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 |
2023-05-04 Sale |
2023-05-05 4:40 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
3,825 | $459.6 | $1,757,970 | 1,209,057 (Indirect Direct) |
View |
2023-05-04 Sale |
2023-05-05 4:39 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
991 | $459.6 | $455,464 | 274,262 (Direct) |
View |
2023-05-04 Sale |
2023-05-05 4:39 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
991 | $459.6 | $455,464 | 273,864 (Indirect Direct) |
View |
2023-05-04 Sale |
2023-05-05 4:39 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
991 | $459.6 | $455,464 | 321,436 (Indirect Direct) |
View |
2023-05-03 Sale |
2023-05-04 4:42 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
3,462 | $463.55 | $1,604,810 | 275,253 (Direct) |
View |
2023-05-03 Sale |
2023-05-04 4:42 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
3,462 | $463.55 | $1,604,810 | 322,427 (Indirect Direct) |
View |
2023-05-03 Sale |
2023-05-04 4:42 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
2,870 | $463.55 | $1,330,389 | 144,628 (Indirect Direct) |
View |
2023-05-03 Sale |
2023-05-04 4:41 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
3,462 | $463.55 | $1,604,810 | 274,855 (Indirect Direct) |
View |
2023-05-03 Sale |
2023-05-04 4:41 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
11,242 | $463.55 | $5,211,229 | 1,212,882 (Indirect Direct) |
View |
2023-04-03 Sale |
2023-04-06 4:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
4,360 | $487.99 | $2,127,636 | 270,030 (Direct) |
View |
2023-04-03 Sale |
2023-04-06 4:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
4,360 | $487.99 | $2,127,636 | 269,632 (Indirect Direct) |
View |
2023-04-03 Sale |
2023-04-06 4:49 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
4,360 | $487.99 | $2,127,636 | 317,204 (Indirect Direct) |
View |
2023-04-03 Sale |
2023-04-06 4:48 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
920 | $487.99 | $448,951 | 141,784 (Indirect Direct) |
View |
2023-04-03 Sale |
2023-04-06 4:48 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
11,100 | $487.99 | $5,416,689 | 1,195,914 (Indirect Direct) |
View |
2023-02-16 Sale |
2023-02-21 4:23 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
5,000 | $521.13 | $2,605,651 | 142,704 (Indirect Direct) |
View |
2023-02-15 Sale |
2023-02-17 5:25 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
13,000 | $519.54 | $6,754,010 | 321,564 (Indirect Direct) |
View |
2023-02-15 Sale |
2023-02-17 4:03 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
1,497 | $530 | $793,410 | 273,992 (Indirect Direct) |
View |
2023-02-13 Sale |
2023-02-13 7:37 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
1,373 | $492.31 | $675,942 | 147,657 (Indirect Direct) |
View |
2023-02-13 Sale |
2023-02-13 7:37 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
6,333 | $492.31 | $3,117,799 | 1,206,981 (Indirect Direct) |
View |
2023-02-13 Sale |
2023-02-13 7:36 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
1,639 | $492.31 | $806,896 | 334,542 (Indirect Direct) |
View |
2023-02-13 Sale |
2023-02-13 7:36 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
1,639 | $492.31 | $806,896 | 275,459 (Indirect Direct) |
View |
2023-02-13 Sale |
2023-02-13 7:36 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
1,639 | $492.31 | $806,896 | 274,360 (Direct) |
View |
2023-02-09 Sale |
2023-02-10 4:14 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
2,129 | $520 | $1,107,080 | 277,098 (Indirect Direct) |
View |
2023-02-08 Sale |
2023-02-10 4:14 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
6,922 | $462.41 | $3,200,802 | 336,181 (Indirect Direct) |
View |
2023-02-08 Sale |
2023-02-10 4:13 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
22,483 | $462.41 | $10,396,364 | 1,213,314 (Indirect Direct) |
View |
2023-02-08 Sale |
2023-02-10 4:13 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
5,684 | $462.41 | $2,628,338 | 149,030 (Indirect Direct) |
View |
2023-02-08 Sale |
2023-02-10 4:13 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
6,922 | $462.41 | $3,200,802 | 275,999 (Direct) |
View |
2023-02-08 Sale |
2023-02-10 4:13 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
6,922 | $462.41 | $3,200,802 | 279,227 (Indirect Direct) |
View |
2023-02-06 Sale |
2023-02-08 6:55 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
723 | $446.88 | $323,094 | 286,149 (Indirect Direct) |
View |
2023-02-06 Sale |
2023-02-08 6:55 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
723 | $446.88 | $323,094 | 282,921 (Direct) |
View |
2023-02-06 Sale |
2023-02-08 6:54 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
723 | $446.87 | $323,087 | 343,103 (Indirect Direct) |
View |
2023-02-06 Sale |
2023-02-08 6:54 pm |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
3,691 | $446.88 | $1,649,434 | 1,235,797 (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 |
2023-05-02 Option Award |
2023-05-04 4:42 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
8,685 | $0 | 275,253 (Direct) |
View |
2023-05-02 Option Award |
2023-05-04 4:42 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
8,685 | $0 | 322,427 (Direct) |
View |
2023-05-02 Option Award |
2023-05-04 4:42 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO |
5,714 | $0 | 144,628 (Direct) |
View |
2023-05-02 Option Award |
2023-05-04 4:41 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
8,685 | $0 | 274,855 (Direct) |
View |
2023-05-02 Option Award |
2023-05-04 4:41 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
28,210 | $0 | 1,212,882 (Direct) |
View |
2023-02-07 Option Award |
2023-02-09 6:06 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Wynne Eileen Director |
470 | $0 | 470 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 7:53 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Moyer James C Director |
470 | $0 | 48,981 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 7:53 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Zhou Jeff Director |
470 | $0 | 6,121 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 7:52 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Martinez Carintia Director |
470 | $0 | 1,595 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 7:52 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Lee Victor K Director |
470 | $0 | 29,884 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 7:52 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | CHANG KUO WEI HERBERT Director |
470 | $0 | 2,293 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 7:51 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Elmiger Eugen J Director |
470 | $0 | 20,530 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 6:55 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Xiao Deming Pres. of MPS Asia Operations |
34,740 | $0 | 286,149 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 6:55 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Tseng Saria VP & General Counsel |
34,740 | $0 | 282,921 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 6:54 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Sciammas Maurice Sr. V.P.of Sales and Marketing |
34,740 | $0 | 343,103 (Direct) |
View |
2023-02-07 Option Award |
2023-02-08 6:54 pm |
N/A N/A |
MONOLITHIC POWER SYSTEMS INC | MPWR | Hsing Michael CEO |
112,839 | $0 | 1,235,797 (Direct) |
View |