Impinj Inc
Ownership
Ownership Structure
Who owns Impinj Inc (PI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.9% of the shares are freely tradable; institutional investors hold 107.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.93 | 4,562,799 | +6.6 | 06/30/2026 |
| BlackRock Inc | 14.56 | 4,449,389 | +3.2 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 7.18 | 2,194,236 | +2.5 | 06/30/2026 |
| State Street Corp | 5.57 | 1,700,585 | +14.5 | 06/30/2026 |
| Capital Research & Mgmt Co - Division 3 | 4.72 | 1,443,452 | +6.7 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.20 | 1,282,667 | +1.3 | 06/30/2026 |
| Capital World Investors | 3.68 | 1,124,066 | +10.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| American Funds SMALLCAP World A | 7.97 | 2,436,685 | +1.0 | 09/30/2026 |
| iShares Core S&P Small-Cap ETF | 5.66 | 1,728,850 | +0.0 | 09/30/2026 |
| Fidelity Select Semiconductors | 3.67 | 1,122,366 | +0.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | 346,265 | 64,439,917 $ | Oct 12, 2026 | direct |
| Baker Cary | CHIEF FINANCIAL OFFICER | 81,039 | 15,081,358 $ | Sep 23, 2026 | direct |
| Rao Meera | Director | 9,593 | 1,785,257 $ | Oct 29, 2026 | direct |
| Washington Miron | Director | 4,354 | 810,279 $ | Sep 15, 2026 | direct |
| Valdez Arthur L Jr | Director | 1,220 | 227,042 $ | Oct 20, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 29, 2026 | Rao Meera | Director | Sell | 1,729 | 201.60 | 348,566 |
| Oct 20, 2026 | Valdez Arthur L Jr | Director | Other | 1,220 | 0.00 | – |
| Oct 12, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 10,000 | 0.00 | – |
| Sep 23, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Other | 424 | 177.20 | 75,133 |
| Sep 23, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Other | 596 | 0.00 | – |
| Sep 23, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Other | 479 | 0.00 | – |
| Sep 23, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 1,197 | 177.20 | 212,108 |
| Sep 23, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 1,817 | 0.00 | – |
| Sep 23, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 1,224 | 0.00 | – |
| Sep 21, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Sell | 8,892 | 185.00 | 1,645,020 |
| Sep 15, 2026 | Washington Miron | Director | Sell | 800 | 173.26 | 138,608 |
| Sep 14, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 10,000 | 0.00 | – |
| Aug 20, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Other | 685 | 159.73 | 109,415 |
| Aug 20, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Other | 1,739 | 0.00 | – |
| Aug 20, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 1,477 | 159.73 | 235,921 |
| Aug 20, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 3,753 | 0.00 | – |
| Aug 17, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 10,000 | 0.00 | – |
| Aug 10, 2026 | Baker Cary | CHIEF FINANCIAL OFFICER | Sell | 1,429 | 185.00 | 264,365 |
| Jul 13, 2026 | Diorio Chris Ph.d. | CHIEF EXECUTIVE OFFICER | Other | 10,000 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.