Impinj Inc

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Impinj Inc
TickerPI
CIK #0001114995
CUSIP453204109
SectorManufacturing - Electronic Components, Nec
Address400 Fairview Avenue North Suite 1200, Seattle, WA 98109
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Impinj Inc 2012-07-26 21.6 M Exemption: 506 · Remaining: $6,110,942 · Duration: One year or less · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001114995] 10-K
[0001114995] 10-Q
[0001114995] 3
[0001114995] 4
[0001114995] 5
[0001114995] 8-K
[0001114995] D
[0001114995] SC 13D
[0001114995] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Portfolio Management LLC Impinj Inc [2026-04-29] 0.0
Capital International Investors Impinj Inc [2025-02-14] 0.0
Sylebra Capital LLC Impinj Inc [2024-06-10] 11.54
FMR LLC Impinj Inc [2023-06-12] 0.0
Invesco Ltd Impinj Inc [2023-02-10] 8.6
Vanguard Group Inc Impinj Inc [2023-02-09] 7.41
Gilder Gagnon Howe & Co LLC Impinj Inc [2022-02-14] 6.4
Assenagon Asset Management Sa Impinj Inc [2020-08-04] 5.15
Assenagon Asset Management Sa Impinj Inc [2020-08-04] 1.81
BlackRock Inc Impinj Inc [2020-02-07] 5.2
Toronado Fund LP Impinj Inc [2020-01-13] 5.83
Assenagon Asset Management Sa Impinj Inc [2019-05-08] 6.3
BlackRock Inc Impinj Inc [2019-02-08] 5.3
Sylebra HK Co Ltd Impinj Inc [2018-06-27] 19.8
BlackRock Inc Impinj Inc [2018-02-01] 5.5
Ice Pond Lane Advisers LLC Impinj Inc [2017-08-11] 3.0
Gilder Gagnon Howe & Co LLC Impinj Inc [2017-06-07] 10.27
Sylebra HK Co Ltd Impinj Inc [2017-04-10] 14.3
Madrona Venture Fund I-A L P Impinj Inc [2017-02-14] 5.9
Gilder Gagnon Howe & Co LLC Impinj Inc [2017-02-14] 0.85
Diorio Chris PhD Impinj Inc [2017-02-14] 5.4
Granahan Investment Management Inc/Ma Impinj Inc [2017-02-13] 5.2
Intel Corp Impinj Inc [2017-02-10] 5.3
Bank of New York Mellon Corp Impinj Inc [2017-02-03] 5.48
Form 3/4/5 Filer 2011 - 2026
Impinj Inc
Diorio Chris PhD
Baker Cary
Sylebra Capital LLC
Rao Meera
Padval Umesh
Sanghi Steve
Washington Miron
Valdez Arthur L Jr
Gibson Daniel Patrick
Phelan Cathal G
Mecklai Hussein
Dossett Jeffrey
Sylebra Capital Ltd
Sessler Gregory
Wise Theresa
van Oppen Peter H
Alberg Tom A
Bybee Clinton
Sylebra Capital Limited
Brodersen Eric
Masters Denise
FEIN Evan
Palhetas Walter Xavier
Arch Venture Partners V LLC
Arch V Entrepreneurs Fund LP
Arch Venture Partners V LP
Lazarus Steven
Nelsen Robert
Arch Venture Fund V LP
Crandell Keith
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Diorio Chris PhD
Restricted Stock Units · derivative
2026-03-23 Grant 24,806 $0.00
Baker Cary
Common Stock
2026-03-23 Option exercise 597 $0.00
Diorio Chris PhD
Common Stock
2026-03-23 Option exercise 2,594 $0.00
Diorio Chris PhD
Common Stock
2026-03-23 Option exercise 1,224 $0.00
Diorio Chris PhD
Restricted Stock Units · derivative
2026-03-23 Option exercise 1,224 $0.00
Baker Cary
Restricted Stock Units · derivative
2026-03-23 Grant 7,627 $0.00
Diorio Chris PhD
Restricted Stock Units · derivative
2026-03-23 Option exercise 2,594 $0.00
Diorio Chris PhD
Common Stock
2026-03-23 Tax withheld 2,218 $101.17 224,395
Diorio Chris PhD
Common Stock
2026-03-23 Option exercise 1,817 $0.00
Baker Cary
Restricted Stock Units · derivative
2026-03-23 Option exercise 479 $0.00
Baker Cary
Common Stock
2026-03-23 Option exercise 782 $0.00
Diorio Chris PhD
Restricted Stock Units · derivative
2026-03-23 Option exercise 1,817 $0.00
Baker Cary
Common Stock
2026-03-23 Tax withheld 732 $101.17 74,056
Baker Cary
Restricted Stock Units · derivative
2026-03-23 Option exercise 597 $0.00
Baker Cary
Restricted Stock Units · derivative
2026-03-23 Option exercise 782 $0.00
Baker Cary
Common Stock
2026-03-23 Option exercise 479 $0.00
Baker Cary
Common Stock
2026-02-20 Tax withheld 2,234 $127.92 285,773
Baker Cary
Common Stock
2026-02-20 Grant 8,508 $0.00
Diorio Chris PhD
Common Stock
2026-02-20 Grant 21,734 $0.00
Diorio Chris PhD
Common Stock
2026-02-20 Tax withheld 7,435 $127.92 951,085
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 292 31,837,581
2025-12-31 333 31,425,768
2025-09-30 332 31,154,352
2025-06-30 296 31,267,020
2025-03-31 283 30,954,922
2024-12-31 320 30,665,257
2024-09-30 330 29,867,566
2024-06-30 275 28,373,704
2024-03-31 234 29,811,935
2023-12-31 203 29,615,511
2023-09-30 196 31,678,790
2023-06-30 228 27,960,870
Form 13F Holdings
Firm Period DFND Voting Shares
Riverbridge Partners LLC [2026-06-30] SOLE 48,634 56,028
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 14 41,585
Ardsley Advisory Partners LP [2026-06-30] SOLE 33,000 33,000
Pachira Investments Inc [2026-06-30] SOLE 0 18,104
Louisiana State Employees Retirement System [2026-06-30] SOLE 11,900 11,900
Alaska Retirement Management Board [2026-06-30] SOLE 10,576 10,576
Jamison Private Wealth Management Inc [2026-06-30] SOLE 0 10,298
Yousif Capital Management LLC [2026-06-30] SOLE 1,705 7,225
Commonwealth of Pennsylvania Public School Empls Retrmt SYS [2026-06-30] SOLE 6,428 6,428
Assenagon Asset Management SA [2026-06-30] SOLE 6,138 6,138
HM Payson & Co [2026-06-30] SOLE 3,000 3,300
Register Financial Advisors LLC [2026-06-30] SOLE 0 3,100
Versant Capital Management Inc [2026-06-30] SOLE 2,091 2,091
Clark Financial Services Group Inc /BD [2026-06-30] SOLE 0 1,819
Avior Wealth Management LLC [2026-06-30] SOLE 0 1,698
Gamma Investing LLC [2026-06-30] DFND 1,650 1,650
Crossmark Global Holdings Inc [2026-06-30] SOLE 1,520 1,520
Community Financial Services Group LLC [2026-06-30] SOLE 595 595
IFP Advisors LLC [2026-06-30] SOLE 546 546
Clark Financial Services Group Inc /BD [2026-06-30] OTR 0 399
Farther Finance Advisors LLC [2026-06-30] SOLE 0 81
MassMutual Private Wealth & Trust FSB [2026-06-30] SOLE 73 73
Salem Investment Counselors Inc [2026-06-30] SOLE 65 65
Harbor Investment Advisory LLC [2026-06-30] SOLE 60 60
Farmers & Merchants Investments Inc [2026-06-30] SOLE 14 14
Handelsbanken Fonder AB [2026-06-30] SOLE 0 10
Marquette Asset Management LLC [2026-06-30] SOLE 0 5
Physician Wealth Advisors Inc [2026-06-30] SOLE 0 4
JFS Wealth Advisors LLC [2026-06-30] SOLE 0 4
Hughes Financial Services LLC [2026-06-30] SOLE 4 4
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