Transaction · 0001677721-26-000018

Diorio Chris Ph.D.

DIORIO CHRIS PH.D., CEO, reported a transaction classified as exercise at IMPINJ INC involving 1817.000000 shares for an estimated $0.00. Reported holdings after the transaction were 10904.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

exerciseSEC transaction code MCEO
PIIMPINJ INC
Trade date
Sep 23, 2026
Filing date
Sep 24, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded1.81k$0.00 per share
Holdings after10.9kDirect
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

PI price since this filing

Daily closing prices, with the filing date and available return windows
PI · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -8.8%1w ago +0.6%1d ago +2.9%
Returns since7d +4.1%30d90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0001677721-26-000018
Restricted Stock Units
Transaction date
Sep 23, 2026
Filed Sep 24, 2026, 10:07 PM · 1d delay
Shares
1,817 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
10,904 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership
Filing-only score

-6 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 1

    Filing reported within two business days of the transaction.
  • derivative_transaction-16 points

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CHIEF EXECUTIVE OFFICER

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    In an exempt disposition to the Issuer under Rule 16b-3(e), the Reporting Person remitted shares to the Issuer in connection with the satisfaction of tax withholding obligations arising out of the ves…

  2. F2

    Each RSU represents a contingent right to receive one share of Impinj common stock.

  3. F3

    On March 23, 2023, the reporting person was granted 19,580 RSUs. One-sixteenth of these vested on September 23, 2026.

  4. F4

    On March 23, 2024, the reporting person was granted 29,075 RSUs. One-sixteenth of these vested on September 23, 2026.

Original filing · 0001677721-26-000018
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