Sylebra entities sell 45K Impinj shares

Sylebra Capital–advised funds reported open-market sales of Impinj common stock.

Rhea-AI Filing Summary

Sylebra Capital–advised funds reported open-market sales of Impinj common stock. On June 2, entities advised by Sylebra sold 38,724 shares at an average price of $142.3145 per share. On June 3, they sold an additional 6,313 shares at $139.1663 per share.

After these transactions, the filing shows 921,467 Impinj shares indirectly held. The shares are owned by Sylebra Capital Partners Master Fund, Sylebra Capital Menlo Master Fund, and other advisory clients, and Sylebra entities and Daniel Patrick Gibson disclaim beneficial ownership except to the extent of any pecuniary interest.

Insider Trade Summary

Net Seller: 45,037 shares

Net Sell 2 txns

Insider SYLEBRA CAPITAL LLC

Role Director

Sold 45,037 shs ($6.39M)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,313	$139.1663	$879K
Sale	Common Stock	38,724	$142.3145	$5.51M

Holdings After Transaction: Common Stock — 921,467 shares (Indirect, See Footnote (1) (2))

Footnotes (2)

1. F1. (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.
2. F2. (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

Key Figures

Shares sold June 2, 2026: 38,724 shares Shares sold June 3, 2026: 6,313 shares Total shares sold: 45,037 shares +4 more

7 metrics

Shares sold June 2, 2026 38,724 shares Open-market sale of Impinj common stock at $142.3145/share

Shares sold June 3, 2026 6,313 shares Open-market sale of Impinj common stock at $139.1663/share

Total shares sold 45,037 shares Net shares sold across both reported transactions

Average price June 2 sale $142.3145/share Price for 38,724 Impinj shares sold

Average price June 3 sale $139.1663/share Price for 6,313 Impinj shares sold

Shares held after June 3 921,467 shares Indirect Impinj holdings shown following the latest transaction

Shares held after June 2 927,780 shares Indirect Impinj holdings shown following the June 2 sale

Key Terms

open-market sale, indirect ownership, beneficial ownership, pecuniary interest, +1 more

5 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

indirect ownership financial

""direct_or_indirect": "I", "ownership_type": "indirect""

beneficial ownership financial

"disclaim beneficial ownership of these securities"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"except to the extent of their pecuniary interest, if any, therein"

investment manager financial

"Sylebra Capital Management (Sylebra Cayman) is the investment manager"

FAQ

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

What did Sylebra-related entities do in this Impinj (PI) Form 4?

Sylebra-advised funds sold Impinj shares in the open market. They reported two sales totaling 45,037 common shares on June 2 and June 3, 2026, while still showing 921,467 shares indirectly held after the transactions.

How many Impinj (PI) shares were sold and at what prices?

A total of 45,037 Impinj common shares were sold. On June 2, 38,724 shares were sold at an average price of $142.3145. On June 3, 6,313 shares were sold at an average price of $139.1663 per share.

How many Impinj (PI) shares remain held after these Sylebra-related sales?

The Form 4 shows 921,467 Impinj shares indirectly held after the sales. This post-transaction figure reflects holdings attributed to Sylebra Capital Partners Master Fund, Sylebra Capital Menlo Master Fund, and other advisory clients of Sylebra entities.

Who is actually selling the Impinj (PI) shares in this Form 4?

The securities are held by Sylebra-advised funds and clients. The filing states the shares are owned by Sylebra Capital Partners Master Fund, Sylebra Capital Menlo Master Fund, and other advisory clients, with Sylebra entities and Daniel Patrick Gibson disclaiming beneficial ownership except for any pecuniary interest.

Were these Impinj (PI) transactions direct or indirect holdings for the reporter?

The reported Impinj holdings are indirect. Each transaction is coded as indirect ownership, with the nature of ownership described by footnotes that attribute the shares to Sylebra-managed funds and advisory clients rather than to the reporting entities personally.

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

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Accepted by SEC EDGAR 06/04/2026 - 05:04 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).

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^*

SYLEBRA CAPITAL LLC

(Last) (First) (Middle)

3000 EL CAMINO REAL BUILDING 5 SUITE 450

(Street)

PALO ALTO CALIFORNIA 94306

(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)
06/02/2026

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	06/02/2026	06/03/2026	S		38,724	D	$142.3145	927,780	I	See Footnote (1) (2)(1)(2)
Common Stock	06/03/2026	06/04/2026	S		6,313	D	$139.1663	921,467	I	See Footnote (1) (2)(1)(2)

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. (1) Sylebra Capital LLC (Sylebra US) and Sylebra Capital Limited (Sylebra HK) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCPMF), Sylebra Capital Menlo Master Fund (MENLO MF), and other advisory clients. Sylebra Capital Management (Sylebra Cayman) is the investment manager and parent of Sylebra HK. Sylebra Cayman owns 100% of the shares of Sylebra HK and Daniel Patrick Gibson (Gibson) owns more than 100% of the Class A shares of Sylebra Cayman and 100% of the share capital of Sylebra US. Gibson is a founder and Chief Investment Officer of Sylebra Cayman. In such capacities, Sylebra US, Sylebra HK, Sylebra Cayman and Gibson may be deemed to share voting and dispositive power over the shares of common stock of the Issuer held by SCP MF, MENLO MF, and other advisory clients.

2. (2) These securities are held by SCP MF, MENLO MF, and other advisory clients. Gibson is a member of the board of directors of the Issuer. Sylebra US, Sylebra HK, Sylebra Cayman and Gibson disclaim beneficial ownership of these securities, and this report shall not be deemed an admission that Sylebra US, Sylebra HK, Sylebra Cayman and Gibson are the beneficial owners of such securities, except to the extent of their pecuniary interest, if any, therein.

	Matthew Whitehead	06/04/2026
	** 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)