Scott Mendel - 08 Jul 2025 Form 4 Insider Report for Quanterix Corp (QTRX)

Role: Director
Signature: /s/ Brian Keane, as Attorney-in-Fact
Issuer symbol: QTRX
Transactions as of: 08 Jul 2025
Net transactions value: $0
Form type: 4
Filing time: 10 Jul 2025, 20:39:15 UTC
Previous filing: 21 May 2025
Next filing: 03 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mendel Scott	Director	C/O QUANTERIX CORPORATION, 900 MIDDLESEX TURNPIKE, BILLERICA	/s/ Brian Keane, as Attorney-in-Fact	10 Jul 2025	0001515051

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	QTRX	Common Stock	Award		+4,189			4,189	08 Jul 2025	Direct	F1
transaction	QTRX	Common Stock	Award	$0	+24,464	+584%	$0.000000	28,653	08 Jul 2025	Direct	F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	QTRX	Stock Option (right to buy)	Award	$0	+50,758		$0.000000	50,758	08 Jul 2025	Common Stock	50,578	$6.54	Direct	F4

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

Explanation of Responses:

Id	Content
F1	Received in exchange for 28,500 shares of Akoya Biosciences, Inc. ("Akoya") common stock in connection with the acquisition of Akoya by Quanterix on July 8, 2025. Mr. Mendel received: (a) 0.1470 of a share of Quanterix common stock and (b) $0.37 in cash, for each share of Akoya common stock. The closing price of the Quanterix common stock on July 8, 2025 was $6.54 per share. The closing price of the Akoya common stock on July 7, 2025 was $1.29 per share.
F2	Represents shares of stock issuable on vesting of restricted stock units. The restricted stock units vest as to one-third of the shares on each of July 8, 2026, July 8, 2027 and July 8, 2028.
F3	Includes 24,464 restricted stock units.
F4	The option vests as to one-third of the shares on July 8, 2026, and the remaining two-thirds of the shares vest monthly thereafter over two years in 24 successive equal installments.