Alan Bruce Sachs - 02 Jan 2026 Form 4 Insider Report for Quanterix Corp (QTRX)

Reporting relationship: Director
Issuer ticker: QTRX
Reported as of: 02 Jan 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Jan 2026, 17:49:20 UTC
Prior SEC filing: 08 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Bonnie McManus, Attorney-in-Fact

Key filing fact

Alan Bruce Sachs filed Form 4 for Quanterix Corp (QTRX) on 06 Jan 2026.

Key facts

This page summarizes Alan Bruce Sachs's Form 4 filing for Quanterix Corp (QTRX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 06 Jan 2026, 17:49.

Change

Previous filing in this sequence was filed on 08 Dec 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002098803 Primary reporting owner

Sachs Alan Bruce

Relationship: Director
Address: C/O QUANTERIX CORPORATION, 900 MIDDLESEX TURNPIKE, BILLERICA
Signature: /s/ Bonnie McManus, Attorney-in-Fact
Signature date: 06 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QTRX transaction

Common Stock

Award

Transaction value: $0
Shares: +23,372
Change %: +50%
Price: $0.000000
Shares after: 70,099
Date: 02 Jan 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents restricted stock units that vest as to 100% of the shares on January 2, 2027 granted pursuant to the Quanterix Corporation Amended and Restated Non-Employee Director Compensation Policy. Each restricted stock unit represents the right to receive one share of the Issuer's common stock.

Footnote F2

Includes 70,099 restricted stock units.