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Filing Details

Accession Number:
0001280452-12-000083
Form Type:
4
Zero Holdings:
No
Publication Time:
2012-02-29 13:28:15
Reporting Period:
2012-02-28
Filing Date:
2012-02-29
Filing Date Changed:
2012-02-29
Accepted Time:
2012-02-29 13:28:15
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 2012-02-28 10,000 $8.00 111,401 No 4 M Direct
Common Stock Acquisiton 2012-02-28 6,747 $8.00 118,148 No 4 M Direct
Common Stock Disposition 2012-02-28 16,747 $19.19 101,401 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 M Direct
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 Incentive Stock Option (right to buy) Disposition 2012-02-28 6,747 $0.00 6,747 $8.00
Common Stock Non-Qualified Stock Option (right to buy) Disposition 2012-02-28 10,000 $0.00 10,000 $8.00
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
0 2005-10-15 2014-11-17 No 4 M Direct
39,001 2005-10-15 2014-11-17 No 4 M Direct
Footnotes
  1. 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 $19.08 to $19.35. 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.