POWER INTEGRATIONS INC

Ticker: POWI CUSIP: 739276103 Class: Common Stock

RIVERBRIDGE PARTNERS LLC's Holding History (CIK: 0001112325)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 357,594 Value ($000) $12,709 Avg Close $37.75 Range $30.67 - $50.10

Q3 2025

Shares 377,112 Value ($000) $15,164 Avg Close $47.82 Range $38.91 - $59.47

Q2 2025

Shares 411,187 Value ($000) $22,985 Avg Close $50.63 Range $40.18 - $58.36

Q1 2025

Shares 472,794 Value ($000) $23,876 Avg Close $58.83 Range $48.83 - $66.96

Q4 2024

Shares 517,351 Value ($000) $31,921 Avg Close $62.30 Range $58.36 - $68.04

Q3 2024

Shares 562,653 Value ($000) $36,077 Avg Close $64.50 Range $55.42 - $77.20

Q2 2024

Shares 582,231 Value ($000) $40,867 Avg Close $69.91 Range $60.46 - $76.87

Q1 2024

Shares 630,303 Value ($000) $45,098 Avg Close $72.52 Range $66.34 - $82.47

Q4 2023

Shares 650,561 Value ($000) $53,418 Avg Close $74.26 Range $64.74 - $87.01

Q3 2023

Shares 658,873 Value ($000) $50,279 Avg Close $82.69 Range $71.82 - $96.17

Q2 2023

Shares 670,560 Value ($000) $63,482 Avg Close $80.51 Range $68.31 - $92.22

Q1 2023

Shares 684,108 Value ($000) $57,903 Avg Close $79.89 Range $68.31 - $88.42

Q4 2022

Shares 711,739 Value ($000) $51 Avg Close $68.50 Range $56.73 - $78.55

Q3 2022

Shares 721,330 Value ($000) $46,396 Avg Close $71.65 Range $61.14 - $82.05

Q2 2022

Shares 760,503 Value ($000) $57,045 Avg Close $77.53 Range $68.33 - $90.01

Q1 2022

Shares 748,301 Value ($000) $69,353 Avg Close $83.11 Range $69.07 - $94.42

Q4 2021

Shares 678,734 Value ($000) $63,048 Avg Close $93.47 Range $80.70 - $105.05

Q3 2021

Shares 653,480 Value ($000) $64,688 Avg Close $92.08 Range $72.50 - $105.27

Q2 2021

Shares 656,197 Value ($000) $53,848 Avg Close $76.63 Range $69.29 - $83.54

Q1 2021

Shares 625,624 Value ($000) $50,976 Avg Close $82.50 Range $71.90 - $93.83

Q4 2020

Shares 676,914 Value ($000) $55,412 Avg Close $64.22 Range $50.77 - $77.70

Q3 2020

Shares 605,644 Value ($000) $33,553 Avg Close $54.41 Range $47.61 - $60.12

Q2 2020

Shares 313,926 Value ($000) $37,084 Avg Close $49.57 Range $37.10 - $57.79

Q1 2020

Shares 323,322 Value ($000) $28,559 Avg Close $45.43 Range $36.34 - $52.44

Q4 2019

Shares 322,613 Value ($000) $31,910 Avg Close $43.28 Range $39.70 - $46.87

Q3 2019

Shares 329,749 Value ($000) $29,819 Avg Close $40.65 Range $35.95 - $47.94

Q2 2019

Shares 336,571 Value ($000) $26,986 Avg Close $34.16 Range $30.41 - $38.00

Q1 2019

Shares 385,580 Value ($000) $26,967 Avg Close $31.72 Range $26.00 - $35.37

Q4 2018

Shares 429,571 Value ($000) $26,195 Avg Close $27.46 Range $22.01 - $30.60

Q3 2018

Shares 447,735 Value ($000) $28,297 Avg Close $33.39 Range $28.42 - $36.17

Q2 2018

Shares 465,576 Value ($000) $34,010 Avg Close $33.57 Range $30.31 - $37.33

Q1 2018

Shares 470,770 Value ($000) $32,177 Avg Close $32.97 Range $27.96 - $36.94

Q4 2017

Shares 463,561 Value ($000) $34,095 Avg Close $35.18 Range $32.26 - $39.91

Q3 2017

Shares 477,216 Value ($000) $34,932 Avg Close $33.61 Range $30.70 - $38.09

Q2 2017

Shares 547,894 Value ($000) $39,941 Avg Close $30.45 Range $28.41 - $34.96

Q1 2017

Shares 580,474 Value ($000) $38,166 Avg Close $30.47 Range $28.17 - $33.28

Q4 2016

Shares 605,033 Value ($000) $41,051 Avg Close $29.96 Range $27.74 - $32.06

Q3 2016

Shares 667,258 Value ($000) $42,057 Avg Close $25.95 Range $21.76 - $28.92

Q2 2016

Shares 671,519 Value ($000) $33,623 Avg Close $22.25 Range $20.39 - $24.96

Q1 2016

Shares 708,315 Value ($000) $35,175 Avg Close $20.90 Range $17.93 - $22.74

Q4 2015

Shares 711,182 Value ($000) $34,585 Avg Close $22.06 Range $18.20 - $23.98

Q3 2015

Shares 746,613 Value ($000) $31,485 Avg Close $18.09 Range $16.26 - $20.65

Q2 2015

Shares 785,530 Value ($000) $35,490 Avg Close $22.52 Range $19.63 - $24.33

Q1 2015

Shares 1,080,108 Value ($000) $56,252 Avg Close $24.21 Range $22.14 - $26.42

Q4 2014

Shares 1,082,659 Value ($000) $56,017 Avg Close $22.81 Range $19.04 - $25.19

Q3 2014

Shares 1,142,361 Value ($000) $61,585 Avg Close $25.20 Range $22.98 - $28.86

Q2 2014

Shares 1,266,847 Value ($000) $72,894 Avg Close $24.97 Range $16.99 - $30.03

Q1 2014

Shares 1,211,245 Value ($000) $79,676 Avg Close $27.03 Range $24.11 - $30.73

Q4 2013

Shares 1,197,861 Value ($000) $66,865 Avg Close $24.04 Range $22.49 - $26.82

Q3 2013

Shares 1,043,530 Value ($000) $56,518 Avg Close $23.02 Range $17.96 - $25.46

Q2 2013

Shares 1,024,034 Value ($000) $41,535 Avg Close $18.48 Range $16.68 - $20.17

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	357,594	$12,709	$37.75	$30.67 - $50.10
Q3 2025	377,112	$15,164	$47.82	$38.91 - $59.47
Q2 2025	411,187	$22,985	$50.63	$40.18 - $58.36
Q1 2025	472,794	$23,876	$58.83	$48.83 - $66.96
Q4 2024	517,351	$31,921	$62.30	$58.36 - $68.04
Q3 2024	562,653	$36,077	$64.50	$55.42 - $77.20
Q2 2024	582,231	$40,867	$69.91	$60.46 - $76.87
Q1 2024	630,303	$45,098	$72.52	$66.34 - $82.47
Q4 2023	650,561	$53,418	$74.26	$64.74 - $87.01
Q3 2023	658,873	$50,279	$82.69	$71.82 - $96.17
Q2 2023	670,560	$63,482	$80.51	$68.31 - $92.22
Q1 2023	684,108	$57,903	$79.89	$68.31 - $88.42
Q4 2022	711,739	$51	$68.50	$56.73 - $78.55
Q3 2022	721,330	$46,396	$71.65	$61.14 - $82.05
Q2 2022	760,503	$57,045	$77.53	$68.33 - $90.01
Q1 2022	748,301	$69,353	$83.11	$69.07 - $94.42
Q4 2021	678,734	$63,048	$93.47	$80.70 - $105.05
Q3 2021	653,480	$64,688	$92.08	$72.50 - $105.27
Q2 2021	656,197	$53,848	$76.63	$69.29 - $83.54
Q1 2021	625,624	$50,976	$82.50	$71.90 - $93.83
Q4 2020	676,914	$55,412	$64.22	$50.77 - $77.70
Q3 2020	605,644	$33,553	$54.41	$47.61 - $60.12
Q2 2020	313,926	$37,084	$49.57	$37.10 - $57.79
Q1 2020	323,322	$28,559	$45.43	$36.34 - $52.44
Q4 2019	322,613	$31,910	$43.28	$39.70 - $46.87
Q3 2019	329,749	$29,819	$40.65	$35.95 - $47.94
Q2 2019	336,571	$26,986	$34.16	$30.41 - $38.00
Q1 2019	385,580	$26,967	$31.72	$26.00 - $35.37
Q4 2018	429,571	$26,195	$27.46	$22.01 - $30.60
Q3 2018	447,735	$28,297	$33.39	$28.42 - $36.17
Q2 2018	465,576	$34,010	$33.57	$30.31 - $37.33
Q1 2018	470,770	$32,177	$32.97	$27.96 - $36.94
Q4 2017	463,561	$34,095	$35.18	$32.26 - $39.91
Q3 2017	477,216	$34,932	$33.61	$30.70 - $38.09
Q2 2017	547,894	$39,941	$30.45	$28.41 - $34.96
Q1 2017	580,474	$38,166	$30.47	$28.17 - $33.28
Q4 2016	605,033	$41,051	$29.96	$27.74 - $32.06
Q3 2016	667,258	$42,057	$25.95	$21.76 - $28.92
Q2 2016	671,519	$33,623	$22.25	$20.39 - $24.96
Q1 2016	708,315	$35,175	$20.90	$17.93 - $22.74
Q4 2015	711,182	$34,585	$22.06	$18.20 - $23.98
Q3 2015	746,613	$31,485	$18.09	$16.26 - $20.65
Q2 2015	785,530	$35,490	$22.52	$19.63 - $24.33
Q1 2015	1,080,108	$56,252	$24.21	$22.14 - $26.42
Q4 2014	1,082,659	$56,017	$22.81	$19.04 - $25.19
Q3 2014	1,142,361	$61,585	$25.20	$22.98 - $28.86
Q2 2014	1,266,847	$72,894	$24.97	$16.99 - $30.03
Q1 2014	1,211,245	$79,676	$27.03	$24.11 - $30.73
Q4 2013	1,197,861	$66,865	$24.04	$22.49 - $26.82
Q3 2013	1,043,530	$56,518	$23.02	$17.96 - $25.46
Q2 2013	1,024,034	$41,535	$18.48	$16.68 - $20.17