Impinj director Arthur L. Valdez Jr. receives 1,220 shares

The 1,220 RSUs were granted on October 20, 2025, before vesting a year later.

Rhea-AI Filing Summary

Impinj Inc. (PI) director Arthur L. Valdez Jr. converted 1,220 restricted stock units into 1,220 shares of common stock on October 20, 2026, when the units fully vested. His reported direct common-stock holdings after the transaction were 1,220 shares. No Rule 10b5-1 plan is reported.

Insider Trade Summary

1,220 shares exercised/converted

Exercise 2 txns

Insider Valdez Arthur L Jr

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F1, F2	1,220	$0.00	$0.00
Exercise	Common Stock	1,220	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 0 contracts (Direct); Common Stock — 1,220 shares (Direct)

Footnotes (2)

1. F1. Each RSU represents a contingent right to receive one share of Impinj common stock.
2. F2. On October 20, 2025, the reporting person was granted 1,220 RSUs. These RSUs fully vested on October 20, 2026.

Key Figures

Restricted stock units granted: 1,220 RSUs Common shares received upon vesting: 1,220 shares Direct common-stock holdings after transaction: 1,220 shares

3 metrics

Restricted stock units granted 1,220 RSUs Granted October 20, 2025

Common shares received upon vesting 1,220 shares October 20, 2026

Direct common-stock holdings after transaction 1,220 shares Reported after the October 20, 2026 transaction

Key Terms

Restricted Stock Units, fully vested, contingent right

3 terms

Restricted Stock Units financial

"Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

fully vested financial

"These RSUs fully vested on October 20, 2026."

contingent right financial

"a contingent right to receive one share of Impinj common stock."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many PI shares did director Arthur L. Valdez Jr. receive from RSU vesting?

Arthur L. Valdez Jr. received 1,220 shares of Impinj common stock when 1,220 RSUs fully vested on October 20, 2026, leaving him with 1,220 directly held shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/21/2026 - 04:35 PM EDT Accepted by SEC EDGAR 10/21/2026 - 04:34 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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^*

Valdez Arthur L Jr

(Last) (First) (Middle)

C/O IMPINJ, INC.

400 FAIRVIEW AVENUE NORTH, 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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/20/2026

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	10/20/2026		M		1,220	A	$0	1,220	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(1)	10/20/2026		M			1,220	(2)	(2)	Common Stock	1,220	$0	0	D

Explanation of Responses:

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

2. On October 20, 2025, the reporting person was granted 1,220 RSUs. These RSUs fully vested on October 20, 2026.

	/s/ Yukio Morikubo, Attorney in fact for Arthur L. Valdez, Jr.	10/21/2026
	** 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 procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)