SEC FORM 3 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*
Streeter Jackson

(Last) (First) (Middle)
C/O QUANTERIX CORPORATION
113 HARTWELL AVENUE

(Street)
LEXINGTON MA 02421

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
11/12/2018
3. Issuer Name and Ticker or Trading Symbol
Quanterix Corp [ QTRX ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
SVP, Corp Dev & Strategy
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)
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:
No securities are beneficially owned.
/s/ Brian Keane, as Attorney-in-Fact 11/14/2018
** 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.
POWER OF ATTORNEY

	Know all by these present, that the undersigned hereby 
constitutes and appoints each of, Megan Gates, John Condon, Brian 
Shea, Daniel Marden, Jacqueline A. Cannata, Anne T. Leland and Brenda 
L. Meyette of Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C., 
and Brian P. Keane and Joseph Driscoll signing singly, with full 
power of substitution, the undersigned's true and lawful attorney-in-
fact to:

	(1)	execute for and on behalf of the undersigned, forms and 
authentication documents for EDGAR Filing Access;

(2)	do and perform any and all acts for and on behalf of the 
undersigned which may be necessary or desirable to complete 
and execute any such forms and authentication documents;

(3) 	execute for and on behalf of the undersigned, in the 
undersigned's capacity as an officer, director and/or 10% 
shareholder of the Company, Forms 3, 4 and 5 in accordance 
with Section 16(a) of the Securities Exchange Act of 1934 
and the rules thereunder;

	(4)	do and perform any and all acts for and on behalf of the 
undersigned which may be necessary or desirable to complete 
and execute any such Form 3, 4 or 5 and timely file such 
form with the United States Securities and Exchange 
Commission and any stock exchange or similar authority; and

	(5)	take
 any other action of any type whatsoever in connection 
with the foregoing which, in the opinion of such attorney-
in-fact, may be of benefit to, in the best interest of, or 
legally required by, the undersigned, it being understood 
that the documents executed by such attorney-in-fact, on 
behalf of the undersigned pursuant to this Power of 
Attorney, shall be in such form and shall contain such 
terms and conditions as such attorney-in-fact may approve 
in such attorney-in-fact's discretion.

	The undersigned hereby grants to each such attorney-in-fact full 
power and authority to do and perform any and every act and thing 
whatsoever requisite, necessary, or proper to be done in the exercise 
of any of the rights and powers herein granted, as fully to all 
intents and purposes as the undersigned might or could do if 
personally present, with full power of substitution or revocation, 
hereby ratifying and confirming all that such attorney-in-fact, or 
such attorney-in-fact's substitute or substitutes, shall lawfully do 
or cause to be done by virtue of this power of attorney and the 
rights and powers herein granted.  The undersigned acknowledges that 
the foregoing attorneys-in-fact, in serving in such capacity at the 
request of the undersigned, is not assuming, nor is the Company 
assuming, any of the undersigned's responsibilities to comply with 
Section 16 of the Securities Exchange Act of 1934.

	This Power of Attorney shall remain in full force and effect 
until the undersigned is no longer required to file Forms 3, 4 and 5 
with respect to the undersigned's holdings of and transactions in 
securities issued by the Company, unless earlier revoked by the 
undersigned in a signed writing delivered to the foregoing attorneys-
in-fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of 
Attorney to be executed this 1st day of November, 2018.

/s/ Jackson Streeter
Jackson Streeter, M.D.




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