FORM 10-Q_________________________________________________ (Mark One) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 QUANTERIX CORPORATION (Exact name of registrant as specified in its charter)_________________________________________________________________ Name of each exchange on which registered: Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during thepreceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T(§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).YesNo 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 emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of theExchange Act. 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 revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).YesNo As of April30, 2026, the registrant had 47,105,981 shares of common stock outstanding. QUANTERIX CORPORATIONINDEX TO FORM 10-Q Note Regarding Forward-Looking Statements PART I — FINANCIAL INFORMATIONItem 1. Financial Statements (Unaudited)4Consolidated Balance Sheets4Consolidated Statements of Operations5Consolidated Statements of Comprehensive Loss6Consolidated Statements of Cash Flows7Notes to Consolidated Financial Statements8Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations29Item 3. Quantitative and Qualitative Disclosures About Market Risk36Item 4. Controls and Procedures37 Item 1. Legal Proceedings38Item 1A. Risk Factors38Item 2. Unregistered Sales of Equity Securities, Use of Proceeds, and Issuer Purchases of Equity Securities38Item 3. Defaults Upon Senior Securities38Item 4. Mine Safety Disclosures38Item 5. Other Information38Item 6. Exhibits39 Signatures Unless the context otherwise requires, the terms “Quanterix,” the “Company,” “we,” “it,” “us,” and “our” in this QuarterlyReport on Form 10-Q refer to Quanterix Corporation and its consolidated subsidiaries. NOTE REGARDING FORWARD-LOOKING STATEMENTS This Quarterly Report on Form 10-Q contains forward-looking statements (within the meaning of the U.S. Private SecuritiesLitigation Reform Act of 1995) that involve risks and uncertainties. All statements other than statements of historical facts contained inthis Quarterly Report on Form 10-Q are forward-looking statements. In some cases, forward-looking statements can be identified bywords such as “anticipate,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,”“predict,” “project,” “seek,” “should,” “target,” “will,” “would,” or the negative of these words, or other comparable terminology.These forward-looking statements include, but are not limited to, statements related to our financial performance and statementsrelated to our expectations about the development and commercialization of our products and about the benefits we may realize fromour acquisition of Akoya Biosciences, Inc. and are subject to a number of risks, uncertainties, and assumptions, including those furtherdescribed in the section titled “Part II, Item 1A. Risk Factors” of this Quarterly Report on Form 10-Q and in the section titled “Part I,Item 1A. Risk Factors” of our Annual Report on Form 10-K for the year ended December31, 2025, as filed with the U.S Securitiesand Exchange Commission (the “SEC”) on March 2, 2026, or in other filings that we make with the SEC. Moreover, we operate in avery competitive and rapidly changing environment and new risks emerge from time to time. It is not possible for us to predict allrisks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, maycause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks,uncertainties, and assumptions, the forward-looking events and circumstances discussed in this Quarterly Report on Form 10-Q maynot occur and actual results could differ materially and adversely from those