Monolithic Power Systems, Inc.
US ˙ NasdaqGS ˙ US6098391054

SecurityMPWR / Monolithic Power Systems, Inc.
InsiderJeff Zhou
This page shows the track record and history of Zhou Jeff insider trades in Monolithic Power Systems, Inc.. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by Jeff Zhou in MPWR / Monolithic Power Systems, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Max		 Price at
Max		 Max
Profit ($)		 Max Return (%)
There are no known unplanned open-market trades for this insider

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

MPWR / Monolithic Power Systems, Inc. Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by Jeff Zhou in MPWR / Monolithic Power Systems, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
2025-08-27 193 870.0000 193 870.0000 167,910 6 823.6500 -8,946 -5.33
2025-08-13 400 850.0000 400 850.0000 340,000
2025-08-12 200 830.0000 200 830.0000 166,000
2024-05-20 200 750.0000 200 750.0000 150,000
2024-02-12 200 750.5700 200 750.5700 150,114
2021-08-24 300 490.0000 300 490.0000 147,000
2021-08-20 300 477.0000 300 477.0000 143,100
2021-08-04 400 465.2200 400 465.2200 186,088
2021-02-12 200 388.0000 200 388.0000 77,600
2020-08-28 200 266.3500 200 266.3500 53,270
2020-08-28 193 268.0000 193 268.0000 51,724
2020-08-07 200 283.0000 200 283.0000 56,600
2020-08-06 200 279.0000 200 279.0000 55,800
2020-08-05 200 276.0000 200 276.0000 55,200
2020-08-04 47 273.0000 47 273.0000 12,831
2020-08-03 153 273.0000 153 273.0000 41,769
2020-07-31 300 271.6200 300 271.6200 81,486
2020-05-12 1,000 216.0000 1,000 216.0000 216,000
2020-05-12 1,000 218.0000 1,000 218.0000 218,000
2020-05-07 590 205.0000 590 205.0000 120,950
2020-05-05 500 198.0000 500 198.0000 99,000
2020-02-13 500 191.0000 500 191.0000 95,500
2020-02-11 500 185.0000 500 185.0000 92,500
2020-02-11 533 187.0000 533 187.0000 99,671
2020-02-10 1,500 182.2433 1,500 182.2433 273,365
2015-11-20 702 66.6000 702 66.6000 46,753
2015-11-20 298 66.8000 298 66.8000 19,906
2015-11-19 1,500 66.0140 1,500 66.0140 99,021
2014-02-12 8,000 34.7000 8,000 34.7000 277,600
2014-02-11 8,000 34.2577 8,000 34.2577 274,062
2013-10-31 5,000 31.7000 5,000 31.7000 158,500
2013-02-12 1,500 24.9980 1,500 24.9980 37,497
2012-02-14 1,700 17.4100 1,700 17.4100 29,597
2012-02-14 300 17.4010 300 17.4010 5,220

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

MPWR / Monolithic Power Systems, Inc. Insider Trades
Insider Transaction History
File
Date		 Trade
Date		 Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price		 Unit
Price		 Units
Changed		 Value
Changed (1K)		 Remaining
Options		 Remaining
Shares
2025-08-28 2025-08-27 4 Zhou Jeff MPWR Common Stock S - Sale D 870.0000 -193 -168 5,611
2025-08-15 2025-08-13 4 Zhou Jeff MPWR Common Stock S - Sale D 850.0000 -400 -340 5,804
2025-08-13 2025-08-12 4 Zhou Jeff MPWR Common Stock S - Sale D 830.0000 -200 -166 6,204
2025-02-06 2025-02-04 4 Zhou Jeff MPWR Common Stock A - Award D 335 6,404
2024-05-22 2024-05-20 4 Zhou Jeff MPWR Common Stock S - Sale D 750.0000 -200 -150 6,069
2024-02-13 2024-02-12 4 Zhou Jeff MPWR Common Stock S - Sale D 750.5700 -200 -150 6,269
2024-02-08 2024-02-06 4 Zhou Jeff MPWR Common Stock A - Award D 348 6,469
2023-02-08 2023-02-07 4 Zhou Jeff MPWR Common Stock A - Award D 470 6,121
2022-08-12 2022-08-11 4 Zhou Jeff MPWR common stock S - Sale D 540.0000 -200 -108 5,651
2022-08-03 2022-08-03 4 Zhou Jeff MPWR common stock S - Sale D 520.0000 -200 -104 5,851
2022-02-09 2022-02-08 4 Zhou Jeff MPWR Common Stock A - Award D 542 6,051
2021-08-26 2021-08-24 4 Zhou Jeff MPWR Common Stock S - Sale D 490.0000 -300 -147 5,509
2021-08-23 2021-08-20 4 Zhou Jeff MPWR Common Stock S - Sale D 477.0000 -300 -143 5,809
2021-08-05 2021-08-04 4 Zhou Jeff MPWR Common Stock S - Sale D 465.2200 -400 -186 6,109
2021-07-26 2021-07-23 4 Zhou Jeff MPWR Common Stock S - Sale D 410.0000 -500 -205 6,509
2021-07-21 2021-07-21 4 Zhou Jeff MPWR Common Stock S - Sale D 405.0200 -500 -203 7,009
2021-07-21 2021-07-21 4 Zhou Jeff MPWR Common Stock S - Sale D 400.0000 -500 -200 7,509
2021-07-16 2021-07-14 4 Zhou Jeff MPWR Common Stock S - Sale D 395.0000 -500 -198 8,009
2021-07-16 2021-07-14 4 Zhou Jeff MPWR Common Stock S - Sale D 390.3200 -500 -195 8,509
2021-07-08 2021-07-07 4 Zhou Jeff MPWR Common Stock S - Sale D 387.2700 -500 -194 9,009
2021-07-06 2021-07-06 4 Zhou Jeff MPWR Common Stock S - Sale D 380.0000 -500 -190 9,509
2021-06-28 2021-06-28 4 Zhou Jeff MPWR Common Stock S - Sale D 375.0000 -250 -94 10,009
2021-06-28 2021-06-28 4 Zhou Jeff MPWR Common Stock S - Sale D 370.0000 -250 -92 10,259
2021-06-28 2021-06-28 4 Zhou Jeff MPWR Common Stock S - Sale D 367.6500 -1,000 -368 10,509
2021-02-16 2021-02-12 4 Zhou Jeff MPWR Common Stock S - Sale D 388.0000 -200 -78 11,509
2021-02-04 2021-02-02 4 Zhou Jeff MPWR Common Stock A - Award D 533 11,709
2020-09-01 2020-08-28 4 Zhou Jeff MPWR Common Stock S - Sale D 268.0000 -193 -52 11,176
2020-09-01 2020-08-28 4 Zhou Jeff MPWR Common Stock S - Sale D 266.3500 -200 -53 11,369
2020-08-07 2020-08-07 4 Zhou Jeff MPWR Common Stock S - Sale D 283.0000 -200 -57 11,569
2020-08-07 2020-08-06 4 Zhou Jeff MPWR Common Stock S - Sale D 279.0000 -200 -56 11,769
2020-08-07 2020-08-05 4 Zhou Jeff MPWR Common Stock S - Sale D 276.0000 -200 -55 11,969
2020-08-04 2020-08-04 4 Zhou Jeff MPWR Common Stock S - Sale D 273.0000 -47 -13 12,169
2020-08-04 2020-08-03 4 Zhou Jeff MPWR Common Stock S - Sale D 273.0000 -153 -42 12,216
2020-08-04 2020-07-31 4 Zhou Jeff MPWR Common Stock S - Sale D 271.6200 -300 -81 12,369
2020-05-14 2020-05-12 4 Zhou Jeff MPWR Common Stock S - Sale D 218.0000 -1,000 -218 12,669
2020-05-14 2020-05-12 4 Zhou Jeff MPWR Common Stock S - Sale D 216.0000 -1,000 -216 13,669
2020-05-11 2020-05-07 4 Zhou Jeff MPWR Common Stock S - Sale D 205.0000 -590 -121 14,669
2020-05-07 2020-05-05 4 Zhou Jeff MPWR Common Stock S - Sale D 198.0000 -500 -99 15,259
2020-02-14 2020-02-13 4 Zhou Jeff MPWR Common Stock S - Sale D 191.0000 -500 -96 15,759
2020-02-14 2020-02-12 4 Zhou Jeff MPWR Common Stock A - Award D 1,048 16,259
2020-02-12 2020-02-11 4 Zhou Jeff MPWR Common Stock S - Sale D 187.0000 -533 -100 15,211
2020-02-12 2020-02-11 4 Zhou Jeff MPWR Common Stock S - Sale D 185.0000 -500 -92 15,744
2020-02-12 2020-02-10 4 Zhou Jeff MPWR Common Stock S - Sale D 182.2433 -1,500 -273 16,244
2019-08-05 2019-08-01 4 Zhou Jeff MPWR Common Stock S - Sale D 157.0000 -1,747 -274 17,744
2019-07-24 2019-07-24 4 Zhou Jeff MPWR Common Stock S - Sale D 150.0000 -1,000 -150 19,491
2019-07-24 2019-07-22 4 Zhou Jeff MPWR Common Stock S - Sale D 147.0000 -1,000 -147 20,491
2019-02-12 2019-02-11 4 Zhou Jeff MPWR Common Stock A - Award D 1,339 21,491
2018-02-09 2018-02-07 4 Zhou Jeff MPWR Common Stock A - Award D 1,590 20,152
2017-02-08 2017-02-07 4 Zhou Jeff MPWR Common Stock A - Award D 1,566 18,562
2016-04-29 2016-04-28 4 Zhou Jeff MPWR Common Stock A - Award D 2,181 16,996
2015-11-23 2015-11-20 4 Zhou Jeff MPWR Common Stock S - Sale D 66.8000 -298 -20 14,815
2015-11-23 2015-11-20 4 Zhou Jeff MPWR Common Stock S - Sale D 66.6000 -702 -47 15,113
2015-11-23 2015-11-19 4 Zhou Jeff MPWR Common Stock S - Sale D 66.0140 -1,500 -99 15,815
2015-02-10 2015-02-09 4 Zhou Jeff MPWR Common Stock A - Award D 2,533 17,315
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Non-Qualified Stock Option (right to buy) M - Exercise D 20.20 -19,000 0
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Non-Qualified Stock Option (right to buy) M - Exercise D 19.29 -1,882 0
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Common Stock S - Sale D 42.4750 -5,882 -250 14,782
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Common Stock S - Sale D 42.4790 -5,000 -212 20,664
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Common Stock S - Sale D 42.4868 -5,000 -212 25,664
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Common Stock S - Sale D 42.4917 -5,000 -212 30,664
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Common Stock M - Exercise D 19.2900 1,882 36 35,664
2014-07-01 2014-06-30 4 Zhou Jeff MPWR Common Stock M - Exercise D 19.2900 19,000 367 33,782
2014-02-13 2014-02-12 4 Zhou Jeff MPWR Non-Qualified Stock Option (right to buy) M - Exercise D 20.20 -8,000 19,000
2014-02-13 2014-02-12 4 Zhou Jeff MPWR Common Stock S - Sale D 34.7000 -8,000 -278 14,782
2014-02-13 2014-02-12 4 Zhou Jeff MPWR Common Stock M - Exercise D 19.2900 8,000 154 22,782
2014-02-13 2014-02-11 4 Zhou Jeff MPWR Non-Qualified Stock Option (right to buy) M - Exercise D 20.20 -8,000 27,000
2014-02-13 2014-02-11 4 Zhou Jeff MPWR Common Stock A - Award D 3,493 14,782
2014-02-13 2014-02-11 4 Zhou Jeff MPWR Common Stock S - Sale D 34.2577 -8,000 -274 11,289
2014-02-13 2014-02-11 4 Zhou Jeff MPWR Common Stock M - Exercise D 19.2900 8,000 154 19,289
2013-11-04 2013-10-31 4 Zhou Jeff MPWR Non-Qualified Stock Option (right to buy) M - Exercise D 20.20 -5,000 35,000
2013-11-04 2013-10-31 4 Zhou Jeff MPWR Common Stock S - Sale D 31.7000 -5,000 -158 11,289
2013-11-04 2013-10-31 4 Zhou Jeff MPWR Common Stock M - Exercise D 19.2900 5,000 96 16,289
2013-03-04 2013-02-28 4 Zhou Jeff MPWR Non-Qualified Stock Option (right to buy) A - Award D 19.29 19.2900 1,882 36 1,882
2013-02-13 2013-02-12 4 Zhou Jeff MPWR Common Stock S - Sale D 24.9980 -1,500 -37 11,289
2013-02-13 2013-02-11 4 Zhou Jeff MPWR Common Stock A - Award D 4,027 12,789
2013-02-11 2013-02-07 4 Zhou Jeff MPWR Common Stock A - Award D 227 8,762
2012-02-16 2012-02-14 4 Zhou Jeff MPWR Common Stock S - Sale D 17.4010 -300 -5 8,535
2012-02-16 2012-02-14 4 Zhou Jeff MPWR Common Stock S - Sale D 17.4100 -1,700 -30 8,835
2012-02-16 2012-02-14 4 Zhou Jeff MPWR Common Stock A - Award D 4,835 10,535
P
Köp på öppna marknaden eller privat köp av icke-derivatsäkerhet
S
Köp på öppna marknaden eller privat försäljning av icke-derivatsäkerhet
A
Bevilja, tilldelning eller annat förvärv av värdepapper från företaget (såsom en option)
C
Omvandling av derivat
D
Försäljning eller överföring av värdepapper tillbaka til företaget
F
Betalning av lösenpris eller skatteskuld med del av värdepapper som erhållits från bolaget
G
Överlåtelse av värdepapper från eller till insidern
K
Aktieswappar och liknande säkringsaffärer
M
Utövande eller omvandling av derivatsäkerhet som erhållits från företaget (som en option)
V
En transaktion friviligt rapporterad på schema 4
J
Andra (med en fotnot som beskriver transaktionen)