Impinj, Inc.
US ˙ NasdaqGS ˙ US4532041096

SecurityPI / Impinj, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership29,189 shares
Latest Disclosed Value $ 2,997,711
Citigroup Inc reports 28.19% increase in ownership of PI / Impinj, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 29,189 shares of Impinj, Inc. (US:PI) valued at $2,997,710 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 22,770 shares of Impinj, Inc.. This represents a change in shares of 28.19% during the quarter. The current value of the position is $4,021,077 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 IMPINJ COM 453204109 29,189 6,419 28.19 2,998 -24.36 0.0006
2026-02-13 2025-12-31 13F IMPINJ COM 453204109 22,770 11,089 94.93 3,962 87.68 0.0017
2025-11-10 2025-09-30 13F IMPINJ COM 453204109 11,681 -17,656 -60.18 2,111 -35.21 0.0009
2025-08-11 2025-06-30 13F IMPINJ COM 453204109 29,337 -9,346 -24.16 3,258 -7.13 0.0016
2025-05-12 2025-03-31 13F IMPINJ COM 453204109 38,683 3,751 10.74 3,509 -30.86 0.0018
2025-02-12 2024-12-31 13F IMPINJ COM 453204109 34,932 2,167 6.61 5,074 -28.47 0.0030
2024-11-12 2024-09-30 13F IMPINJ COM 453204109 32,765 22,803 228.90 7,094 354.45 0.0041
2024-08-12 2024-06-30 13F IMPINJ COM 453204109 9,962 1,653 19.89 1,562 46.44 0.0010
2024-05-10 2024-03-31 13F IMPINJ COM 453204109 8,309 -669 -7.45 1,067 31.93 0.0007
2024-02-09 2023-12-31 13F IMPINJ COM 453204109 8,978 1,950 27.75 808 109.33 0.0006
2023-12-06 2023-09-30 13F/A-1 IMPINJ COM 453204109 7,028 -5,111 -42.10 387 -64.52 0.0003
2023-11-09 2023-09-30 13F IMPINJ COM 453204109 7,028 -5,111 387 0.0001
2023-08-10 2023-06-30 13F IMPINJ COM 453204109 12,139 6,771 126.14 1,088 49.66 0.0007
2023-05-11 2023-03-31 13F IMPINJ COM 453204109 5,368 523 10.79 727 37.69 0.0005
2023-02-09 2022-12-31 13F IMPINJ COM 453204109 4,845 -1,438 -22.89 529 5.18 0.0004
2022-11-10 2022-09-30 13F IMPINJ COM 453204109 6,283 -3,830 -37.87 502 -15.35 0.0004
2022-08-10 2022-06-30 13F IMPINJ COM 453204109 10,113 240 2.43 593 -5.42 0.0004
2022-05-12 2022-03-31 13F IMPINJ COM 453204109 9,873 -2,286 -18.80 627 -41.84 0.0004
2022-02-10 2021-12-31 13F IMPINJ COM 453204109 12,159 7,234 146.88 1,078 283.63 0.0006
2021-11-10 2021-09-30 13F IMPINJ COM 453204109 4,925 300 6.49 281 17.57 0.0002
2021-08-10 2021-06-30 13F IMPINJ COM 453204109 4,625 3,282 244.38 239 214.47 0.0001
2021-05-13 2021-03-31 13F IMPINJ COM 453204109 1,343 -2,133 -61.36 76 -47.95 0.0000
2021-02-11 2020-12-31 13F IMPINJ COM 453204109 3,476 2,464 243.48 146 440.74 0.0001
2020-11-12 2020-09-30 13F IMPINJ COM 453204109 1,012 -4,398 -81.29 27 -81.88 0.0000
2020-08-12 2020-06-30 13F IMPINJ COM 453204109 5,410 -5,704 -51.32 149 -19.89 0.0001
2020-05-12 2020-03-31 13F IMPINJ COM 453204109 11,114 5,714 105.81 186 32.86 0.0002
2020-02-12 2019-12-31 13F IMPINJ COM 453204109 5,400 3,088 133.56 140 97.18 0.0001
2019-11-08 2019-09-30 13F IMPINJ COM 453204109 2,312 -262 -10.18 71 -4.05 0.0001
2019-08-12 2019-06-30 13F IMPINJ COM 453204109 2,574 626 32.14 74 124.24 0.0001
2019-05-13 2019-03-31 13F IMPINJ COM 453204109 1,948 -94 -4.60 33 10.00 0.0000
2019-02-12 2018-12-31 13F IMPINJ COM 453204109 2,042 2,028 14,485.71 30 0.0000
2018-11-13 2018-09-30 13F IMPINJ COM 453204109 14 14 0 0.0000
2018-08-10 2018-06-30 13F IMPINJ COM 453204109 0 -95 -100.00 0 -100.00
2018-05-11 2018-03-31 13F IMPINJ COM 453204109 95 -963 -91.02 1 -95.83 0.0000
2018-02-12 2017-12-31 13F IMPINJ COM 453204109 1,058 -4,401 -80.62 24 -89.43 0.0000
2017-11-13 2017-09-30 13F IMPINJ COM 453204109 5,459 1,364 33.31 227 14.07 0.0002
2017-08-11 2017-06-30 13F IMPINJ COM 453204109 4,095 3,766 1,144.68 199 1,890.00 0.0002
2017-05-12 2017-03-31 13F IMPINJ COM 453204109 329 -1,387 -80.83 10 -83.61 0.0000
2017-02-10 2016-12-31 13F IMPINJ COM 453204109 1,716 761 79.69 61 69.44 0.0001
2016-11-10 2016-09-30 13F IMPINJ COM 453204109 955 955 36 0.0000
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.