Quanterix CFO awarded 141,820 restricted stock units

Quanterix Corp granted its Chief Financial Officer, Jason F. Faessler, 141,820 restricted stock units on July 15, 2026.

Rhea-AI Filing Summary

Quanterix Corp granted its Chief Financial Officer, Jason F. Faessler, 141,820 restricted stock units on July 15, 2026. These RSUs convert into common stock and vest in four equal annual installments on each of the first four anniversaries of the grant date, contingent on his continued employment. Following this award, he reports direct beneficial ownership of 141,820

Insider Trade Summary

Grant/Award: 141,820 shares

Grant/Award 1 txn

Insider Faessler Jason F.

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit F1	141,820	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 141,820 contracts (Direct)

Footnotes (1)

1. F1. On July 15, 2026, the reporting person was granted 141,820 restricted stock units. The RSUs vest in four equal annual installments on the first four anniversaries of the grant date, subject to the reporting person's continued employment with the issuer or one of its subsidiaries through the vesting dates.

Key Figures

RSUs granted: 141,820 units Post-grant RSU holdings: 141,820 units Grant price: $0.00 per unit +1 more

4 metrics

RSUs granted 141,820 units Restricted stock units granted to CFO on July 15, 2026

Post-grant RSU holdings 141,820 units Total direct beneficial RSU position reported after the award

Grant price $0.00 per unit Reported transaction price per restricted stock unit

Vesting schedule 4 equal annual installments Vesting on the first four anniversaries of the July 15, 2026 grant

Key Terms

Restricted Stock Unit, vest in four equal annual installments, continued employment

3 terms

Restricted Stock Unit financial

"the reporting person was granted 141,820 restricted stock units"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

vest in four equal annual installments financial

"The RSUs vest in four equal annual installments"

continued employment financial

"subject to the reporting person's continued employment"

Continued employment means that an individual remains in their current job without interruption. For investors, it signals stability and ongoing work that can affect company performance and future prospects. Like a steady heartbeat for a business, sustained employment helps ensure consistent operations and financial health.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Quanterix (QTRX) report for CFO Jason F. Faessler?

Quanterix reported that CFO Jason F. Faessler received a grant of 141,820 restricted stock units on July 15, 2026. These RSUs are a form of equity compensation tied to the company’s common stock and vest over four years.

How many restricted stock units were granted to the Quanterix (QTRX) CFO?

The Quanterix CFO was granted 141,820 restricted stock units (RSUs). Each RSU represents a right to receive one share of Quanterix common stock, subject to the vesting schedule and continued employment requirements described in the award terms.

What is the vesting schedule for the 141,820 RSUs granted by Quanterix (QTRX)?

The 141,820 RSUs vest in four equal annual installments. Vesting occurs on each of the first four anniversaries of the July 15, 2026 grant date, assuming Jason F. Faessler remains employed by Quanterix or one of its subsidiaries on each vesting date.

Does the Quanterix (QTRX) CFO pay a purchase price for these restricted stock units?

No purchase price is indicated; the RSUs were granted at $0.00 per unit. This reflects a typical equity compensation structure where the executive receives the award without paying cash, subject to vesting and service conditions.

What are Jason F. Faessler’s reported RSU holdings in Quanterix (QTRX) after this grant?

After the grant, Jason F. Faessler reports 141,820 restricted stock units as his direct beneficial holdings. These RSUs are tied to Quanterix common stock and will convert into shares only as they vest over the four-year schedule.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 07/16/2026 - 05:31 PM EDT Learn about SEC filing dates

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^*

Faessler Jason F.

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026

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

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
Restricted Stock Unit	$0.00	07/15/2026		A		141,820		(1)	(1)	Common Stock	141,820	$0.00	141,820	D

Explanation of Responses:

1. On July 15, 2026, the reporting person was granted 141,820 restricted stock units. The RSUs vest in four equal annual installments on the first four anniversaries of the grant date, subject to the reporting person's continued employment with the issuer or one of its subsidiaries through the vesting dates.

Remarks:

	/s/ Meghan Shevlin, Attorney-in-Fact	07/16/2026
	** 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)