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 |
| 2026-05-18 Sale | 2026-05-20 8:10 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO | 40,000 | $1,483 | $59,310,169 | 994,128 (Indirect Direct) | View |
| 2026-05-18 Sale | 2026-05-20 6:52 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | DEAN ROBERT W II Interim CFO | 4 | $1,563 | $6,253 | 5,965 (Indirect Direct) | View |
| 2026-05-15 Sale | 2026-05-19 7:09 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 12,000 | $1,561 | $18,736,850 | 262,004 (Indirect Direct) | View |
| 2026-05-06 Sale | 2026-05-08 7:37 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Elmiger Eugen J Director | 12,000 | $1,585 | $19,019,482 | 5,402 (Direct) | View |
| 2026-05-06 Sale | 2026-05-08 6:15 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming EVP, Global Operations | 30,000 | $1,655 | $49,636,560 | 230,750 (Indirect Direct) | View |
| 2026-05-06 Sale | 2026-05-08 2:36 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Wynne Eileen Director | 335 | $1,583 | $530,198 | 1,007 (Direct) | View |
| 2026-05-05 Sale | 2026-05-06 7:59 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director | 1,514 | $1,608 | $2,434,283 | 4,286 (Direct) | View |
| 2026-05-05 Sale | 2026-05-06 3:18 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 380 | $1,584 | $601,848 | 274,004 (Indirect Direct) | View |
| 2026-05-04 Sale | 2026-05-06 12:55 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 30 | $1,589 | $47,662 | 274,384 (Indirect Direct) | View |
| 2026-04-08 Sale | 2026-04-10 12:46 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 8,963 | $1,305 | $11,698,654 | 157,983 (Indirect Direct) | View |
| 2026-04-06 Sale | 2026-04-08 1:42 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 7,636 | $1,168 | $8,918,434 | 166,946 (Indirect Direct) | View |
| 2026-04-01 Sale | 2026-04-03 5:36 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 1,400 | $1,134 | $1,586,924 | 174,582 (Indirect Direct) | View |
| 2026-04-01 Sale | 2026-04-03 3:58 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 30 | $1,116 | $33,493 | 274,414 (Indirect Direct) | View |
| 2026-03-30 Sale | 2026-04-01 6:41 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria EVP & General Counsel | 25,674 | $1,011 | $25,943,638 | 175,982 (Indirect Direct) | View |
| 2026-03-20 Sale | 2026-03-24 7:02 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 30 | $1,095 | $32,852 | 274,444 (Indirect Direct) | View |
| 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 |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-05-13 Gift | 2026-05-15 7:45 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice EVP, WW Sales & Marketing | 1,563 | $0 | 248,907 (Indirect) | View |
| 2026-05-13 Other | 2026-05-15 4:15 pm | N/A N/A | MONOLITHIC POWER SYSTEMS INC | MPWR | DEAN ROBERT W II Interim CFO | 2,156 | $0 | 8,125 (Direct) | View |
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 |