X0306 4 2022-04-25 false 0001503274 Quanterix Corp QTRX 0001867276 Toloue Masoud C/O QUANTERIX CORPORATION 900 MIDDLESEX TURNPIKE BILLERCIA MA 01821 true true false false President & CEO Common Stock 2022-04-25 4 A false 36562.00 0.00 A 87265.00 D Stock Options (Right to buy) 24.40 2022-04-25 4 A false 85312.00 0.00 A 2032-04-25 Common Stock 85312.00 85312.00 D Represents shares of stock issuable upon vesting of restricted stock units (RSUs). The RSUs vest as to 25% of the shares on April 25, 2023, with the remaining 75% vesting in 36 equal monthly installments at the end of each month thereafter beginning on April 30, 2023. Includes 87,265 restricted stock units. The option vests as to 25% of the shares on April 25, 2023, and the remaining 75% vests in 36 equal monthly installments at the end of each month beginning on April 30, 2023. /s/ Brian Keane, as Attorney-in-Fact 2022-04-27