| Insiders | Shares | % | Avg Price | Total $ | |
|---|---|---|---|---|---|
| Buys | 0 | ||||
| Sells | 10 | -542,172 | 100% | $1018.38 | -$552,136,193 |
| Net | -10 | -542,172 | -100% | -$552,136,193 |
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Report Date |
|---|---|---|---|---|---|
| Mr. Michael R. Hsing | CEO, Director | $1,220,392,816 | -$271,899,379 | -18% | 12 Feb 2026 |
| Mr. Deming Xiao | EVP, Global Operations | $299,991,142 | -$57,989,590 | -16% | 06 Feb 2026 |
| Mr. Maurice Sciammas | EVP, WW Sales & Marketing | $262,404,955 | -$69,972,607 | -21% | 11 Feb 2026 |
| Saria Tseng | EVP & General Counsel | $235,920,918 | -$95,225,194 | -29% | 06 Feb 2026 |
| Theodore Blegen | EVP and CFO | $106,631,372 | -$49,384,778 | -32% | 06 Feb 2026 |
| Mr. Victor K. Lee | Director | $33,644,712 | -$1,995,099 | -5.6% | 09 Feb 2026 |
| Mr. Eugen J. Elmiger | Director | $15,772,478 | -$3,386,841 | -18% | 03 Feb 2026 |
| Mr. James C. Moyer | Director | $15,372,900 | 29 Aug 2024 | ||
| Mr. Robert W. Dean II | Interim CFO | $9,723,430 | 27 Feb 2026 | ||
| Mr. Jeff Zhou | Director | $5,256,888 | -$673,910 | -11% | 03 Feb 2026 |
| Ms. Eileen Wynne | Director | $1,216,335 | 03 Feb 2026 | ||
| Ms. Carintia Martinez | Director | $967,086 | -$1,260,000 | -57% | 03 Feb 2026 |
| Mr. Herbert Chang | Director | $557,411 | -$348,794 | -38% | 03 Feb 2026 |
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Mr. Michael R. Hsing | MPWR | Common Stock | Sale | -3.58% | $38,670,257 | $1171.83 | -33,000 | 888,234 | 12 Feb 2026 | Direct |
| Mr. Michael R. Hsing | MPWR | Common Stock | Sale | -3.46% | $39,234,212 | $1188.92 | -33,000 | 921,234 | 11 Feb 2026 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Sale | -13.3% | $235,995 | $1179.98 | -200 | 1,299 | 11 Feb 2026 | Clement Sciammas Trust |
| Mr. Michael R. Hsing | MPWR | Common Stock | Sale | -3.44% | $38,837,435 | $1142.28 | -34,000 | 954,234 | 10 Feb 2026 | Direct |
| Mr. Victor K. Lee | MPWR | Common Stock | Sale | -1.42% | $484,864 | $1212.16 | -400 | 27,756 | 09 Feb 2026 | Direct |
| Mr. Deming Xiao | MPWR | Common Stock | Sale | -8.84% | $26,790,370 | $1171.16 | -22,875 | 235,932 | 06 Feb 2026 | Direct |
| Saria Tseng | MPWR | Common Stock | Sale | -10.2% | $26,790,370 | $1171.16 | -22,875 | 200,626 | 06 Feb 2026 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Sale | -11.4% | $26,790,370 | $1171.16 | -22,875 | 178,625 | 06 Feb 2026 | Direct |
| Theodore Blegen | MPWR | Common Stock | Sale | -20.9% | $25,443,531 | $1171.16 | -21,725 | 82,353 | 06 Feb 2026 | Direct |
| Mr. Michael R. Hsing | MPWR | Common Stock | Sale | -5.27% | $64,323,824 | $1171.16 | -54,923 | 988,234 | 06 Feb 2026 | Direct |
| Ms. Eileen Wynne | MPWR | Common Stock | Award | 16.4% | 189 | 1,342 | 03 Feb 2026 | Direct | ||
| Mr. Jeff Zhou | MPWR | Common Stock | Award | 3.37% | 189 | 5,800 | 03 Feb 2026 | Direct | ||
| Mr. Eugen J. Elmiger | MPWR | Common Stock | Award | 1.1% | 189 | 17,402 | 03 Feb 2026 | Direct | ||
| Mr. Victor K. Lee | MPWR | Common Stock | Award | 0.68% | 189 | 28,156 | 03 Feb 2026 | Direct | ||
| Ms. Carintia Martinez | MPWR | Common Stock | Award | 21.5% | 189 | 1,067 | 03 Feb 2026 | Direct | ||
| Mr. Deming Xiao | MPWR | Common Stock | Award | 28.4% | 57,170 | 258,807 | 03 Feb 2026 | Direct | ||
| Theodore Blegen | MPWR | Common Stock | Award | 59.3% | 38,745 | 104,078 | 03 Feb 2026 | Direct | ||
| Saria Tseng | MPWR | Common Stock | Award | 34.4% | 57,170 | 223,501 | 03 Feb 2026 | Direct | ||
| Mr. Michael R. Hsing | MPWR | Common Stock | Award | 15.1% | 136,825 | 1,043,157 | 03 Feb 2026 | Direct | ||
| Mr. Maurice Sciammas | MPWR | Common Stock | Award | 39.6% | 57,170 | 201,500 | 03 Feb 2026 | Direct | ||
| Mr. Herbert Chang | MPWR | Common Stock | Award | 44.4% | 189 | 615 | 03 Feb 2026 | Direct | ||
| Theodore Blegen | MPWR | Common Stock | Sale | -4.39% | $3,389,266 | $1129.76 | -3,000 | 65,333 | 02 Feb 2026 | Direct |
| Mr. Victor K. Lee | MPWR | Common Stock | Sale | -2.1% | $558,516 | $930.86 | -600 | 27,967 | 02 Jan 2026 | Direct |
| Theodore Blegen | MPWR | Common Stock | Sale | -4.21% | $2,821,399 | $940.47 | -3,000 | 68,332 | 02 Jan 2026 | Direct |
| Saria Tseng | MPWR | Common Stock | Gift | 1,000 | 1,000 | 24 Dec 2025 | C&T Discovery Foundation | |||
| Saria Tseng | MPWR | Common Stock | Gift | -0.6% | -1,000 | 166,331 | 24 Dec 2025 | Direct | ||
| Mr. Victor K. Lee | MPWR | Common Stock | Sale | -3.38% | $951,719 | $951.72 | -1,000 | 28,567 | 24 Dec 2025 | Direct |
| Mr. Michael R. Hsing | MPWR | Common Stock | Gift | -1.34% | -12,337 | 906,332 | 09 Dec 2025 | Direct | ||
| Theodore Blegen | MPWR | Common Stock | Sale | -4.04% | $2,724,623 | $908.21 | -3,000 | 71,332 | 01 Dec 2025 | Direct |
| Saria Tseng | MPWR | Common Stock | Sale | -10.7% | $18,529,316 | $926.47 | -20,000 | 167,331 | 26 Nov 2025 | Direct |
| Saria Tseng | MPWR | Common Stock | Sale | -9.65% | $18,083,638 | $904.18 | -20,000 | 187,331 | 25 Nov 2025 | Direct |
| Mr. Herbert Chang | MPWR | Common Stock | Sale | -19% | $89,697 | $896.97 | -100 | 426 | 25 Nov 2025 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Sale | -2.68% | $3,559,434 | $895.23 | -3,976 | 144,330 | 24 Nov 2025 | Direct |
| Mr. Herbert Chang | MPWR | Common Stock | Sale | -16% | $87,397 | $873.97 | -100 | 526 | 21 Nov 2025 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Sale | -15.9% | $24,656,387 | $881.66 | -27,966 | 148,306 | 19 Nov 2025 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Sale | -3.84% | $6,121,059 | $870.21 | -7,034 | 176,272 | 19 Nov 2025 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Gift | 10.1% | 4,530 | 49,460 | 13 Nov 2025 | Sciammas Family Trust | ||
| Mr. Maurice Sciammas | MPWR | Common Stock | Gift | -14.5% | -4,530 | 26,660 | 13 Nov 2025 | Various Sciammas GRATs | ||
| Mr. Michael R. Hsing | MPWR | Common Stock | Sale | -3.87% | $35,724,380 | $965.52 | -37,000 | 918,669 | 12 Nov 2025 | Direct |
| Mr. Michael R. Hsing | MPWR | Common Stock | Sale | -4.02% | $38,335,721 | $958.39 | -40,000 | 955,669 | 11 Nov 2025 | Direct |
| Mr. Maurice Sciammas | MPWR | Common Stock | Sale | -13.3% | $197,362 | $986.81 | -200 | 1,299 | 05 Nov 2025 | Rosalind Sciammas Brokerage Account |
| Theodore Blegen | MPWR | Common Stock | Sale | -3.88% | $3,073,278 | $1024.43 | -3,000 | 74,332 | 03 Nov 2025 | Direct |
| Mr. Michael R. Hsing | MPWR | Common Stock | Tax liability | -10.9% | -121,918 | 995,669 | 30 Oct 2025 | Direct | ||
| Theodore Blegen | MPWR | Common Stock | Tax liability | -38.4% | -48,298 | 77,332 | 30 Oct 2025 | Direct | ||
| Saria Tseng | MPWR | Common Stock | Tax liability | -20.8% | -54,543 | 207,331 | 30 Oct 2025 | Direct | ||
| Mr. Maurice Sciammas | MPWR | Common Stock | Tax liability | -22.9% | -54,543 | 183,306 | 30 Oct 2025 | Direct | ||
| Mr. Deming Xiao | MPWR | Common Stock | Tax liability | -21.3% | -54,543 | 201,637 | 30 Oct 2025 | Direct | ||
| Saria Tseng | MPWR | Common Stock | Award | 107.2% | 135,520 | 261,874 | 25 Oct 2025 | Direct | ||
| Theodore Blegen | MPWR | Common Stock | Award | 231.1% | 87,690 | 125,630 | 25 Oct 2025 | Direct | ||
| Mr. Michael R. Hsing | MPWR | Common Stock | Award | 37.2% | 302,920 | 1,117,587 | 25 Oct 2025 | Direct |