Impinj Inc (PI) CEO Chris Diorio makes 10,000-share stock gift

Rhea-AI Filing Summary

Impinj CEO Chris Diorio reported a charitable transfer of stock. He made a bona fide gift of 10,000 shares of Impinj common stock at a stated price of $0.00 per share. After this gift, he directly owns 380,302 shares and indirectly holds 199,362 shares through DFT L.L.C. The disposition was effected under a pre-arranged Rule 10b5-1 trading plan adopted on February 23, 2026, indicating the transaction was scheduled in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

10,000 shares gifted

Mixed 2 txns

Insider DIORIO CHRIS PH.D.

Role CHIEF EXECUTIVE OFFICER

Type	Security	Shares	Price	Value
Gift	Common Stock	10,000	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 380,302 shares (Direct, null); Common Stock — 199,362 shares (Indirect, by DFT L.L.C.)

Footnotes (1)

1. [object Object]

Key Figures

Shares gifted: 10,000 shares Direct holdings after gift: 380,302 shares Indirect holdings: 199,362 shares +2 more

5 metrics

Shares gifted 10,000 shares Bona fide gift of common stock

Direct holdings after gift 380,302 shares Common stock directly owned after transaction

Indirect holdings 199,362 shares Common stock held indirectly by DFT L.L.C.

Gift code G Transaction code indicating bona fide gift

Gift price per share $0.00 per share Stated transaction price for gifted shares

Key Terms

bona fide gift, Rule 10b5-1 trading plan, indirect ownership, Form 4

4 terms

bona fide gift financial

"transaction_code_description: "Bona fide gift" for the 10,000-share transfer"

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

Rule 10b5-1 trading plan financial

"footnote: "effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026""

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

indirect ownership financial

"ownership_type: "indirect" with nature of ownership "by DFT L.L.C.""

Form 4 regulatory

"Insider activity is reported on SEC Form 4 for Impinj Inc"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

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).

X

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^*

DIORIO CHRIS PH.D.

(Last) (First) (Middle)

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
X	Officer (give title below)		Other (specify below)
	CHIEF EXECUTIVE OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

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	06/15/2026		G(1)		10,000	D	$0	380,302	D
Common Stock								199,362	I	by DFT L.L.C.

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

Explanation of Responses:

1. The disposition of shares reported by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026.

	/s/ Yukio Morikubo, Attorney in fact for Chris Diorio	06/16/2026
	** 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)

FAQ

What did Impinj (PI) CEO Chris Diorio report in this Form 4?

Chris Diorio reported a bona fide gift of Impinj common stock. He transferred 10,000 shares as a charitable gift, with no sale proceeds, while maintaining substantial direct and indirect ownership positions in the company after the transaction.

How many Impinj (PI) shares did the CEO gift and at what price?

He gifted 10,000 shares of Impinj common stock at a stated price of $0.00 per share. The transaction is coded as a bona fide gift, meaning it was a non-sale transfer without cash consideration changing hands.

How many Impinj (PI) shares does Chris Diorio hold after the reported gift?

Following the gift, Chris Diorio directly owns 380,302 Impinj common shares and indirectly holds 199,362 shares through DFT L.L.C. These combined positions show he retains a significant equity stake in the company after the charitable transfer.

Was the Impinj (PI) CEO’s stock gift made under a Rule 10b5-1 plan?

Yes. The footnote states the disposition of shares was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026. Such plans pre-schedule transactions, reducing the role of day-to-day market timing decisions by insiders.

Does this Impinj (PI) Form 4 indicate any open-market stock sales by the CEO?

No open-market sales are shown. The filing reports a bona fide gift of 10,000 shares and an indirect holding entry, with no transactions coded as open-market purchases or sales of Impinj stock by Chris Diorio in this dataset.