Filing Details

Accession Number:
0001280452-21-000031
Form Type:
4
Zero Holdings:
No
Publication Time:
2021-02-12 18:53:27
Reporting Period:
2021-02-11
Accepted Time:
2021-02-12 18:53:27
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
1360833 Maurice Sciammas 5808 Lake Washington Blvd Ne
Kirkland WA 98033
Sr. V.p.of Sales And Marketing 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 Disposition 2021-02-11 150 $376.40 348,976 No 4 S Direct
Common Stock Disposition 2021-02-11 940 $377.56 348,036 No 4 S Direct
Common Stock Disposition 2021-02-11 1,200 $379.21 346,836 No 4 S Direct
Common Stock Disposition 2021-02-11 1,210 $380.63 345,626 No 4 S Direct
Common Stock Disposition 2021-02-11 1,400 $382.11 344,226 No 4 S Direct
Common Stock Disposition 2021-02-11 100 $383.81 344,126 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 S Direct
No 4 S Direct
No 4 S Direct
No 4 S Direct
No 4 S Direct
No 4 S Direct
Reported Non-Derivative Holdings
Sec. Name Remaning Holdings Nature of Ownership Explanation
Common Stock 9,000 Indirect By GRAT
Common Stock 1,375 Indirect By Sciammas Trst2020
Common Stock 2,000 Indirect by Family Trust
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 $376.11 to $376.54. 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. 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 $377.15 to $378.07. 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.
  3. 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 $378.76 to $379.76. 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.
  4. 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 $380.06 to $381.02. 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.
  5. 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 $381.63 to $382.34. 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.
  6. Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust.