Impinj Inc
PI- Exchange
- Nasdaq
- Industry
- Electronic Components, NEC
- SEC CIK
- 0001114995
In the last 90 days, Impinj Inc insiders filed 0 open-market purchases and 4 sales; 319 institutions reported holding it in 13F filings for Q2 2026, worth $4.69B in total; Soros Fund Management is the only superinvestor holding it.
Holders of 5% or more of PI
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Impinj Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 14.70%4.50M shares | – | Oct 7, 20242 filings | Oct 27, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 7.15%2.16M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| State Street Corp | 13G | 5.60%1.70M shares | New | Aug 7, 20261 filing | Aug 7, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
39 Schedule 13D and 13G filings on Impinj Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 27, 20265:25 PM ET | BlackRock, Inc. | 13G/A | 14.70%4.50M shares | – | Sep 30, 2026 | SEC |
| Aug 7, 20269:52 AM ET | State Street Corp | 13G | 5.60%1.70M shares | New | Jun 30, 2026 | SEC |
| May 14, 202612:52 PM ET | Capital International Investors | 13G/A | 4.50%1.35M shares | −0.90 ppfrom 5.40%Below 5% | Mar 31, 2026 | SEC |
| Apr 29, 20261:49 PM ET | Vanguard Portfolio Management LLC | 13G | 7.15%2.16M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 20269:53 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Dec 17, 20255:02 PM ET | Sylebra Capital LLCand 3 others | 13D/A | 3.76%1.13M shares | −1.24 ppfrom 5.00%Below 5% | Dec 15, 2025 | SEC |
| Dec 5, 20255:06 PM ET | Sylebra Capital LLCand 3 others | 13D/A | 5.00%1.50M shares | −1.29 ppfrom 6.29% | Dec 3, 2025 | SEC |
| Sep 12, 20254:03 PM ET | Sylebra Capital LLCand 3 others | 13D/A | 6.29%1.83M shares | – | Sep 10, 2025 | SEC |
| Feb 14, 20251:32 PM ET | Capital International Investors | 13G | 5.40%1.53M shares | New | Dec 31, 2024 | SEC |
| Nov 12, 2024 | Sylebra Capital LLC | 13D/AOld format | – | – | – | SEC |
| Nov 12, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2024 | Sylebra Capital LLC | 13D/AOld format | – | – | – | SEC |
| Nov 6, 2024 | Sylebra Capital LLC | 13D/AOld format | – | – | – | SEC |
| Nov 4, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Oct 7, 2024 | BlackRock, Inc. | 13G/AOld format | – | – | – | SEC |
| Jul 10, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jun 10, 2024 | Sylebra Capital LLC | 13DOld format | – | New | – | SEC |
| Feb 14, 2024 | Diorio Chris PH.D. | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 2024 | Invesco Ltd. | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20244:23 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 17, 2023 | Sylebra Capital Ltd | 13D/AOld format | – | – | – | SEC |
| Aug 25, 2023 | Sylebra Capital Ltd | 13D/AOld format | – | – | – | SEC |
| Aug 18, 2023 | Sylebra Capital Ltd | 13D/AOld format | – | – | – | SEC |
| Jul 10, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jun 12, 2023 | FMR LLC | 13GOld format | – | New | – | SEC |
| Feb 14, 2023 | Gilder Gagnon Howe & Co LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Invesco Ltd. | 13GOld format | – | New | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13GOld format | – | New | – | SEC |
| Jan 31, 20235:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 25, 2022 | Sylebra Capital Ltd | 13D/AOld format | – | – | – | SEC |
| Nov 18, 2022 | Sylebra Capital Ltd | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Gilder Gagnon Howe & Co LLC | 13GOld format | – | New | – | SEC |
| Feb 8, 20225:12 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2022 | Diorio Chris PH.D. | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Diorio Chris PH.D. | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Toronado Fund, L.P. | 13G/AOld format | – | – | – | SEC |
| Jan 29, 20219:56 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
231 notices from officers, directors and other affiliates planning to sell Impinj Inc shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Oct 29, 20264:17 PM ET | Rao MeeraDirector | 1.73K | $348.6K | Oct 29, 202610b5-1 | Charles Schwab & Co., Inc. | SEC |
| Sep 15, 20264:28 PM ET | Washington MironDirector | 800 | $138.6K | Sep 15, 2026 | Charles Schwab & Co., Inc. | SEC |
| Aug 10, 20265:34 PM ET | Baker CaryOfficer | 10.3K | $1.91M | Aug 10, 202610b5-1 | Charles Schwab & Co., Inc. | SEC |
| Dec 15, 20258:55 PM ET | Sylebra Capital LLCSee Remarks | 134.6K | $20.2M | Dec 15, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 12, 20258:41 PM ET | Sylebra Capital LLCSee Remarks | 50.6K | $7.42M | Dec 12, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 11, 20258:08 PM ET | Sylebra Capital LLCSee Remarks | 95.3K | $14.6M | Dec 11, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 10, 20258:42 PM ET | Sylebra Capital LLCSee Remarks | 84.6K | $13.2M | Dec 10, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 9, 20259:01 PM ET | Sylebra Capital LLCSee Remarks | 40 | $6.40K | Dec 9, 2025 | Goldman Sachs & Co. LLC | SEC |
| Dec 8, 20258:33 PM ET | Sylebra Capital LLCSee Remarks | 2.49K | $400.8K | Dec 8, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 5, 20258:30 PM ET | Sylebra Capital LLCSee Remarks | 1.37K | $221.1K | Dec 5, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 4, 20258:49 PM ET | Sylebra Capital LLCSee Remarks | 3.17K | $508.6K | Dec 4, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 3, 20258:46 PM ET | Sylebra Capital LLCSee Remarks | 41.2K | $6.92M | Dec 3, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 2, 20258:46 PM ET | Sylebra Capital LLCSee Remarks | 41.9K | $7.04M | Dec 2, 2025 | Morgan Stanley & Co. LLC | SEC |
| Dec 1, 20259:02 PM ET | Sylebra Capital LLCSee Remarks | 31.1K | $5.19M | Dec 1, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 28, 20258:22 PM ET | Sylebra Capital LLCSee Remarks | 22.3K | $3.85M | Nov 28, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 26, 20258:24 PM ET | Sylebra Capital LLCSee Remarks | 34.6K | $5.94M | Nov 26, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 25, 20258:43 PM ET | Sylebra Capital LLCSee Remarks | 46.1K | $7.73M | Nov 25, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 24, 20257:09 PM ET | Sylebra Capital LLCSee Remarks | 32.0K | $5.09M | Nov 24, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 21, 20256:09 PM ET | Sylebra Capital LLCSee Remarks | 3.05K | $472.4K | Nov 21, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 20, 20255:22 PM ET | Sylebra Capital LLCSee Remarks | 8.08K | $1.26M | Nov 20, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 12, 20258:24 PM ET | Sylebra Capital LLCSee Remarks | 33.8K | $5.26M | Nov 11, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 7, 20258:29 PM ET | Sylebra Capital LLCDirector · See Remarks | 6.25K | $1.01M | Nov 7, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 7, 20254:13 PM ET | Washington MironDirector | 342 | $54.4K | Nov 7, 2025 | Charles Schwab & Co., Inc. | SEC |
| Nov 6, 20258:02 PM ET | Sylebra Capital LLCDirector · See explanatory notes under section of Remarks | 23.2K | $3.98M | Nov 6, 2025 | Morgan Stanley & Co. LLC | SEC |
| Nov 3, 20258:07 PM ET | Sylebra Capital LLCDirector | 1.51K | $305.6K | Nov 3, 2025 | Morgan Stanley & Co. LLC | SEC |
Showing the latest 25. See the PI notices from the last 12 months