Power Integrations, Inc.
US ˙ NasdaqGS ˙ US7392761034

Introduction

This page provides a comprehensive analysis of the known insider trading history of David MH Matthews. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. 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. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

See Highest Ranking Insiders
Companies with Reported Insider Positions

The SEC filings indicate David MH Matthews has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:POWI / Power Integrations, Inc. Chief Technical Officer 53,729
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by David MH Matthews. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Purchases POWI / Power Integrations, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in POWI / Power Integrations, 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 Ticker Insider 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 and security combination

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

POWI / Power Integrations, Inc. Insider Trades
Insider Sales POWI / Power Integrations, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in POWI / Power Integrations, 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 sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares		 Reported
Price		 Adjusted
Shares		 Adjusted
Price		 Cost Basis Days to
Min		 Price at
Min		 Max Loss
Avoided ($)		 Max Loss
Avoided (%)
2024-05-28 POWI Matthews David MH 9,500 77.1671 9,500 77.1671 733,087 315 42.1300 -332,852 -45.40
2024-05-20 POWI Matthews David MH 5,000 76.8808 5,000 76.8808 384,404
2024-04-02 POWI Matthews David MH 1,153 69.0412 1,153 69.0412 79,605
2024-02-13 POWI Matthews David MH 554 75.2288 554 75.2288 41,677
2024-02-12 POWI Matthews David MH 851 80.0598 851 80.0598 68,131
2024-02-06 POWI Matthews David MH 1,095 73.9599 1,095 73.9599 80,986
2024-02-05 POWI Matthews David MH 749 75.4200 749 75.4200 56,490
2024-02-02 POWI Matthews David MH 755 75.5800 755 75.5800 57,063
2024-02-02 POWI Matthews David MH 766 74.4894 766 74.4894 57,059
2023-11-22 POWI Matthews David MH 6,994 77.6924 6,994 77.6924 543,381
2023-11-14 POWI Matthews David MH 5,475 76.1388 5,475 76.1388 416,860
2023-08-30 POWI Matthews David MH 6,017 84.2762 6,017 84.2762 507,090
2023-08-22 POWI Matthews David MH 8,647 82.6206 8,647 82.6206 714,420
2023-05-30 POWI Matthews David MH 4,429 88.5526 4,429 88.5526 392,199
2023-05-22 POWI Matthews David MH 6,000 86.6119 6,000 86.6119 519,671
2023-04-04 POWI Matthews David MH 1,550 81.4567 1,550 81.4567 126,258
2023-02-27 POWI Matthews David MH 5,964 82.4717 5,964 82.4717 491,861
2023-02-14 POWI Matthews David MH 1,886 83.9708 1,886 83.9708 158,369
2023-02-08 POWI Matthews David MH 527 84.9606 527 84.9606 44,774
2023-02-08 POWI Matthews David MH 444 84.9606 444 84.9606 37,723
2023-02-07 POWI Matthews David MH 1,120 83.1773 1,120 83.1773 93,159
2023-02-03 POWI Matthews David MH 724 91.0454 724 91.0454 65,917
2023-02-02 POWI Matthews David MH 711 89.8047 711 89.8047 63,851
2022-11-29 POWI Matthews David MH 5,000 76.6433 5,000 76.6433 383,216
2022-11-11 POWI Matthews David MH 5,948 78.2874 5,948 78.2874 465,653
2022-05-31 POWI Matthews David MH 6,168 83.8385 6,168 83.8385 517,116
2022-05-17 POWI Matthews David MH 3,984 85.2917 3,984 85.2917 339,802
2022-04-04 POWI Matthews David MH 1,502 91.2333 1,502 91.2333 137,032
2022-02-28 POWI Matthews David MH 2,500 89.7852 2,500 89.7852 224,463
2022-02-14 POWI Matthews David MH 2,165 84.2843 2,165 84.2843 182,476
2022-02-14 POWI Matthews David MH 2,091 84.2843 2,091 84.2843 176,238
2022-02-08 POWI Matthews David MH 2,247 85.3202 2,247 85.3202 191,714
2022-02-08 POWI Matthews David MH 4,606 85.3202 4,606 85.3202 392,985
2022-02-07 POWI Matthews David MH 1,029 83.4844 1,029 83.4844 85,905
2022-02-02 POWI Matthews David MH 724 79.6572 724 79.6572 57,672
2021-11-16 POWI Matthews David MH 2,500 108.0129 2,500 108.0129 270,032
2021-08-30 POWI Matthews David MH 1,500 110.0824 1,500 110.0824 165,124
2021-08-25 POWI Matthews David MH 2,500 104.4122 2,500 104.4122 261,030
2021-04-05 POWI Matthews David MH 1,510 84.4142 1,510 84.4142 127,465
2021-02-17 POWI Matthews David MH 2,171 89.0267 2,171 89.0267 193,277
2021-02-16 POWI Matthews David MH 2,130 93.9812 2,130 93.9812 200,180
2021-02-08 POWI Matthews David MH 2,839 85.9800 2,839 85.9800 244,097
2021-02-08 POWI Matthews David MH 185 85.9800 185 85.9800 15,906
2021-02-05 POWI Matthews David MH 1,049 85.6454 1,049 85.6454 89,842
2021-02-03 POWI Matthews David MH 1,649 81.6052 1,649 81.6052 134,567
2020-11-19 POWI Matthews David MH 3,764 68.5107 3,764 68.5107 257,874
2020-08-06 POWI Matthews David MH 1,364 120.1302 2,728 60.0651 163,858
2020-05-27 POWI Matthews David MH 2,697 112.5949 5,394 56.2974 303,668
2020-05-19 POWI Matthews David MH 2,125 107.4001 4,250 53.7000 228,225
2020-04-02 POWI Matthews David MH 753 81.4087 1,506 40.7044 61,301
2020-02-14 POWI Matthews David MH 1,136 106.0733 2,272 53.0366 120,499
2020-02-13 POWI Matthews David MH 760 108.5557 1,520 54.2778 82,502
2020-02-10 POWI Matthews David MH 1,400 106.1897 2,800 53.0948 148,666
2020-02-07 POWI Matthews David MH 1,021 103.1588 2,042 51.5794 105,325
2020-02-04 POWI Matthews David MH 383 101.1019 766 50.5510 38,722
2020-01-28 POWI Matthews David MH 1,161 99.5940 2,322 49.7970 115,629
2019-08-29 POWI Matthews David MH 1,141 89.2050 2,282 44.6025 101,783
2019-04-02 POWI Matthews David MH 756 70.8819 1,512 35.4410 53,587
2019-02-28 POWI Matthews David MH 1,309 72.9151 2,618 36.4576 95,446
2019-02-14 POWI Matthews David MH 611 70.5332 1,222 35.2666 43,096
2019-02-14 POWI Matthews David MH 1,825 70.5332 3,650 35.2666 128,723
2019-02-14 POWI Matthews David MH 734 70.5332 1,468 35.2666 51,771
2019-02-04 POWI Matthews David MH 732 66.2217 1,464 33.1108 48,474
2019-01-28 POWI Matthews David MH 657 65.3137 1,314 32.6568 42,911
2019-01-28 POWI Matthews David MH 835 65.3137 1,670 32.6568 54,537
2018-11-05 POWI Matthews David MH 152 57.8106 304 28.9053 8,787
2018-04-02 POWI Matthews David MH 758 67.0849 1,516 33.5424 50,850
2018-02-27 POWI Matthews David MH 1,009 68.0610 2,018 34.0305 68,674
2018-02-15 POWI Matthews David MH 2,472 63.1783 4,944 31.5892 156,177
2018-02-05 POWI Matthews David MH 736 66.2918 1,472 33.1459 48,791
2018-01-30 POWI Matthews David MH 478 76.4045 956 38.2022 36,521
2018-01-29 POWI Matthews David MH 647 77.5962 1,294 38.7981 50,205
2018-01-29 POWI Matthews David MH 805 77.5962 1,610 38.7981 62,465
2017-11-30 POWI Matthews David MH 704 78.3310 1,408 39.1655 55,145
2017-11-06 POWI Matthews David MH 156 81.1587 312 40.5794 12,661
2017-08-30 POWI Matthews David MH 1,000 71.2238 2,000 35.6119 71,224
2017-05-26 POWI Matthews David MH 776 67.0351 1,552 33.5176 52,019
2017-02-02 POWI Matthews David MH 2,012 66.6025 4,024 33.3012 134,004
2017-02-01 POWI Matthews David MH 504 71.1784 1,008 35.5892 35,874
2017-01-27 POWI Matthews David MH 791 71.6887 1,582 35.8444 56,706
2017-01-27 POWI Matthews David MH 734 69.8606 1,468 34.9303 51,278
2017-01-24 POWI Matthews David MH 1,025 69.1277 2,050 34.5638 70,856
2016-11-23 POWI Matthews David MH 500 68.5067 1,000 34.2534 34,253
2016-11-14 POWI Matthews David MH 1,000 64.9250 2,000 32.4625 64,925
2016-11-04 POWI Matthews David MH 114 63.3446 228 31.6723 7,221
2016-05-10 POWI Matthews David MH 474 46.2948 948 23.1474 21,944
2016-02-05 POWI Matthews David MH 221 43.8768 442 21.9384 9,697
2016-02-01 POWI Matthews David MH 519 46.3302 1,038 23.1651 24,045
2016-01-28 POWI Matthews David MH 677 44.5193 1,354 22.2596 30,140
2015-11-04 POWI Matthews David MH 113 51.1600 226 25.5800 5,781
2015-05-29 POWI Matthews David MH 2,000 51.2421 4,000 25.6210 102,484
2015-05-14 POWI Matthews David MH 2,000 50.8980 4,000 25.4490 101,796
2015-05-11 POWI Matthews David MH 470 50.0520 940 25.0260 23,524
2015-05-06 POWI Matthews David MH 276 49.2404 552 24.6202 13,590
2015-01-30 POWI Matthews David MH 504 53.4163 1,008 26.7082 26,922
2015-01-23 POWI Matthews David MH 1,060 52.8698 2,120 26.4349 56,042
2014-11-10 POWI Matthews David MH 1,448 53.0735 2,896 26.5368 76,850
2014-11-10 POWI Matthews David MH 209 53.0735 418 26.5368 11,092
2014-08-27 POWI Matthews David MH 4,000 58.4205 8,000 29.2102 233,682
2014-08-20 POWI Matthews David MH 1,448 59.7600 2,896 29.8800 86,532
2014-02-24 POWI Matthews David MH 2,000 59.9190 4,000 29.9595 119,838
2014-02-20 POWI Matthews David MH 6,000 59.2500 12,000 29.6250 355,500
2014-02-11 POWI Matthews David MH 2,689 59.3400 5,378 29.6700 159,565
2014-02-04 POWI Matthews David MH 1,627 59.6200 3,254 29.8100 97,002
2014-01-23 POWI Matthews David MH 1,052 60.8997 2,104 30.4498 64,066
2013-11-27 POWI Matthews David MH 2,327 53.2450 4,654 26.6225 123,901
2013-08-26 POWI Matthews David MH 5,000 53.9679 10,000 26.9840 269,840
2013-08-26 POWI Matthews David MH 1,197 54.0958 2,394 27.0479 64,753

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

POWI / Power Integrations, Inc. Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by David MH Matthews as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change		 Share
Price		 Tran
Value		 Remaining
Value
2024-05-28 2024-05-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -9,500 53,729 -15.02 77.17 -733,087 4,146,111
2024-05-21 2024-05-20 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -5,000 63,229 -7.33 76.88 -384,404 4,861,096
2024-04-03 2024-04-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,153 68,229 -1.66 69.04 -79,605 4,710,612
2024-04-03 2024-04-01 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 9,600 69,382 16.06
2024-02-27 2024-02-02 4/A POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -766 61,566 -1.23 74.49 -57,059 4,586,014
2024-02-14 2024-02-13 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -554 59,793 -0.92 75.23 -41,677 4,498,156
2024-02-14 2024-02-12 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 1,465 60,347 2.49
2024-02-14 2024-02-12 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -851 58,882 -1.42 80.06 -68,131 4,714,081
2024-02-08 2024-02-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,095 59,733 -1.80 73.96 -80,986 4,417,847
2024-02-06 2024-02-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -749 60,828 -1.22 75.42 -56,490 4,587,648
2024-02-06 2024-02-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -755 61,577 -1.21 75.58 -57,063 4,653,990
2023-11-27 2023-11-22 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -6,994 62,200 -10.11 77.69 -543,381 4,832,467
2023-11-16 2023-11-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -5,475 69,194 -7.33 76.14 -416,860 5,268,348
2023-08-30 2023-08-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -6,017 74,669 -7.46 84.28 -507,090 6,292,820
2023-08-23 2023-08-22 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -8,647 80,686 -9.68 82.62 -714,420 6,666,326
2023-05-30 2023-05-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -4,429 89,193 -4.73 88.55 -392,199 7,898,272
2023-05-23 2023-05-22 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -6,000 93,622 -6.02 86.61 -519,671 8,108,779
2023-04-05 2023-04-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,550 99,622 -1.53 81.46 -126,258 8,114,879
2023-03-01 2023-02-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -5,964 101,172 -5.57 82.47 -491,861 8,343,827
2023-02-15 2023-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,886 107,136 -1.73 83.97 -158,369 8,996,296
2023-02-13 2023-02-09 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 8,400 109,022 8.35
2023-02-09 2023-02-08 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -444 100,622 -0.44 84.96 -37,723 8,548,905
2023-02-09 2023-02-08 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -527 101,066 -0.52 84.96 -44,774 8,586,628
2023-02-09 2023-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 1,264 101,593 1.26
2023-02-09 2023-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 1,500 100,329 1.52
2023-02-08 2023-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,120 98,829 -1.12 83.18 -93,159 8,220,329
2023-02-06 2023-02-03 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -724 99,949 -0.72 91.05 -65,917 9,099,897
2023-02-06 2023-02-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -711 100,673 -0.70 89.80 -63,851 9,040,909
2022-12-01 2022-11-29 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -5,000 101,233 -4.71 76.64 -383,216 7,758,831
2022-11-15 2022-11-11 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -5,948 106,233 -5.30 78.29 -465,653 8,316,705
2022-06-02 2022-05-31 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -6,168 112,025 -5.22 83.84 -517,116 9,392,008
2022-05-19 2022-05-17 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -3,984 118,193 -3.26 85.29 -339,802 10,080,882
2022-04-05 2022-04-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,502 122,177 -1.21 91.23 -137,032 11,146,611
2022-02-28 2022-02-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,500 123,679 -1.98 89.79 -224,463 11,104,544
2022-02-28 2022-02-24 4 POWI POWER INTEGRATIONS INC
Non-Qualified Stock Option (right to buy) 		M - Exercise -1,008 0 -100.00
2022-02-28 2022-02-24 4 POWI POWER INTEGRATIONS INC
Incentive Stock Option (right to buy) 		M - Exercise -10,992 0 -100.00
2022-02-28 2022-02-24 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 1,008 126,179 0.81 21.44 21,612 2,705,278
2022-02-28 2022-02-24 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 10,992 125,171 9.63 21.44 235,668 2,683,666
2022-02-16 2022-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,091 114,179 -1.80 84.28 -176,238 9,623,497
2022-02-16 2022-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,165 116,270 -1.83 84.28 -182,476 9,799,736
2022-02-09 2022-02-08 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -4,606 118,435 -3.74 85.32 -392,985 10,104,898
2022-02-09 2022-02-08 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,247 123,041 -1.79 85.32 -191,714 10,497,883
2022-02-09 2022-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 11,600 125,288 10.20
2022-02-09 2022-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 4,600 113,688 4.22
2022-02-09 2022-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,029 109,088 -0.93 83.48 -85,905 9,107,146
2022-02-04 2022-02-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 8,400 110,117 8.26
2022-02-04 2022-02-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -724 101,717 -0.71 79.66 -57,672 8,102,491
2021-11-18 2021-11-16 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,500 102,311 -2.39 108.01 -270,032 11,050,908
2021-09-01 2021-08-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,500 104,811 -1.41 110.08 -165,124 11,537,846
2021-08-27 2021-08-25 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,500 106,311 -2.30 104.41 -261,030 11,100,165
2021-04-07 2021-04-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,510 108,663 -1.37 84.41 -127,465 9,172,700
2021-02-18 2021-02-17 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,171 110,173 -1.93 89.03 -193,277 9,808,339
2021-02-18 2021-02-16 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,130 112,344 -1.86 93.98 -200,180 10,558,224
2021-02-09 2021-02-08 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -185 114,474 -0.16 85.98 -15,906 9,842,475
2021-02-09 2021-02-08 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,839 114,659 -2.42 85.98 -244,097 9,858,381
2021-02-09 2021-02-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 369 117,498 0.32
2021-02-09 2021-02-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 6,800 117,129 6.16
2021-02-09 2021-02-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,049 110,329 -0.94 85.65 -89,842 9,449,171
2021-02-05 2021-02-03 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,649 111,378 -1.46 81.61 -134,567 9,089,024
2021-02-03 2021-02-01 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 7,500 113,027 7.11
2020-11-19 2020-11-19 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -3,764 105,322 -3.45 68.51 -257,874 7,215,684
2020-08-10 2020-08-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,364 54,543 -2.44 120.13 -163,858 6,552,261
2020-05-29 2020-05-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,697 55,779 -4.61 112.59 -303,668 6,280,431
2020-05-21 2020-05-19 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,125 58,476 -3.51 107.40 -228,225 6,280,328
2020-04-06 2020-04-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -753 60,601 -1.23 81.41 -61,301 4,933,449
2020-02-18 2020-02-13 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -760 62,490 -1.20 108.56 -82,502 6,783,646
2020-02-18 2020-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,136 61,354 -1.82 106.07 -120,499 6,508,021
2020-02-13 2020-02-10 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,400 63,250 -2.17 106.19 -148,666 6,716,499
2020-02-10 2020-02-07 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,021 64,650 -1.55 103.16 -105,325 6,669,216
2020-02-10 2020-02-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 2,879 65,671 4.58
2020-02-10 2020-02-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 6,000 62,792 10.56
2020-02-06 2020-02-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -383 56,792 -0.67 101.10 -38,722 5,741,779
2020-01-30 2020-01-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,161 57,037 -1.99 99.59 -115,629 5,680,543
2019-08-30 2019-08-29 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,141 58,198 -1.92 89.20 -101,783 5,191,553
2019-04-02 2019-04-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -756 59,151 -1.26 70.88 -53,587 4,192,735
2019-03-01 2019-02-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,309 59,907 -2.14 72.92 -95,446 4,368,125
2019-02-14 2019-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -734 61,216 -1.18 70.53 -51,771 4,317,760
2019-02-14 2019-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,825 61,950 -2.86 70.53 -128,723 4,369,532
2019-02-14 2019-02-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -611 63,775 -0.95 70.53 -43,096 4,498,255
2019-02-14 2019-02-13 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 5,224 64,386 8.83
2019-02-14 2019-02-13 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 1,320 59,162 2.28
2019-02-14 2019-02-12 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 8,700 57,842 17.70
2019-02-06 2019-02-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -732 49,142 -1.47 66.22 -48,474 3,254,267
2019-01-30 2019-01-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -835 49,698 -1.65 65.31 -54,537 3,245,960
2019-01-30 2019-01-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -657 50,533 -1.28 65.31 -42,911 3,300,497
2018-11-07 2018-11-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -152 51,025 -0.30 57.81 -8,787 2,949,786
2018-04-04 2018-04-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -758 51,177 -1.46 67.08 -50,850 3,433,204
2018-02-28 2018-02-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,009 51,935 -1.91 68.06 -68,674 3,534,748
2018-02-20 2018-02-15 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,472 52,944 -4.46 63.18 -156,177 3,344,912
2018-02-15 2018-02-13 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 8,400 55,416 17.87
2018-02-07 2018-02-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -736 46,842 -1.55 66.29 -48,791 3,105,240
2018-02-02 2018-02-01 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 6,854 47,578 16.83
2018-01-31 2018-01-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -478 40,724 -1.16 76.40 -36,521 3,111,497
2018-01-30 2018-01-29 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -805 41,202 -1.92 77.60 -62,465 3,197,119
2018-01-30 2018-01-29 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -647 42,007 -1.52 77.60 -50,205 3,259,584
2017-12-01 2017-11-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -704 42,654 -1.62 78.33 -55,145 3,341,130
2017-11-07 2017-11-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -156 43,358 -0.36 81.16 -12,661 3,518,879
2017-08-30 2017-08-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,000 43,405 -2.25 71.22 -71,224 3,091,469
2017-05-30 2017-05-26 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -776 44,405 -1.72 67.04 -52,019 2,976,694
2017-05-05 2017-05-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 12,000 45,181 36.17
2017-02-06 2017-02-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 8,400 33,181 33.90
2017-02-06 2017-02-02 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,012 24,781 -7.51 66.60 -134,004 1,650,477
2017-02-02 2017-02-01 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 4,912 26,793 22.45
2017-02-02 2017-02-01 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -504 21,881 -2.25 71.18 -35,874 1,557,455
2017-01-31 2017-01-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -734 22,086 -3.22 69.86 -51,278 1,542,941
2017-01-30 2017-01-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -791 22,820 -3.35 71.69 -56,706 1,635,936
2017-01-26 2017-01-24 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,025 23,611 -4.16 69.13 -70,856 1,632,174
2016-11-28 2016-11-23 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -500 24,636 -1.99 68.51 -34,253 1,687,731
2016-11-16 2016-11-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,000 25,136 -3.83 64.92 -64,925 1,631,955
2016-11-07 2016-11-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -114 26,136 -0.43 63.34 -7,221 1,655,574
2016-05-12 2016-05-10 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -474 26,065 -1.79 46.29 -21,944 1,206,674
2016-02-05 2016-02-05 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -221 26,539 -0.83 43.88 -9,697 1,164,446
2016-02-05 2016-02-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 576 26,760 2.20
2016-02-02 2016-02-01 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -519 26,184 -1.94 46.33 -24,045 1,213,110
2016-01-28 2016-01-28 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -677 26,276 -2.51 44.52 -30,140 1,169,789
2016-01-28 2016-01-26 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 8,400 26,953 45.28
2016-01-26 2016-01-25 4 POWI POWER INTEGRATIONS INC
Common Stock 		D - Sale to Issuer -1,082 18,553 -5.51 44.07 -47,684 817,631
2015-11-04 2015-11-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -113 19,635 -0.57 51.16 -5,781 1,004,527
2015-06-02 2015-05-29 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,000 19,418 -9.34 51.24 -102,484 995,019
2015-05-15 2015-05-14 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,000 21,418 -8.54 50.90 -101,796 1,090,133
2015-05-13 2015-05-11 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -470 23,418 -1.97 50.05 -23,524 1,172,118
2015-05-07 2015-05-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -276 23,888 -1.14 49.24 -13,590 1,176,255
2015-02-03 2015-01-30 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -504 23,858 -2.07 53.42 -26,922 1,274,406
2015-01-29 2015-01-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 7,500 24,362 44.48
2015-01-27 2015-01-23 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,060 16,862 -5.91 52.87 -56,042 891,491
2014-11-12 2014-11-10 4 POWI POWER INTEGRATIONS INC
Non-Qualified Stock Option (right to buy) 		M - Exercise -209 0 -100.00
2014-11-12 2014-11-10 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -209 17,922 -1.15 53.07 -11,092 951,183
2014-11-12 2014-11-10 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 209 18,131 1.17 21.14 4,418 383,289
2014-11-12 2014-11-10 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,448 17,922 -7.48 53.07 -76,850 951,183
2014-11-05 2014-11-03 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 1,200 19,370 6.60
2014-08-28 2014-08-27 4 POWI POWER INTEGRATIONS INC
Incentive Stock Option (right to buy) 		M - Exercise -4,000 5,496 -42.12
2014-08-28 2014-08-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -4,000 18,170 -18.04 58.42 -233,682 1,061,500
2014-08-28 2014-08-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 4,000 22,170 22.01 42.88 171,520 950,650
2014-08-21 2014-08-20 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,448 18,170 -7.38 59.76 -86,532 1,085,839
2014-05-13 2014-05-09 4 POWI POWER INTEGRATIONS INC
Common Stock 		D - Sale to Issuer -474 19,341 -2.39 49.08 -23,263 949,202
2014-05-07 2014-05-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		D - Sale to Issuer -290 19,815 -1.44 48.35 -14,021 958,010
2014-05-07 2014-05-06 4 POWI POWER INTEGRATIONS INC
Common Stock 		D - Sale to Issuer -283 20,105 -1.39 48.35 -13,682 972,031
2014-02-25 2014-02-20 4 POWI POWER INTEGRATIONS INC
Non-Qualified Stock Option (right to buy) 		M - Exercise -6,000 0 -100.00
2014-02-25 2014-02-20 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -6,000 20,388 -22.74 59.25 -355,500 1,207,989
2014-02-25 2014-02-20 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 6,000 26,388 29.43 17.18 103,080 453,346
2014-02-25 2014-02-24 4 POWI POWER INTEGRATIONS INC
Non-Qualified Stock Option (right to buy) 		M - Exercise -2,000 0 -100.00
2014-02-25 2014-02-24 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,000 20,388 -8.93 59.92 -119,838 1,221,629
2014-02-25 2014-02-24 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 2,000 22,388 9.81 26.75 53,500 598,879
2014-02-12 2014-02-11 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,689 20,388 -11.65 59.34 -159,565 1,209,824
2014-02-05 2014-02-04 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,627 23,077 -6.59 59.62 -97,002 1,375,851
2014-02-05 2014-02-03 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 4,316 24,704 21.17
2014-01-31 2014-01-29 4 POWI POWER INTEGRATIONS INC
Common Stock 		A - Award 5,400 20,388 36.03
2014-01-24 2014-01-23 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,052 14,988 -6.56 60.90 -64,066 912,765
2013-11-27 2013-11-27 4 POWI POWER INTEGRATIONS INC
Non-Qualified Stock Option (right to buy) 		M - Exercise -2,327 0 -100.00
2013-11-27 2013-11-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -2,327 16,040 -12.67 53.24 -123,901 854,050
2013-11-27 2013-11-27 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 2,327 18,367 14.51 27.22 63,341 499,950
2013-08-28 2013-08-26 4 POWI POWER INTEGRATIONS INC
Non-Qualified Stock Option (right to buy) 		M - Exercise -5,000 2,327 -68.24
2013-08-28 2013-08-26 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -1,197 16,040 -6.94 54.10 -64,753 867,697
2013-08-28 2013-08-26 4 POWI POWER INTEGRATIONS INC
Common Stock 		S - Sale -5,000 17,237 -22.49 53.97 -269,840 930,245
2013-08-28 2013-08-26 4 POWI POWER INTEGRATIONS INC
Common Stock 		M - Exercise 5,000 22,237 29.01 27.22 136,100 605,291
2013-08-01 3 POWI POWER INTEGRATIONS INC
Common Stock 		17,237
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)