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Penbrook Management LLC

Position in BLFS — Biolife Solutions Inc

CIK 1381055 NEW YORK, NY

Position in BLFS

as of Jun 30, 2026 · filed Jul 23, 2026
Position Value
$1,121,269
+$679,472 QoQ
Shares Held
39,705
+71.5% QoQ
Ownership
0.081%
of shares outstanding
% of Portfolio
0.76%
of 13F equity value
Holder Rank
#4
of 25 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in BLFS Over Time

Shares Held

Position Value (USD)

Position in Medical Instruments & Supplies

Healthcare · as of Jun 30, 2026

Penbrook Management LLC holds $1,121,269 across 1 Medical Instruments & Supplies name. BLFS ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 BLFS
Biolife Solutions Inc
This page
39,705 $1,121,269

All Filings in BLFS

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,121,269 39,705
2026-03-31 $441,797 23,155
2025-12-31 $555,051 22,955
2025-09-30 $590,684 23,155
2025-06-30 $498,758 23,155
2025-03-31 $694,907 30,425
2024-12-31 $795,674 30,650
2024-09-30 $767,476 30,650
2024-06-30 $836,091 39,015
2024-03-31 $746,637 40,250
2023-12-31 $665,437 40,950
2023-09-30 $573,115 41,500
2023-06-30 $917,150 41,500
2023-03-31 $902,625 41,500
2022-12-31 $738,556 40,580
2022-09-30 $924,332 40,630
2022-06-30 $667,230 48,315
2022-03-31 $1,105,018 48,615
2021-12-31 $1,811,881 48,615
2021-09-30 $2,060,772 48,695
2021-06-30 $2,162,963 48,595
2021-03-31 $1,757,700 48,825
2020-12-31 $1,947,629 48,825
2020-09-30 $1,412,995 48,825
2020-06-30 $752,018 45,995
2020-03-31 $436,952 45,995