Filing Details

Accession Number:
0001280452-12-000153
Form Type:
4
Zero Holdings:
No
Publication Time:
2012-05-14 18:57:16
Reporting Period:
2012-05-10
Filing Date:
2012-05-14
Filing Date Changed:
2012-05-14
Accepted Time:
2012-05-14 18:57:16
Original Submission Date:
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 6409 Guadalupe Mines Road
San Jose CA 95120
Pres. Of Mps Asia Operations No Yes No No
Reported Non-Derivative Transactions
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings
Common Stock Disposition 2012-05-10 1,383 $20.87 130,869
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 S Direct
Reported Non-Derivative Holdings
Sec. Name Remaning Holdings Nature of Ownership Explanation
Common Stock 18,600 Indirect by Spouse
Footnotes
  1. Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
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