Filing Details

Accession Number:
0001214659-24-000606
Form Type:
4
Zero Holdings:
No
Publication Time:
2024-01-11 11:37:13
Reporting Period:
2024-01-10
Accepted Time:
2024-01-11 11:37:13
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
1308647 Deming Xiao 5808 Lake Washington Blvd Ne
Kirkland WA 98033
Pres. Of Mps Asia Operations No 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 Disposition 2024-01-10 500 $584.39 221,436 No 4 S Direct
Common Stock Disposition 2024-01-10 700 $586.21 220,736 No 4 S Direct
Common Stock Disposition 2024-01-10 1,079 $587.84 219,657 No 4 S Direct
Common Stock Disposition 2024-01-10 1,757 $588.44 217,900 No 4 S Direct
Common Stock Disposition 2024-01-10 2,387 $589.52 215,513 No 4 S Direct
Common Stock Disposition 2024-01-10 3,718 $590.37 211,795 No 4 S Direct
Common Stock Disposition 2024-01-10 930 $591.34 210,865 No 4 S Direct
Common Stock Disposition 2024-01-10 200 $592.38 210,665 No 4 S Direct
Common Stock Disposition 2024-01-10 10 $593.00 210,655 No 4 S Direct
Common Stock Disposition 2024-01-10 204 $594.13 210,451 No 4 S Direct
Common Stock Disposition 2024-01-10 30 $596.19 210,421 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
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 455 Indirect by Spouse
Common Stock 3,391 Indirect Christopher Chao Xiao 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 $586.07 to $586.55. 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 $587.43 to $587.98. 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 $588.09 to $588.94. 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 $589.00 to $589.94. 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 $590.00 to $590.93. 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. 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 $591.00 to $591.77. 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.
  7. 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 $592.30 to $592.46. 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.