# EDGAR Filing Document

**Accession Number:** 0001503274
**File Stem:** 0001104659-23-028987
**Filing Date:** 2023-3
**Character Count:** 18838
**Document Hash:** 47fa46aab1d057802474c8c5542326b2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-028987.hdr.sgml**: 20230306

**ACCESSION NUMBER**: 0001104659-23-028987

**CONFORMED SUBMISSION TYPE**: S-8

**PUBLIC DOCUMENT COUNT**: 5

**FILED AS OF DATE**: 20230306

**DATE AS OF CHANGE**: 20230306

**EFFECTIVENESS DATE**: 20230306

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Quanterix Corp
- **CENTRAL INDEX KEY:** 0001503274
- **STANDARD INDUSTRIAL CLASSIFICATION:** LABORATORY ANALYTICAL INSTRUMENTS [3826]
- **IRS NUMBER:** 208957988
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-270295
- **FILM NUMBER:** 23708864

**BUSINESS ADDRESS:**
- **STREET 1:** 900 MIDDLESEX TURNPIKE
- **CITY:** BILLERICA
- **STATE:** MA
- **ZIP:** 01821
- **BUSINESS PHONE:** 617-301-9400

**MAIL ADDRESS:**
- **STREET 1:** 900 MIDDLESEX TURNPIKE
- **CITY:** BILLERICA
- **STATE:** MA
- **ZIP:** 01821

As filed with the Securities and Exchange Commission on March 6, 2023

Registration No. 333-_____

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM S-8**

**REGISTRATION STATEMENT UNDER**

**THE SECURITIES ACT OF 1933**

**Quanterix Corporation**

(Exact name of registrant as specified in its charter)

---

| | |
|:---|:---|
| **Delaware** | **20-8957988** |
| (State or other jurisdiction of incorporation or<br> organization) | (I.R.S. Employer Identification No.) |
| **900 Middlesex Turnpike** |  |
| **Billerica, MA** | **01821** |
| (Address of Principal Executive Offices) | (Zip Code) |

---

**2017 Employee Stock Purchase Plan**

**2017 Employee, Director and Consultant Equity Incentive Plan**

(Full title of the plans)

**Dr. Masoud Toloue**

**President and Chief Executive Officer**

**Quanterix Corporation**

**900 Middlesex Turnpike**

**Billerica, MA 01821**

**(617) 301-9400**<br> (Name, address and telephone number, including area code, of agent for service)

**Copies to:**

---

| | |
|:---|:---|
| **Catherine A. Dargan, Esq.**<br> **David H. Engvall, Esq.<br> Covington & Burling LLP**<br> **One CityCenter<br> 850 Tenth Street, N.W.<br> Washington, D.C. 20001**<br> **(202) 662-6000** | **Laurie Churchill<br> General Counsel<br> Quanterix Corporation<br> 900 Middlesex Turnpike<br> Billerica, MA 01821<br> (617) 301-9400** |

---

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ◻ Accelerated filer ⌧ <br> Non-accelerated filer ◻ Smaller reporting company ◻ <br> Emerging growth company ◻

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ◻

**EXPLANATORY NOTE**

This Registration Statement registers an aggregate of 1,488,696 additional shares of common stock, par value $0.001 per share ("Common Stock"), of Quanterix Corporation (the "Company" or the "Registrant") under the Registrant's 2017 Employee, Director and Consultant Equity Incentive Plan and 372,174 additional shares of Common Stock under the Registrant's 2017 Employee Stock Purchase Plan, representing increases in the number of shares of Common Stock reserved for issuance under each such plan, in each case effective January 1, 2023 by operation of the "evergreen" provision contained in the applicable plan.

Pursuant to General Instruction E to Form S-8 under the Securities Act of 1933, as amended, the contents of the Registrant's Registration Statements on Form S-8 filed with the U.S. Securities and Exchange Commission (the "Commission") on [March 19, 2018 (File No. 333-223771)](https://www.sec.gov/Archives/edgar/data/1503274/000110465918018647/a18-8207_1s8.htm), [May 10, 2019 (File No. 333-231373](https://www.sec.gov/Archives/edgar/data/1503274/000110465919028607/a19-9565_1s8.htm)), [August 5, 2020 (File No. 333-240420](https://www.sec.gov/Archives/edgar/data/1503274/000110465920090430/tm2026427-1_s8.htm)), [May 12, 2021 (File No. 333-256032](https://www.sec.gov/Archives/edgar/data/1503274/000110465921064971/tm2115296d1_s8.htm)) and [May 10, 2022 (File No. 333-264836](https://www.sec.gov/Archives/edgar/data/1503274/000110465922058285/tm2214759d1_s8.htm)) are incorporated by reference and made part of this Registration Statement. Any items in such registration statements not expressly changed hereby shall be as set forth in such registration statements.

**PART II**

**INFORMATION REQUIRED IN THE REGISTRATION STATEMENT**

**Item 3. Incorporation of Documents by Reference.**

The Company is subject to the informational and reporting requirements of Sections 13(a), 14 and 15(d) of the Securities Exchange Act of 1934 (the "Exchange Act") and in accordance therewith files reports, proxy statements and other information with the Commission. The following documents, which are on file with the Commission, are incorporated in this Registration Statement by reference:

(a) The Company's [Annual Report on Form 10-K for the fiscal year ended December 31, 2022, filed with the Commission on March 6, 2023 (File No. 001-38319)](https://www.sec.gov/ix?doc=/Archives/edgar/data/1503274/000155837023002855/tmb-20221231x10k.htm);

(b) All other reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act since the end of the fiscal year covered by the document referred to in (a) above (other than the portions of those documents not deemed to be filed); and

[(c) The description of Common Stock filed as Exhibit 4.1 to the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed with the Commission on March 13, 2020 (File No. 001-38319).](https://www.sec.gov/Archives/edgar/data/1503274/000155837020002676/qtrx-20191231ex41d7e8c08.htm)

All documents subsequently filed by the Company pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment that indicates that all securities offered hereby have been sold or that deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be part hereof from the date of the filing of such documents.

Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for the purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document that also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

**Item 5. Interests of Named Experts and Counsel.**

The validity of the issuance of the shares of Common Stock registered under this Registration Statement has been passed upon for the Registrant by Covington & Burling LLP.

**Item 8. Exhibits.**

---

| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| &nbsp;&nbsp;&nbsp;[3.1](https://www.sec.gov/Archives/edgar/data/1503274/000110465917073618/a17-28479_1ex3d1.htm) | [Amended and Restated Certificate of Incorporation of the Registrant (incorporated herein by reference to Exhibit 3.1 of the Registrant's Current Report on Form 8-K filed on December 15, 2017).](https://www.sec.gov/Archives/edgar/data/1503274/000110465917073618/a17-28479_1ex3d1.htm) |
| &nbsp;&nbsp;&nbsp;[3.2](https://www.sec.gov/Archives/edgar/data/1503274/000110465917073618/a17-28479_1ex3d2.htm) | [Restated Bylaws of the Registrant (incorporated herein by reference to Exhibit 3.2 of the Registrant's Current Report on Form 8-K filed on December 15, 2017).](https://www.sec.gov/Archives/edgar/data/1503274/000110465917073618/a17-28479_1ex3d2.htm) |
| &nbsp;&nbsp;&nbsp;[4.1](https://www.sec.gov/Archives/edgar/data/1503274/000104746917006947/a2233678zex-4_1.htm) | [Form of Common Stock Certificate of the Registrant (incorporated herein by reference to Exhibit 4.1 of the Registrant's Registration Statement on Form S-1 filed on November 9, 2017).](https://www.sec.gov/Archives/edgar/data/1503274/000104746917006947/a2233678zex-4_1.htm) |
| &nbsp;&nbsp;&nbsp;[5.1\*](tm238291d1_ex5-1.htm) | [Opinion of Covington and Burling LLP.](tm238291d1_ex5-1.htm) |
| &nbsp;&nbsp;&nbsp;[23.1\*](tm238291d1_ex5-1.htm) | [Consent of Covington and Burling LLP (included in Exhibit 5.1).](tm238291d1_ex5-1.htm) |
| &nbsp;&nbsp;&nbsp;[23.2\*](tm238291d1_ex23-2.htm) | [Consent of Ernst & Young LLP.](tm238291d1_ex23-2.htm) |
| &nbsp;&nbsp;&nbsp;[24.1\*](#pwa_001) | [Power of Attorney (included on the signature page of this Registration Statement).](#pwa_001) |
| &nbsp;&nbsp;&nbsp;[99.1](https://www.sec.gov/Archives/edgar/data/1503274/000110465918018647/a18-8207_1ex99d5.htm) | [2017 Employee Stock Purchase Plan (incorporated herein by reference to Exhibit 99.5 of the Registrant's Registration Statement on Form S-8 filed on March 19, 2018).](https://www.sec.gov/Archives/edgar/data/1503274/000110465918018647/a18-8207_1ex99d5.htm) |
| &nbsp;&nbsp;&nbsp;[99.2](https://www.sec.gov/Archives/edgar/data/1503274/000104746917007295/a2233906zex-10_21.htm) | [2017 Employee, Director and Consultant Equity Incentive Plan (incorporated herein by reference to Exhibit 10.2.1 of the Registrant's Registration Statement on Form S-1/A filed on November 27, 2017).](https://www.sec.gov/Archives/edgar/data/1503274/000104746917007295/a2233906zex-10_21.htm) |
| &nbsp;&nbsp;&nbsp;[107\*](tm238291d1_ex-filingfees.htm) | [Filing Fees Exhibit.](tm238291d1_ex-filingfees.htm) |

---

\* Filed herewith.

**SIGNATURES**

*The Registrant.* Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Billerica, Commonwealth of Massachusetts, on March 6, 2023.

---

| | |
|:---|:---|
| QUANTERIX CORPORATION | QUANTERIX CORPORATION |
| By: | /s/ Masoud Toloue |
|  | Masoud Toloue |
|  | *President and Chief Executive Officer* |

---

**SIGNATURES AND POWER OF ATTORNEY**

Each of the directors and officers of Quanterix Corporation whose signature appears below hereby severally constitutes and appoints Masoud Toloue and Michael Doyle and each of them singly, their true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution in each of them singly, for them and in their name, place and stead, and in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement on Form S-8 of Quanterix Corporation, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting to said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite or necessary to be done in or about the premises, as fully to all intents and purposes as they might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them or their substitute may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Signature** | **Title** | **Date** |
| <br> /s/ Masoud Toloue, Ph.D. | President, Chief Executive Officer and Director (principal executive officer) | <br> March 6, 2023 |
| Masoud Toloue, Ph.D. | President, Chief Executive Officer and Director (principal executive officer) | <br> March 6, 2023 |
| /s/ Michael A. Doyle | Chief Financial Officer (principal financial officer and principal accounting officer) | March 6, 2023 |
| Michael A. Doyle | Chief Financial Officer (principal financial officer and principal accounting officer) | March 6, 2023 |
| /s/ Martin D. Madaus, Ph.D. | Chairman | March 6, 2023 |
| Martin D. Madaus, Ph.D. |  |  |
| /s/ Brian J. Blaser | Director | March 6, 2023 |
| Brian J. Blaser |  |  |
| /s/ Keith L. Crandell | Director | March 6, 2023 |
| Keith L. Crandell |  |  |
| /s/ Karen A. Flynn | Director | March 6, 2023 |
| Karen A. Flynn |  |  |
|  | Director |  |
| Sarah E. Hlavinka |  |  |
|  | Director |  |
| Paul M. Meister |  |  |
| /s/ Laurie J. Olson | Director | March 6, 2023 |
| Laurie J. Olson |  |  |
| /s/ David R. Walt, Ph.D. | Director | March 6, 2023 |
| David R. Walt, Ph.D. |  |  |

---

## Exhibit 5.1

**Exhibit 5.1**

![](tm238291d1_ex5-1img002.jpg)

March 6, 2023

Quanterix Corporation

900 Middlesex Turnpike

Billerica, MA 01821

Ladies and Gentlemen:

We have acted as counsel to Quanterix Corporation, a Delaware corporation (the "*Company*"), in connection with the registration by the Company under the Securities Act of 1933, as amended (the "*Act*"), of 1,860,870 shares of the Company's common stock, par value $0.001 per share (the "*Common Stock*"), consisting of 1,488,696 shares of Common Stock (the "*Incentive Plan Shares*") issuable under the Company's 2017 Employee, Director and Consultant Equity Incentive Plan (the "*Incentive Plan*") and 372,174 shares of Common Stock (the "*ESPP Shares*" and, together with the Incentive Plan Shares, the "*Shares*") issuable under the Company's 2017 Employee Stock Purchase Plan (the "*2017 ESPP*"), pursuant to the Registration Statement on Form S-8 filed with the Securities and Exchange Commission on the date hereof (such registration statement is referred to herein as the "*Registration Statement*").

We have reviewed such corporate records, certificates and other documents, and such questions of law, as we have considered necessary or appropriate for the purposes of this opinion. We have assumed that all signatures are genuine, that all documents submitted to us as originals are authentic and that all copies of documents submitted to us conform to the originals.

We have relied as to certain matters on information obtained from public officials, officers of the Company and other sources believed by us to be responsible.

Based upon the foregoing, we are of the opinion that the Incentive Plan Shares and the ESPP Shares have been duly authorized and, when issued and paid for in accordance with the terms of the Incentive Plan and the 2017 ESPP, respectively, and any individual agreements relating to such Shares, the Shares will be validly issued, fully paid and non-assessable.

We are members of the bar of the District of Columbia. We do not express any opinion herein on any laws other than the General Corporation Law of the State of Delaware and reported judicial decisions interpreting these laws.

We hereby consent to the filing of this opinion as Exhibit 5.1 to the Registration Statement. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Act.

---

| |
|:---|
| Very truly yours, |
| /s/ Covington & Burling LLP |

---

## Exhibit 23.2

**Exhibit 23.2**

**Consent of Independent Registered Public Accounting Firm**

We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the 2017 Employee Stock Purchase Plan and the 2017 Employee, Director and Consultant Equity Incentive Plan of Quanterix Corporation of our reports dated March 6, 2023, with respect to the consolidated financial statements of Quanterix Corporation and the effectiveness of internal control over financial reporting of Quanterix Corporation included in its Annual Report (Form 10-K) for the year ended December 31, 2022, filed with the Securities and Exchange Commission.

---

| |
|:---|
| /s/ Ernst & Young LLP |
| Boston, Massachusetts |
| March 6, 2023 |

---

## Ex-Filing

**EXHIBIT 107**

**Calculation of Filing Fee Tables**

Form S-8

(Form Type)

Quanterix Corporation

(Exact Name of Registrant as Specified in its Charter)

Table 1: Newly Registered Securities

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| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Security**<br> **Type** | **Security Class Title** | **Fee**<br> **Calculation**<br> **Rule** | **Amount**<br> **Registered(1)** | **Amount**<br> **Registered(1)** | **Proposed <br> Maximum Offering**<br> **Price Per Unit(2)** | **Maximum<br> Aggregate**<br> **Offering Price(2)** | **Fee**<br> **Rate** | **Amount of**<br> **Registration**<br> **Fee** |
| Equity | Common Stock, par value $0.001 per share, to be issued under the 2017 Employee, Director and Consultant Equity Incentive Plan | Other |  | 1488696 (3) | $11.10 | $16524525.60 | $110.20 per $1,000,000 | $1821.01 |
| Equity | Common Stock, par value $0.001 per share, to be issued under the 2017 Employee Stock Purchase Plan | Other |  | 372174 (4) | $11.10 | $4131131.40 | $110.20 per $1,000,000 | $455.26 |
| **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** | **Total Offering Amounts** |  |  | $20655657.00 |  | $2276.27 |
| **Total Fee Offsets (5)** | **Total Fee Offsets (5)** | **Total Fee Offsets (5)** |  |  |  |  |  | $— |
| **Net Fee Due** | **Net Fee Due** | **Net Fee Due** |  |  |  |  |  | $2276.27 |

---

(1) Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "Securities Act"), this Registration Statement shall also cover any additional shares of the registrant's Common Stock that become issuable in respect of such securities by reason of any stock dividend, stock split, recapitalization or other similar transaction.

(2) Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(c) and Rule 457(h) under the Securities Act, and based upon the average of the high and low prices of the registrant's Common Stock as reported on The Nasdaq Global Market on February 28, 2023.

(3) Represents additional shares of the registrant's Common Stock reserved for issuance under the registrant's 2017 Employee, Director and Consultant Equity Incentive Plan.

(4) Represents additional shares of the registrant's Common Stock reserved for issuance under the registrant's 2017 Employee Stock Purchase Plan.

(5) The registrant does not have any fee offsets.