Masoud Toloue - 09 Jun 2025 Form 4 Insider Report for Quanterix Corp (QTRX)

Role: President & CEO, Director
Signature: /s/ Brian Keane, as Attorney-in-Fact
Issuer symbol: QTRX
Transactions as of: 09 Jun 2025
Net transactions value: +$248,723
Form type: 4
Filing time: 10 Jun 2025, 16:08:44 UTC
Previous filing: 03 Jun 2025
Next filing: 17 Jun 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	10 Jun 2025	0001867276

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	QTRX	Common Stock	Purchase	$248,723	+45,900	+9.7%	$5.42	518,922	09 Jun 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This transaction was executed in multiple trades at prices ranging from $5.38 to $5.42. The price reported reflects the weighted average sale price. The reporting person undertakes to provide upon request to the SEC staff, the issuer or any security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
F2	Includes 245,501 restricted stock units.