Penumbra, Inc.
US ˙ NYSE ˙ US70975L1070

SecurityPEN / Penumbra, Inc.
InstitutionDriehaus Capital Management Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Driehaus Capital Management Llc closes position in PEN / Penumbra, Inc.

On February 17, 2026 - Driehaus Capital Management Llc filed a 13F-HR form disclosing ownership of 0 shares of Penumbra, Inc. (US:PEN) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 14, 2025 disclosing 45,819 shares of Penumbra, Inc.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-17 2025-12-31 13F PENUMBRA COM 70975L107 0 -100.00 0
2025-11-14 2025-09-30 13F PENUMBRA COM 70975L107 45,819 -72,824 -61.38 11,607 -61.88 0.0831
2025-08-14 2025-06-30 13F PENUMBRA COM 70975L107 118,643 42,365 55.54 30,447 49.27 0.2436
2025-05-15 2025-03-31 13F PENUMBRA COM 70975L107 76,278 76,278 20,398 0.1966
2024-05-15 2024-03-31 13F PENUMBRA COM 70975L107 0 -34,579 -100.00 0 -100.00
2024-02-14 2023-12-31 13F PENUMBRA COM 70975L107 34,579 -35 -0.10 8,698 3.88 0.1048
2023-11-14 2023-09-30 13F PENUMBRA COM 70975L107 34,614 -58,978 -63.02 8,373 -74.00 0.1089
2023-08-14 2023-06-30 13F PENUMBRA COM 70975L107 93,592 6,587 7.57 32,201 32.80 0.4066
2023-05-15 2023-03-31 13F PENUMBRA COM 70975L107 87,005 14,377 19.80 24,247 50.08 0.3403
2023-02-14 2022-12-31 13F PENUMBRA COM 70975L107 72,628 29,073 66.75 16,157 95.64 0.2409
2022-11-14 2022-09-30 13F PENUMBRA COM 70975L107 43,555 43,555 8,258 0.1250
2021-02-16 2020-12-31 13F PENUMBRA COM 70975L107 0 -2,143 -100.00 0 -100.00
2020-11-16 2020-09-30 13F PENUMBRA COM 70975L107 2,143 -679 -24.06 417 -17.43 0.0086
2020-08-14 2020-06-30 13F PENUMBRA COM 70975L107 2,822 44 1.58 505 12.72 0.0123
2020-05-15 2020-03-31 13F PENUMBRA COM 70975L107 2,778 -1,091 -28.20 448 -29.56 0.0150
2020-02-12 2019-12-31 13F PENUMBRA COM 70975L107 3,869 5 0.13 636 22.31 0.0169
2019-11-14 2019-09-30 13F PENUMBRA COM 70975L107 3,864 1,079 38.74 520 16.59 0.0169
2019-08-14 2019-06-30 13F PENUMBRA COM 70975L107 2,785 2,785 446 0.0140
2019-05-15 2019-03-31 13F PENUMBRA COM 70975L107 0 -2,981 -100.00 0 -100.00
2019-02-14 2018-12-31 13F PENUMBRA COM 70975L107 2,981 -5,880 -66.36 364 -72.55 0.0156
2018-11-14 2018-09-30 13F PENUMBRA COM 70975L107 8,861 -10,331 -53.83 1,326 -49.98 0.0408
2018-08-14 2018-06-30 13F PENUMBRA COM 70975L107 19,192 -3,750 -16.35 2,651 -0.08 0.0896
2018-05-15 2018-03-31 13F PENUMBRA COM 70975L107 22,942 22,942 2,653 0.0937
2017-11-14 2017-09-30 13F PENUMBRA COM 70975L107 0 -40,876 -100.00 0 -100.00
2017-08-14 2017-06-30 13F PENUMBRA COM 70975L107 40,876 115 0.28 3,587 5.44 0.1319
2017-05-16 2017-03-31 13F PENUMBRA COM 70975L107 40,761 14,222 53.59 3,402 100.95 0.1165
2017-02-14 2016-12-31 13F PENUMBRA COM 70975L107 26,539 -30,548 -53.51 1,693 -60.97 0.0599
2016-11-14 2016-09-30 13F PENUMBRA COM 70975L107 57,087 3,542 6.61 4,338 36.16 0.1466
2016-08-15 2016-06-30 13F PENUMBRA COM 70975L107 53,545 23,375 77.48 3,186 129.54 0.1136
2016-05-13 2016-03-31 13F PENUMBRA COM 70975L107 30,170 -1,089 -3.48 1,388 -17.48 0.0450
2016-02-12 2015-12-31 13F PENUMBRA COM 70975L107 31,259 31,259 1,682 0.0567
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.