IMPINJ INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for IMPINJ INC (PI), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are PI insiders buying or selling?
In the last 12 months, IMPINJ INC insiders reported 1 open-market purchase ($3.4M) and 25 sales ($176.0M) — net selling of $172.6M. Since January 2018, Trabud has recorded 392 Form 4 filings for PI: 30 buys ($146.1M) and 362 sells ($893.1M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $3.4M by SYLEBRA CAPITAL LLC (Director) on May 12, 2026. SEC ↗
- The most recent open-market purchase was reported on May 12, 2026 (5 months ago).
Key Statistics (January 2018 – Sep 21, 2026)
Total Form 4 filings
392
SEC EDGAR
Insider filers
17
Insider buys (30)
$146.1M
Insider sells (362)
$893.1M
Insider sentiment
Net sellingNet insider flow of $746.9M in net selling since January 2018, and $172.6M in net selling over the last 12 months.
Recent PI insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Sep 21, 2026 | Cary Baker | CHIEF FINANCIAL OFFICER | Sale | 8.9K | $185.00 | $1.6M | SEC ↗ |
| Sep 16, 2026 | Miron Washington | Director | Sale | 800 | $173.26 | $138.6K | SEC ↗ |
| Aug 12, 2026 | Cary Baker | CHIEF FINANCIAL OFFICER | Sale | 1.4K | $185.00 | $264.4K | SEC ↗ |
| Jun 10, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 64.6K | $128.47 | $8.3M | SEC ↗ |
| Jun 10, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 57.6K | $128.61 | $7.4M | SEC ↗ |
| Jun 9, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 47.5K | $124.06 | $5.9M | SEC ↗ |
| Jun 8, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 33.4K | $136.84 | $4.6M | SEC ↗ |
| Jun 4, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 45.0K | $141.87 | $6.4M | SEC ↗ |
| Jun 2, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 55.7K | $149.94 | $8.3M | SEC ↗ |
| May 12, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 73.8K | $153.21 | $11.3M | SEC ↗ |
| May 12, 2026 | SYLEBRA CAPITAL LLC | Director | Purchase | 22.0K | $154.33 | $3.4M | SEC ↗ |
| May 11, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 36.2K | $152.73 | $5.5M | SEC ↗ |
| May 11, 2026 | SYLEBRA CAPITAL LLC | Director | Sale | 36.2K | $152.73 | $5.5M | SEC ↗ |
| Dec 16, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 280.5K | $150.54 | $42.2M | SEC ↗ |
| Dec 11, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 87.1K | $155.64 | $13.6M | SEC ↗ |
| Dec 6, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 45.8K | $167.25 | $7.7M | SEC ↗ |
| Dec 4, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 72.9K | $167.71 | $12.2M | SEC ↗ |
| Dec 2, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 56.9K | $172.12 | $9.8M | SEC ↗ |
| Nov 27, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 78.1K | $164.33 | $12.8M | SEC ↗ |
| Nov 25, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 11.1K | $155.99 | $1.7M | SEC ↗ |
| Nov 15, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 3.8K | $156.30 | $589.6K | SEC ↗ |
| Nov 14, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 30.0K | $155.63 | $4.7M | SEC ↗ |
| Nov 13, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 6.2K | $162.16 | $1.0M | SEC ↗ |
| Nov 11, 2025 | SYLEBRA CAPITAL LLC | Other | Sale | 23.2K | $171.95 | $4.0M | SEC ↗ |
| Nov 7, 2025 | Miron Washington | Director | Sale | 342 | $158.94 | $54.4K | SEC ↗ |
Showing the 25 most recent of 392 Form 4 filings for IMPINJ INC.
Most active PI insiders
- Chris Ph.D. Diorio90 filings
- Jeffrey Dossett83 filings
- Cary Baker62 filings
- Hussein Mecklai47 filings
- SYLEBRA CAPITAL LLC30 filings
Ask anything about PI insider activity
Use Trabud's AI agent to query IMPINJ INC's Form 4 history in plain English — "Show me PI CEO purchases this year" or compare it against any other ticker.
Open the AI agentPI insider trading FAQ
Are IMPINJ INC insiders buying or selling?
In the last 12 months, IMPINJ INC insiders reported 1 open-market purchase ($3.4M) and 25 sales ($176.0M) — net selling of $172.6M. Since January 2018, Trabud has recorded 392 Form 4 filings for PI: 30 buys ($146.1M) and 362 sells ($893.1M). Over the full record that is net selling of $746.9M.
How many insiders trade PI stock?
17 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for IMPINJ INC. The most recent filing was accepted on Sep 21, 2026.
Where does Trabud get PI insider trading data?
All PI insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.