Sriram Vandana 4

What Happened
Sriram Vandana, Chief Financial Officer of Quanterix Corp (QTRX), had restricted stock units (RSUs) convert into common stock on March 15, 2026. A total of 1,833 shares converted (263 + 514 + 1,056). To satisfy tax withholding, 645 shares were surrendered/treated as disposed at $4.72 per share, generating $3,044 to cover tax obligations. The remaining net shares issued to Vandana equal approximately 1,188 shares (1,833 converted minus 645 withheld). This was a compensation vesting/conversion event rather than an open-market purchase or a discretionary sale.

Key Details

• Transaction date: March 15, 2026; Form 4 filed March 16, 2026 (timely).
• Conversions (code M): 263, 514, and 1,056 RSUs converted into common stock (total 1,833).
• Tax withholding (code F): 93, 181, and 371 shares withheld at $4.72/share (total 645 shares; $3,044).
• Net shares received by insider (approx.): 1,188 shares.
• Footnotes: F1–F4 indicate these were RSUs converting 1-for-1; grants originated Aug 21, 2023 (12,624 RSUs), Feb 2, 2024 (24,675 RSUs), and Feb 4, 2025 (50,712 RSUs) with standard vesting schedules noted.
• Shares owned after transaction: not specified in the provided filing.
• Codes explained: M = exercise/conversion of derivative (here, RSU conversion); F = shares withheld/sold to satisfy tax withholding.

Context

• This is a routine, compensation-related vesting/settlement (net-share settlement for taxes), not an open-market sale or purchase. Such transactions are common when RSUs vest and typically do not by themselves indicate the insider’s market view.