Penumbra, Inc.
US ˙ NYSE ˙ US70975L1070

SecurityPEN / Penumbra, Inc.
InstitutionCommerce Bank
Latest Disclosed Ownership3,786 shares
Latest Disclosed Value $ 1,243,209
Commerce Bank reports 61.24% decrease in ownership of PEN / Penumbra, Inc.

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 3,786 shares of Penumbra, Inc. (US:PEN) valued at $1,243,209 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 9,769 shares of Penumbra, Inc.. This represents a change in shares of -61.24% during the quarter. The current value of the position is $1,209,135 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.

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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)
2026-05-11 2026-03-31 13F PENUMBRA COM 70975L107 3,786 -5,983 -61.24 1,243 -59.07 0.0026
2026-02-13 2025-12-31 13F PENUMBRA COM 70975L107 9,769 -4,049 -29.30 3,037 -13.23 0.0168
2025-11-12 2025-09-30 13F PENUMBRA COM 70975L107 13,818 1,391 11.19 3,500 9.75 0.0195
2025-08-07 2025-06-30 13F PENUMBRA COM 70975L107 12,427 2,459 24.67 3,189 19.66 0.0188
2025-05-08 2025-03-31 13F PENUMBRA COM 70975L107 9,968 8,808 759.31 2,666 869.09 0.0170
2025-02-13 2024-12-31 13F PENUMBRA COM 70975L107 1,160 1,160 275 0.0017
2022-02-14 2021-12-31 13F PENUMBRA COM 70975L107 0 -16,207 -100.00 0 -100.00
2021-11-09 2021-09-30 13F PENUMBRA COM 70975L107 16,207 365 2.30 4,319 -0.51 0.0305
2021-08-09 2021-06-30 13F PENUMBRA COM 70975L107 15,842 36 0.23 4,341 1.52 0.0308
2021-05-05 2021-03-31 13F PENUMBRA COM 70975L107 15,806 -5,557 -26.01 4,276 14.39 0.0325
2021-02-09 2020-12-31 13F PENUMBRA COM 70975L107 21,363 486 2.33 3,738 -7.89 0.0302
2020-11-06 2020-09-30 13F PENUMBRA COM 70975L107 20,877 -340 -1.60 4,058 6.93 0.0367
2020-08-07 2020-06-30 13F PENUMBRA COM 70975L107 21,217 21,217 3,795 0.0370
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.