Reports $35.0 million in revenue, up 6.3% sequentially, and $80.7 million of cash and marketable securities

Initiatives to accelerate commercial effectiveness position the Company for growth in rest of 2026 and going forward

Quanterix Corporation (NASDAQ: QTRX), a global leader in precision biomarker science, today announced financial results for the third quarter ended September 30, 2026.

“We delivered higher than expected topline growth in the third quarter, with revenues up 6.3% sequentially, despite continued market softness. This first step in restoring growth reflects sequential improvement across all our businesses. The actions we initiated last quarter to improve commercial performance, including reorganizing our teams and adding experienced leadership and discipline, should accelerate our execution in the fourth quarter and beyond,” said Everett Cunningham, President & CEO of Quanterix.

He added, “We are confident about the benefits and differentiated positioning of our research tools and diagnostics businesses, especially with new commercial leadership focused on sustained growth. Our continued innovation in ultra-sensitive protein-detection in blood and high plex spatial analysis in tissue provides us with market advantages in targeted discovery and translational research. Lastly, we have now established a strong foundation for Quanterix in diagnostics, through strategic investments and partnerships, enabling us to focus on achieving key milestones in Alzheimer’s disease testing, with our single-site Alzheimer’s disease five biomarker blood test.”

Third Quarter Financial Highlights

• Revenue of $35.0 million, an increase of 6.3% compared to the second quarter.
• GAAP gross margin of 38.6% down 90 basis points (bps) compared to the prior year. Adjusted gross margin (non-GAAP) of 47.4% up 150 bps vs. the prior year.
• Net loss of $21.6 million, an improvement of 35.6% compared to the prior year. Adjusted EBITDA (non-GAAP) loss of $12.2 million a decline of 2.4% vs. the prior year.
• The Company ended the third quarter with $80.7 million of cash, cash equivalents, marketable securities, and restricted cash.

Operational and Business Highlights

• Quanterix finished building its senior management team for planned growth, especially in the diagnostics business. As previously announced, Jim Gute was named Chief Commercial Officer in mid-August, and Dr. Yuri Fesko was named the company’s first Chief Medical Officer in September, bringing considerable expertise in clinical and regulatory management, which is already benefiting the Company’s commercial efforts.
• Additional milestones to advance clinical adoption of blood-based Alzheimer’s disease testing were announced, including expanded insurance coverage. Beginning November 1, 2026, traditional Medicaid members and state employees in Florida can receive coverage for qualifying blood-based biomarker tests, including Quanterix’s LucentAD® Complete, when medical necessity criteria are met.
• Quanterix added two new commercial partnerships with key regional full-service clinical reference labs, Sherman Abrams Lab in New York and TruPath in Mississippi. These relationships are underway and generating opportunities for diagnostics revenue, adding to existing partnerships.
• New regulatory approvals advanced access to neurology biomarker testing in China based upon Quanterix’s HD-X and SR-X instruments and testing kits for four biomarkers. Innovita Biological Technology Co., a leading Chinese diagnostics company, is broadening access to blood biomarker testing in China, as part of our strategy to bring our SIMOA®--powered diagnostics capabilities to large markets worldwide by working with strong regional commercial partners.
• Quanterix launched additional assay menu options for its SIMOA® platform, as part of a commitment to expanding research tools on new biomarkers for Alzheimer’s and other neurodegenerative diseases.
• Underscoring Quanterix’s leadership in spatial biology through its Content Innovation Engine, the Company announced three new spatial products at the European Society for Spatial Biology meeting in September. The PhenoCode™ 2.0 Molecular Barcoding Kit is now in full commercial release, enabling researchers to barcode virtually any antibody in applications spanning immuno-oncology, neuroscience and other areas. The TIME panel, providing a broader view of the tumor immune microenvironment, and a high-plex ADC panel that enables co-measurement of ADC target expression alongside tumor immune contexture within a single tissue section, addressing demand for combination biology readouts, are both shipping in early 2027.
• Quanterix’s Accelerator Lab is now accepting requests for custom ADC panel development, widening access to the strength of its ADC combination biology fully managed service for biopharma and translational teams.

2026 Business Outlook

Quanterix is narrowing its expectations for total revenues to $142-146 million. The Company continues to expect adjusted gross margins (non-GAAP) in a range of 48-50%. Quanterix now expects to end 2026 with a cash balance of approximately $70 million, and no debt.

Conference Call

In conjunction with this announcement, the Company will host a conference call today, November 9, 2026, at 8:30 AM ET. The dial-in number for USA & Canada is Toll-Free (800) 715-9871 or (646) 307-1963 and the conference ID is 3290884.

Interested investors can also listen to the live webcast from the Event Details page in the Investors section of the Quanterix website at https://ir.quanterix.com. An archived webcast replay will be available on the Company’s website for one year.

About Quanterix

Quanterix is a global leader in precision biomarker science, making biology measurable to deliver earlier insights and support breakthroughs in disease research, diagnostics, and drug development. Its SIMOA® technology delivers industry-leading sensitivity, allowing researchers to detect and quantify biomarkers in blood and other fluids at concentrations far below traditional limits. Through the acquisition of Akoya Biosciences, Quanterix Spatial solutions deliver high-plex, quantitative protein analysis in tissue at single-cell resolution. Combined with Accelerator Laboratory services, Quanterix gives researchers the tools and expertise to translate discovery into precision diagnostics. Learn more at www.quanterix.com.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

Statements included in this press release that are not historical in nature or do not relate to current facts are intended to be, and are hereby identified as, forward-looking statements for purposes of the safe harbor provided by Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include, among other things, statements about Quanterix’s future business outlook, operations, strategy and financial performance, including statements related to our expectations about revenue growth, market advantages in translational research, opportunities for diagnostics revenue, expanded reimbursement for and access to blood biomarker testing, and under the header “2026 Business Outlook.” Words and phrases such as “may,” “approximately,” “continue,” “should,” “expects,” “projects,” “anticipates,” “is likely,” “look ahead,” “look forward,” “believes,” “will,” “intends,” “estimates,” “strategy,” “plan,” “could,” “potential,” “possible” and variations of such words and similar expressions are intended to identify such forward-looking statements. Forward-looking statements are subject to certain risks and uncertainties that are difficult to predict with regard to, among other things, timing, extent, likelihood and degree of occurrence, which could cause actual results to differ materially from anticipated results. Such risks and uncertainties include, among others, the following possibilities with respect to Quanterix’s future business, operations, strategy and financial performance: risks related to the impact of changes in U.S. government policies, including impacts of tariffs and reductions in federal research funding; risks associated with the anticipated timing for launch of, and features of, Quanterix’s next-generation instruments to upgrade its existing platforms; risks related to Quanterix’s ability to improve existing diagnostics and develop new diagnostic tests and tools; risks related to Quanterix’s ability to successfully penetrate the diagnostics market; risks related to Quanterix’s ability to retain and expand its customer base and achieve sufficient market acceptance of its products; risks related to the ability of Quanterix’s contract manufacturers and suppliers to reliably and consistently manufacture and supply our instruments; risks that Quanterix may fail to realize the anticipated benefits from its recent acquisitions of Emission, Inc. and Akoya Biosciences Inc.; risks that Quanterix’s estimates regarding expenses, future revenues, capital requirements, and needs for additional financing could be incorrect; risks related to Quanterix’s ability to maintain effective internal control over financial reporting and disclosure controls and procedures; and risks related to defects or other quality issues in Quanterix’s products that could lead to unforeseen costs, product recalls, adverse regulatory actions, negative publicity and litigation. Additional factors that could cause results to differ materially from those described above can be found in the periodic reports filed by Quanterix with the SEC, including the “Risk Factors” sections contained therein, which are available on the SEC’s website at www.sec.gov.

All forward-looking statements, expressed or implied, included in this press release are expressly qualified in their entirety by the cautionary statements contained or referred to herein. If one or more events related to these or other risks or uncertainties materialize, or if Quanterix’s underlying assumptions prove to be incorrect, actual results may differ materially from what Quanterix anticipates. Quanterix cautions readers not to place undue reliance on any such forward-looking statements, which speak only as of the date they are made and are based on information available at that time. Quanterix does not assume any obligation to update or otherwise revise any forward-looking statements to reflect circumstances or events that occur after the date the forward-looking statements were made or to reflect the occurrence of unanticipated events except as required by federal securities laws.

FINANCIAL HIGHLIGHTS

Use of Non-GAAP Financial Measures

To supplement our financial statements presented on a U.S. GAAP basis, we present the following non-GAAP financial measures:

• Adjusted EBITDA and adjusted EBITDA margin: We define adjusted EBITDA as net income (loss) adjusted to exclude interest income, income tax (expense) benefit, depreciation and amortization expense, stock-based compensation expense, acquisition and integration related costs, impairments, and certain other items which include other charges or benefits resulting from transactions or events that are unusual or infrequent, significant in size, and that we do not believe are indicative of ongoing or future business operations. These items are discussed in more detail below the tables reconciling the GAAP to non-GAAP measures. Adjusted EBITDA margin is calculated as adjusted EBITDA divided by total revenues.
• Adjusted gross profit, adjusted gross margin, adjusted total operating expenses, and adjusted loss from operations: We calculate these non-GAAP financial measures by excluding amortization of certain acquired intangible assets, acquisition and integration related costs, impairments, and certain other items which include other charges or benefits resulting from transactions or events that are unusual or infrequent, significant in size, and that we do not believe are indicative of ongoing or future business operations. Adjusted gross margin is calculated as adjusted gross profit divided by total revenues.
  
  During the first quarter of 2026, we changed our accounting policy for classifying shipping and handling costs for product sales and they are now recorded in cost of product revenue. Historically, these shipping and handling costs were recorded in selling, general and administrative expenses, and we calculated our non-GAAP financial measures by including these shipping and handling costs within cost of product revenue. We applied this change in accounting policy retrospectively to all periods presented, and no longer reclassify shipping and handling costs in our non-GAAP financial measures.

We believe that presentation of these non-GAAP financial measures provides supplemental information useful to investors in understanding our underlying operating results and trends. We use these non-GAAP financial measures to evaluate our operating performance in a manner that allows for meaningful period-to-period comparison and analysis of trends in our business and our competitors. We believe that presentation of these non-GAAP financial measures provides useful information to investors in assessing our operating performance within our industry and allows comparability with the presentation of other companies in our industry.

The non-GAAP financial measures presented here should be considered in conjunction with, and not as a substitute for, the financial information presented in accordance with U.S. GAAP. For example, adjusted EBITDA excludes a number of expense items that are included in net loss. As a result, positive adjusted EBITDA or positive adjusted cash usage may be achieved even where we record a significant net loss in accordance with U.S. GAAP.

Investors are encouraged to review the reconciliation of these non-GAAP financial measures to their most directly comparable GAAP financial measures set forth in the tables captioned “Reconciliations of GAAP to Non-GAAP Financial Measures” in the section below.

Additionally, we make certain forward-looking statements about our future financial performance that include non-GAAP financial measures, which are difficult to predict for future periods because the nature of the adjustments pertains to events that have not yet occurred. We do not forecast many of the excluded items for internal use and therefore information reconciling forward-looking non-GAAP financial measures to U.S. GAAP financial measures is not available without unreasonable effort and is not provided. The occurrence, timing, and amount of any of the items excluded from U.S. GAAP to calculate non-GAAP financial measures could significantly impact our U.S. GAAP results.

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