Form 4: Impinj CEO Chris Diorio Reports RSU Vesting, Tax Withholding

Impinj CEO Chris Diorio reported the vesting of Restricted Stock Units and subsequent share disposition for tax obligations on December 23, 2025.

Summary

• Chris Diorio, CEO and Director of Impinj Inc. (PI), reported transactions related to the vesting of Restricted Stock Units (RSUs).
• On December 23, 2025, a total of 5,635 shares of common stock were acquired through the vesting of RSUs (2,594 shares from a 2022 grant, 1,224 shares from a 2023 grant, and 1,817 shares from a 2024 grant).
• Concurrently, 2,218 shares were disposed of at a price of $171.99 per share to satisfy tax withholding obligations arising from the RSU vesting.
• Following these transactions, Chris Diorio directly beneficially owns 374,422 shares of Impinj common stock.
• Additionally, 199,362 shares are indirectly beneficially owned by DFT L.L.C.

Sentiment

Score: 6

Explanation: The sentiment is slightly positive as RSU vesting represents earned compensation and continued alignment of management with shareholder interests, despite the routine tax-related share disposition.

Positives

• The vesting of Restricted Stock Units (RSUs) indicates the fulfillment of long-term incentive compensation for the CEO, aligning management's interests with shareholder value over time.
• The acquisition of 5,635 shares through RSU vesting increases the CEO's overall beneficial ownership, demonstrating continued commitment to the company.

Negatives

• A disposition of 2,218 shares occurred to cover tax withholding obligations, which reduces the direct beneficial ownership of the CEO, even if it is a routine, non-discretionary transaction.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This is a routine insider transaction filing (Form 4) and does not provide information directly related to broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: The transactions are routine and expected, reflecting executive compensation and tax obligations. They do not indicate a change in company fundamentals or strategic direction.
• Employees: No direct impact on employees is indicated by this filing.

Key Dates

Recommendation

This Form 4 filing details routine, pre-scheduled RSU vesting and subsequent tax-related share disposition by the CEO. Such transactions are common for executive compensation and do not typically signal a change in the company's operational performance or future prospects. Therefore, it does not provide a basis for a 'buy' or 'sell' recommendation, suggesting a 'hold' position for investors based solely on this filing.

Keywords

Impinj Inc., PI, Chris Diorio, CEO, Director, Form 4, Insider Transaction, Restricted Stock Units, RSU Vesting, Share Disposition, Tax Withholding, Beneficial Ownership