Impinj (PI) director boosts holdings through RSU vesting and new award

Rhea-AI Filing Summary

Impinj director Umesh Padval reported equity compensation activity involving restricted stock units (RSUs) and common stock. On May 28, 2026, he exercised 3,114 RSUs that had been granted on June 5, 2025, receiving 3,114 shares of common stock at no cash cost.

On the same date, he also received a new grant of 1,896 RSUs, each representing a right to one share of Impinj common stock. These new RSUs are scheduled to fully vest on May 28, 2027. After these transactions, Padval directly holds 6,654 shares of common stock and 1,896 RSUs, reflecting routine director compensation rather than open-market buying or selling.

Insights

Equity compensation analyst

Routine director RSU vesting and grant, with no open-market trading.

Director Umesh Padval exercised 3,114 restricted stock units into Impinj common shares and received a new grant of 1,896 RSUs. The exercise price is reported as $0.00, consistent with standard RSU vesting where no cash changes hands.

Following these actions, he directly holds 6,654 common shares and 1,896 RSUs scheduled to vest on May 28, 2027. There are no sales, gifts, or tax-withholding dispositions in this filing, indicating purely compensation-related activity with a neutral informational signal for investors.

Insider Trade Summary

Net Buyer: 3,114 shares

Net Buy 3 txns

Insider PADVAL UMESH

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 shares (Direct); Common Stock — 6,654 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, 2025, 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 New RSU grant: 1,896 units Common shares held: 6,654 shares +1 more

4 metrics

RSUs exercised 3,114 units Converted into 3,114 Impinj common shares on May 28, 2026

New RSU grant 1,896 units Granted on May 28, 2026; scheduled to vest May 28, 2027

Common shares held 6,654 shares Total direct Impinj common stock holdings after transactions

Unvested RSUs remaining 1,896 units RSUs that will fully vest on May 28, 2027

Key Terms

Restricted Stock Units, RSU, derivative security, grant, award, or other acquisition

4 terms

Restricted Stock Units financial

"On the same date, he also received a new grant of 1,896 RSUs"

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"

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.

derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 05/29/2026 - 05:33 PM Accepted by SEC EDGAR 05/29/2026 - 05:32 PM Learn about SEC filing dates

FAQ

What did Impinj (PI) director Umesh Padval report in this Form 4?

He reported routine equity compensation activity. On May 28, 2026, he exercised 3,114 restricted stock units into common stock and received a new grant of 1,896 RSUs, with no open-market purchases or sales disclosed.

How many Impinj (PI) shares does Umesh Padval hold after these transactions?

After the reported transactions, he directly holds 6,654 shares of Impinj common stock. In addition, he holds 1,896 restricted stock units, each representing a contingent right to receive one additional Impinj share upon vesting.

What are the details of the RSUs exercised by Umesh Padval at Impinj (PI)?

The Form 4 shows he exercised 3,114 restricted stock units on May 28, 2026. These RSUs were granted on June 5, 2025 and fully vested on May 28, 2026, converting into 3,114 shares of Impinj common stock at a reported price of $0.00.

What new RSU grant did Impinj (PI) director Umesh Padval receive?

He received a new grant of 1,896 restricted stock units on May 28, 2026. Each RSU represents a right to one Impinj common share, and the filing states these RSUs will fully vest on May 28, 2027, subject to the grant terms.

Does this Impinj (PI) Form 4 show any stock sales by Umesh Padval?

The filing does not report any sales. It shows only RSU-related acquisitions: one exercise of 3,114 RSUs into common stock and a new grant of 1,896 RSUs, with no open-market selling, gifting, or tax-withholding dispositions listed.

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^*

PADVAL UMESH

(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	6,654	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, 2025, 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 on behalf of Umesh Padval	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)