Form 4: Quanterix CEO Masoud Toloue Reports Tax-Related Share Withholding Following RSU Vesting
Insider Transaction Report
Quanterix Corporation's President and CEO, Masoud Toloue, reported the withholding of 1,242 shares of common stock to cover tax obligations related to the vesting of 3,722 restricted stock units.
Summary
- Masoud Toloue, President & CEO, Director, and 10% Owner of Quanterix Corp (QTRX), reported a transaction involving the company's common stock.
- On July 15, 2025, 1,242 shares of common stock were disposed of at a price of $5.49 per share.
- This disposition was a withholding by Quanterix Corporation solely to cover tax obligations incurred upon the vesting of 3,722 restricted stock units (RSUs).
- Following this transaction, Masoud Toloue beneficially owns 516,184 shares of common stock directly, which includes 233,296 restricted stock units.
Sentiment
Score: 5
Explanation: The transaction is a routine tax withholding upon RSU vesting, which is a neutral event. The underlying vesting is positive, but the withholding itself is a procedural necessity.
Positives
- The underlying event is the vesting of 3,722 restricted stock units, indicating a successful achievement of performance or time-based conditions for equity compensation.
Negatives
- 1,242 shares were withheld, reducing the direct beneficial ownership of common stock, although this is a standard procedure for tax coverage on RSU vesting.
Future Outlook
The document does not provide any forward-looking statements or guidance beyond the transaction details.
Industry Context
This Form 4 filing is a routine disclosure of an insider transaction related to equity compensation and does not provide broader industry context or trends.
Corporate Governance
| Change Type | Description | Effective Date | Impact Assessment |
|---|---|---|---|
| Power of Attorney Grant | Masoud Toloue granted a Power of Attorney to designated individuals, including company and legal firm representatives, to execute and file SEC Forms 3, 4, and 5 on his behalf, ensuring compliance with Section 16(a) of the Securities Exchange Act of 1934. | June 8, 2021 | Enhances efficiency and ensures timely compliance with SEC reporting requirements for insider transactions. |
Stakeholder Impact
- Shareholders: Minimal direct impact from a routine tax withholding. The underlying RSU vesting could be seen as a positive for executive retention and alignment.
Key Dates
| Date | Description |
|---|---|
| June 8, 2021 | Date Power of Attorney was executed by Masoud Toloue. |
| July 15, 2025 | Date of transaction where shares were withheld for tax obligations upon RSU vesting. |
| July 17, 2025 | Date the Form 4 was signed and filed. |
Keywords
Quanterix Corp, QTRX, Masoud Toloue, SEC Form 4, Insider Transaction, Restricted Stock Units, RSU Vesting, Share Withholding, Equity Compensation, Tax Obligations
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