Impinj Inc operates a platform that enables wireless connectivity to everyday items by delivering each item's identity, location, and authenticity to business and consumer applications. Its platform includes endpoint integrated circuits (ICs) product, a miniature radios-on-a-chip, which attach to and identify their host items; and connectivity layer that comprises readers, gateways, and reader ICs to wirelessly identify, locate, authenticate, and engage endpoints via RAIN, as well as provide power to and communicate bidirectionally with endpoint ICs. Geographically, the company has a business presence in the Americas, Asia Pacific, Europe, Middle East and Africa, of which key revenue is derived from the operations in the Asia Pacific region.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 11 | 240,657 | $32.87M |
| Option exercise | 12 | 19,216 | |
| Tax withholding / forfeiture | 4 | 3,783 | |
| Bona-fide gift | 3 | 30,000 | |
| Other acquisition / disposition | 2 | 360,000 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
87 Form 4 filings on record, the earliest from Oct 15, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Option exercise | Common Stock | 1,739 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 685 | $159.73 | $109K | ||
| Option exercise | Restricted Stock Units | 1,739 | $0.00 | - | ||
| Option exercise | Common Stock | 3,753 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 1,477 | $159.73 | $236K | ||
| Option exercise | Restricted Stock Units | 3,753 | $0.00 | - | ||
| Gift | Common Stock | 10,000 | $0.00 | - | ||
| Open-market sale | Common Stock | 1,429 | $185.00 | $264K | ||
| Gift | Common Stock | 10,000 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 479 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 597 | $0.00 | - | ||
| Option exercise | Common Stock | 479 | $0.00 | - | ||
| Option exercise | Common Stock | 597 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 424 | $125.22 | $53K | ||
| Option exercise | Restricted Stock Units | 1,817 | $0.00 | - | ||
| Option exercise | Common Stock | 1,223 | $0.00 | - | ||
| Option exercise | Common Stock | 1,817 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 1,197 | $125.22 | $150K | ||
| Option exercise | Restricted Stock Units | 1,223 | $0.00 | - | ||
| Gift | Common Stock | 10,000 | $0.00 | - | ||
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 12,528 | $125.97 | $1.58M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 12,105 | $127.36 | $1.54M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 33,000 | $130.07 | $4.29M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 11,602 | $128.87 | $1.50M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 35,877 | $122.50 | $4.39M | |
| Other | Common Stock | 180,000 | $156.68 | $28.20M | ||
| Other | Common Stock | 180,000 | $156.68 | $28.20M | ||
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 33,412 | $136.84 | $4.57M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 38,724 | $142.31 | $5.51M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 6,313 | $139.17 | $879K | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 48,504 | $150.78 | $7.31M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 7,163 | $144.29 | $1.03M | |
| Daniel Patrick Gibson | Option exercise | Common Stock | 3,114 | $0.00 | - | |
| Daniel Patrick Gibson | Option exercise | Restricted Stock Units | 3,114 | $0.00 | - | |
| Daniel Patrick Gibson | Grant or award | Restricted Stock Units | 1,896 | $0.00 | - | |
| Arthur L. Valdez Jr. | Grant or award | Restricted Stock Units | 1,896 | $0.00 | - | |
| Miron Washington | Option exercise | Common Stock | 3,114 | $0.00 | - | |
| Miron Washington | Option exercise | Restricted Stock Units | 3,114 | $0.00 | - | |
| Miron Washington | Grant or award | Restricted Stock Units | 1,896 | $0.00 | - | |
| Umesh Padval | Option exercise | Common Stock | 3,114 | $0.00 | - | |
| Umesh Padval | Option exercise | Restricted Stock Units | 3,114 | $0.00 | - | |
| Umesh Padval | Grant or award | Restricted Stock Units | 1,896 | $0.00 | - | |
| Option exercise | Common Stock | 3,425 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 3,425 | $0.00 | - | ||
| Grant or award | Restricted Stock Units | 2,085 | $0.00 | - | ||
| Meera Rao | Option exercise | Common Stock | 3,114 | $0.00 | - | |
| Meera Rao | Option exercise | Restricted Stock Units | 3,114 | $0.00 | - | |
| Meera Rao | Grant or award | Restricted Stock Units | 1,896 | $0.00 | - | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 25,896 | $152.73 | $3.96M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 1,560 | $151.32 | $236K | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 9,522 | $149.97 | $1.43M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 24,126 | $154.46 | $3.73M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 12,706 | $154.46 | $1.96M | |
| SYLEBRA CAPITAL LLC - Director | Open-market sale | Common Stock | 36,171 | $152.73 | $5.52M | |
| Option exercise | Common Stock | 782 | $0.00 | - | ||
| Option exercise | Common Stock | 479 | $0.00 | - | ||
| Option exercise | Common Stock | 597 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 732 | $101.17 | $74K | ||
| Option exercise | Restricted Stock Units | 782 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 479 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 597 | $0.00 | - | ||
| Grant or award | Restricted Stock Units | 7,627 | $0.00 | - | ||
| Option exercise | Common Stock | 2,594 | $0.00 | - | ||
| Option exercise | Common Stock | 1,224 | $0.00 | - | ||
| Option exercise | Common Stock | 1,817 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 2,218 | $101.17 | $224K | ||
| Option exercise | Restricted Stock Units | 2,594 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 1,224 | $0.00 | - | ||
| Option exercise | Restricted Stock Units | 1,817 | $0.00 | - | ||
| Grant or award | Restricted Stock Units | 24,806 | $0.00 | - | ||
| Grant or award | Common Stock | 8,508 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 2,234 | $127.92 | $286K | ||
| Grant or award | Common Stock | 21,734 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 7,435 | $127.92 | $951K | ||
| Gift | Common Stock | 1,836 | $0.00 | - | ||
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 41,221 | $167.97 | $6.92M | |
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 3,167 | $160.59 | $509K | |
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 1,373 | $161.04 | $221K | |
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 31,058 | $167.02 | $5.19M | |
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 41,874 | $168.23 | $7.04M | |
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 34,556 | $171.80 | $5.94M | |
| SYLEBRA CAPITAL LLC | Open-market sale | Common Stock | 22,297 | $172.62 | $3.85M |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Baker Cary | Officer | 10,321 | $1.91M | View on EDGAR |
IMPINJ INC (PI) had 14 insider filings in the last 90 days, with the most recent on 2026-08-21. The full record for PI runs to 87 Form 4 filings, the earliest from 2024-10-15. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of PI were filed in the last 90 days.
11 insider sales of PI were filed in the last 90 days, totaling $32.87M.
This page tracks PI Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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