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Stocks/QTRX/SEC Filings/8-K Nov 9, 2026

QTRX 8-K: SEC filing

Filed with the SEC on Nov 9, 2026 · accession 0001503274-26-000042

QTRX filed a 8-K (current report) with the SEC on Nov 9, 2026. A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The stock moved +1.7% by the first close after the filing.

Summary of the filing

Quanterix Corporation furnished a Form 8-K on November 9, 2026, announcing its financial results for the third fiscal quarter ended September 30, 2026, and providing earnings call slides under Regulation FD.

For details, click here →How to read a 8-K →

Key details

RegistrantQuanterix Corporation
Chief financial officerJason Faessler

How QTRX stock reacted

Close before

$2.90

Nov 6, 2026

First close after

+1.73%

$2.94

5 trading days

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Since filing

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Frequently asked questions

What did QTRX file with the SEC on Nov 9, 2026?

QTRX filed a 8-K (SEC filing). Quanterix Corporation furnished a Form 8-K on November 9, 2026, announcing its financial results for the third fiscal quarter ended September 30, 2026, and providing earnings call slides under Regulation FD.

How do I read a 8-K?

A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more. The "Item" number tells you the topic (e.g. 2.02 results, 5.02 executive change, 1.01 new agreement, 1.03 bankruptcy). Exhibits (99.1 press release) usually hold the details.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 8-K (current report): A report of a major event, filed within four business days: results, deals, leadership changes, bankruptcy and more.

How did QTRX stock react to this filing?

QTRX closed at $2.90 before the filing and $2.94 on Nov 9, 2026 (+1.73%).

Other QTRX SEC filings

  • SCHEDULE 13G/A · SEC filingAug 14, 2026
  • 8-K · Guidance cutAug 10, 2026
  • 10-Q · SEC filingAug 10, 2026
  • 8-K · Board changeJun 10, 2026
  • 8-K · Cfo changeJun 9, 2026
  • 8-K · Executive departureMay 26, 2026
  • 8-K · Cfo changeMay 12, 2026
  • 8-K · SEC filingMay 6, 2026
  • 10-Q · SEC filingMay 6, 2026
  • DEF 14A · Board changeApr 24, 2026

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Source: SEC EDGAR filing 0001503274-26-000042. The summary and key details are extracted by SEPT from the filing and may contain errors. Price reaction uses daily closing prices. Not financial advice.