Form 4: Quanterix CEO Reports Tax-Related Stock Disposition

Quanterix Corp's President and CEO, Masoud Toloue, reported a disposition of 254 common shares to cover tax obligations related to RSU vesting.

Summary

• Masoud Toloue, President & CEO and Director of Quanterix Corp (QTRX), filed a Form 4 statement.
• The filing reports a transaction on November 30, 2025, where 254 shares of Common Stock were disposed of.
• These shares were withheld by Quanterix Corporation to cover tax obligations upon the vesting of 761 restricted stock units (RSUs).
• The price per share for the disposed securities was $7.26.
• Following this transaction, Masoud Toloue beneficially owns 509,946 shares, which includes 215,845 RSUs.

Sentiment

Score: 5

Explanation: The filing reports a routine, non-discretionary transaction (shares withheld for tax) by an insider, which is neutral in sentiment.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This filing is a routine insider transaction report and does not provide information relevant to broader industry trends or competitive landscape.

Related Party Transactions

• Quanterix Corporation withheld 254 shares of common stock from its President & CEO, Masoud Toloue, to cover tax obligations arising from the vesting of restricted stock units. This represents a transaction between the company and an executive officer.

Stakeholder Impact

• Shareholders: Minimal impact as this is a routine, non-discretionary transaction for tax purposes and does not reflect a change in investment sentiment by the insider.
• Employees: No direct impact indicated by this filing.

Key Dates

Keywords

Quanterix, QTRX, Form 4, Insider Transaction, Stock Disposition, RSU Vesting, Tax Obligations, Masoud Toloue