X0306 4 2022-08-12 false 0001503274 Quanterix Corp QTRX 0001284533 DOYLE MICHAEL A C/O QUANTERIX CORPORATION 900 MIDDLESEX TURNPIKE BILLERICA MA 01821 false true false false CFO and Treasurer Common Stock 2022-08-12 4 P false 15000.00 10.4335 A 33614.00 D Common Stock 2022-08-15 4 P false 15000.00 10.1612 A 48614.00 D The purchase of shares reported herein was matchable under Section 16(b) of the Securities Exchange Act of 1934 with Mr. Doyle's sale of 434 shares on July 13, 2022 and 37 shares on August 1, 2022, each of which was made to cover taxes upon the vesting of RSUs. Mr. Doyle has agreed to pay Quanterix Corporation $3,799.15, representing the full amount of the profit realized in connection with the short-swing transaction. This transaction was executed in multiple trades at prices ranging from $10.07 to $10.4974. The price reported reflects the weighted average purchase price. The reporting person undertakes to provide upon request to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. Includes 17,588 restricted stock units. This transaction was executed in multiple trades at prices ranging from $9.73 to $10.41. The price reported reflects the weighted average purchase price. The reporting person undertakes to provide upon request to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Michael Doyle 2022-08-16