Institutional Ownership
Impinj Inc
CUSIP 453204109COMPIQ1 2026
13D / 13G Filings
43
Schedule 13D/13G on record
Beneficial Filers
15
Distinct reporting persons
Largest Stake
15.0%
Max % of class reported
Institutional Holders
281
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
43 filings · latest Dec 17, 2025
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Dec 17, 2025 | Sylebra Capital LLC | 13D/A | 3.8% | — | SEC |
| 2 | Dec 5, 2025 | Sylebra Capital LLC | 13D/A | 5.0% | — | SEC |
| 3 | Sep 12, 2025 | Sylebra Capital LLC | 13D/A | 6.3% | — | SEC |
| 4 | Feb 14, 2025 | Capital International Investors | 13G | 5.4% | 1.53M | SEC |
| 5 | Nov 12, 2024 | Sylebra Capital LLC | 13D/A | 7.9% | 2.22M | SEC |
| 6 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 11.9% | 3.34M | SEC |
| 7 | Nov 8, 2024 | Sylebra Capital LLC | 13D/A | 9.2% | 2.61M | SEC |
| 8 | Nov 6, 2024 | Sylebra Capital LLC | 13D/A | 10.3% | 2.90M | SEC |
| 9 | Nov 4, 2024 | Vanguard Group Inc | 13G/A | 11.9% | 3.34M | SEC |
| 10 | Oct 7, 2024 | Blackrock, Inc. | 13G/A | 13.5% | 3.79M | SEC |
33 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Impinj Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 4.31M | $443.00M |
| 2 | Fmr LLC | 4.28M | $439.61M |
| 3 | State Street Corp | 1.48M | $152.50M |
| 4 | Capital International Investors | 1.35M | $138.89M |
| 5 | Sylebra Capital LLC | 1.13M | $116.27M |
| 6 | Capital World Investors | 1.02M | $104.35M |
| 7 | Ameriprise Financial Inc | 858.3K | $88.15M |
| 8 | American Century Companies Inc | 818.0K | $84.01M |
| 9 | Alyeska Investment Group, L.P. | 734.8K | $75.46M |
| 10 | Chevy Chase Trust Holdings, LLC | 728.4K | $74.81M |