Form 4: Quanterix CEO's Pre-Planned Stock Disposition for Tax

Quanterix CEO Masoud Toloue reported a pre-planned disposition of 254 common shares to cover tax obligations related to RSU vesting.

Summary

• Masoud Toloue, President & CEO and Director of Quanterix Corp (QTRX), reported a pre-planned transaction on October 31, 2025, under a Rule 10b5-1 plan.
• The transaction involved the disposition of 254 shares of common stock.
• These shares were withheld by Quanterix Corporation solely to cover tax obligations arising from the vesting of 761 restricted stock units (RSUs).
• The shares were disposed of at a price of $5.34 per share.
• Following this transaction, Mr. Toloue beneficially owns 511,442 shares, which includes 219,086 restricted stock units.

Sentiment

Score: 5

Explanation: The filing is a routine compliance document reporting a standard executive compensation-related transaction with no material positive or negative implications for the company's operations or financial health.

Positives

• The transaction is a routine event for executive compensation and tax compliance, indicating normal corporate operations.
• The transaction was pre-planned under a Rule 10b5-1 plan, demonstrating adherence to insider trading regulations.

Negatives

• No specific negative operational or financial impacts are indicated by this routine tax-related disposition.

Risks

• No specific risks are mentioned in this compliance filing.

Future Outlook

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

Management Comments

• Shares withheld by Quanterix Corporation solely to cover tax obligations upon vesting of 761 restricted stock units (RSUs).

Industry Context

This routine insider transaction, pre-planned under a Rule 10b5-1 plan, is a standard part of executive compensation and tax compliance, common across publicly traded companies, and does not reflect broader industry trends or competitive dynamics.

Comparison to Industry Standards

• This transaction is a standard practice for executives in publicly traded companies to cover tax liabilities upon the vesting of restricted stock units, aligning with common industry compensation and tax compliance procedures.
• The use of a Rule 10b5-1 plan for this transaction is a widely adopted corporate governance practice to manage insider stock transactions and mitigate potential insider trading concerns.

Management Changes

Corporate Governance

Legal Proceedings

• No legal proceedings or regulatory matters are mentioned in this filing.

Related Party Transactions

• The transaction involves the disposition of shares to the issuer (Quanterix Corporation) to cover tax obligations, which is a standard compensation-related event and not a related party transaction in the context of unusual dealings.

Stakeholder Impact

• Shareholders: Minimal impact, as it's a routine tax-related transaction by an executive, pre-planned under a 10b5-1 plan.
• Employees: No direct impact on employees.
• Customers: No direct impact on customers.
• Suppliers: No direct impact on suppliers.
• Creditors: No direct impact on creditors.

Next Steps

• No specific future actions or milestones are mentioned in this compliance filing.

Key Dates

Keywords

Quanterix, QTRX, Masoud Toloue, Form 4, Insider Transaction, Stock Disposition, RSU Vesting, Tax Withholding, Beneficial Ownership, 10b5-1 Plan