Penumbra, Inc.
US ˙ NYSE ˙ US70975L1070

SecurityPEN / Penumbra, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership18,678 shares
Latest Disclosed Value $ 6,133
Amalgamated Bank reports 0.95% increase in ownership of PEN / Penumbra, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 18,678 shares of Penumbra, Inc. (US:PEN) valued at $6,133,295 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 18,502 shares of Penumbra, Inc.. This represents a change in shares of 0.95% during the quarter. The current value of the position is $5,965,193 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)
2026-05-08 2026-03-31 13F PENUMBRA COM 70975L107 18,678 176 0.95 6 20.00 0.0469
2026-02-05 2025-12-31 13F PENUMBRA COM 70975L107 18,502 -918 -4.73 6 25.00 0.0415
2025-10-29 2025-09-30 13F PENUMBRA COM 70975L107 19,420 355 1.86 5 0.00 0.0351
2025-08-04 2025-06-30 13F PENUMBRA COM 70975L107 19,065 866 4.76 5 0.00 0.0378
2025-04-25 2025-03-31 13F PENUMBRA COM 70975L107 18,199 -515 -2.75 5 0.00 0.0416
2025-02-04 2024-12-31 13F PENUMBRA COM 70975L107 18,714 -220 -1.16 4 33.33 0.0365
2024-10-30 2024-09-30 13F PENUMBRA COM 70975L107 18,934 -1,040 -5.21 4 0.00 0.0303
2024-08-12 2024-06-30 13F PENUMBRA COM 70975L107 19,974 -1,344 -6.30 4 -25.00 0.0306
2024-04-23 2024-03-31 13F PENUMBRA COM 70975L107 21,318 -4,781 -18.32 5 -33.33 0.0407
2024-02-06 2023-12-31 13F PENUMBRA COM 70975L107 26,099 -1,357 -4.94 7 0.00 0.0524
2023-11-08 2023-09-30 13F PENUMBRA COM 70975L107 27,456 394 1.46 7 -33.33 0.0566
2023-08-11 2023-06-30 13F PENUMBRA COM 70975L107 27,062 -485 -1.76 9 28.57 0.0754
2023-05-02 2023-03-31 13F PENUMBRA COM 70975L107 27,547 -1,248 -4.33 8 16.67 0.0654
2023-02-10 2022-12-31 13F PENUMBRA COM 70975L107 28,795 402 1.42 6 -99.89 0.0571
2022-11-09 2022-09-30 13F PENUMBRA COM 70975L107 28,393 1,978 7.49 5,383 63.67 0.0520
2022-08-15 2022-06-30 13F PENUMBRA COM 70975L107 26,415 303 1.16 3,289 -43.29 0.0307
2022-08-25 2022-03-31 13F/A-1 PENUMBRA COM 70975L107 26,112 9 0.03 5,800 -22.67 0.0451
2022-06-30 2022-03-31 13F PENUMBRA COM 70975L107 26,112 9 5,800 0.0461
2022-02-15 2021-12-31 13F/A-1 PENUMBRA COM 70975L107 26,103 1,706 6.99 7,500 15.35 0.0554
2022-02-15 2021-12-31 13F PENUMBRA COM 70975L107 26,103 1,706 7,500 0.0554
2021-10-29 2021-09-30 13F PENUMBRA COM 70975L107 24,397 -2,310 -8.65 6,502 -11.16 0.0549
2021-08-16 2021-06-30 13F PENUMBRA COM 70975L107 26,707 20,282 315.67 7,319 321.12 0.0587
2021-05-13 2021-03-31 13F PENUMBRA COM 70975L107 6,425 -537 -7.71 1,738 42.69 0.0652
2021-02-12 2020-12-31 13F PENUMBRA COM 70975L107 6,962 23 0.33 1,218 -9.71 0.0462
2020-10-30 2020-09-30 13F PENUMBRA COM 70975L107 6,939 13 0.19 1,349 8.88 0.0586
2020-08-10 2020-06-30 13F PENUMBRA COM 70975L107 6,926 -1,592 -18.69 1,239 -9.83 0.0573
2020-05-13 2020-03-31 13F PENUMBRA COM 70975L107 8,518 -191 -2.19 1,374 -3.98 0.0336
2020-02-13 2019-12-31 13F PENUMBRA COM 70975L107 8,709 450 5.45 1,431 28.80 0.0263
2019-11-13 2019-09-30 13F PENUMBRA COM 70975L107 8,259 1,309 18.83 1,111 -0.09 0.0234
2019-08-14 2019-06-30 13F PENUMBRA COM 70975L107 6,950 -39 -0.56 1,112 8.28 0.0260
2019-05-15 2019-03-31 13F PENUMBRA COM 70975L107 6,989 131 1.91 1,027 22.55 0.0249
2019-02-15 2018-12-31 13F PENUMBRA COM 70975L107 6,858 2,650 62.98 838 33.02 0.0237
2018-11-14 2018-09-30 13F PENUMBRA COM 70975L107 4,208 -2,943 -41.16 630 -36.23 0.0156
2018-07-18 2018-06-30 13F PENUMBRA COM 70975L107 7,151 3,238 82.75 988 118.10 0.0241
2018-05-22 2018-03-31 13F PENUMBRA COM 70975L107 3,913 -81 -2.03 453 20.48 0.0120
2018-02-13 2017-12-31 13F PENUMBRA COM 70975L107 3,994 256 6.85 376 11.24 0.0102
2017-11-09 2017-09-30 13F PENUMBRA COM 70975L107 3,738 88 2.41 338 5.63 0.0105
2017-08-10 2017-06-30 13F PENUMBRA COM 70975L107 3,650 362 11.01 320 16.79 0.0105
2017-05-12 2017-03-31 13F PENUMBRA COM 70975L107 3,288 596 22.14 274 33.66 0.0136
2016-11-15 2016-09-30 13F/A-1 PENUMBRA COM 70975L107 2,692 2,692 205 0.0119
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.