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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| POWI | BALAKRISHNAN BALU | Director | May 28 '26 | Sale | 86.44 | 124,287 | 10,743,130 | 279,516 | May 29 12:00 AM |
| POWI | BALAKRISHNAN BALU | Director | May 26 '26 | Sale | 81.72 | 118,573 | 9,690,190 | 403,803 | May 28 12:00 AM |
| POWI | BALAKRISHNAN BALU | Director | May 21 '26 | Sale | 70.71 | 53,880 | 3,810,033 | 522,376 | May 26 12:00 AM |
| POWI | BALAKRISHNAN BALU | Director | Feb 10 '26 | Sale | 47.20 | 4,995 | 235,752 | 576,256 | Feb 10 12:00 AM |
| POWI | BALAKRISHNAN BALU | Director | Feb 09 '26 | Sale | 46.53 | 6,368 | 296,302 | 581,251 | Feb 10 12:00 AM |
| POWI | BALAKRISHNAN BALU | Director | Feb 03 '26 | Sale | 44.75 | 10,080 | 451,112 | 575,331 | Feb 05 12:00 AM |
| POWI | BALAKRISHNAN BALU | Director | Jan 29 '26 | Sale | 46.59 | 5,581 | 260,036 | 585,206 | Feb 02 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Apr 02 '25 | Sale | 51.19 | 9,544 | 488,526 | 590,580 | Apr 04 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 11 '25 | Sale | 58.36 | 5,241 | 305,890 | 600,124 | Feb 13 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 10 '25 | Sale | 58.26 | 6,012 | 350,268 | 605,365 | Feb 11 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 04 '25 | Sale | 60.64 | 12,507 | 758,425 | 600,002 | Feb 06 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Apr 02 '24 | Sale | 68.61 | 9,799 | 672,286 | 552,161 | Apr 03 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 13 '24 | Sale | 74.06 | 3,835 | 284,020 | 511,660 | Feb 14 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 12 '24 | Sale | 81.02 | 5,232 | 423,897 | 508,461 | Feb 14 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 06 '24 | Sale | 73.39 | 5,746 | 421,700 | 513,693 | Feb 08 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 05 '24 | Sale | 74.44 | 3,504 | 260,833 | 519,439 | Feb 06 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 02 '24 | Sale | 74.60 | 2,792 | 208,284 | 522,943 | Feb 06 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Nov 29 '23 | Sale | 77.60 | 47,422 | 3,680,052 | 525,603 | Dec 01 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | May 26 '23 | Sale | 89.85 | 21,674 | 1,947,509 | 572,885 | May 30 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Apr 04 '23 | Sale | 80.66 | 9,765 | 787,644 | 594,559 | Apr 05 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 14 '23 | Sale | 83.75 | 11,750 | 984,055 | 604,324 | Feb 15 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 08 '23 | Sale | 84.59 | 10,657 | 901,475 | 575,674 | Feb 09 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 07 '23 | Sale | 83.02 | 5,882 | 488,324 | 565,227 | Feb 08 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 03 '23 | Sale | 91.76 | 3,712 | 340,613 | 571,109 | Feb 06 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 02 '23 | Sale | 89.66 | 2,634 | 236,164 | 574,821 | Feb 06 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Apr 04 '22 | Sale | 91.09 | 9,390 | 855,335 | 577,148 | Apr 05 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 14 '22 | Sale | 84.72 | 23,744 | 2,011,496 | 586,538 | Feb 16 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 08 '22 | Sale | 85.27 | 41,912 | 3,573,698 | 610,282 | Feb 09 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 07 '22 | Sale | 83.75 | 4,704 | 393,960 | 630,194 | Feb 09 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 02 '22 | Sale | 80.24 | 2,644 | 212,163 | 570,898 | Feb 04 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Nov 22 '21 | Sale | 109.30 | 7,500 | 819,750 | 539,412 | Nov 23 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Jul 16 '21 | Option Exercise | 21.44 | 94,844 | 2,033,456 | 546,765 | Jul 20 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Apr 05 '21 | Sale | 84.84 | 9,368 | 794,781 | 499,343 | Apr 07 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 17 '21 | Sale | 90.53 | 12,174 | 1,102,112 | 508,711 | Feb 18 12:00 AM |
| POWI | BALAKRISHNAN BALU | President and CEO | Feb 16 '21 | Sale | 92.29 | 11,943 | 1,102,217 | 520,885 | Feb 18 12:00 AM |