Penbrook Management LLC

Position in PLAB — Photronics Inc

CIK 1381055 NEW YORK, NY

Position in PLAB

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

Position Value

$2,896,959

-$1,011,900 QoQ

Shares Held

89,055

-7.9% QoQ

Ownership

0.151%

of shares outstanding

% of Portfolio

1.96%

of 13F equity value

Holder Rank

#74

of 312 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 $6,700,528 across 5 Semiconductor Equipment & Materials names. PLAB ranks #1 (43.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	PLAB	Photronics Inc This page	89,055	$2,896,959
2	ACLS	Axcelis Technologies Inc	10,895	$2,064,057
3	KLIC	Kulicke & Soffa Industries Inc	7,100	$949,696
4	AEHR	Aehr Test Systems	5,200	$499,512
5	TER	Teradyne, Inc	600	$290,304

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,896,959	89,055	-7.9%	Shares	Sole	2026-07-23
2026-03-31	$3,908,859	96,730	-12.6%	Shares	Sole	2026-04-21
2025-12-31	$3,541,760	110,680	-0.6%	Shares	Sole	2026-01-06
2025-09-30	$2,556,171	111,380	+21.0%	Shares	Sole	2025-10-22
2025-06-30	$1,733,207	92,045	0.0%	Shares	Sole	2025-07-25
2025-03-31	$1,910,854	92,045	-1.1%	Shares	Sole	2025-04-01
2024-12-31	$2,192,140	93,045	+0.4%	Shares	Sole	2025-01-23
2024-09-30	$2,295,128	92,695	-10.3%	Shares	Sole	2024-10-15
2024-06-30	$2,550,754	103,395	-9.7%	Shares	Sole	2024-07-24
2024-03-31	$3,242,498	114,495	-6.0%	Shares	Sole	2024-04-18
2023-12-31	$3,820,866	121,800	-0.2%	Shares	Sole	2024-01-16
2023-09-30	$2,467,641	122,100	-0.2%	Shares	Sole	2023-10-10
2023-06-30	$3,156,696	122,400	-1.6%	Shares	Sole	2023-07-17
2023-03-31	$2,062,552	124,400	-0.4%	Shares	Sole	2023-04-20
2022-12-31	$2,102,067	124,900	-0.6%	Shares	Sole	2023-01-24
2022-09-30	$1,837,734	125,700	-3.1%	Shares	Sole	2022-10-31
2022-06-30	$2,527,530	129,750	-6.6%	Shares	Sole	2022-07-29
2022-03-31	$2,357,133	138,900	-1.2%	Shares	Sole	2022-04-26
2021-12-31	$2,650,310	140,600	-0.2%	Shares	Sole	2022-01-10
2021-09-30	$1,919,785	140,850	-0.6%	Shares	Sole	2021-10-26
2021-06-30	$1,871,196	141,650	+0.8%	Shares	Sole	2021-07-27
2021-03-31	$1,807,473	140,550	-0.4%	Shares	Sole	2021-05-06
2020-12-31	$1,575,234	141,150	+150.3%	Shares	Sole	2022-04-25
2020-09-30	$561,744	56,400	+5.2%	Shares	Sole	2020-10-23
2020-06-30	$596,568	53,600	-0.6%	Shares	Sole	2020-07-28
2020-03-31	$553,014	53,900	—	Shares	Sole	2020-04-14
No filing history on record for this holder in this stock.