X0508 4 2025-09-15 false 0001503274 Quanterix Corp QTRX 0001867276 Toloue Masoud C/O QUANTERIX CORPORATION 900 MIDDLESEX TURNPIKE BILLERICA MA 01821 true true false false President & CEO false Common Stock 2025-09-15 4 F false 1242.00 4.97 D 513192.00 D Shares withheld by Quanterix Corporation solely to cover tax obligations upon the vesting of 3,722 RSUs. Includes 224,330 restricted stock units. /s/ Brian Keane, as Attorney-in-Fact 2025-09-17