# EDGAR Filing Document

**Accession Number:** 0001114995
**File Stem:** 0001193125-26-159051
**Filing Date:** 2026-4
**Character Count:** 1950
**Document Hash:** dabeb44a40a8a67e005f460c764fd060
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-159051.hdr.sgml**: 20260416

**ACCESSION NUMBER**: 0001193125-26-159051

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260416

**DATE AS OF CHANGE**: 20260416

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** IMPINJ INC
- **CENTRAL INDEX KEY:** 0001114995
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRONIC COMPONENTS, NEC [3679]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 912041398
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-37824
- **FILM NUMBER:** 26867800

**BUSINESS ADDRESS:**
- **STREET 1:** 400 FAIRVIEW AVENUE NORTH
- **STREET 2:** SUITE 1200
- **CITY:** SEATTLE
- **STATE:** WA
- **ZIP:** 98109
- **BUSINESS PHONE:** 206-517-5300

**MAIL ADDRESS:**
- **STREET 1:** 400 FAIRVIEW AVENUE NORTH
- **STREET 2:** SUITE 1200
- **CITY:** SEATTLE
- **STATE:** WA
- **ZIP:** 98109

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 14A INFORMATION**

**PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE**

**SECURITIES EXCHANGE ACT OF 1934**

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6**(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to §240.14a-12

**IMPINJ, INC.**

**(Name of Registrant as Specified In Its Charter)**

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required.

☐ Fee previously paid with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

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