Penbrook Management LLC

Position in POWI — Power Integrations Inc

CIK 1381055 NEW YORK, NY

Position in POWI

as of Jun 30, 2026 · filed Jul 23, 2026 Compact

Position Value

$770,592

+$299,552 QoQ

Shares Held

9,200

0.0% QoQ

Ownership

0.016%

of shares outstanding

% of Portfolio

0.52%

of 13F equity value

Holder Rank

#183

of 372 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 0% Shared 0% None 100%

Technology · as of Jun 30, 2026

Penbrook Management LLC holds $4,734,140 across 3 Semiconductors names. POWI ranks #3 (16.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MRVL	Marvell Technology, Inc.	9,730	$2,898,469
2	NVDA	Nvidia Corp	5,323	$1,065,079
3	POWI	Power Integrations Inc This page	9,200	$770,592

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$770,592	9,200	0.0%	Shares	Sole	2026-07-23
2026-03-31	$471,040	9,200	0.0%	Shares	Sole	2026-04-21
2025-12-31	$326,968	9,200	0.0%	Shares	Sole	2026-01-06
2025-09-30	$369,932	9,200	0.0%	Shares	Sole	2025-10-22
2025-06-30	$514,280	9,200	0.0%	Shares	Sole	2025-07-25
2025-03-31	$464,600	9,200	0.0%	Shares	Sole	2025-04-01
2024-12-31	$567,640	9,200	0.0%	Shares	Sole	2025-01-23
2024-09-30	$589,904	9,200	0.0%	Shares	Sole	2024-10-15
2024-06-30	$645,748	9,200	0.0%	Shares	Sole	2024-07-24
2024-03-31	$658,260	9,200	0.0%	Shares	Sole	2024-04-18
2023-12-31	$755,412	9,200	-8.0%	Shares	Sole	2024-01-16
2023-09-30	$763,100	10,000	0.0%	Shares	Sole	2023-10-10
2023-06-30	$946,700	10,000	0.0%	Shares	Sole	2023-07-17
2023-03-31	$846,400	10,000	0.0%	Shares	Sole	2023-04-20
2022-12-31	$717,200	10,000	-23.1%	Shares	Sole	2023-01-24
2022-09-30	$836,160	13,000	0.0%	Shares	Sole	2022-10-31
2022-06-30	$975,130	13,000	-3.7%	Shares	Sole	2022-07-29
2022-03-31	$1,251,180	13,500	0.0%	Shares	Sole	2022-04-26
2021-12-31	$1,254,015	13,500	-3.6%	Shares	Sole	2022-01-10
2021-09-30	$1,385,860	14,000	0.0%	Shares	Sole	2021-10-26
2021-06-30	$1,148,840	14,000	0.0%	Shares	Sole	2021-07-27
2021-03-31	$1,140,720	14,000	0.0%	Shares	Sole	2021-05-06
2020-12-31	$1,146,040	14,000	0.0%	Shares	Sole	2022-04-25
2020-09-30	$775,600	14,000	+112.1%	Shares	Sole	2020-10-23
2020-06-30	$779,658	6,600	0.0%	Shares	Sole	2020-07-28
2020-03-31	$582,978	6,600	—	Shares	Sole	2020-04-14
No filing history on record for this holder in this stock.