Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-02-12 Sale | 2026-02-17 5:08 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 33,000 | $1,172 | $38,670,257 | 1,034,099 (Indirect Direct) | View |
| 2026-02-11 Sale | 2026-02-13 5:11 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 33,000 | $1,189 | $39,234,212 | 1,067,099 (Indirect Direct) | View |
| 2026-02-11 Sale | 2026-02-12 7:37 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 200 | $1,180 | $235,995 | 274,455 (Indirect Direct) | View |
| 2026-02-10 Sale | 2026-02-12 2:45 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 34,000 | $1,142 | $38,837,435 | 1,100,099 (Indirect Direct) | View |
| 2026-02-09 Sale | 2026-02-11 6:44 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Lee Victor K Director | 400 | $1,212 | $484,864 | 27,756 (Direct) | View |
| 2026-02-06 Sale | 2026-02-10 6:59 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 22,875 | $1,171 | $26,790,370 | 260,723 (Indirect Direct) | View |
| 2026-02-06 Sale | 2026-02-10 6:58 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 22,875 | $1,171 | $26,790,370 | 201,626 (Indirect Direct) | View |
| 2026-02-06 Sale | 2026-02-10 6:57 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 22,875 | $1,171 | $26,790,370 | 274,655 (Indirect Direct) | View |
| 2026-02-06 Sale | 2026-02-10 6:57 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 21,725 | $1,171 | $25,443,531 | 93,015 (Indirect Direct) | View |
| 2026-02-06 Sale | 2026-02-10 6:56 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 54,923 | $1,171 | $64,323,824 | 1,134,099 (Indirect Direct) | View |
| 2026-02-02 Sale | 2026-02-04 10:10 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $1,130 | $3,389,266 | 75,995 (Indirect Direct) | View |
| 2026-01-02 Sale | 2026-01-06 6:25 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Lee Victor K Director | 600 | $930.86 | $558,516 | 27,967 (Direct) | View |
| 2026-01-02 Sale | 2026-01-06 4:33 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $940.47 | $2,821,399 | 78,994 (Indirect Direct) | View |
| 2025-12-24 Sale | 2025-12-29 10:31 am | MONOLITHIC POWER SYSTEMS INC | MPWR | Lee Victor K Director | 1,000 | $951.72 | $951,719 | 28,567 (Direct) | View |
| 2025-12-01 Sale | 2025-12-02 7:52 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $908.21 | $2,724,623 | 81,994 (Indirect Direct) | View |
| 2025-11-26 Sale | 2025-11-28 10:19 am | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 20,000 | $926.47 | $18,529,316 | 167,331 (Direct) | View |
| 2025-11-25 Sale | 2025-11-28 10:15 am | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 20,000 | $904.18 | $18,083,638 | 187,331 (Direct) | View |
| 2025-11-25 Sale | 2025-11-25 4:54 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director | 100 | $896.97 | $89,697 | 426 (Direct) | View |
| 2025-11-24 Sale | 2025-11-25 4:31 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 3,976 | $895.23 | $3,559,434 | 240,360 (Indirect Direct) | View |
| 2025-11-21 Sale | 2025-11-24 11:25 am | MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director | 100 | $873.97 | $87,397 | 526 (Direct) | View |
| 2025-11-19 Sale | 2025-11-20 4:48 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 27,966 | $881.66 | $24,656,387 | 244,336 (Indirect Direct) | View |
| 2025-11-19 Sale | 2025-11-20 4:47 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 7,034 | $870.21 | $6,121,059 | 272,302 (Indirect Direct) | View |
| 2025-11-12 Sale | 2025-11-13 4:15 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 37,000 | $965.52 | $35,724,380 | 1,064,534 (Indirect Direct) | View |
| 2025-11-11 Sale | 2025-11-13 4:14 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 40,000 | $958.39 | $38,335,721 | 1,101,534 (Indirect Direct) | View |
| 2025-11-05 Sale | 2025-11-06 6:53 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 200 | $986.81 | $197,362 | 279,336 (Indirect Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
Ownership | 2026-03-09 7:05 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | DEAN ROBERT W II Interim CFO | 0 | $0 | 8,125 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 8:04 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Wynne Eileen Director | 189 | $0 | 1,342 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 8:03 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director | 189 | $0 | 5,800 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 8:01 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director | 189 | $0 | 615 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 8:00 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Elmiger Eugen J Director | 189 | $0 | 17,402 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 7:56 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Lee Victor K Director | 189 | $0 | 28,156 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 7:39 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Martinez Carintia Director | 189 | $0 | 1,067 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 7:36 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 57,170 | $0 | 283,598 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 7:35 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 38,745 | $0 | 114,740 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 7:29 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 57,170 | $0 | 224,501 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 7:07 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 136,825 | $0 | 1,189,022 (Direct) | View |
| 2026-02-03 Option Award | 2026-02-05 6:56 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 57,170 | $0 | 297,530 (Direct) | View |
| 2025-12-24 Gift | 2025-12-30 6:08 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 1,000 | $0 | 167,331 (Direct) | View |
| 2025-12-09 Gift | 2025-12-11 4:03 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 12,337 | $0 | 1,052,197 (Direct) | View |
| 2025-11-13 Gift | 2025-11-14 6:31 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 4,530 | $0 | 252,676 (Indirect) | View |