X0508 4 2025-11-20 false 0001503274 Quanterix Corp QTRX 0002098803 Sachs Alan Bruce C/O QUANTERIX CORPORATION 900 MIDDLESEX TURNPIKE BILLERICA MA 01821 true false false false false Common Stock 2025-11-20 4 A false 46727.00 A 46727.00 D Represents the number of shares of common stock issuable on the vesting of restricted stock units ("RSUs"). The RSUs vest as to one-third of the total number of shares on each of November 20, 2026, November 20, 2027 and November 20, 2028, subject to the Reporting Person's provision of service to the Issuer on each vesting date. /s/ Bonnie McManus, Attorney-in-Fact 2025-12-04