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 |
| 2026-02-06 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 |
| 2026-02-02 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 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 |
| 2025-12-01 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 |
| 2025-11-03 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 |
| 2025-10-01 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 |
| 2025-09-02 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 |
| 2025-08-01 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 |
| 2025-02-10 Sale | 2025-02-12 3:43 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 532 | $717.1 | $381,498 | 63,574 (Indirect Direct) | View |
| 2024-12-09 Sale | 2024-12-11 7:21 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $600 | $1,500,000 | 64,106 (Indirect Direct) | View |
| 2024-11-08 Sale | 2024-11-13 5:13 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 734 | $765.15 | $561,620 | 66,606 (Indirect Direct) | View |
| 2024-11-01 Sale | 2024-11-05 5:31 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $772.96 | $1,932,405 | 67,340 (Indirect Direct) | View |
| 2024-10-01 Sale | 2024-10-02 11:08 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $908.36 | $2,270,900 | 69,840 (Indirect Direct) | View |
| 2024-09-03 Sale | 2024-09-03 7:40 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $904.2 | $2,260,506 | 72,340 (Indirect Direct) | View |
| 2024-08-08 Sale | 2024-08-12 2:37 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 728 | $778.39 | $566,668 | 74,840 (Indirect Direct) | View |
| 2024-08-01 Sale | 2024-08-02 6:11 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $852.51 | $2,131,264 | 75,568 (Indirect Direct) | View |
| 2024-07-22 Sale | 2024-07-24 4:39 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,580 | $831.58 | $2,145,476 | 78,068 (Indirect Direct) | View |
| 2024-07-01 Sale | 2024-07-02 6:24 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $804.19 | $2,010,485 | 80,648 (Indirect Direct) | View |
| 2024-06-03 Sale | 2024-06-05 2:12 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $731.77 | $1,829,437 | 83,148 (Indirect Direct) | View |
| 2024-05-08 Sale | 2024-05-09 12:50 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 737 | $689.98 | $508,515 | 85,648 (Indirect Direct) | View |
| 2024-05-01 Sale | 2024-05-03 11:41 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP and CFO | 2,500 | $663.29 | $1,658,215 | 86,385 (Indirect Direct) | View |
| 2024-04-01 Sale | 2024-04-03 4:17 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE EVP & CFO | 2,500 | $677.4 | $1,693,493 | 88,885 (Indirect Direct) | View |
| 2024-03-01 Sale | 2024-03-04 11:07 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 2,500 | $725.76 | $1,814,388 | 91,385 (Indirect Direct) | View |
| 2024-02-08 Sale | 2024-02-09 2:02 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 728 | $680 | $495,040 | 93,835 (Indirect Direct) | View |
| 2024-02-05 Sale | 2024-02-07 11:17 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 867 | $641 | $555,747 | 94,563 (Indirect Direct) | View |
| 2024-02-01 Sale | 2024-02-05 11:19 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 2,500 | $603.26 | $1,508,138 | 95,430 (Indirect Direct) | View |
| 2024-01-04 Sale | 2024-01-08 2:41 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 27,613 | $583.14 | $16,102,245 | 97,930 (Indirect Direct) | View |
| 2024-01-02 Sale | 2024-01-03 11:18 am | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 2,500 | $615.71 | $1,539,272 | 125,543 (Indirect Direct) | View |
| 2023-12-18 Sale | 2023-12-19 12:13 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 2,500 | $631.36 | $1,578,398 | 128,043 (Indirect Direct) | View |
| 2023-11-08 Sale | 2023-11-09 6:05 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 712 | $490.39 | $349,158 | 130,543 (Indirect Direct) | View |
| 2023-11-06 Sale | 2023-11-07 5:02 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 847 | $492.92 | $417,503 | 131,255 (Indirect Direct) | View |
| 2023-10-02 Sale | 2023-10-04 4:21 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 905 | $458.3 | $414,762 | 132,102 (Indirect Direct) | View |
| 2023-08-08 Sale | 2023-08-10 6:02 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 724 | $530.28 | $383,923 | 133,007 (Indirect Direct) | View |
| 2023-08-04 Sale | 2023-08-07 5:03 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 852 | $526.52 | $448,595 | 133,731 (Indirect Direct) | View |
| 2023-07-21 Sale | 2023-07-25 6:35 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 7,575 | $534.23 | $4,046,792 | 134,583 (Indirect Direct) | View |
| 2023-07-03 Sale | 2023-07-05 4:28 pm | MONOLITHIC POWER SYSTEMS INC | MPWR | BLEGEN THEODORE CFO | 905 | $537.79 | $486,700 | 142,158 (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 |
| 2026-02-03 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 |
| 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 |
| 2025-10-25 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 |