Impinj, Inc.
MX ˙ BMV ˙ US4532041096
SecurityMX:PI / Impinj, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership72,424 shares
Latest Disclosed Value $ 7,437,926
Rhumbline Advisers reports 4.36% increase in ownership of PI / Impinj, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 72,424 shares of Impinj, Inc. (MX:PI) valued at $7,437,926 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 69,396 shares of Impinj, Inc.. This represents a change in shares of 4.36% during the quarter.

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)
2026-05-12 2026-03-31 13F IMPINJ COM 453204109 72,424 3,028 4.36 7,438 -38.41 0.0064
2026-02-13 2025-12-31 13F IMPINJ COM 453204109 69,396 -2,353 -3.28 12,076 -6.89 0.0098
2025-11-06 2025-09-30 13F IMPINJ COM 453204109 71,749 2,542 3.67 12,969 68.72 0.0104
2025-08-12 2025-06-30 13F IMPINJ COM 453204109 69,207 7,098 11.43 7,687 36.45 0.0066
2025-05-29 2025-03-31 13F/A-1 IMPINJ COM 453204109 62,109 919 1.50 5,633 -36.62 0.0053
2025-04-08 2025-03-31 13F IMPINJ COM 453204109 62,109 919 5,633 0.0053
2025-05-29 2024-12-31 13F/A-1 IMPINJ COM 453204109 61,190 -421 -0.68 8,888 -33.37 0.0080
2025-01-30 2024-12-31 13F IMPINJ COM 453204109 61,190 -421 8,888 0.0080
2024-11-12 2024-09-30 13F IMPINJ COM 453204109 61,611 28,711 87.27 13,340 158.66 0.0120
2024-08-01 2024-06-30 13F IMPINJ COM 453204109 32,900 248 0.76 5,158 23.02 0.0048
2024-05-09 2024-03-31 13F IMPINJ COM 453204109 32,652 855 2.69 4,193 46.47 0.0040
2024-02-08 2023-12-31 13F IMPINJ COM 453204109 31,797 -431 -1.34 2,863 61.42 0.0030
2023-11-09 2023-09-30 13F IMPINJ COM 453204109 32,228 989 3.17 1,773 -36.68 0.0021
2023-08-08 2023-06-30 13F IMPINJ COM 453204109 31,239 1,085 3.60 2,801 69,900.00 0.0031
2023-05-11 2023-03-31 13F IMPINJ COM 453204109 30,154 437 1.47 4 -99.88 0.0050
2023-02-14 2022-12-31 13F IMPINJ COM 453204109 29,717 2,017 7.28 3,245 46.37 0.0044
2022-11-10 2022-09-30 13F IMPINJ COM 453204109 27,700 2,222 8.72 2,217 48.29 0.0033
2022-08-11 2022-06-30 13F IMPINJ COM 453204109 25,478 5,858 29.86 1,495 19.89 0.0022
2022-05-12 2022-03-31 13F IMPINJ COM 453204109 19,620 516 2.70 1,247 -26.43 0.0016
2022-02-10 2021-12-31 13F IMPINJ COM 453204109 19,104 35 0.18 1,695 55.65 0.0021
2021-11-12 2021-09-30 13F IMPINJ COM 453204109 19,069 840 4.61 1,089 15.85 0.0015
2021-08-05 2021-06-30 13F IMPINJ COM 453204109 18,229 -1,104 -5.71 940 -14.47 0.0012
2021-05-06 2021-03-31 13F IMPINJ COM 453204109 19,333 -1,862 -8.79 1,099 23.90 0.0015
2021-02-10 2020-12-31 13F IMPINJ COM 453204109 21,195 521 2.52 887 62.75 0.0012
2020-11-12 2020-09-30 13F IMPINJ COM 453204109 20,674 -4,051 -16.38 545 -19.73 0.0009
2020-08-13 2020-06-30 13F IMPINJ COM 453204109 24,725 2,208 9.81 679 80.59 0.0011
2020-05-06 2020-03-31 13F IMPINJ COM 453204109 22,517 1,363 6.44 376 -31.26 0.0008
2020-02-05 2019-12-31 13F IMPINJ COM 453204109 21,154 797 3.92 547 -12.90 0.0009
2019-10-23 2019-09-30 13F IMPINJ COM 453204109 20,357 -5 -0.02 628 7.72 0.0011
2019-08-14 2019-06-30 13F IMPINJ COM 453204109 20,362 -1,216 -5.64 583 61.05 0.0011
2019-05-01 2019-03-31 13F IMPINJ COM 453204109 21,578 -177 -0.81 362 14.20 0.0007
2019-01-31 2018-12-31 13F IMPINJ COM 453204109 21,755 6,684 44.35 317 -15.24 0.0007
2018-11-07 2018-09-30 13F IMPINJ COM 453204109 15,071 -2,325 -13.37 374 -2.86 0.0007
2018-08-06 2018-06-30 13F IMPINJ COM 453204109 17,396 1,175 7.24 385 82.46 0.0008
2018-05-02 2018-03-31 13F IMPINJ COM 453204109 16,221 -10 -0.06 211 -42.35 0.0004
2018-02-09 2017-12-31 13F IMPINJ COM 453204109 16,231 -3,219 -16.55 366 -54.76 0.0007
2017-11-06 2017-09-30 13F IMPINJ COM 453204109 19,450 280 1.46 809 -13.29 0.0018
2017-08-02 2017-06-30 13F IMPINJ COM 453204109 19,170 19,170 933 0.0021
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.