MPWR
Monolithic Power Systems insider trading
Information Technology · Heavy selling
Close · Oct 5, 2026
$1,479.89
+53.9% over 12 months
Share price and insider trades
MPWR closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$746M
Insiders buying0
Insiders selling11
Valuation, profit and volume
P/E (trailing)n/aSector median 32.1
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.7×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 Monolithic Power Systems insiders reported open-market purchases totaling $0, while 11 insiders reported sales totaling $746M. 152 of 250 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales. 37 grants, option exercises and tax withholdings are not shown.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 30SEC | Michael HsingCEO | Sell Plan | 10,967 | $1,351.43 | $14.8M | +9.5% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 6,343 | $1,347.15 | $8.5M | +9.9% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 5,783 | $1,343.76 | $7.8M | +10.1% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 2,949 | $1,338.66 | $3.9M | +10.6% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 2,121 | $1,328.54 | $2.8M | +11.4% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 1,111 | $1,333.34 | $1.5M | +11.0% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 596 | $1,323.31 | $789K | +11.8% | — |
| Sep 30SEC | Michael HsingCEO | Sell Plan | 130 | $1,356.94 | $176K | +9.1% | — |
| Aug 26SEC | Robert W Dean IICFO | Sell | 32 | $1,297.72 | $42K | +14.0% | — |
| Aug 25SEC | Kuo Wei Herbert ChangDirector | Sell | 50 | $1,281.57 | $64K | +15.5% | — |
| Aug 19SEC | Robert W Dean IICFO | Sell | 6 | $1,413.64 | $8K | +4.7% | — |
| Aug 13SEC | Kuo Wei Herbert ChangDirector | Sell | 50 | $1,420.00 | $71K | +4.2% | — |
| Aug 6SEC | Robert W Dean IICFO | Sell | 105 | $1,344.27 | $141K | +10.1% | — |
| Aug 5SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 30 | $1,343.94 | $40K | +10.1% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 5,640 | $1,352.95 | $7.6M | +9.4% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 1,864 | $1,344.16 | $2.5M | +10.1% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 1,506 | $1,348.91 | $2.0M | +9.7% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 1,460 | $1,339.59 | $2.0M | +10.5% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 776 | $1,334.59 | $1.0M | +10.9% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 527 | $1,314.03 | $692K | +12.6% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 472 | $1,375.47 | $649K | +7.6% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 464 | $1,329.30 | $617K | +11.3% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 418 | $1,378.73 | $576K | +7.3% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 410 | $1,384.11 | $567K | +6.9% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 409 | $1,323.93 | $541K | +11.8% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 274 | $1,318.42 | $361K | +12.2% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 240 | $1,369.18 | $329K | +8.1% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 213 | $1,396.16 | $297K | +6.0% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 117 | $1,400.45 | $164K | +5.7% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 110 | $1,405.71 | $155K | +5.3% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 50 | $1,388.19 | $69K | +6.6% | — |
| Jul 17SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 50 | $1,359.36 | $68K | +8.9% | — |
| Jul 6SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 30 | $1,351.61 | $41K | +9.5% | — |
| Jun 3SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 30 | $1,533.95 | $46K | -3.5% | — |
| May 29SEC | Saria TsengGeneral Counsel | Sell | 7,565 | $1,700.00 | $12.9M | -12.9% | — |
| May 28SEC | Robert W Dean IICFO | Sell | 22 | $1,649.56 | $36K | -10.3% | — |
| May 27SEC | Saria TsengGeneral Counsel | Sell | 5,000 | $1,586.43 | $7.9M | -6.7% | — |
| May 27SEC | Jeff ZhouDirector | Sell | 486 | $1,680.00 | $816K | -11.9% | — |
| May 20SEC | Michael HsingCEO | Sell | 6,688 | $1,486.76 | $9.9M | -0.5% | — |
| May 20SEC | Michael HsingCEO | Sell | 5,819 | $1,467.62 | $8.5M | +0.8% | — |
| May 20SEC | Michael HsingCEO | Sell | 5,737 | $1,482.51 | $8.5M | -0.2% | — |
| May 20SEC | Michael HsingCEO | Sell | 5,049 | $1,472.84 | $7.4M | +0.5% | — |
| May 20SEC | Michael HsingCEO | Sell | 4,082 | $1,476.96 | $6.0M | +0.2% | — |
| May 20SEC | Michael HsingCEO | Sell | 3,769 | $1,507.70 | $5.7M | -1.8% | — |
| May 20SEC | Michael HsingCEO | Sell | 3,424 | $1,462.61 | $5.0M | +1.2% | — |
| May 20SEC | Michael HsingCEO | Sell | 2,929 | $1,503.05 | $4.4M | -1.5% | — |
| May 20SEC | Michael HsingCEO | Sell | 862 | $1,491.48 | $1.3M | -0.8% | — |
| May 20SEC | Michael HsingCEO | Sell | 608 | $1,499.46 | $912K | -1.3% | — |
| May 20SEC | Michael HsingCEO | Sell | 551 | $1,513.11 | $834K | -2.2% | — |
| May 20SEC | Michael HsingCEO | Sell | 352 | $1,518.15 | $534K | -2.5% | — |
| May 20SEC | Michael HsingCEO | Sell | 130 | $1,521.43 | $198K | -2.7% | — |
| May 20SEC | Robert W Dean IICFO | Sell | 4 | $1,563.28 | $6K | -5.3% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 3,741 | $1,550.36 | $5.8M | -4.5% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 2,020 | $1,567.15 | $3.2M | -5.6% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 2,010 | $1,562.01 | $3.1M | -5.3% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 1,717 | $1,557.48 | $2.7M | -5.0% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 1,312 | $1,571.49 | $2.1M | -5.8% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 703 | $1,577.75 | $1.1M | -6.2% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 447 | $1,582.21 | $707K | -6.5% | — |
| May 19SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 50 | $1,585.51 | $79K | -6.7% | — |
| May 8SEC | Deming XiaoEvp, Global Operations | Sell | 14,167 | $1,652.80 | $23.4M | -10.5% | — |
| May 8SEC | Deming XiaoEvp, Global Operations | Sell | 11,597 | $1,657.93 | $19.2M | -10.7% | — |
| May 8SEC | Deming XiaoEvp, Global Operations | Sell | 3,329 | $1,648.38 | $5.5M | -10.2% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 2,619 | $1,596.42 | $4.2M | -7.3% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 2,587 | $1,586.81 | $4.1M | -6.7% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 1,879 | $1,581.81 | $3.0M | -6.4% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 1,355 | $1,591.38 | $2.2M | -7.0% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 1,078 | $1,571.58 | $1.7M | -5.8% | — |
| May 8SEC | Deming XiaoEvp, Global Operations | Sell | 907 | $1,661.38 | $1.5M | -10.9% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 834 | $1,575.57 | $1.3M | -6.1% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 814 | $1,566.36 | $1.3M | -5.5% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 514 | $1,600.14 | $822K | -7.5% | — |
| May 8SEC | Eileen WynneDirector | Sell | 335 | $1,582.68 | $530K | -6.5% | — |
| May 8SEC | Eugen J ElmigerDirector | Sell | 320 | $1,559.88 | $499K | -5.1% | — |
| May 6SEC | Jeff ZhouDirector | Sell | 500 | $1,650.00 | $825K | -10.3% | — |
| May 6SEC | Jeff ZhouDirector | Sell | 514 | $1,574.48 | $809K | -6.0% | — |
| May 6SEC | Jeff ZhouDirector | Sell | 500 | $1,600.00 | $800K | -7.5% | — |
| May 6SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 380 | $1,583.81 | $602K | -6.6% | — |
| May 6SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 30 | $1,588.73 | $48K | -6.9% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 4,244 | $1,312.82 | $5.6M | +12.7% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 1,279 | $1,308.30 | $1.7M | +13.1% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 840 | $1,319.25 | $1.1M | +12.2% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 800 | $1,302.52 | $1.0M | +13.6% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 560 | $1,266.48 | $709K | +16.9% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 400 | $1,292.08 | $517K | +14.5% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 360 | $1,270.29 | $457K | +16.5% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 240 | $1,279.55 | $307K | +15.7% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 120 | $1,321.94 | $159K | +11.9% | — |
| Apr 10SEC | Saria TsengGeneral Counsel | Sell Plan | 120 | $1,287.12 | $154K | +15.0% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 2,036 | $1,170.38 | $2.4M | +26.4% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 1,680 | $1,176.35 | $2.0M | +25.8% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 1,396 | $1,179.50 | $1.6M | +25.5% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 684 | $1,165.66 | $797K | +27.0% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 560 | $1,159.62 | $649K | +27.6% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 556 | $1,144.42 | $636K | +29.3% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 480 | $1,149.05 | $552K | +28.8% | — |
| Apr 8SEC | Saria TsengGeneral Counsel | Sell Plan | 244 | $1,139.96 | $278K | +29.8% | — |
| Apr 3SEC | Saria TsengGeneral Counsel | Sell Plan | 576 | $1,131.24 | $652K | +30.8% | — |
| Apr 3SEC | Saria TsengGeneral Counsel | Sell Plan | 292 | $1,136.99 | $332K | +30.2% | — |
| Apr 3SEC | Saria TsengGeneral Counsel | Sell Plan | 188 | $1,135.91 | $214K | +30.3% | — |
| Apr 3SEC | Saria TsengGeneral Counsel | Sell Plan | 184 | $1,132.15 | $208K | +30.7% | — |
| Apr 3SEC | Saria TsengGeneral Counsel | Sell Plan | 160 | $1,134.14 | $181K | +30.5% | — |
| Apr 3SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 30 | $1,116.44 | $33K | +32.6% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 9,080 | $1,005.18 | $9.1M | +47.2% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 5,154 | $1,000.81 | $5.2M | +47.9% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 3,360 | $1,009.63 | $3.4M | +46.6% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 3,194 | $1,017.22 | $3.2M | +45.5% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 2,440 | $1,029.21 | $2.5M | +43.8% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 2,200 | $1,023.00 | $2.3M | +44.7% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 166 | $1,035.60 | $172K | +42.9% | — |
| Apr 1SEC | Saria TsengGeneral Counsel | Sell Plan | 80 | $1,041.12 | $83K | +42.1% | — |
| Mar 24SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell Plan | 30 | $1,095.07 | $33K | +35.1% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 12,731 | $1,155.71 | $14.7M | +28.1% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 4,992 | $1,159.84 | $5.8M | +27.6% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 4,001 | $1,164.92 | $4.7M | +27.0% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 3,640 | $1,205.82 | $4.4M | +22.7% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 2,076 | $1,168.80 | $2.4M | +26.6% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 1,440 | $1,217.12 | $1.8M | +21.6% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 1,440 | $1,200.81 | $1.7M | +23.2% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 1,240 | $1,210.11 | $1.5M | +22.3% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 600 | $1,194.34 | $717K | +23.9% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 480 | $1,180.79 | $567K | +25.3% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 200 | $1,173.39 | $235K | +26.1% | — |
| Feb 17SEC | Michael HsingCEO | Sell Plan | 160 | $1,188.23 | $190K | +24.5% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 14,578 | $1,197.20 | $17.5M | +23.6% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 6,079 | $1,192.67 | $7.3M | +24.1% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 2,799 | $1,177.67 | $3.3M | +25.7% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 2,104 | $1,188.17 | $2.5M | +24.6% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 1,987 | $1,172.92 | $2.3M | +26.2% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 1,542 | $1,182.82 | $1.8M | +25.1% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 1,533 | $1,167.62 | $1.8M | +26.7% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 1,366 | $1,163.71 | $1.6M | +27.2% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 649 | $1,202.28 | $780K | +23.1% | — |
| Feb 13SEC | Michael HsingCEO | Sell Plan | 363 | $1,158.71 | $421K | +27.7% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 16,080 | $1,141.88 | $18.4M | +29.6% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 6,325 | $1,136.75 | $7.2M | +30.2% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 4,302 | $1,132.01 | $4.9M | +30.7% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 3,864 | $1,145.90 | $4.4M | +29.1% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 1,215 | $1,151.11 | $1.4M | +28.6% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 880 | $1,176.04 | $1.0M | +25.8% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 694 | $1,154.96 | $802K | +28.1% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 360 | $1,161.41 | $418K | +27.4% | — |
| Feb 12SEC | Michael HsingCEO | Sell Plan | 280 | $1,197.26 | $335K | +23.6% | — |
| Feb 12SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 200 | $1,179.97 | $236K | +25.4% | — |
| Feb 11SEC | Victor K LeeDirector | Sell Plan | 400 | $1,212.16 | $485K | +22.1% | — |
| Feb 10SEC | Michael HsingCEO | Sell | 54,923 | $1,171.16 | $64.3M | +26.4% | — |
| Feb 10SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 22,875 | $1,171.16 | $26.8M | +26.4% | — |
| Feb 10SEC | Saria TsengGeneral Counsel | Sell | 22,875 | $1,171.16 | $26.8M | +26.4% | — |
| Feb 10SEC | Deming XiaoEvp, Global Operations | Sell | 22,875 | $1,171.16 | $26.8M | +26.4% | — |
| Feb 10SEC | Theodore BlegenCFO | Sell | 21,725 | $1,171.16 | $25.4M | +26.4% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 379 | $1,133.47 | $430K | +30.6% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 322 | $1,132.67 | $365K | +30.7% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 320 | $1,130.48 | $362K | +30.9% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 241 | $1,134.41 | $273K | +30.5% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 240 | $1,129.28 | $271K | +31.0% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 240 | $1,128.43 | $271K | +31.1% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 220 | $1,110.58 | $244K | +33.3% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 200 | $1,126.58 | $225K | +31.4% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 198 | $1,131.70 | $224K | +30.8% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 120 | $1,136.35 | $136K | +30.2% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 120 | $1,135.49 | $136K | +30.3% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 80 | $1,139.49 | $91K | +29.9% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 80 | $1,137.81 | $91K | +30.1% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 80 | $1,127.39 | $90K | +31.3% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 80 | $1,120.77 | $90K | +32.0% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 40 | $1,122.56 | $45K | +31.8% | — |
| Feb 4SEC | Theodore BlegenCFO | Sell Plan | 40 | $1,117.11 | $45K | +32.5% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 650 | $944.35 | $614K | +56.7% | — |
| Jan 6SEC | Victor K LeeDirector | Sell Plan | 600 | $930.86 | $559K | +59.0% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 539 | $943.71 | $509K | +56.8% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 460 | $938.52 | $432K | +57.7% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 406 | $941.60 | $382K | +57.2% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 194 | $930.86 | $181K | +59.0% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 120 | $936.50 | $112K | +58.0% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 117 | $939.75 | $110K | +57.5% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 80 | $946.62 | $76K | +56.3% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 80 | $935.33 | $75K | +58.2% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 80 | $933.64 | $75K | +58.5% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 80 | $927.61 | $74K | +59.5% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 74 | $942.42 | $70K | +57.0% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 40 | $945.00 | $38K | +56.6% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 40 | $940.03 | $38K | +57.4% | — |
| Jan 6SEC | Theodore BlegenCFO | Sell Plan | 40 | $934.74 | $37K | +58.3% | — |
| Dec 29SEC | Victor K LeeDirector | Sell Plan | 280 | $950.64 | $266K | +55.7% | — |
| Dec 29SEC | Victor K LeeDirector | Sell Plan | 200 | $953.70 | $191K | +55.2% | — |
| Dec 29SEC | Victor K LeeDirector | Sell Plan | 197 | $949.70 | $187K | +55.8% | — |
| Dec 29SEC | Victor K LeeDirector | Sell Plan | 160 | $951.60 | $152K | +55.5% | — |
| Dec 29SEC | Victor K LeeDirector | Sell Plan | 83 | $952.37 | $79K | +55.4% | — |
| Dec 29SEC | Victor K LeeDirector | Sell Plan | 80 | $955.08 | $76K | +54.9% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 1,984 | $909.00 | $1.8M | +62.8% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 480 | $908.69 | $436K | +62.9% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 120 | $904.38 | $109K | +63.6% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 80 | $907.59 | $73K | +63.1% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 80 | $906.84 | $73K | +63.2% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 80 | $901.88 | $72K | +64.1% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 56 | $911.59 | $51K | +62.3% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 40 | $902.31 | $36K | +64.0% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 40 | $900.88 | $36K | +64.3% | — |
| Dec 2SEC | Theodore BlegenCFO | Sell Plan | 40 | $899.73 | $36K | +64.5% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 10,360 | $926.02 | $9.6M | +59.8% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 10,200 | $907.21 | $9.3M | +63.1% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 2,238 | $929.29 | $2.1M | +59.2% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 2,066 | $896.37 | $1.9M | +65.1% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 1,845 | $927.41 | $1.7M | +59.6% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 1,625 | $895.63 | $1.5M | +65.2% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 1,327 | $924.32 | $1.2M | +60.1% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 1,200 | $923.54 | $1.1M | +60.2% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 1,126 | $925.55 | $1.0M | +59.9% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 984 | $928.60 | $914K | +59.4% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 888 | $908.49 | $807K | +62.9% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 880 | $901.58 | $793K | +64.1% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 754 | $897.54 | $677K | +64.9% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 680 | $930.48 | $633K | +59.0% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 556 | $909.35 | $506K | +62.7% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 385 | $894.54 | $344K | +65.4% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 359 | $910.42 | $327K | +62.6% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 346 | $900.41 | $312K | +64.4% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 324 | $911.92 | $295K | +62.3% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 320 | $899.37 | $288K | +64.5% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 272 | $906.33 | $247K | +63.3% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 240 | $922.78 | $221K | +60.4% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 240 | $912.30 | $219K | +62.2% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 200 | $904.39 | $181K | +63.6% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 160 | $905.32 | $145K | +63.5% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 160 | $903.54 | $145K | +63.8% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 145 | $898.38 | $130K | +64.7% | — |
| Nov 28SEC | Saria TsengGeneral Counsel | Sell | 120 | $902.07 | $108K | +64.1% | — |
| Nov 25SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 3,976 | $895.23 | $3.6M | +65.3% | — |
| Nov 25SEC | Kuo Wei Herbert ChangDirector | Sell | 100 | $896.97 | $90K | +65.0% | — |
| Nov 24SEC | Kuo Wei Herbert ChangDirector | Sell | 100 | $873.97 | $87K | +69.3% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 6,513 | $883.50 | $5.8M | +67.5% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 3,776 | $880.58 | $3.3M | +68.1% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 3,344 | $882.51 | $3.0M | +67.7% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 2,469 | $881.42 | $2.2M | +67.9% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 2,149 | $884.44 | $1.9M | +67.3% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 1,976 | $877.45 | $1.7M | +68.7% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 1,966 | $879.54 | $1.7M | +68.3% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 1,854 | $878.55 | $1.6M | +68.4% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 1,842 | $869.39 | $1.6M | +70.2% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 1,738 | $885.10 | $1.5M | +67.2% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 1,146 | $873.78 | $1.0M | +69.4% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 940 | $876.62 | $824K | +68.8% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 810 | $886.01 | $718K | +67.0% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 731 | $874.50 | $639K | +69.2% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 723 | $868.42 | $628K | +70.4% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 699 | $867.57 | $606K | +70.6% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 574 | $872.80 | $501K | +69.6% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 431 | $875.26 | $377K | +69.1% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 339 | $866.19 | $294K | +70.9% | — |
| Nov 20SEC | Maurice SciammasEvp, Ww Sales & Marketing | Sell | 320 | $870.36 | $279K | +70.0% | — |
Insiders at Monolithic Power Systems
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Michael HsingCEO | — | $355M | Sep 30, 2026 | — |
| Saria TsengGeneral Counsel | — | $151M | Sep 2, 2026 | — |
| Maurice SciammasEvp, Ww Sales & Marketing | — | $101M | Aug 6, 2026 | — |
| Deming XiaoEvp, Global Operations | — | $76.4M | May 8, 2026 | — |
| Theodore BlegenCFO | — | $37.5M | Feb 10, 2026 | — |
| Eugen J ElmigerDirector | — | $19.0M | May 8, 2026 | — |
| Jeff ZhouDirector | — | $3.3M | May 27, 2026 | — |
| Victor K LeeDirector | — | $2.0M | Feb 11, 2026 | — |
| Eileen WynneDirector | — | $530K | May 8, 2026 | — |
| Kuo Wei Herbert ChangDirector | — | $312K | Aug 25, 2026 | — |
| Robert W Dean IICFO | — | $234K | Aug 26, 2026 | — |
| Carintia MartinezDirector | — | — | Feb 5, 2026 | — |
Insider activity at other Information Technology companies
Same sector, ranked by insider buying in the last 90 days.
Common questions about MPWR insiders
Are Monolithic Power Systems insiders buying MPWR stock?
In the past 12 months, 0 insiders reported open-market purchases of MPWR worth $0.
Are Monolithic Power Systems insiders selling MPWR stock?
11 insiders reported sales worth $746M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.