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 |
| 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 |
| 2025-11-03 Sale | 2025-11-04 7:31 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $1,024 | $3,073,278 | 84,994 (Indirect Direct) | View |
| 2025-10-24 Sale | 2025-10-24 5:22 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 1,300 | $1,088 | $1,413,906 | 126,354 (Direct) | View |
| 2025-10-15 Sale | 2025-10-17 12:11 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 16,840 | $1,018 | $17,139,295 | 127,654 (Direct) | View |
| 2025-10-01 Sale | 2025-10-01 8:51 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $913.22 | $2,739,648 | 48,602 (Indirect Direct) | View |
| 2025-09-18 Sale | 2025-09-23 2:56 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Martinez Carintia Director | 1,400 | $900 | $1,260,000 | 878 (Direct) | View |
| 2025-09-18 Sale | 2025-09-23 2:35 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 14,510 | $914.45 | $13,268,670 | 144,494 (Direct) | View |
| 2025-09-02 Sale | 2025-09-03 6:39 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $814.34 | $2,443,032 | 51,601 (Indirect Direct) | View |
| 2025-08-29 Sale | 2025-09-02 4:04 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Elmiger Eugen J Director | 4,000 | $846.71 | $3,386,841 | 17,213 (Direct) | View |
| 2025-08-27 Sale | 2025-08-28 2:23 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director | 193 | $870 | $167,910 | 5,611 (Direct) | View |
| 2025-08-15 Sale | 2025-08-18 5:36 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 20,231 | $829.1 | $16,773,550 | 960,532 (Indirect Direct) | View |
| 2025-08-13 Sale | 2025-08-15 2:54 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director | 400 | $850 | $340,000 | 5,804 (Direct) | View |
| 2025-08-12 Sale | 2025-08-13 5:47 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director | 200 | $830 | $166,000 | 6,204 (Direct) | View |
| 2025-08-01 Sale | 2025-08-04 7:58 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 39,999 | $780 | $31,199,220 | 145,451 (Indirect Direct) | View |
| 2025-08-01 Sale | 2025-08-04 7:31 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 3,000 | $750 | $2,250,000 | 54,601 (Indirect Direct) | View |
| 2025-07-01 Sale | 2025-07-02 11:46 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 6,000 | $750 | $4,500,000 | 57,601 (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 |
| 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 |
| 2025-10-30 Tax Withholding | 2025-10-31 4:52 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 121,918 | $1,097 | 1,141,534 (Direct) | View |
| 2025-10-30 Tax Withholding | 2025-10-31 4:45 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 48,298 | $1,097 | 87,994 (Direct) | View |
| 2025-10-30 Tax Withholding | 2025-10-31 4:44 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 54,543 | $1,097 | 207,331 (Direct) | View |
| 2025-10-30 Tax Withholding | 2025-10-31 4:43 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 54,543 | $1,097 | 279,536 (Direct) | View |
| 2025-10-30 Tax Withholding | 2025-10-31 4:39 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 54,543 | $1,097 | 226,428 (Direct) | View |
| 2025-10-25 Option Award | 2025-10-28 9:38 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 135,520 | $0 | 261,874 (Direct) | View |
| 2025-10-25 Option Award | 2025-10-28 9:38 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 87,690 | $0 | 136,292 (Direct) | View |
| 2025-10-25 Option Award | 2025-10-28 9:37 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 302,920 | $0 | 1,263,452 (Direct) | View |
| 2025-10-25 Option Award | 2025-10-28 9:36 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 135,520 | $0 | 280,971 (Direct) | View |
| 2025-10-25 Option Award | 2025-10-28 9:35 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 135,520 | $0 | 334,079 (Direct) | View |
| 2025-08-19 Gift | 2025-08-21 5:09 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 2,499 | $0 | 185,327 (Indirect) | View |
| 2025-08-11 Gift | 2025-08-12 5:45 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 945 | $0 | 145,451 (Indirect) | View |
| 2025-08-06 Gift | 2025-08-08 12:40 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 8,254 | $0 | 131,417 (Indirect) | View |