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 |
2021-01-04 Sale |
2021-01-05 5:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
5,325 | $368.26 | $1,960,990 | 333,606 (Indirect Direct) |
View |
2021-01-04 Sale |
2021-01-05 5:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
10,960 | $368.26 | $4,036,142 | 1,040,304 (Indirect Direct) |
View |
2021-01-04 Sale |
2021-01-05 5:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,305 | $368.26 | $1,585,364 | 240,372 (Direct) |
View |
2021-01-04 Sale |
2021-01-05 5:48 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
4,305 | $368.26 | $1,585,364 | 264,048 (Indirect Direct) |
View |
2020-12-21 Sale |
2020-12-22 5:52 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
1,418 | $346.52 | $491,362 | 118,564 (Direct) |
View |
2020-12-08 Sale |
2020-12-10 4:23 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Moyer James C Director |
15,000 | $320.7 | $4,810,467 | 320,131 (Indirect Direct) |
View |
2020-11-19 Sale |
2020-11-23 4:01 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
1,420 | $309.57 | $439,585 | 119,982 (Direct) |
View |
2020-11-13 Sale |
2020-11-17 4:42 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Moyer James C Director |
1,000 | $307.7 | $307,699 | 335,131 (Indirect Direct) |
View |
2020-11-13 Sale |
2020-11-17 4:18 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,886 | $307.7 | $1,503,418 | 245,321 (Direct) |
View |
2020-11-09 Sale |
2020-11-12 4:50 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
33,966 | $320.39 | $10,882,246 | 1,051,264 (Indirect Direct) |
View |
2020-11-10 Sale |
2020-11-12 4:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Moyer James C Director |
15,000 | $308.38 | $4,625,709 | 336,131 (Indirect Direct) |
View |
2020-11-09 Sale |
2020-11-10 4:40 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
5,377 | $333.51 | $1,793,307 | 338,931 (Indirect Direct) |
View |
2020-11-09 Sale |
2020-11-10 4:40 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
3,169 | $333.51 | $1,056,904 | 121,402 (Direct) |
View |
2020-11-06 Sale |
2020-11-10 4:38 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
8,338 | $344.03 | $2,868,509 | 268,353 (Indirect Direct) |
View |
2020-11-09 Sale |
2020-11-10 4:05 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,441 | $333.51 | $1,481,097 | 250,207 (Direct) |
View |
2020-11-04 Sale |
2020-11-05 4:02 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director |
3,000 | $326.33 | $978,999 | 1,048 (Direct) |
View |
2020-11-03 Sale |
2020-11-04 4:11 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
20,000 | $315.39 | $6,307,760 | 344,308 (Indirect Direct) |
View |
2020-10-19 Sale |
2020-10-21 4:34 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
1,534 | $315.49 | $483,961 | 124,571 (Direct) |
View |
2020-10-15 Sale |
2020-10-16 4:05 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
6,495 | $317.48 | $2,062,033 | 254,648 (Direct) |
View |
2020-10-01 Sale |
2020-10-02 7:24 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
27,500 | $276.64 | $7,607,465 | 1,085,230 (Indirect Direct) |
View |
2020-10-01 Sale |
2020-10-02 4:41 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
4,305 | $280.5 | $1,207,568 | 276,691 (Indirect Direct) |
View |
2020-10-01 Sale |
2020-10-02 4:36 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
905 | $280.5 | $253,856 | 126,105 (Direct) |
View |
2020-10-01 Sale |
2020-10-02 4:35 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
5,425 | $280.5 | $1,521,732 | 364,308 (Indirect Direct) |
View |
2020-10-01 Sale |
2020-10-02 4:02 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,305 | $280.5 | $1,207,568 | 261,143 (Direct) |
View |
2020-09-18 Sale |
2020-09-22 4:23 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
1,408 | $252.8 | $355,949 | 127,010 (Direct) |
View |
2020-09-08 Sale |
2020-09-10 5:11 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Moyer James C Director |
15,000 | $248.03 | $3,720,458 | 351,131 (Indirect Direct) |
View |
2020-08-28 Sale |
2020-09-01 4:47 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director |
393 | $267.16 | $104,994 | 11,176 (Direct) |
View |
2020-08-28 Sale |
2020-09-01 4:46 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director |
1,300 | $268 | $348,400 | 4,048 (Direct) |
View |
2020-08-26 Sale |
2020-08-27 4:59 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Moyer James C Director |
10,000 | $268.83 | $2,688,254 | 366,131 (Indirect Direct) |
View |
2020-08-19 Sale |
2020-08-20 5:24 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
1,404 | $277.23 | $389,231 | 128,418 (Direct) |
View |
2020-08-19 Sale |
2020-08-20 5:08 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,982 | $277.23 | $1,381,171 | 265,513 (Direct) |
View |
2020-08-13 Sale |
2020-08-17 8:04 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
4,917 | $281 | $1,381,677 | 281,056 (Indirect Direct) |
View |
2020-08-12 Sale |
2020-08-14 5:21 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director |
400 | $279.5 | $111,800 | 5,348 (Direct) |
View |
2020-08-10 Sale |
2020-08-12 5:10 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
4,410 | $274.4 | $1,210,111 | 285,853 (Indirect Direct) |
View |
2020-08-10 Sale |
2020-08-12 5:08 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
5,287 | $274.4 | $1,450,762 | 369,733 (Indirect Direct) |
View |
2020-08-10 Sale |
2020-08-12 5:07 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
3,116 | $274.4 | $855,036 | 129,822 (Direct) |
View |
2020-08-10 Sale |
2020-08-12 5:05 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
33,966 | $272.83 | $9,267,018 | 1,112,730 (Indirect Direct) |
View |
2020-08-10 Sale |
2020-08-12 4:03 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,410 | $274.4 | $1,210,111 | 270,365 (Direct) |
View |
2020-08-06 Sale |
2020-08-10 6:27 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director |
700 | $280.43 | $196,300 | 5,748 (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 |
2020-12-29 Gift |
2020-12-31 4:17 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
12,825 | $0 | 1,051,264 (Direct) |
View |
2020-08-17 Other |
2020-08-20 5:08 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
65 | $157.53 | 265,513 (Direct) |
View |
2020-08-17 Other |
2020-08-17 8:04 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
60 | $157.53 | 281,056 (Direct) |
View |