Quanterix (QTRX) director receives 3,456-share stock grant for board service

Rhea-AI Filing Summary

Mendel Scott reported acquisition or exercise transactions in this Form 4 filing.

Quanterix Corp director Scott Mendel received a stock grant as board compensation. He was awarded 3,456 shares of Common Stock at a reference price of $4.34 per share, issued in lieu of cash fees for his service on the Board and its committees for the second quarter of 2026. Following this grant, he holds 16,837 common shares directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Mendel Scott

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,456	$4.34	$15K

Holdings After Transaction: Common Stock — 16,837 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Stock grant: 3,456 shares Reference price per share: $4.34/share Holdings after grant: 16,837 shares

3 metrics

Stock grant 3,456 shares Common Stock granted in lieu of cash fees for Q2 2026 Board service

Reference price per share $4.34/share Value reported for the 3,456-share grant

Holdings after grant 16,837 shares Total Quanterix Common Stock held directly by Scott Mendel after transaction

Key Terms

Grant, award, or other acquisition, Common Stock, stock granted in lieu of cash fees

3 terms

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

stock granted in lieu of cash fees financial

"Consists of stock granted in lieu of cash fees for service"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/02/2026 - 04:04 PM Accepted by SEC EDGAR 07/02/2026 - 04:03 PM Learn about SEC filing dates

FAQ

What insider transaction did Quanterix Corp (QTRX) report for Scott Mendel?

Quanterix reported that director Scott Mendel received a grant of 3,456 shares of Common Stock. The shares were issued as compensation for his Board and committee service for the second quarter of 2026, rather than paying those fees in cash.

Was the Quanterix (QTRX) Scott Mendel transaction an open-market purchase or a stock grant?

The transaction was a stock grant, not an open-market purchase. The Form 4 shows code “A” for a grant, award, or other acquisition, with shares granted in lieu of cash fees for Mendel’s Board and committee service in the second quarter of 2026.

How many Quanterix (QTRX) shares did Scott Mendel hold after this Form 4 transaction?

After the stock grant, Scott Mendel held 16,837 shares of Quanterix Common Stock directly. This total reflects his position immediately following the award of 3,456 shares granted as non-cash compensation for his Board and committee service in the second quarter of 2026.

What price per share was used for Scott Mendel’s Quanterix (QTRX) stock grant?

The filing reports a price of $4.34 per share for the 3,456-share grant. This figure is a reference value used in the Form 4 disclosure and is tied to the stock awarded in lieu of cash fees for Mendel’s second-quarter 2026 Board service.

Why did Quanterix (QTRX) grant stock to Scott Mendel instead of paying cash fees?

The footnote explains that the shares consist of stock granted in lieu of cash fees. They cover compensation for Scott Mendel’s service on Quanterix’s Board of Directors and its committees for the second quarter of 2026, replacing what would otherwise have been cash payments.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Mendel Scott

(Last) (First) (Middle)

C/O QUANTERIX CORPORATION

900 MIDDLESEX TURNPIKE

(Street)

BILLERICA MASSACHUSETTS 01821

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/01/2026		A		3,456(1)	A	$4.34	16,837	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the second quarter of 2026.

Remarks:

	/s/ Meghan Shevlin, Attorney-in-Fact	07/02/2026
	** 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 4 (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.
* Form 4: SEC 1474 (03-26)