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Impinj, Inc.

TechnologyRussell 2000

Impinj, Inc. insider trading

Impinj, Inc. files with the SEC as a Electronic Components, NEC company headquartered in Seattle, WA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.

From SEC filings

Recent PI insider transactions

3 insiders traded PI on the open market between May 07, 2026 and Sep 21, 2026 — 15 sales worth $44.1M, of which 2 were pre-scheduled under a 10b5-1 plan.

Bought
—
Sold
$44.1M

2 of 15 on a 10b5-1 plan

Net
−$44.1M
Insiders
3

Open-market purchases (code P) and sales (code S) from Impinj, Inc.'s own SEC Form 4 filings. Grants and option exercises are excluded — they are compensation, not decisions. Share counts are derived from the reported value and price. Verify any figure against the original filing before acting on it; this is monitoring, not advice.

Filing history last read from EDGAR on Sep 23, 2026. The live dashboard shows new filings the moment they clear.

Every PI Form 4 on SEC.gov

SEC Form 4 data, Q3 2024 to Q2 2026

PI insider trading by quarter

Between Jul 01, 2024 and Jun 30, 2026, 9 insiders traded PI on the open market: 0 purchases and 231 sales worth $477M, 79 of the sales pre-scheduled under a 10b5-1 plan. In the last four quarters alone: 0 purchases and 78 sales ($228.7M), by 4 insiders.

QuarterBoughtSold
Q2 2026—−$51.9M17 sales
Q1 2026——
Q4 2025—−$110.6M23 sales
Q3 2025—−$66.2M38 sales · 37 on a plan
Q2 2025——
Q1 2025—−$1.9M24 sales
Q4 2024—−$237.3M72 sales · 11 on a plan
Q3 2024—−$9M57 sales · 31 on a plan
Largest sale
−$58.9M of PI by Sylebra Capital LLC (See Remarks) on Sep 10, 2025.

Open-market transactions through Jun 30, 2026most recent first

  • Sylebra Capital LLC

    Director

    −$2.4M

    Jun 09, 2026

    19,105 sh · $127.36

  • Sylebra Capital LLC

    Director

    −$1.5M

    Jun 09, 2026

    12,105 sh · $127.36

  • Sylebra Capital LLC

    Director

    −$4.3M

    Jun 08, 2026

    33,000 sh · $130.07

  • Sylebra Capital LLC

    Director

    −$1.6M

    Jun 08, 2026

    12,528 sh · $125.97

  • Sylebra Capital LLC

    Director

    −$4.4M

    Jun 05, 2026

    35,877 sh · $122.50

  • Sylebra Capital LLC

    Director

    −$1.5M

    Jun 05, 2026

    11,602 sh · $128.87

  • Sylebra Capital LLC

    Director

    −$4.6M

    Jun 04, 2026

    33,412 sh · $136.84

  • Sylebra Capital LLC

    Director

    −$878.6K

    Jun 03, 2026

    6,313 sh · $139.17

  • Sylebra Capital LLC

    Director

    −$5.5M

    Jun 02, 2026

    38,724 sh · $142.31

  • Sylebra Capital LLC

    Director

    −$1M

    Jun 01, 2026

    7,163 sh · $144.29

  • Sylebra Capital LLC

    Director

    −$7.3M

    May 29, 2026

    48,504 sh · $150.78

  • Sylebra Capital LLC

    Director

    −$3.7M

    May 11, 2026

    24,126 sh · $154.46

  • Sylebra Capital LLC

    Director

    −$2M

    May 11, 2026

    12,706 sh · $154.46

  • Sylebra Capital LLC

    Director

    −$1.4M

    May 08, 2026

    9,522 sh · $149.97

  • Sylebra Capital LLC

    Director

    −$236.1K

    May 08, 2026

    1,560 sh · $151.32

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

Impinj, Inc. company record

SEC industry classification
Electronic Components, NEC
Headquarters
Seattle, WA
Incorporated in
DE
Listed on
Nasdaq
SEC Central Index Key
0001114995

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

After insiders bought PI

What the stock actually did in the 90 days following each open-market purchase

Don't check PI — let it ping you

Get told the moment an insider moves on PI

Pro watches Impinj, Inc. for you and sends a Telegram ping within moments of a Form 4 clearing EDGAR — a C-suite open-market buy, a cluster, a 10b5-1 regime break — long before it reaches the press. Add PI to a watchlist, see each mover's benchmark-measured track record and which legendary funds hold it, and read the full filing history instead of the last 72 hours.

Track PI on the live dashboardFilings on SEC.gov

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

How to read PI insider activity

Open-market purchase (code P)
An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
Grants and option exercises (codes A, M)
Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
Cluster buy
Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

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This week on the tape: who actually chose to sellThe weekly split of scheduled 10b5-1 selling vs deliberate sales, with the deciders named.

Questions

Are PI insiders buying or selling?
Between May 07, 2026 and Sep 21, 2026, 3 Impinj, Inc. insiders made no open-market purchases and 15 sales worth $44.1M, a net sale of $44.1M. 2 of the sales were pre-scheduled under a Rule 10b5-1 plan.
How much PI stock have insiders bought and sold in the last two years?
Between Jul 01, 2024 and Jun 30, 2026, 9 Impinj, Inc. insiders made no open-market purchases and 231 sales worth $477M. 79 of the sales were pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: no purchases and 78 sales ($228.7M). The largest sale was Sylebra Capital LLC selling $58.9M on Sep 10, 2025.
What was the largest recent PI insider trade?
Sylebra Capital LLC (Director) sold $7.3M of PI stock on May 29, 2026 at about $150.78 a share.
When did an insider last buy PI shares?
No open-market purchase by a Impinj, Inc. insider appears in the filings from May 07, 2026 to Sep 21, 2026 — every recorded open-market transaction in that period was a sale.
Where does PI insider trading data come from?
From the Form 4 filings Impinj, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.

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