[Form 3] Quanterix Corp Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Quanterix Corp (QTRX) director files initial ownership report showing no holdings. A reporting person serving as a director of Quanterix Corporation has filed an initial Form 3 disclosing their beneficial ownership status as of 11/24/2025. The filing indicates that the director has no non-derivative securities beneficially held, with the amount reported as 0.00 shares held directly. The table for derivative securities is also blank, implying there are no options, warrants, or other derivative positions reported at this time. This is a routine disclosure required when an individual becomes an insider under U.S. securities rules.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Hampton Malcolm Garret

(Last) (First) (Middle)

C/O QUANTERIX CORPORATION

900 MIDDLESEX TURNPIKE

(Street)

BILLERICA MA 01821

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
11/24/2025

3. Issuer Name and Ticker or Trading Symbol
Quanterix Corp [ QTRX ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
No securities beneficially held	0.00	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Bonnie McManus, Attorney-in-Fact	11/20/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does the Quanterix Corp (QTRX) Form 3 filed on 11/24/2025 show?

The Form 3 for Quanterix Corp (QTRX) dated 11/24/2025 shows that the reporting person, who is a director, reported 0.00 non-derivative securities beneficially owned and no derivative securities listed.

What is the relationship of the reporting person to Quanterix Corp (QTRX)?

The reporting person is identified as a Director of Quanterix Corp (QTRX), with no indication that they are a 10% owner, officer, or other type of insider beyond their board role.

How many Quanterix (QTRX) shares does the director report owning on this Form 3?

The director reports no securities beneficially held, with the amount listed as 0.00 in the non-derivative securities table and no derivative positions disclosed.

Does the Quanterix (QTRX) Form 3 report any stock options or other derivative securities?

No. The Table II section for derivative securities such as options, warrants, or convertible securities contains no entries, indicating no derivative securities beneficially owned are reported.

Is this Quanterix (QTRX) Form 3 filed by one person or multiple reporting persons?

The filing indicates that it is a Form filed by one reporting person, not a joint or group filing.

Who signed the Quanterix (QTRX) Form 3 and on what date?

The Form 3 was signed by /s/ Bonnie McManus, Attorney-in-Fact on 11/20/2025, acting on behalf of the reporting person.