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, 2026Penbrook 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
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|
39,705 | $1,121,269 |
All Filings in BLFS
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,121,269 | 39,705 | Shares | Sole | 2026-07-23 | |
| 2026-03-31 | $441,797 | 23,155 | Shares | Sole | 2026-04-21 | |
| 2025-12-31 | $555,051 | 22,955 | Shares | Sole | 2026-01-06 | |
| 2025-09-30 | $590,684 | 23,155 | Shares | Sole | 2025-10-22 | |
| 2025-06-30 | $498,758 | 23,155 | Shares | Sole | 2025-07-28 | |
| 2025-03-31 | $694,907 | 30,425 | Shares | Sole | 2025-04-01 | |
| 2024-12-31 | $795,674 | 30,650 | Shares | Sole | 2025-01-23 | |
| 2024-09-30 | $767,476 | 30,650 | Shares | Sole | 2024-10-15 | |
| 2024-06-30 | $836,091 | 39,015 | Shares | Sole | 2024-07-24 | |
| 2024-03-31 | $746,637 | 40,250 | Shares | Sole | 2024-04-18 | |
| 2023-12-31 | $665,437 | 40,950 | Shares | Sole | 2024-01-16 | |
| 2023-09-30 | $573,115 | 41,500 | Shares | Sole | 2023-10-10 | |
| 2023-06-30 | $917,150 | 41,500 | Shares | Sole | 2023-07-17 | |
| 2023-03-31 | $902,625 | 41,500 | Shares | Sole | 2023-04-20 | |
| 2022-12-31 | $738,556 | 40,580 | Shares | Sole | 2023-01-24 | |
| 2022-09-30 | $924,332 | 40,630 | Shares | Sole | 2022-10-31 | |
| 2022-06-30 | $667,230 | 48,315 | Shares | Sole | 2022-07-29 | |
| 2022-03-31 | $1,105,018 | 48,615 | Shares | Sole | 2022-04-26 | |
| 2021-12-31 | $1,811,881 | 48,615 | Shares | Sole | 2022-01-10 | |
| 2021-09-30 | $2,060,772 | 48,695 | Shares | Sole | 2021-10-26 | |
| 2021-06-30 | $2,162,963 | 48,595 | Shares | Sole | 2021-07-27 | |
| 2021-03-31 | $1,757,700 | 48,825 | Shares | Sole | 2021-05-06 | |
| 2020-12-31 | $1,947,629 | 48,825 | Shares | Sole | 2022-04-25 | |
| 2020-09-30 | $1,412,995 | 48,825 | Shares | Sole | 2020-10-23 | |
| 2020-06-30 | $752,018 | 45,995 | Shares | Sole | 2020-07-28 | |
| 2020-03-31 | $436,952 | 45,995 | Shares | Sole | 2020-04-14 | |
| No filing history on record for this holder in this stock. | ||||||