Impinj (PI) Form 144: 300,000 Shares Proposed for Sale ($58.9M)

Impinj, Inc. Form 144 notice shows a proposed sale of 300,000 shares of common stock through Morgan Stanley & Co. LLC on NASDAQ, with an aggregate market value of $58,873,670.

Accepted by SEC EDGAR 09/10/2025 - 09:45 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Impinj, Inc. Form 144 notice shows a proposed sale of 300,000 shares of common stock through Morgan Stanley & Co. LLC on NASDAQ, with an aggregate market value of $58,873,670. The filing reports 1,829,260 shares outstanding, so the proposed sale represents approximately 16.4% of outstanding shares. The securities were acquired on 03/01/2018 via open market purchases and payment was made DVP–Cash. No sales by the reporting person were reported in the past three months. The filer certifies they are unaware of undisclosed material adverse information about the issuer.

Positive

• Shares were acquired in 2018 via open-market purchases, indicating a long-term holding period by the seller
• No sales reported in the past three months, suggesting this is not part of frequent selling activity

Negative

• Proposed sale equals ~16.4% of outstanding shares, a large block that could exert downward pressure on price if sold quickly
• High aggregate market value ($58,873,670) increases the potential market impact of the resale

Insights

Securities Analyst

TL;DR: A sizable single-holder sale is planned but stems from long-held open-market purchases, creating potential short-term supply pressure.

The notice discloses a proposed brokered sale of 300,000 shares with an aggregate market value of $58,873,670. Given 1,829,260 shares outstanding, this represents about 16.4% of outstanding shares, which is large enough to be market-moving if executed over a short period. The shares were originally acquired in 2018 via open-market purchases and no other sales in the past three months are reported, which suggests this is not part of frequent trading by the filer. Impact depends on execution timing and collateral market liquidity; the filing itself is procedural under Rule 144 rather than an operational disclosure.

Corporate Governance Expert

TL;DR: The filing documents an allowed sale under Rule 144 by a long-term holder; governance implications are limited absent other disclosures.

The Form 144 indicates compliance with resale rules: acquisition via open-market purchases in 2018 and planned sale through a major broker. The filer affirms no undisclosed material adverse information. From a governance standpoint, insider or large-holder disposition of 16.4% of outstanding shares warrants attention from investors and the board only if it signals a change in insider alignment or if correlated disclosures emerge. Alone, the notice is a routine regulatory step to permit resale.

FAQ

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

What does Impinj (PI) Form 144 disclose?

The Form 144 discloses a proposed sale of 300,000 common shares on NASDAQ through Morgan Stanley with an aggregate market value of $58,873,670.

What percentage of outstanding shares is the proposed sale for PI?

The filing lists 1,829,260 shares outstanding; 300,000 shares represent approximately 16.4% of that amount.

When were the shares being sold originally acquired?

The securities were acquired on 03/01/2018 via open-market purchases, with payment noted as DVP–Cash.

Were any PI securities sold by the filer in the past three months?

The filing states "Nothing to Report" for securities sold during the past three months.

Through which broker will the PI shares be sold?

The filing names Morgan Stanley & Co. LLC, 1585 Broadway New York NY 10036 as the broker of record.

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	0002003074
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	SYLEBRA CAPITAL LLC
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 STOCK	Morgan Stanley & Co. LLC 1585 Broadway New York NY 10036	300000	58873670.00	1829260	09/10/2025	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 STOCK	03/01/2018	Open Market Purchases - please refer to explanatory notes under the section of Remarks.	Open Market Purchases - please refer to explanatory notes under the section of Remarks.			300000	03/01/2018	DVP- Cash. Please refer to explanatory notes under the section of Remarks.

* 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	Please note that the securities to be sold were acquired fromMar 2018 to Aug 2023 and the date of payment ranged from Mar 2018 to Aug 2023. The reporting person hereby undertakes to provide upon request to the SEC staff or the Issuer full information regarding the number of shares and prices at which the transactions were effected. These securities are held by other advisory clients of the Reporting Person. Daniel Gibson (Mr Gibson) is the sole member and the CIO of the Reporting Person and is a member of the board of directors of the Issuer. Reporting Person and Mr Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Reporting Person and Mr Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.
Date of Notice	09/10/2025
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	Matthew Whitehead
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)