Form 4: Impinj CEO Diorio Reports RSU Vesting & Share Transactions

Impinj Inc.'s CEO and Director, Chris Diorio, reported the vesting of Restricted Stock Units and subsequent common stock transactions, including a tax-related disposition.

Summary

• Chris Diorio, Chief Executive Officer and Director of Impinj Inc. (PI), reported transactions on September 23, 2025, related to his beneficial ownership.
• A total of 5,636 shares of common stock were acquired through the vesting of Restricted Stock Units (RSUs) at an exercise price of $0.
• These acquired shares originated from RSU grants on March 23, 2022 (2,594 shares), March 23, 2023 (1,224 shares), and March 23, 2024 (1,818 shares).
• Diorio disposed of 2,219 shares of common stock at a price of $184.97 to satisfy tax withholding obligations arising from the RSU vesting.
• Following these transactions, Diorio directly beneficially owns 354,505 shares of common stock and indirectly owns 199,362 shares through DFT L.L.C.
• Remaining unvested RSUs from the respective grant dates are 5,188 (March 23, 2022 grant), 7,343 (March 23, 2023 grant), and 18,172 (March 23, 2024 grant).

Sentiment

Score: 5

Explanation: The filing reports routine insider transactions related to executive compensation (RSU vesting and tax-related share disposition). These are expected events and do not indicate a significant positive or negative shift in company fundamentals or outlook.

Positives

• Continued vesting of Restricted Stock Units (RSUs) for the CEO indicates ongoing long-term incentive compensation and alignment with shareholder interests.
• The acquisition of 5,636 shares of common stock through RSU vesting at a $0 exercise price increases the CEO's direct beneficial ownership in the company.

Negatives

• The disposition of 2,219 shares for tax withholding purposes reduces the net shares acquired from vesting, which is a common but necessary reduction in direct ownership.

Future Outlook

The filing details past RSU grants with future vesting schedules, indicating ongoing long-term incentive compensation for the CEO, but does not provide broader forward-looking statements or guidance for the company's performance.

Industry Context

This Form 4 filing is a routine disclosure of insider transactions, specifically the vesting of executive compensation in the form of Restricted Stock Units (RSUs) and subsequent tax-related share dispositions. It does not provide information directly related to broader industry trends or competitive positioning within the semiconductor or RFID technology sectors.

Related Party Transactions

• Chris Diorio's indirect beneficial ownership of 199,362 shares through DFT L.L.C. is noted.

Stakeholder Impact

• Shareholders: Provides transparency into executive compensation and insider ownership changes, which are routine and expected.
• Employees: No direct impact mentioned.
• Customers/Suppliers/Creditors: No direct impact mentioned.

Next Steps

• Future vesting of remaining Restricted Stock Units (RSUs) according to their respective schedules.

Key Dates

Keywords

Impinj Inc., PI, Chris Diorio, SEC Form 4, Insider Trading, Restricted Stock Units, RSU Vesting, Common Stock, Beneficial Ownership, Executive Compensation