Impinj director exercises 3,114 RSUs into shares

Impinj director Washington Miron reported equity compensation activity involving restricted stock units (RSUs).

Accepted by SEC EDGAR 05/29/2026 - 05:34 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Impinj director Washington Miron reported equity compensation activity involving restricted stock units (RSUs). On May 28, 2026, 3,114 RSUs granted on June 5, 2024 fully vested and were exercised into 3,114 shares of common stock, bringing his direct common share holdings to 5,154.

On the same date, he also received a new grant of 1,896 RSUs, each representing a right to one share of common stock, which will fully vest on May 28, 2027. The filing shows only acquisitions and no share sales.

Insider Trade Summary

3,114 shares exercised/converted

Exercise 3 txns

Insider WASHINGTON MIRON

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	3,114	$0.00	$0.00
Grant/Award	Restricted Stock Units	1,896	$0.00	$0.00
Exercise	Common Stock	3,114	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 1,896 units (Direct); Common Stock — 5,154 shares (Direct)

Holdings Before and After: Restricted Stock Units, 3,114 to 1,896 units (Direct); Common Stock, 2,040 to 5,154 shares (Direct)

Footnotes (3)

1. F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Impinj common stock.
2. F2. On June 5, 2024, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.
3. F3. The restricted stock units will fully vest on May 28, 2027.

Key Figures

RSUs exercised: 3,114 units Common shares after transactions: 5,154 shares New RSU grant: 1,896 units +2 more

5 metrics

RSUs exercised 3,114 units RSUs granted June 5, 2024, vested and exercised May 28, 2026

Common shares after transactions 5,154 shares Direct holdings following May 28, 2026 RSU exercise

New RSU grant 1,896 units RSUs granted May 28, 2026, scheduled to fully vest May 28, 2027

Underlying shares for new RSUs 1,896 shares Each RSU represents one share of Impinj common stock

Underlying shares for exercised RSUs 3,114 shares Conversion of vested RSUs into common stock

Key Terms

Restricted Stock Units, RSU, contingent right, vested

4 terms

Restricted Stock Units financial

"The reporting person was granted 3,114 RSUs and later 1,896 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.

RSU financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share of Impinj common stock."

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

contingent right financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share of Impinj common stock."

vested financial

"These RSUs fully vested on May 28, 2026. The restricted stock units will fully vest on May 28, 2027."

FAQ

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

What insider activity did Washington Miron report for Impinj (PI)?

Washington Miron reported equity compensation activity, including vesting and exercise of 3,114 RSUs into common stock and a new grant of 1,896 RSUs. All transactions increased his equity exposure, with no sales disclosed in this filing.

How many Impinj (PI) shares does Washington Miron hold after this Form 4?

After these transactions, Washington Miron directly holds 5,154 shares of Impinj common stock. This reflects the conversion of 3,114 vested RSUs into common stock, as shown in the non-derivative transaction section of the Form 4 filing.

What RSU grant did Washington Miron receive in the latest Impinj (PI) filing?

He received a new grant of 1,896 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Impinj common stock, and this grant is scheduled to fully vest on May 28, 2027, according to the filing footnotes.

When did Washington Miron’s earlier Impinj (PI) RSUs vest and convert?

RSUs granted on June 5, 2024 fully vested on May 28, 2026 and were exercised into 3,114 shares of Impinj common stock. This conversion is reflected as both the derivative RSU exercise and the matching common stock acquisition.

Does Washington Miron’s Impinj (PI) Form 4 show any stock sales?

No, the Form 4 shows no stock sales by Washington Miron. All reported transactions are RSU-related acquisitions and exercises, increasing his holdings of Impinj common stock and RSUs without any disposals or tax-withholding sales disclosed.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

WASHINGTON MIRON

(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)
05/28/2026

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	05/28/2026		M		3,114	A	$0	5,154	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)	05/28/2026		M			3,114	(2)	(2)	Common Stock	3,114	$0	0	D
Restricted Stock Units	$0(1)	05/28/2026		A		1,896		(3)	(3)	Common Stock	1,896	$0	1,896	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Impinj common stock.

2. On June 5, 2024, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

3. The restricted stock units will fully vest on May 28, 2027.

	/s/ Yukio Morikubo, Attorney in fact for Miron Washington	05/29/2026
	** 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)