Form 4: Quanterix CEO Sells Shares for Tax Obligations
Insider Transaction Report
Quanterix President & CEO Masoud Toloue disposed of 254 common shares to cover tax liabilities related to RSU vesting.
Summary
- Masoud Toloue, President & CEO and Director of Quanterix Corp (QTRX), reported a transaction on September 30, 2025.
- The transaction involved the disposition of 254 shares of common stock at a price of $5.43 per share.
- These shares were withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 761 restricted stock units (RSUs).
- Following this transaction, Masoud Toloue beneficially owns 512,938 shares of common stock, which includes 223,569 RSUs.
- The transaction was made pursuant to a contract, instruction, or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
Sentiment
Score: 5
Explanation: The transaction is a routine, non-discretionary event for tax withholding related to RSU vesting, indicating a neutral sentiment.
Future Outlook
The filing does not contain any forward-looking statements or guidance regarding the company's future performance or strategic direction.
Industry Context
This filing is a routine insider transaction report, common across all industries for executives receiving equity compensation. It does not provide specific insights into broader industry trends or competitive landscape.
Corporate Governance
| Change Type | Description | Effective Date | Impact Assessment |
|---|---|---|---|
| Power of Attorney Grant | Masoud Toloue granted a Power of Attorney to specific individuals, including company and legal firm representatives, to execute and file Forms 3, 4, and 5 on his behalf. This ensures timely and compliant reporting of insider transactions. | 2021-06-08 | Enhances efficiency and compliance for insider reporting requirements by delegating administrative tasks to authorized agents. |
Stakeholder Impact
- Shareholders: Minimal direct impact as this is a routine, non-discretionary transaction for tax purposes, not a discretionary sale of shares.
Key Dates
| Date | Description |
|---|---|
| 2021-06-08 | Date of Power of Attorney granting authority to execute SEC filings on behalf of Masoud Toloue. |
| 2025-09-30 | Date of the reported transaction where shares were disposed of for tax obligations. |
| 2025-10-02 | Date the Form 4 filing was signed and submitted to the SEC. |
Keywords
Quanterix, QTRX, Masoud Toloue, Insider Transaction, Form 4, RSU Vesting, Tax Withholding, Equity Compensation
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