Transaction · 0001677721-26-000014

DIORIO CHRIS PH.D.

DIORIO CHRIS PH.D., CEO, reported a transaction classified as withholding at IMPINJ INC involving 1477.000000 shares for an estimated $235921.21. Reported holdings after the transaction were 364421.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

withholdingSEC transaction code FCEO
PIIMPINJ INC
Filing timeAug 21
Trade dateAug 20, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$165.54
Pre-filing
1mo ago -17.8%1w ago +8.0%1d ago -0.3%
Returns since
7d +2.7%30d +2.7%90d +2.7%180d +2.7%1y +2.7%

PI price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
PI since 2026-08-21Filed 14 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
withholding
Code F
Identifier
0001677721-26-000014
Common Stock
Transaction date
Aug 20, 2026
Filed Aug 21, 2026, 11:08 PM · 1d delay
Shares
1.47k sh
$15.9k per share
Estimated value
-$23.5M
Computed from shares × price
Holdings after
364k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Direct Ownership
-12score
Filing-only score

-12

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.

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 August 20, 2025, the reporting person was granted 15,015 RSUs. One-fourth of these vested on August 20, 2026.

Original filing · 0001677721-26-000014
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Same reporting owner
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