Filing Details

Accession Number:
0001280452-13-000174
Form Type:
4
Zero Holdings:
No
Publication Time:
2013-05-08 20:22:40
Reporting Period:
2013-05-06
Filing Date:
2013-05-08
Accepted Time:
2013-05-08 20:22:40
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 79 Great Oaks Blvd
San Jose CA 95119
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 2013-05-06 1,340 $7.64 83,972 No 4 M Direct
Common Stock Disposition 2013-05-06 1,340 $24.41 82,632 No 4 S Direct
Common Stock Acquisiton 2013-05-06 331 $7.64 82,963 No 4 M Direct
Common Stock Disposition 2013-05-06 331 $24.34 82,632 No 4 S Direct
Common Stock Acquisiton 2013-05-06 8,660 $7.64 91,292 No 4 M Direct
Common Stock Disposition 2013-05-06 8,660 $24.34 82,632 No 4 S Direct
Common Stock Disposition 2013-05-07 502 $24.24 82,130 No 4 S Direct
Common Stock Disposition 2013-05-08 1,223 $24.10 80,907 No 4 S Direct
Common Stock Acquisiton 2013-05-08 151 $0.00 81,058 No 4 A Direct
Common Stock Disposition 2013-05-08 58 $24.10 81,000 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 M Direct
No 4 S Direct
No 4 M Direct
No 4 S Direct
No 4 M Direct
No 4 S Direct
No 4 S Direct
No 4 S Direct
No 4 A 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 2013-05-06 331 $0.00 331 $7.64
Common Stock Non-Qualified Stock Option (right to buy) Disposition 2013-05-06 1,340 $0.00 1,340 $8.00
Common Stock Non-Qualified Stock Option (right to buy) Disposition 2013-05-06 8,660 $0.00 8,660 $8.00
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
563 2012-12-28 2014-11-17 No 4 M Direct
8,660 2005-10-15 2014-11-17 No 4 M Direct
0 2005-10-15 2014-11-17 No 4 M Direct
Reported Non-Derivative Holdings
Sec. Name Remaning Holdings Nature of Ownership Explanation
Common Stock 3,000 Indirect S.Tseng Charity Fund
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 $24.34 to $24.3501. 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.
  2. Shares sold to pay tax obligations resulting from the vesting of restricted stock units.
  3. Equitable stock dividend adjustment approved by the Board of Director as a result of dividend Payment to shareholders on December 28, 2012. Stock dividends will release according to the same vesting schedule as the original grants.
  4. On December 11, 2012, the Company's Board declared a special cash dividend of $1.00 per common share, which was paid on December 28, 2012 to all shareholders of record as of the close of business on December 21, 2012. The Board approved a modification whereby each outstanding option as of December 28, 2012 was increased by a ratio of 1.0471 with a corresponding reduction in the exercise price.