Daniel Patrick Gibson - 28 May 2026 Form 4 Insider Report for IMPINJ INC (PI)

Reporting relationship: Director
Issuer ticker: PI
Reported as of: 28 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 29 May 2026, 17:36:26 UTC
Prior SEC filing: 06 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Yukio Morikubo, Attorney in fact for Daniel Patrick Gibson

Key filing fact

Daniel Patrick Gibson filed Form 4 for IMPINJ INC (PI) on 29 May 2026.

Key facts

This page summarizes Daniel Patrick Gibson's Form 4 filing for IMPINJ INC (PI).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 29 May 2026, 17:36.

Change

Previous filing in this sequence was filed on 06 Jun 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001745725 Primary reporting owner

Gibson Daniel Patrick

Relationship: Director
Address: C/O IMPINJ, INC., 400 FAIRVIEW AVENUE NORTH, SUITE 1200, SEATTLE
Signature: /s/ Yukio Morikubo, Attorney in fact for Daniel Patrick Gibson
Signature date: 29 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

PI transaction

Common Stock

Options Exercise

Transaction value
Shares: +3,114
Change %: +16%
Price: $0.000000^*
Shares after: 23,010
Date: 28 May 2026
Ownership: Direct

PI holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,022,171
Date: 28 May 2026
Ownership: See footnote
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

PI transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -3,114
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 28 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,114
Exercise price: $0.000000
Footnotes: F2, F3

PI transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +1,896
Change %
Price: $0.000000^*
Shares after: 1,896
Date: 28 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,896
Exercise price: $0.000000
Footnotes: F2, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Sylebra Capital Limited (Sylebra HK) and Sylebra Capital LLC (Sylebra US) are the investment sub-advisers to Sylebra Capital Partners Master Fund, Ltd. (SCP MF), Sylebra Capital Parc Master Fund (PARC MF), 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 100% of 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 HK, Sylebra US, 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, PARC MF, MENLO MF, and other advisory clients.

Footnote F2

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Impinj common stock.

Footnote F3

On June 5, 2025, the reporting person was granted 3,114 RSUs. These RSUs fully vested on May 28, 2026.

Footnote F4

The restricted stock units will fully vest on May 28, 2027.