Impinj CEO gifts 10,000 shares under plan

Impinj CEO Chris Diorio reported a 10,000-share bona fide gift under a Rule 10b5-1 plan, retaining substantial direct and indirect holdings.

Rhea-AI Filing Summary

IMPINJ INC (PI) reported that Chief Executive Officer and director Chris Diorio made a bona fide gift of 10,000 shares of common stock on September 14, 2026. The gift was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026. After this disposition, Diorio held 354,421 shares directly and an additional 199,362 shares indirectly through DFT L.L.C.

Insider Trade Summary 10b5-1

10,000 shares gifted

Gift 2 txns

Insider DIORIO CHRIS PH.D.

Role CHIEF EXECUTIVE OFFICER

Type	Security	Shares	Price	Value
Gift	Common Stock F1	10,000	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 354,421 shares (Direct); Common Stock — 199,362 shares (Indirect, by DFT L.L.C.)

Footnotes (1)

1. F1. The disposition of shares reported by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026.

Key Figures

Shares gifted: 10,000 shares Price per share for gift: $0.00 per share Direct holdings after transaction: 354,421 shares +2 more

5 metrics

Shares gifted 10,000 shares Bona fide gift of common stock on September 14, 2026 by CEO Chris Diorio

Price per share for gift $0.00 per share Reported transaction price for the 10,000-share bona fide gift

Direct holdings after transaction 354,421 shares Direct Impinj common stock held by Chris Diorio following the gift

Indirect holdings after transaction 199,362 shares Indirect Impinj common stock held by DFT L.L.C. associated with Chris Diorio

Rule 10b5-1 plan adoption date February 23, 2026 Trading plan under which the 10,000-share gift was effected

Key Terms

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

3 terms

Rule 10b5-1 trading plan regulatory

"was 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.

bona fide gift financial

"transaction code description indicates the disposition was a bona fide gift"

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.

indirect ownership financial

"shows indirect ownership of common stock described as held by DFT L.L.C."

FAQ

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

What insider transaction did Impinj (PI) report for CEO Chris Diorio?

Impinj reported that CEO and director Chris Diorio made a bona fide gift of 10,000 shares of common stock on September 14, 2026, as disclosed in a Form 4 insider filing.

Was the September 14, 2026 Impinj (PI) insider gift under a Rule 10b5-1 plan?

Yes. The filing states the disposition of 10,000 shares by Dr. Diorio was effected pursuant to a Rule 10b5-1 trading plan adopted on February 23, 2026, and the plan affirmation box is checked.

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

After the 10,000-share bona fide gift, Chris Diorio held 354,421 shares of Impinj common stock directly, according to the Form 4 disclosure.

What indirect Impinj (PI) holdings does Chris Diorio report after the transaction?

The Form 4 shows an indirect holding of 199,362 shares of Impinj common stock, held “by DFT L.L.C.”, following the reported September 14, 2026 transactions.

Did the Impinj (PI) insider filing report any open market sales or purchases?

No. The filing reports a bona fide gift of 10,000 shares and a separate entry updating indirect holdings of 199,362 shares. It does not report any open market purchases or sales.

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

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Available on EDGAR 09/15/2026 - 04:48 PM Accepted by SEC EDGAR 09/15/2026 - 04:47 PM 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).

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)
09/14/2026

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	09/14/2026		G(1)		10,000	D	$0	354,421	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	09/15/2026
	** 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)