Masoud Toloue - Nov 15, 2025 Form 4 Insider Report for Quanterix Corp (QTRX)

Role
President & CEO, Director
Signature
/s/ Brian Keane, as Attorney-in-Fact
Stock symbol
QTRX
Transactions as of
Nov 15, 2025
Transactions value $
-$7,129
Form type
4
Date filed
11/24/2025, 02:51 PM
Previous filing
Nov 5, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Toloue Masoud President & CEO, Director C/O QUANTERIX CORPORATION, 900 MIDDLESEX TURNPIKE, BILLERICA /s/ Brian Keane, as Attorney-in-Fact 2025-11-17 0001867276

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction QTRX Common Stock Tax liability -$7.13K -1.24K -0.24% $5.74 510K Nov 15, 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares withheld by Quanterix Corporation solely to cover tax obligations upon vesting of 2,480 restricted stock units (RSUs).
F2 Includes 216,606 RSUs.