MPWR Monolithic Power Systems
Nasdaq · SEC CIK 1280452 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $708.68M 57 sales by 11 insiders
- Filings on record
- 443 since 2021-07-06, latest 2026-09-02 17:26
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Hsing Michael | CEO, Dir | — | $314.44M |
| Tseng Saria | EVP, GC | — | $150.90M |
| Sciammas Maurice | EVP, WW Sales, Marketing | — | $101.39M |
| Xiao Deming | EVP, Gbl Ops | — | $76.43M |
| BLEGEN THEODORE | EVP, CFO | — | $40.19M |
| Elmiger Eugen J | Dir | — | $19.02M |
| Zhou Jeff | Dir | — | $3.25M |
| Lee Victor K | Dir | — | $2.00M |
| Wynne Eileen | Dir | — | $530.2K |
| CHANG KUO WEI HERBERT | Dir | — | $312.2K |
Transactions 480
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-08-13 | 2025-08-12 | MPWR | Zhou Jeff | Dir | S - Sale | $830.00 | -200 | 6,204 | -3% | -$166.0K | |
| 2025-08-12 | 2025-08-11 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | -945 | 120.7K | -0.8% | $0 | |
| I | 2025-08-12 | 2025-08-11 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | +945 | 4,336 | +28% | $0 |
| MI | 2025-08-08 | 2025-08-06 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | G - Gift | $0.00 | 0 | 44.9K | New | $0 |
| 2025-08-04 | 2025-08-01 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $780.00 | -40.0K | 121.6K | -25% | -$31.20M | |
| 2025-08-04 | 2025-08-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $750.00 | -3,000 | 43.9K | -6% | -$2.25M | |
| 2025-07-02 | 2025-07-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $750.00 | -6,000 | 46.9K | -11% | -$4.50M | |
| MI | 2025-05-30 | 2025-05-28 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | G - Gift | $0.00 | 0 | 15.7K | New | $0 |
| 2025-05-13 | 2025-05-13 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $738.00 | -50 | 626 | -7% | -$36.9K | |
| I | 2025-05-12 | 2025-05-12 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $701.00 | -12.0K | 4,015 | -75% | -$8.41M |
| 2025-05-12 | 2025-05-12 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $698.00 | -100 | 676 | -13% | -$69.8K | |
| 2025-05-09 | 2025-05-08 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $650.00 | -100 | 776 | -11% | -$65.0K | |
| MI | 2025-05-09 | 2025-05-09 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | G - Gift | $0.00 | 0 | 17.2K | New | $0 |
| 2025-02-20 | 2025-02-18 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $700.00 | -5,200 | 834.9K | -0.6% | -$3.64M | |
| MI | 2025-02-20 | 2025-02-18 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | G - Gift | $0.00 | 0 | 19.1K | New | $0 |
| MI | 2025-02-13 | 2025-02-11 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | G - Gift | $0.00 | 0 | 37.1K | New | $0 |
| 2025-02-12 | 2025-02-10 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $717.10 | -662 | 161.6K | -0.4% | -$474.7K | |
| 2025-02-12 | 2025-02-10 | MPWR | Tseng Saria | EVP, GC | S - Sale | $717.10 | -663 | 159.0K | -0.4% | -$475.4K | |
| 2025-02-12 | 2025-02-10 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $717.10 | -662 | 102.3K | -0.6% | -$474.7K | |
| 2025-02-12 | 2025-02-10 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $717.10 | -2,594 | 840.1K | -0.3% | -$1.86M | |
| 2025-02-12 | 2025-02-10 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $717.10 | -532 | 52.9K | -1.0% | -$381.5K | |
| MI | 2025-02-11 | 2025-02-07 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $701.98 | -7,000 | 17.5K | -29% | -$4.91M |
| 2025-02-11 | 2025-02-07 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $700.00 | -12.0K | 842.7K | -1% | -$8.37M | |
| 2025-02-06 | 2025-02-04 | MPWR | Martinez Carintia | Dir | A - Grant | $0.00 | +335 | 2,278 | +17% | $0 | |
| 2025-02-06 | 2025-02-04 | MPWR | Lee Victor K | Dir | A - Grant | $0.00 | +335 | 29.6K | +1% | $0 | |
| 2025-02-06 | 2025-02-04 | MPWR | CHANG KUO WEI HERBERT | Dir | A - Grant | $0.00 | +335 | 876 | +62% | $0 | |
| 2025-02-06 | 2025-02-04 | MPWR | Elmiger Eugen J | Dir | A - Grant | $0.00 | +335 | 21.2K | +2% | $0 | |
| 2025-02-06 | 2025-02-04 | MPWR | Zhou Jeff | Dir | A - Grant | $0.00 | +335 | 6,404 | +6% | $0 | |
| 2025-02-06 | 2025-02-04 | MPWR | Wynne Eileen | Dir | A - Grant | $0.00 | +335 | 1,153 | +41% | $0 | |
| 2025-01-28 | 2025-01-24 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $700.00 | -3,636 | 854.6K | -0.4% | -$2.55M | |
| 2024-12-11 | 2024-12-09 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $600.00 | -2,500 | 53.4K | -4% | -$1.50M | |
| 2024-11-13 | 2024-11-08 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $765.15 | -2,812 | 858.3K | -0.3% | -$2.15M | |
| 2024-11-13 | 2024-11-08 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $765.15 | -734 | 55.9K | -1% | -$561.6K | |
| 2024-11-13 | 2024-11-08 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $765.14 | -866 | 162.2K | -0.5% | -$662.6K | |
| 2024-11-13 | 2024-11-08 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $765.14 | -866 | 103.0K | -0.8% | -$662.6K | |
| 2024-11-13 | 2024-11-08 | MPWR | Tseng Saria | EVP, GC | S - Sale | $765.14 | -866 | 159.6K | -0.5% | -$662.6K | |
| M | 2024-11-05 | 2024-11-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $772.96 | -2,500 | 58.1K | -4% | -$1.93M |
| M | 2024-10-08 | 2024-10-07 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $929.59 | -11.0K | 114.6K | -9% | -$10.23M |
| M | 2024-10-02 | 2024-10-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $908.36 | -2,500 | 60.9K | -4% | -$2.27M |
| M | 2024-09-03 | 2024-09-03 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $904.20 | -2,500 | 64.0K | -4% | -$2.26M |
| I | 2024-08-29 | 2024-08-27 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $950.00 | -9,259 | 20.5K | -31% | -$8.80M |
| I | 2024-08-29 | 2024-08-29 | MPWR | Moyer James C | Dir | G - Gift | $0.00 | -11.7K | 0 | -100% | $0 |
| 2024-08-22 | 2024-08-22 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | -8,968 | 163.1K | -5% | $0 | |
| I | 2024-08-22 | 2024-08-22 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $950.00 | -10.0K | 29.7K | -25% | -$9.50M |
| I | 2024-08-22 | 2024-08-22 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | +8,968 | 39.7K | +29% | $0 |
| I | 2024-08-21 | 2024-08-19 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | +30.3K | 30.7K | +6,657% | $0 |
| 2024-08-21 | 2024-08-19 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | -30.3K | 172.1K | -15% | $0 | |
| M | 2024-08-15 | 2024-08-15 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $893.44 | -200 | 641 | -24% | -$178.7K |
| M | 2024-08-13 | 2024-08-09+ | MPWR | Hsing Michael | CEO, Dir | S - Sale | $827.18 | -4,263 | 861.6K | -0.5% | -$3.53M |
| I | 2024-08-12 | 2024-08-08 | MPWR | Moyer James C | Dir | G - Gift | $0.00 | -22.0K | 11.7K | -65% | $0 |
| 2024-08-12 | 2024-08-08 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $778.39 | -859 | 114.8K | -0.7% | -$668.6K | |
| 2024-08-12 | 2024-08-08 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $778.39 | -2,790 | 865.3K | -0.3% | -$2.17M | |
| 2024-08-12 | 2024-08-08 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $778.39 | -859 | 202.4K | -0.4% | -$668.6K | |
| 2024-08-12 | 2024-08-08 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $778.39 | -728 | 64.2K | -1% | -$566.7K | |
| 2024-08-12 | 2024-08-08 | MPWR | Tseng Saria | EVP, GC | S - Sale | $778.39 | -859 | 160.5K | -0.5% | -$668.6K | |
| M | 2024-08-02 | 2024-08-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $852.51 | -2,500 | 66.1K | -4% | -$2.13M |
| 2024-07-24 | 2024-07-22 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $831.58 | -3,205 | 115.7K | -3% | -$2.67M | |
| 2024-07-24 | 2024-07-22 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $831.58 | -3,205 | 203.2K | -2% | -$2.67M | |
| 2024-07-24 | 2024-07-22 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $831.58 | -2,580 | 67.4K | -4% | -$2.15M | |
| 2024-07-24 | 2024-07-22 | MPWR | Tseng Saria | EVP, GC | S - Sale | $831.58 | -3,205 | 161.4K | -2% | -$2.67M | |
| 2024-07-24 | 2024-07-22 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $831.58 | -9,614 | 868.1K | -1% | -$7.99M | |
| M | 2024-07-10 | 2024-07-08 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $843.83 | -11.0K | 119.0K | -8% | -$9.28M |
| M | 2024-07-02 | 2024-07-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $804.19 | -2,500 | 70.0K | -3% | -$2.01M |
| M | 2024-07-02 | 2024-07-01 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $804.57 | -2,672 | 880.2K | -0.3% | -$2.15M |
| 2024-07-02 | 2024-07-02 | MPWR | Tseng Saria | EVP, GC | S - Sale | $824.65 | -1,858 | 164.6K | -1% | -$1.53M | |
| M | 2024-07-02 | 2024-07-01 | MPWR | Tseng Saria | EVP, GC | S - Sale | $808.20 | -37.1K | 201.2K | -16% | -$29.98M |
| 2024-07-01 | 2024-06-28 | MPWR | Lee Victor K | Dir | S - Sale | $820.46 | -1,000 | 29.2K | -3% | -$820.5K | |
| M | 2024-06-05 | 2024-06-03 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $731.08 | -8,000 | 881.2K | -0.9% | -$5.85M |
| M | 2024-06-05 | 2024-06-03+ | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $731.77 | -2,500 | 72.6K | -3% | -$1.83M |
| 2024-05-22 | 2024-05-20 | MPWR | Zhou Jeff | Dir | S - Sale | $750.00 | -200 | 6,069 | -3% | -$150.0K | |
| 2024-05-22 | 2024-05-22 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $769.40 | -1,300 | 206.4K | -0.6% | -$1.00M | |
| 2024-05-22 | 2024-05-20 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $750.00 | -200 | 741 | -21% | -$150.0K | |
| MI | 2024-05-15 | 2024-05-13 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | G - Gift | $0.00 | 0 | 13.4K | New | $0 |
| M | 2024-05-15 | 2024-05-15 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $735.00 | -200 | 1,041 | -16% | -$147.0K |
| 2024-05-10 | 2024-05-10 | MPWR | Xiao Deming | EVP, Gbl Ops | G - Gift | $0.00 | -29 | 207.7K | -0.0% | $0 | |
| 2024-05-09 | 2024-05-08 | MPWR | Xiao Deming | EVP, Gbl Ops | S - Sale | $690.02 | -869 | 207.7K | -0.4% | -$599.6K | |
| 2024-05-09 | 2024-05-08 | MPWR | Tseng Saria | EVP, GC | S - Sale | $690.02 | -869 | 203.5K | -0.4% | -$599.6K | |
| 2024-05-09 | 2024-05-08 | MPWR | Sciammas Maurice | EVP, WW Sales, Marketing | S - Sale | $690.00 | -869 | 129.9K | -0.7% | -$599.6K | |
| 2024-05-09 | 2024-05-08 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $689.98 | -737 | 75.0K | -1.0% | -$508.5K | |
| 2024-05-09 | 2024-05-08 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $690.00 | -2,824 | 888.4K | -0.3% | -$1.95M | |
| M | 2024-05-03 | 2024-05-01 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $661.85 | -8,000 | 891.3K | -0.9% | -$5.29M |
| M | 2024-05-03 | 2024-05-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $663.29 | -2,500 | 77.9K | -3% | -$1.66M |
| M | 2024-04-09 | 2024-04-08 | MPWR | Sciammas Maurice | EVP of Sales, Marketing | S - Sale | $681.83 | -11.0K | 138.0K | -7% | -$7.50M |
| MI | 2024-04-03 | 2024-04-01 | MPWR | Sciammas Maurice | EVP of Sales, Marketing | G - Gift | $0.00 | 0 | 27.0K | New | $0 |
| M | 2024-04-03 | 2024-04-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $677.40 | -2,500 | 78.8K | -3% | -$1.69M |
| M | 2024-04-03 | 2024-04-01 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $677.44 | -8,000 | 906.8K | -0.9% | -$5.42M |
| M | 2024-03-04 | 2024-03-01 | MPWR | BLEGEN THEODORE | CFO | S - Sale | $725.76 | -2,500 | 80.8K | -3% | -$1.81M |
| M | 2024-03-04 | 2024-03-01 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $726.08 | -8,000 | 915.1K | -0.9% | -$5.81M |
| 2024-02-29 | 2024-02-29 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $706.34 | -250 | 1,141 | -18% | -$176.6K | |
| 2024-02-23 | 2024-02-22 | MPWR | CHANG KUO WEI HERBERT | Dir | S - Sale | $750.00 | -250 | 1,391 | -15% | -$187.5K | |
| MI | 2024-02-14 | 2024-02-13 | MPWR | Moyer James C | Dir | G - Gift | $0.00 | 0 | 4,000 | New | $0 |
| 2024-02-13 | 2024-02-12 | MPWR | Zhou Jeff | Dir | S - Sale | $750.57 | -200 | 6,269 | -3% | -$150.1K | |
| MI | 2024-02-12 | 2024-02-12 | MPWR | Moyer James C | Dir | G - Gift | $0.00 | 0 | 37.7K | New | $0 |
| 2024-02-09 | 2024-02-08 | MPWR | Sciammas Maurice | SVPof Sales, Marketing | S - Sale | $680.00 | -859 | 141.7K | -0.6% | -$584.1K | |
| 2024-02-09 | 2024-02-08 | MPWR | BLEGEN THEODORE | CFO | S - Sale | $680.00 | -728 | 83.2K | -0.9% | -$495.0K | |
| 2024-02-09 | 2024-02-08 | MPWR | Xiao Deming | Pres. of MPS Asia Ops | S - Sale | $680.00 | -859 | 208.6K | -0.4% | -$584.1K | |
| 2024-02-09 | 2024-02-08 | MPWR | Tseng Saria | GC, Executive VP | S - Sale | $680.00 | -859 | 204.3K | -0.4% | -$584.1K | |
| 2024-02-09 | 2024-02-08 | MPWR | Hsing Michael | CEO, Dir | S - Sale | $680.00 | -2,790 | 915.2K | -0.3% | -$1.90M | |
| 2024-02-08 | 2024-02-06 | MPWR | Martinez Carintia | Dir | A - Grant | $0.00 | +348 | 1,943 | +22% | $0 | |
| 2024-02-08 | 2024-02-06 | MPWR | CHANG KUO WEI HERBERT | Dir | A - Grant | $0.00 | +348 | 1,641 | +27% | $0 |
Purchase Sale Sale after option exercise All abbreviations