Date:
2010-04-15
Accepted Time:
2010-04-15 14:02:12
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 2010-04-14 3,000 $15.64 46,321 No 4 M Direct
Common Stock Disposition 2010-04-14 11,321 $24.22 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 2010-04-14 3,000 $0.00 3,000 $15.64
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
7,000 2010-01-31 2015-01-31 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 $24.20 to $24.25. 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.