Form 4: Impinj CFO's Routine RSU Vesting and Tax Withholding

Impinj's Chief Financial Officer, Cary Baker, reported the vesting of restricted stock units and a subsequent disposition of shares to cover tax obligations.

Summary

• Cary Baker, Chief Financial Officer of Impinj Inc., reported transactions on December 23, 2025.
• The transactions involved the vesting of Restricted Stock Units (RSUs) and the subsequent disposition of shares to satisfy tax withholding obligations.
• A total of 1,856 shares of common stock were acquired through the vesting of RSUs (781, 479, and 596 shares from grants on March 23, 2022, March 23, 2023, and March 23, 2024, respectively).
• 732 shares of common stock were disposed of at a price of $171.99 per share to cover tax withholding obligations related to the RSU vesting.
• Following these transactions, Cary Baker beneficially owns 81,603 shares of Impinj common stock directly.
• Remaining unvested RSUs include 782, 2,396, and 5,370 units from the respective grants.

Sentiment

Score: 5

Explanation: The filing reports routine, pre-scheduled insider transactions related to executive compensation (RSU vesting and tax withholding). These events are neutral in sentiment as they do not indicate discretionary buying or selling by the insider, nor do they reveal new operational or financial performance information.

Positives

• The vesting of Restricted Stock Units indicates continued compensation and retention of a key executive.
• The transactions are routine and pre-scheduled, reflecting standard compensation practices.

Negatives

• The disposition of shares, while for tax purposes, reduces the direct beneficial ownership of the executive by 732 shares.

Future Outlook

The filing does not contain any forward-looking statements or guidance.

Industry Context

This filing is a routine insider transaction report and does not provide specific industry context. It reflects standard executive compensation practices within the technology sector, where Restricted Stock Units are a common form of equity compensation.

Related Party Transactions

• The vesting of Restricted Stock Units and the disposition of shares to the Issuer for tax withholding purposes are transactions between an officer and the company, which are considered related-party dealings in the context of executive compensation. These are standard and disclosed as part of the compensation structure.

Stakeholder Impact

• Shareholders: Minimal direct impact as these are routine, pre-scheduled compensation events. The slight reduction in direct beneficial ownership due to tax withholding is a standard practice.
• Employees: No direct impact mentioned.
• Customers/Suppliers/Creditors: No direct impact mentioned.

Key Dates

Keywords

Impinj, PI, Cary Baker, CFO, Form 4, SEC Filing, Insider Transaction, Restricted Stock Units, RSU Vesting, Tax Withholding, Beneficial Ownership