Greedy Insider
IMPINJ INC (PI) Insider Trades and Scores
IMPINJ INC (PI) insider trades: since Nov 20, 2025, Greedy Insider recorded 1 open-market buys and 49 sales on Form 4 from 4 insiders. The strongest recent filing scored 88 (Strong).
Who bought and who sold
Across the last 50 scoreable Form 4 transactions in PI, 1 were open-market purchases and 49 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Baker Cary | CFO | Sell | 424.0 | 75132.8 | 2026-09-23 | 62 | View |
| DIORIO CHRIS PH.D. | CEO | Sell | 1197.0 | 212108.4 | 2026-09-23 | 62 | View |
| Baker Cary | CFO | Sell | 8892.0 | 1645020.0 | 2026-09-21 | 88 | View |
| WASHINGTON MIRON | Director | Sell | 800.0 | 138608.0 | 2026-09-15 | 67 | View |
| Baker Cary | CFO | Sell | 685.0 | 109415.05 | 2026-08-20 | 64 | View |
| DIORIO CHRIS PH.D. | CEO | Sell | 1477.0 | 235921.2 | 2026-08-20 | 62 | View |
| Baker Cary | CFO | Sell | 1429.0 | 264365.0 | 2026-08-10 | 70 | View |
| DIORIO CHRIS PH.D. | CEO | Sell | 1197.0 | 149888.34 | 2026-06-23 | 62 | View |
| Baker Cary | CFO | Sell | 424.0 | 53093.28 | 2026-06-23 | 62 | View |
| SYLEBRA CAPITAL LLC | Director | Sell | 12105.0 | 1541665.0 | 2026-06-09 | 54 | View |
The strongest recent filing
Baker Cary (CFO) sold 8,892 shares of IMPINJ INC on Sep 21, 2026, a filing that scored 88 (Strong). It scored Strong because a senior insider was trading and it was direct personal ownership. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 3 insiders (Baker Cary, DIORIO CHRIS PH.D., WASHINGTON MIRON) traded PI the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with IMPINJ INC's own history
Open-market buys make up 2% of the 50 scoreable PI transactions on record between Nov 20, 2025 and Sep 23, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 50
- Open-market buys: 1
- Sales: 49
- Distinct insiders: 4
- Strongest recent Greediness Score: 88 (Strong)
Primary sources
Related
- Strongest filing
- PI in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.