Masoud Toloue - Sep 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
Sep 15, 2025
Transactions value $
-$6,173
Form type
4
Date filed
9/17/2025, 08:10 PM
Previous filing
Sep 3, 2025
Next filing
Oct 2, 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 2025-09-17 0001867276

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction QTRX Common Stock Tax liability -$6.17K -1.24K -0.24% $4.97 513K Sep 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 the vesting of 3,722 RSUs.
F2 Includes 224,330 restricted stock units.