X0306 4 2018-06-05 false 0001503274 Quanterix Corp QTRX 0001724369 Orticerio Ernest C/O QUANTERIX CORPORATION, 113 HARTWELL AVENUE LEXINGTON MA 02421 false true false false SVP Finance and Corporate Dev Common Stock 2018-06-05 4 M false 25000.00 2.28 A 78802.00 D Common Stock 2018-06-05 4 S false 25000.00 17.1453 D 53802.00 D Stock Option (Right to Buy) 2.28 2018-06-05 4 M false 25000.00 0.00 D 2022-02-03 Common Stock 25000.00 21670.00 D Includes 7,131 restricted stock units that vest as to 25% of the shares on May 10, 2019 and as to an additional 2.083% of the shares per month for 36 months thereafter. Vests 23,335 share(s) on 02-Jan-2013, 1,944 share(s) on 31-Jan-2013, 1,944 share(s) on 28-Feb-2013, 1,944 share(s) on 31-Mar-2013, 1,944 share(s) on 30-Apr-2013, 1,944 share(s) on 31-May-2013, 1,944 share(s) on 30-Jun-2013, 1,944 share(s) on 31-Jul-2013, 1,944 share(s) on 31-Aug-2013, 1,944 share(s) on 30-Sep-2013, 1,944 share(s) on 31-Oct-2013, 1,046 share(s) on 30-Nov-2013, 1,944 share(s) on 31-Jan-2014, 1,944 share(s) on 28-Feb-2014, 1,944 share(s) on 31-Mar-2014, 1,944 share(s) on 30-Apr-2014, 1,944 share(s) on 31-May-2014, 1,944 share(s) on 30-Jun-2014, 1,944 share(s) on 31-Jul-2014, 1,944 share(s) on 31-Aug-2014, 1,944 share(s) on 30-Sep-2014, 1,944 share(s) on 31-Oct-2014, 1,944 share(s) on 30-Nov-2014, 1,944 share(s) on 31-Dec-2014, 1,944 share(s) on 31-Jan-2015, 1,944 share(s) on 28-Feb-2015, 1,944 share(s) on 31-Mar-2015, 1,944 share(s) on 30-Apr-2015, 1,944 share(s) on 31-May-2015, 1,944 share(s) on 30-Jun-2015, 1,944 share(s) on 31-Jul-2015, 1,944 share(s) on 31-Aug-2015, 1 /s/ Brian Keane, as Attorney-in-Fact 2018-06-05