Over the past 12 months, 11 insiders at MONOLITHIC POWER SYSTEMS, INC. filed 255 open-market SEC Form 4 transactions on MPWR: 0 purchases worth $0 and 255 sales worth $572.5M. Insiders have been net sellers over this period. The most recent filing was on Jul 15, 26.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Jul 15, 26 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 5.6K | $1405.71 | $7.6M |
| Jul 1, 26 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 30 | $1351.61 | $41K |
| May 26, 26 | Robert W Dean IIInterim CFO | SELL | 22 | $1649.56 | $36K |
| May 18, 26 | Robert W Dean IIInterim CFO | SELL | 4 | $1563.28 | $6K |
| May 6, 26 | Eugen J Elmiger | SELL | 2.6K | $1600.14 | $4.2M |
| Mar 20, 26 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 30 | $1095.07 | $33K |
| Feb 12, 26 | Michael HsingCEO | SELL | 12.7K | $1210.11 | $14.7M |
| Feb 11, 26 | Michael HsingCEO | SELL | 14.6K | $1202.28 | $17.5M |
| Feb 11, 26 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 200 | $1179.98 | $236K |
| Feb 10, 26 | Michael HsingCEO | SELL | 16.1K | $1197.26 | $18.4M |
| Feb 9, 26 | Victor K LeeDirector | SELL | 400 | $1212.16 | $485K |
| Feb 6, 26 | Theodore BlegenEVP and CFO | SELL | 21.7K | $1171.16 | $25.4M |
| Feb 6, 26 | Michael HsingCEO | SELL | 54.9K | $1171.16 | $64.3M |
| Feb 6, 26 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 22.9K | $1171.16 | $26.8M |
| Feb 6, 26 | Saria TsengEVP & General Counsel | SELL | 22.9K | $1171.16 | $26.8M |
| Feb 6, 26 | Deming XiaoEVP, Global Operations | SELL | 22.9K | $1171.16 | $26.8M |
| Feb 2, 26 | Theodore BlegenEVP and CFO | SELL | 379 | $1139.49 | $430K |
| Jan 2, 26 | Theodore BlegenEVP and CFO | SELL | 650 | $946.62 | $614K |
| Jan 2, 26 | Victor K LeeDirector | SELL | 600 | $930.86 | $559K |
| Dec 24, 25 | Victor K LeeDirector | SELL | 280 | $955.08 | $266K |
| Dec 1, 25 | Theodore BlegenEVP and CFO | SELL | 2.0K | $911.59 | $1.8M |
| Nov 26, 25 | Saria TsengEVP & General Counsel | SELL | 10.4K | $930.48 | $9.6M |
| Nov 25, 25 | Chang Kuo Wei HerbertDirector | SELL | 100 | $896.97 | $90K |
| Nov 25, 25 | Saria TsengEVP & General Counsel | SELL | 10.2K | $912.30 | $9.3M |
| Nov 24, 25 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 4.0K | $895.23 | $3.6M |
| Nov 21, 25 | Chang Kuo Wei HerbertDirector | SELL | 100 | $873.97 | $87K |
| Nov 19, 25 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 6.5K | $886.01 | $5.8M |
| Nov 12, 25 | Michael HsingCEO | SELL | 6.6K | $980.06 | $6.3M |
| Nov 11, 25 | Michael HsingCEO | SELL | 7.9K | $967.15 | $7.6M |
| Nov 5, 25 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 200 | $986.81 | $197K |
| Nov 3, 25 | Theodore BlegenEVP and CFO | SELL | 291 | $1038.41 | $298K |
| Oct 24, 25 | Saria TsengEVP & General Counsel | SELL | 1.3K | $1087.62 | $1.4M |
| Oct 16, 25 | Saria TsengEVP & General Counsel | SELL | 1.5K | $1030.81 | $1.5M |
| Oct 15, 25 | Saria TsengEVP & General Counsel | SELL | 14.0K | $1016.18 | $14.3M |
| Oct 1, 25 | Theodore BlegenEVP and CFO | SELL | 676 | $917.17 | $617K |
| Sep 18, 25 | Carintia MartinezDirector | SELL | 1.4K | $900.00 | $1.3M |
| Sep 18, 25 | Saria TsengEVP & General Counsel | SELL | 14.5K | $914.45 | $13.3M |
| Sep 2, 25 | Theodore BlegenEVP and CFO | SELL | 574 | $822.59 | $469K |
| Aug 29, 25 | Eugen J ElmigerDirector | SELL | 900 | $849.41 | $763K |
| Aug 27, 25 | Jeff ZhouDirector | SELL | 193 | $870.00 | $168K |
| Aug 15, 25 | Michael HsingCEO | SELL | 4.1K | $836.40 | $3.4M |
| Aug 13, 25 | Jeff ZhouDirector | SELL | 400 | $850.00 | $340K |
| Aug 12, 25 | Jeff ZhouDirector | SELL | 200 | $830.00 | $166K |
| Aug 1, 25 | Theodore BlegenEVP and CFO | SELL | 3.0K | $750.00 | $2.3M |
| Aug 1, 25 | Deming XiaoEVP, Global Operations | SELL | 40.0K | $780.00 | $31.2M |
| Jul 1, 25 | Theodore BlegenEVP and CFO | SELL | 6.0K | $750.00 | $4.5M |
| May 13, 25 | Chang Kuo Wei HerbertDirector | SELL | 50 | $738.00 | $37K |
| May 12, 25 | Chang Kuo Wei HerbertDirector | SELL | 100 | $698.00 | $70K |
| May 12, 25 | Maurice SciammasEVP, WW Sales & Marketing | SELL | 12.0K | $701.00 | $8.4M |
| May 8, 25 | Chang Kuo Wei HerbertDirector | SELL | 100 | $650.00 | $65K |
Over the past 12 months, insiders at MONOLITHIC POWER SYSTEMS, INC. filed 0 open-market purchases worth $0 and 255 sales worth $572.5M on MPWR, which makes them net sellers over the period. The most recent Form 4 was filed on Jul 15, 26.
11 different insiders at MONOLITHIC POWER SYSTEMS, INC. filed open-market SEC Form 4 transactions on MPWR over the last 12 months.
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