The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Chang Kuo Wei Herbert since 2020.
This trader's CIK number is 1192171.
At the time of last reporting, Chang Kuo Wei Herbert was the Officer of Monolithic Power Systems Inc. (stock ticker symbol MPWR).
Also see all insider trading activities at Monolithic Power Systems Inc.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | MPWR | 0 | $0 | 450 | $348,794 | 0 | $0 |
| 2024 | MPWR | 0 | $0 | 1,100 | $839,773 | 0 | $0 |
| 2023 | MPWR | 0 | $0 | 1,000 | $510,456 | 0 | $0 |
| 2021 | MPWR | 0 | $0 | 300 | $111,000 | 0 | $0 |
| 2020 | MPWR | 0 | $0 | 11,702 | $3,002,244 | 0 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-11-25 | MPWR | Sale | 100 | 896.97 | 89,697 |
| 2025-11-21 | MPWR | Sale | 100 | 873.97 | 87,397 |
| 2025-05-13 | MPWR | Sale | 50 | 738.00 | 36,900 |
| 2025-05-12 | MPWR | Sale | 100 | 698.00 | 69,800 |
| 2025-05-08 | MPWR | Sale | 100 | 650.00 | 65,000 |
| 2024-08-15 | MPWR | Sale | 200 | 893.44 | 178,688 |
| 2024-05-20 | MPWR | Sale | 200 | 750.00 | 150,000 |
| 2024-05-15 | MPWR | Sale | 200 | 735.00 | 147,000 |
| 2024-02-29 | MPWR | Sale | 250 | 706.34 | 176,585 |
| 2024-02-22 | MPWR | Sale | 250 | 750.00 | 187,500 |
| 2023-11-14 | MPWR | Sale | 400 | 523.64 | 209,456 |
| 2023-11-13 | MPWR | Sale | 100 | 510.00 | 51,000 |
| 2023-08-29 | MPWR | Sale | 500 | 500.00 | 250,000 |
| 2021-02-26 | MPWR | Sale | 300 | 370.00 | 111,000 |
| 2020-11-04 | MPWR | Sale | 3,000 | 326.33 | 978,999 |
| 2020-08-28 | MPWR | Sale | 1,300 | 268.00 | 348,400 |
| 2020-08-12 | MPWR | Sale | 400 | 279.50 | 111,800 |
| 2020-08-06 | MPWR | Sale | 600 | 280.00 | 168,000 |
| 2020-08-07 | MPWR | Sale | 100 | 283.00 | 28,300 |
| 2020-08-05 | MPWR | Sale | 600 | 276.00 | 165,600 |
| 2020-08-04 | MPWR | Sale | 200 | 274.50 | 54,900 |
| 2020-08-03 | MPWR | Sale | 476 | 271.26 | 129,120 |
| 2020-05-08 | MPWR | Sale | 1,026 | 208.00 | 213,408 |
| 2020-05-11 | MPWR | Sale | 2,000 | 212.00 | 424,000 |
| 2020-02-13 | MPWR | Sale | 1,000 | 192.00 | 192,000 |
| 2020-02-11 | MPWR | Sale | 1,000 | 187.72 | 187,717 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Chang Kuo Wei Herbert (Officer of Monolithic Power Systems Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.