Filing Details

Accession Number:
0001280452-21-000028
Form Type:
4
Zero Holdings:
No
Publication Time:
2021-02-11 17:46:13
Reporting Period:
2021-02-09
Accepted Time:
2021-02-11 17:46:13
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
1308656 C James Moyer 5808 Lake Washington Blvd Ne
Kirkland WA 98033
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 Disposition 2021-02-09 304 $367.50 248,537 No 4 S Direct
Common Stock Disposition 2021-02-09 686 $368.32 247,851 No 4 S Direct
Common Stock Disposition 2021-02-09 1,429 $369.78 246,422 No 4 S Direct
Common Stock Disposition 2021-02-09 1,179 $370.76 245,243 No 4 S Direct
Common Stock Disposition 2021-02-09 1,095 $371.78 244,148 No 4 S Direct
Common Stock Disposition 2021-02-09 1,607 $373.01 242,541 No 4 S Direct
Common Stock Disposition 2021-02-09 1,273 $373.92 241,268 No 4 S Direct
Common Stock Disposition 2021-02-09 2,299 $374.93 238,969 No 4 S Direct
Common Stock Disposition 2021-02-09 1,015 $376.18 237,954 No 4 S Direct
Common Stock Disposition 2021-02-09 1,380 $377.19 236,574 No 4 S Direct
Common Stock Disposition 2021-02-09 1,083 $378.33 235,491 No 4 S Direct
Common Stock Disposition 2021-02-09 856 $379.17 234,635 No 4 S Direct
Common Stock Disposition 2021-02-09 694 $380.61 233,941 No 4 S Direct
Common Stock Disposition 2021-02-09 100 $381.79 233,841 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
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 71,823 Indirect by Moyer FamilyTrust
Footnotes
  1. In accordance with the reporting person's 10b5-1 trading plan.
  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 $367.07 to $367.79. 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 $368.09 to $368.97. 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 $369.29 to $370.29. 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 $370.32 to $371.32. 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 $371.37 to $372.24. 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 $372.43 to $373.41. 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.
  8. 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 $373.46 to $374.41. 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.
  9. 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 $374.53 to $375.51. 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.
  10. 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 $375.72 to $376.71. 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.
  11. 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 $376.74 to $377.73. 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.
  12. 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 $377.81 to $378.80. 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.
  13. 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 $378.84 to $379.69. 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.
  14. 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 $380.22 to $381.16. 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.
  15. 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 $381.52 to $381.98. 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.
  16. The securities are held by the Moyer Family Trust, of which James C. Moyer is the Trustee.