QTRX

• GAAP gross margin was 38.5% (down from 40.9%), while adjusted gross margin was 47.9% (up from 41.8%).
• Adjusted EBITDA loss was $10.0 million, compared to a $13.7 million loss in the prior year.
• The company ended the quarter with $96.9 million in cash and marketable securities, and revised 2026 revenue guidance to $142-148 million from $169-174 million.
• Quanterix recorded a $26.9 million goodwill impairment related to the Akoya acquisition and expects cash flow breakeven in 2027.
• Jim Gute was appointed Chief Commercial Officer, and the company announced commercial insurance coverage for its Alzheimer's blood test.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• The advisory say-on-pay proposal (Proposal 2) was approved with 27,679,636 votes for and 3,881,516 against.
• Shareholders ratified KPMG LLP as independent auditor for fiscal year 2026 (Proposal 3) with 38,728,204 votes for.
• The amendment and restatement of the 2017 Equity Incentive Plan (Proposal 4) was not approved, with 9,677,232 for and 24,004,124 against.
• The report was filed under Item 5.07 to disclose the voting results of the matters submitted to shareholders.

5.07 Submission of Matters to a Vote of Security Holders

• Jason Faessler was appointed Chief Financial Officer and Treasurer of Quanterix Corporation, expected to start June 22, 2026.
• The employment agreement dated May 31, 2026 provides an annual base salary of $475,000, a $200,000 cash sign-on bonus, and an annual performance bonus target of up to 50% of base salary.
• Faessler will receive an RSU award equal to 0.30% of outstanding common stock on his start date, vesting in four equal annual installments.
• If terminated without cause or for good reason, he receives 12 months' base salary, pro-rated target bonus, and subsidized health benefits; full equity vesting occurs in a change-in-control termination.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Anthony Catalano was appointed Chief Operating Officer of Quanterix Corporation on May 14, 2026.
• The employment agreement provides an initial annualized base salary of $400,000, a cash sign-on bonus of $50,000, and an annual bonus target of up to 50% of base salary.
• Catalano received a long-term equity award of restricted stock units equivalent to 0.30% of outstanding common stock, vesting in four equal annual installments.
• Michael Miller, formerly COO, has transitioned to the role of Chief Technology and Products Officer.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 9.01 Financial Statements and Exhibits

• Her departure is not related to any disagreements with the Company on accounting practices, financial statements, internal controls, or operations.
• She will receive severance benefits per her amended employment agreement, including 12 months of base salary, her 2026 annual target bonus, and 12 months of subsidized health benefits.
• The Company is conducting a search for a successor CFO with the assistance of a leading executive search firm.
• A press release announcing the transition was issued on May 12, 2026.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• GAAP gross margin was 42.7% compared to 48.9% in the prior year; adjusted gross margin (non-GAAP) was 50.9% versus 49.7%.
• Adjusted EBITDA (non-GAAP) loss was $9.8 million, improved from a loss of $11.3 million in the prior year.
• The company ended the quarter with $102.6 million in cash, cash equivalents, marketable securities, and restricted cash.
• Quanterix reaffirmed 2026 guidance: revenue of $169–$174 million, GAAP gross margin of 41%–45%, and adjusted gross margin of 49%–53%.

2.02 Results of Operations and Financial Condition · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Full-year 2025 revenue was $138.9 million, a 1% increase from $137.4 million in 2024.
• Q4 2025 GAAP gross margin was 45.7%, down from 63.0% in the prior year; adjusted gross margin was 50.0%, down from 57.7%.
• Adjusted EBITDA loss was $7.9 million in Q4 2025 and $44.9 million for full-year 2025.
• The company expects 2026 revenue of $169–174 million and cash flow breakeven in the second half of 2026.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• Everett Cunningham, formerly Chief Commercial Officer at Illumina, will become President and CEO and a Class II director, effective January 19, 2026.
• Cunningham's employment agreement includes a $750,000 base salary, a sign-on cash payment of $600,000, and equity awards of 1,070,000 time-based RSUs and 813,750 performance-based RSUs.
• Toloue will receive severance benefits consistent with his employment agreement, including acceleration of unvested equity awards vesting on or before April 30, 2026.
• The company expects to exceed its revenue and cash guidance for the full year 2025.

2.02 Results of Operations and Financial Condition · 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits