Impinj, Inc.
US ˙ NasdaqGS ˙ US4532041096

SecurityPI / Impinj, Inc.
InstitutionDriehaus Capital Management Llc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Driehaus Capital Management Llc closes position in PI / Impinj, Inc.

On May 15, 2026 - Driehaus Capital Management Llc filed a 13F-HR form disclosing ownership of 0 shares of Impinj, Inc. (US:PI) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 737,474 shares of Impinj, 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.

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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)
2026-05-15 2026-03-31 13F Impinj COM 453204109 0 -100.00 0
2026-02-17 2025-12-31 13F Impinj COM 453204109 737,474 222,974 43.34 128,328 37.99 0.8717
2025-11-14 2025-09-30 13F IMPINJ COM 453204109 514,500 514,500 92,996 0.6661
2025-05-15 2025-03-31 13F IMPINJ COM 453204109 0 -213,714 -100.00 0 -100.00
2025-02-14 2024-12-31 13F IMPINJ COM 453204109 213,714 136,277 175.98 31,044 85.16 0.2562
2024-11-14 2024-09-30 13F IMPINJ COM 453204109 77,437 77,437 16,767 0.1439
2023-11-14 2023-09-30 13F IMPINJ COM 453204109 0 -164,938 -100.00 0 -100.00
2023-08-14 2023-06-30 13F IMPINJ COM 453204109 164,938 -465,052 -73.82 14,787 -82.68 0.1867
2023-05-15 2023-03-31 13F IMPINJ COM 453204109 629,990 -88,983 -12.38 85,376 8.76 1.1983
2023-02-14 2022-12-31 13F IMPINJ COM 453204109 718,973 -127,460 -15.06 78,497 15.88 1.1703
2022-11-14 2022-09-30 13F IMPINJ COM 453204109 846,433 316,401 59.69 67,740 117.83 1.0257
2022-08-15 2022-06-30 13F IMPINJ COM 453204109 530,032 -137,883 -20.64 31,097 -26.73 0.5037
2022-05-16 2022-03-31 13F IMPINJ COM 453204109 667,915 -296,727 -30.76 42,439 -50.40 0.5211
2022-02-14 2021-12-31 13F IMPINJ COM 453204109 964,642 306,617 46.60 85,564 127.61 0.8732
2021-11-15 2021-09-30 13F IMPINJ COM 453204109 658,025 230,562 53.94 37,593 70.47 0.4458
2021-08-16 2021-06-30 13F IMPINJ COM 453204109 427,463 105,641 32.83 22,053 20.50 0.2922
2021-05-17 2021-03-31 13F IMPINJ COM 453204109 321,822 321,822 18,302 0.2700
2020-05-15 2020-03-31 13F IMPINJ COM 453204109 0 -320,126 -100.00 0 -100.00
2020-02-12 2019-12-31 13F IMPINJ COM 453204109 320,126 84,488 35.85 8,278 13.94 0.2201
2019-11-14 2019-09-30 13F IMPINJ COM 453204109 235,638 235,638 7,265 0.2363
2019-02-14 2018-12-31 13F IMPINJ COM 453204109 0 -512,770 -100.00 0 -100.00
2018-11-14 2018-09-30 13F IMPINJ COM 453204109 512,770 512,770 12,727 0.3918
2018-02-14 2017-12-31 13F IMPINJ COM 453204109 0 -69,539 -100.00 0 -100.00
2017-11-14 2017-09-30 13F IMPINJ COM 453204109 69,539 -222,232 -76.17 2,894 -79.61 0.1128
2017-08-14 2017-06-30 13F IMPINJ COM 453204109 291,771 -347,914 -54.39 14,195 -26.69 0.5219
2017-05-16 2017-03-31 13F IMPINJ COM 453204109 639,685 -14,711 -2.25 19,363 -16.27 0.6633
2017-02-14 2016-12-31 13F IMPINJ COM 453204109 654,396 325,150 98.76 23,126 87.71 0.8179
2016-11-14 2016-09-30 13F IMPINJ COM 453204109 329,246 329,246 12,320 0.4164
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.