Impinj Insider Cary Baker Reports Ownership Change

TL;DR

**Impinj insider Cary Baker just reported a change in ownership, keep an eye out for details on what they did.**

AI Summary

This Form 4 filing indicates that Cary Baker, an insider at Impinj Inc., reported a change in beneficial ownership of securities on March 23, 2026. While the filing details the reporting of this change, it does not specify the nature of the transaction (buy or sell) or the number of shares involved. This matters to investors because insider transactions can signal management's confidence (or lack thereof) in the company's future, potentially influencing stock price movements.

Why It Matters

Insider transactions can provide valuable insights into how company executives view the stock's future prospects, which can influence investor sentiment and stock performance.

Risk Assessment

Risk Level: medium — The risk is medium because the filing indicates an insider transaction, but without details on the type or size of the transaction, its impact is currently unknown.

Analyst Insight

A smart investor would monitor subsequent filings or company announcements for more specific details about Cary Baker's transaction (buy or sell, quantity) to assess its potential impact on Impinj Inc.'s stock.

Key Numbers

• 2026-03-23 — Period of Report (The date the reported transaction occurred.)
• 2026-03-24 — Filing Date (The date the Form 4 was filed with the SEC.)

Key Players & Entities

• Baker Cary (person) — Reporting Person
• IMPINJ INC (company) — Issuer
• 0001705407 (dollar_amount) — CIK of Reporting Person
• 0001114995 (dollar_amount) — CIK of Issuer

Forward-Looking Statements

• Further details regarding the nature and size of Cary Baker's transaction will be disclosed in subsequent filings or amendments. (Cary Baker) — medium confidence, target: 2026-04-23

FAQ

Filing Documents

• form4-03242026_080311.html (4)
• form4-03242026_080311.xml (4) — 17KB
• 0001705407-26-000002.txt ( ) — 18KB

From the Filing

SEC FORM 4 SEC Form 4 FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5    Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).    Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10. 1. Name and Address of Reporting Person * Baker Cary (Last) (First) (Middle) 400 FAIRVIEW AVE N. SUITE 1200 (Street) SEATTLE WASHINGTON 98109 (City) (State) (Zip) UNITED STATES (Country) 2. Issuer Name and Ticker or Trading Symbol IMPINJ INC [ PI ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) CHIEF FINANCIAL OFFICER 2a. Foreign Trading Symbol 3. Date of Earliest Transaction (Month/Day/Year) 03/23/2026 6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person 4. If Amendment, Date of Original Filed (Month/Day/Year) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/23/2026 M 782 A $ 0 88,659 D Common Stock 03/23/2026 M 479 A $ 0 89,138 D Common Stock 03/23/2026 M 597 A $ 0 89,735 D Common Stock 03/23/2026 F (1) 732 D $ 101.17 89,003 D Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units $ 0 (2) 03/23/2026 M 782 (3) (3) Common Stock 782 $ 0 0 D Restricted Stock Units $ 0 (2) 03/23/2026 M 479 (4) (4) Common Stock 479 $ 0 1,917 D Restricted Stock Units $ 0 (2) 03/23/2026 M 597 (5) (5) Common Stock 597 $ 0 4,773 D Restricted Stock Units $ 0 (2) 03/23/2026 A 7,627 (6) (6) Common Stock 7,627 $ 0 7,627 D Explanation of Responses: 1. 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 vesting of restricted stock units, or RSUs. 2. Each RSU represents a contingent right to receive one share of Impinj common stock. 3. On March 23, 2022, the reporting person was granted 12,500 RSUs. One-sixteenth of these vested on March 23, 2026. 4. On March 23, 2023, the reporting person was granted 7,665 RSUs. One-sixteenth of these vested on March 23, 2026. 5. On March 23, 2024, the reporting person was granted 9,545 RSUs. One-sixteenth of these vested on March 23, 2026. 6. One-fourth of the shares subject to the grant shall vest on March 23, 2027, and 1/16th of the shares subject to the grant shall vest each quarter thereafter, subject to the reporting person's continued service to the Issuer through such date. /s/ Yukio Morikubo, Attorney in fact for Cary Baker 03/24/2026 ** Signature of Reporting Person Date Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. * If the form is filed by more than one reporting person, see Instruction 4 (b)(v). ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for p

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