Vandana Sriram - 16 Jan 2026 Form 4 Insider Report for Quanterix Corp (QTRX)

Role
Chief Financial Officer
Signature
/s/ Bonnie McManus, as Attorney-in-Fact
Issuer symbol
QTRX
Transactions as of
16 Jan 2026
Net transactions value
-$2,178
Form type
4
Filing time
20 Jan 2026, 16:37:23 UTC
Previous filing
18 Dec 2025
Next filing
06 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sriram Vandana Chief Financial Officer C/O QUANTERIX CORPORATION, 900 MIDDLESEX TURNPIKE, BILLERICA /s/ Bonnie McManus, as Attorney-in-Fact 20 Jan 2026 0001908223

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction QTRX Common Stock Tax liability $2,178 -274 -0.32% $7.95 86,013 15 Jan 2026 Direct F1, F2, F3
* 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 777 restricted stock units (RSUs).
F2 Includes 68,562 RSUs.
F3 QTRX year-end reconciliation revealed a variance of 310 shares. Corrected balance as shown