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Penbrook Management LLC

Position in KOPN — Kopin Corp

CIK 1381055 NEW YORK, NY

Position in KOPN

as of Mar 31, 2026 · filed Apr 21, 2026
Position Value
$257,793
-$11,248 QoQ
Shares Held
114,575
-0.3% QoQ
Ownership
0.063%
of shares outstanding
% of Portfolio
0.21%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
23 quarters on record
Voting authority Sole 0.ToString("F0")% Shared 0.ToString("F0")% None 100.ToString("F0")%

Common Shares in KOPN Over Time

Shares Held

Position Value (USD)

Position in Electronic Components

Technology · as of Mar 31, 2026

Penbrook Management LLC holds $1,160,623 across 2 Electronic Components names. KOPN ranks #2 (22.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 KOPN
Kopin Corp
This page
114,575 $257,793

All Filings in KOPN

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23 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $257,793 114,575
2025-12-31 $269,041 114,975
2025-09-30 $332,849 136,975
2025-06-30 $117,771 76,975
2025-03-31 $86,792 93,325
2024-12-31 $66,062 48,575
2024-03-31 $567,135 315,075
2023-12-31 $654,827 322,575
2023-09-30 $396,591 325,075
2023-06-30 $698,911 325,075
2023-03-31 $327,436 300,400
2022-12-31 $393,328 317,200
2022-09-30 $333,322 317,450
2022-06-30 $359,464 320,950
2022-03-31 $816,431 322,700
2021-12-31 $1,319,843 322,700
2021-09-30 $1,655,451 322,700
2021-06-30 $2,636,823 322,350
2021-03-31 $3,415,334 325,580
2020-12-31 $1,461,875 601,595
2020-09-30 $905,355 656,055
2020-06-30 $838,072 630,130
2020-03-31 $220,545 630,130