Impinj director plans Rule 144 sale of 800 shares

Available on EDGAR 09/15/2026 - 04:28 PM EDT Accepted by SEC EDGAR 09/15/2026 - 04:28 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

IMPINJ INC (PI) director Washington Miron filed a Rule 144 notice to sell up to 800 shares of common stock of Impinj through broker Charles Schwab & Co., Inc. The planned sale, listed for September 15, 2026 on Nasdaq, has an indicated aggregate market value of $138,608.

The 800 shares come from equity compensation in the form of restricted stock that lapsed on June 6, 2024 (229 shares) and June 5, 2025 (571 shares) from Impinj, Inc.

Key Figures

Shares to be sold: 800 shares Aggregate market value of shares: $138,608 Planned sale date: September 15, 2026 +2 more

5 metrics

Shares to be sold 800 shares Maximum Impinj common shares listed for sale under Rule 144

Aggregate market value of shares $138,608 Indicated value for the 800 Impinj shares covered by the notice

Planned sale date September 15, 2026 Date listed for the potential Nasdaq sale of Impinj common stock

Restricted stock lapse (first tranche) 229 shares Restricted stock that lapsed on June 6, 2024 as equity compensation

Restricted stock lapse (second tranche) 571 shares Restricted stock that lapsed on June 5, 2025 as equity compensation

Key Terms

Rule 144, Restricted Stock Lapse, Equity Compensation

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Lapse financial

"Common | 06/06/2024 | Restricted Stock Lapse | IMPINJ, INC."

Equity Compensation financial

"229 | 06/06/2024 | Equity Compensation"

Equity compensation is pay given to employees, executives or contractors in the form of company ownership—such as stock, stock options or restricted shares—rather than just cash. It matters to investors because it can align workers' incentives with shareholders (like paying someone in slices of the same pie they help grow), but it also increases the number of shares outstanding and company expenses, affecting ownership percentages and earnings per share.

FAQ

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

What does the Form 144 filing disclose for IMPINJ INC (PI)?

The filing discloses that director Washington Miron intends to sell up to 800 shares of Impinj common stock under Rule 144, with an indicated aggregate market value of $138,608, to be sold through Charles Schwab & Co., Inc. on or about September 15, 2026.

How many IMPINJ INC (PI) shares are covered by this Form 144 notice?

The notice covers up to 800 shares of Impinj common stock. These shares are planned to be sold through Charles Schwab & Co., Inc. in a Rule 144 transaction, with the filing listing an aggregate market value of $138,608 for the shares.

When were the IMPINJ INC (PI) shares proposed for sale acquired?

The 800 shares proposed for sale were acquired through equity compensation as restricted stock that lapsed on two dates: 229 shares on June 6, 2024 and 571 shares on June 5, 2025, both from Impinj, Inc.

What is the relationship of the seller to IMPINJ INC (PI)?

The securities to be sold are for the account of Washington Miron, who is identified as a Director of Impinj, Inc. This Form 144 provides notice of a potential sale by this insider under Rule 144.

Which broker will handle the potential IMPINJ INC (PI) share sale?

The planned sale of Impinj common stock is listed to be executed through Charles Schwab & Co., Inc., located in Westlake, Texas. The filing identifies Nasdaq as the market on which the common shares are traded.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001969449
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	IMPINJ INC
SEC File Number	001-37824
Address of Issuer	400 FAIRVIEW AVENUE NORTH SUITE 1200 SEATTLE WASHINGTON 98109
Phone	206-517-5300
Name of Person for Whose Account the Securities are To Be Sold	WASHINGTON MIRON
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Charles Schwab & Co., Inc. 3000 Schwab Way Westlake TX 76262	800	138608.00	30554413	09/15/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/06/2024	Restricted Stock Lapse	IMPINJ, INC.			229	06/06/2024	Equity Compensation
Common	06/05/2025	Restricted Stock Lapse	IMPINJ, INC.			571	06/05/2025	Equity Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/15/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	MIRON WASHINGTON
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)