PI
IMPINJ INC · Technology · Market cap $5.0B
Insiders sold $2.0M net in the last 90 days ·2 sellers, 0 buyers· 2 of 3 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 21, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$164.6M
reported sales (SEC code S)
Unique Insiders
3
in the rolling window
Latest filing
Oct 21, 2026
Baker Cary
IMPINJ INC (PI) has 54 SEC Form 4 filings (104 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Oct 21, 2026.
Inside the rolling window, 3 insiders at IMPINJ INC reported no open-market purchases and 37 open-market sales totaling $164.6M. The most active filer is Director SYLEBRA CAPITAL LLC with 33 filings. Insiders have net sold $53.9M over the trailing 6 months. The most recent open-market filing is a sale of 8,892 shares by CHIEF FINANCIAL OFFICER Baker Cary, dated Sep 21, 2026, worth $1.6M.
- Industry:Semiconductors
- CEO:Chris Diorio
- Employees:457
- HQ:Seattle, WA, US
- IPO:2016-07-21
| Source | |||||||
|---|---|---|---|---|---|---|---|
| CHIEF FINANCIAL OFFICER | Sale | 8,892 | $1.6M | Sep 21 | -11.6% | SEC ↗ | |
WASHINGTON MIRONFirst in 10 months | Director | Sale | 800 | $139K | Sep 16 | -8.4% | SEC ↗ |
Baker CaryFirst filing | CHIEF FINANCIAL OFFICER | Sale | 1,429 | $264K | Aug 12 | -9.4% | SEC ↗ |
| Director | Sale | 45,528 | $5.9M | Jun 10 | +32.6% | SEC ↗ | |
| Director | Sale | 31,210 | $4.0M | Jun 10 | +32.6% | SEC ↗ | |
| Director | Sale | 47,479 | $5.9M | Jun 9 | +30.1% | SEC ↗ | |
| Director | Sale | 33,412 | $4.6M | Jun 8 | — | SEC ↗ | |
| Director | Sale | 38,724 | $5.5M | Jun 4 | — | SEC ↗ | |
| Director | Sale | 6,313 | $879K | Jun 4 | — | SEC ↗ | |
| Director | Sale | 48,504 | $7.3M | Jun 2 | — | SEC ↗ | |
| Director | Sale | 7,163 | $1.0M | Jun 2 | — | SEC ↗ | |
| Director | Sale | 36,978 | $5.6M | May 12 | — | SEC ↗ | |
| Director | Sale | 36,832 | $5.7M | May 12 | — | SEC ↗ | |
| Director | Sale | 36,171 | $5.5M | May 11 | — | SEC ↗ | |
| See Footnote | Sale | 95,345 | $14.6M | Dec 15 | — | SEC ↗ | |
| See Footnote | Sale | 50,573 | $7.4M | Dec 15 | — | SEC ↗ | |
| See Footnote | Sale | 134,629 | $20.2M | Dec 15 | — | SEC ↗ | |
| See Footnote | Sale | 2,494 | $401K | Dec 10 | — | SEC ↗ | |
| See Footnote | Sale | 40 | $6K | Dec 10 | — | SEC ↗ | |
| See Footnote | Sale | 84,604 | $13.2M | Dec 10 | — | SEC ↗ | |
| See Footnote | Sale | 41,221 | $6.9M | Dec 5 | — | SEC ↗ | |
| See Footnote | Sale | 3,167 | $509K | Dec 5 | — | SEC ↗ | |
| See Footnote | Sale | 1,373 | $221K | Dec 5 | — | SEC ↗ | |
| See Footnote | Sale | 31,058 | $5.2M | Dec 3 | — | SEC ↗ | |
| See Footnote | Sale | 41,874 | $7.0M | Dec 3 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading PI 8 all-time
- RRep. Marjorie Taylor GreenePurchase$1,001 - $15,0002025-05-14
- RRep. Marjorie Taylor GreenePurchase$1,001 - $15,0002025-05-05
- RRep. Marjorie Taylor GreenePurchase$1,001 - $15,0002025-04-04
- RRep. Marjorie Taylor GreenePurchase$1,001 - $15,0002025-03-03
- DRep. Donald Sternoff BeyerOther$15,001 - $50,0002022-02-28
- DRep. Donald Sternoff BeyerPurchase$1,001 - $15,0002021-10-04
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does PI have?
IMPINJ INC (PI) has 54 SEC Form 4 filings (104 transaction rows) in the rolling 365-day window, disclosed by 3 distinct insiders. Most recent filing: Oct 21, 2026.
When was the most recent SEC Form 4 filing for PI?
The most recent Form 4 filing for PI on Tracefour is dated Oct 21, 2026.
Who is the most active insider at PI?
The most active SEC Form 4 filer at PI in the rolling window is Director SYLEBRA CAPITAL LLC, with 33 filings.
What is the net insider flow at PI over the last 6 months?
Over the trailing 180 days, insiders at PI have net sold $53.9M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at PI in the current window?
Inside the rolling window, insiders at PI bought $0 and sold $164.6M based on SEC Form 4 filings.
Can I get alerts for PI insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at IMPINJ INC (PI). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
IMPINJ INC is in the Technology sector.