Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,356.94 | 130 | 176,402 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,351.43 | 10,967 | 14,821,133 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,347.15 | 6,343 | 8,544,972 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,343.76 | 5,783 | 7,770,964 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,338.66 | 2,949 | 3,947,708 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,333.34 | 1,111 | 1,481,341 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,328.54 | 2,121 | 2,817,833 | Form 4 |
| MPWR | Hsing Michael | CEO | 09/28/2026 | Verkauf | 1,323.31 | 596 | 788,693 | Form 4 |
| MPWR | Tseng Saria | EVP & General Counsel | 08/31/2026 | Schenkung | — | 2,000 | — | Form 4 |
| MPWR | Dean Robert W Ii | Interim CFO | 08/24/2026 | J | — | 5 | — | Form 4 |
| MPWR | Dean Robert W Ii | Interim CFO | 08/24/2026 | Verkauf | 1,297.72 | 32 | 41,527 | Form 4 |
| MPWR | Chang Kuo Wei Herbert | Director | 08/24/2026 | Verkauf | 1,281.57 | 50 | 64,079 | Form 4 |
| MPWR | Dean Robert W Ii | Interim CFO | 08/17/2026 | Verkauf | 1,413.64 | 6 | 8,482 | Form 4 |
| MPWR | Chang Kuo Wei Herbert | Director | 08/11/2026 | Verkauf | 1,420.00 | 50 | 71,000 | Form 4 |
| MPWR | Dean Robert W Ii | Interim CFO | 08/05/2026 | Verkauf | 1,344.27 | 105 | 141,148 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 08/04/2026 | Schenkung | — | 25,000 | — | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 08/03/2026 | Verkauf | 1,343.94 | 30 | 40,318 | Form 4 |
| MPWR | Dean Robert W Ii | Interim CFO | 07/25/2026 | Zuteilung | — | 1,359 | — | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,405.71 | 110 | 154,628 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,400.45 | 117 | 163,853 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,396.16 | 213 | 297,382 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,384.11 | 410 | 567,485 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,378.73 | 418 | 576,309 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,375.47 | 472 | 649,222 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,369.18 | 240 | 328,603 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,388.19 | 50 | 69,410 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,352.95 | 5,640 | 7,630,638 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,348.91 | 1,506 | 2,031,458 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,344.16 | 1,864 | 2,505,514 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,339.59 | 1,460 | 1,955,801 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,334.59 | 776 | 1,035,642 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,329.30 | 464 | 616,795 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,323.93 | 409 | 541,487 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,318.42 | 274 | 361,247 | Form 4 |
| MPWR | Sciammas Maurice | EVP, WW Sales & Marketing | 07/15/2026 | Verkauf | 1,314.03 | 527 | 692,494 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).