Filing Details

Accession Number:
0001280452-12-000220
Form Type:
4
Zero Holdings:
No
Publication Time:
2012-08-15 19:30:36
Reporting Period:
2012-08-14
Filing Date:
2012-08-15
Accepted Time:
2012-08-15 19:30:36
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
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings Equity Swap Involved Form Type Code Nature of Ownership Explanation
Common Stock Acquisiton 2012-08-14 2,000 $12.86 93,035 No 4 M Direct
Common Stock Disposition 2012-08-14 2,000 $12.20 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
Sec. Name Sec. Type Acquisiton - Disposition Date Amount Price Amount - 2 Price - 2
Common Stock Non-Qualified Stock Option (right to buy) Disposition 2012-08-14 2,000 $0.00 2,000 $12.86
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
3,000 2010-02-18 2016-02-18 No 4 M Direct