Quanterix (QTRX)CFO bought ~$20K

~$20K

Approx. value · 4,150 sh @ $4.79

87K

Holds after · shares reported

Traded

Sep 12, 2025

Filed

Sep 17, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Sep 12, 2025 · this disclosureInsider · Their first buy on recordCFO purchased ~$20K of QTRX shares in the open market

What came next

1. Nov 10, 2025Company filing · Form 8-K · ResultsReported its results
2. Nov 20, 2025Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On November 20, 2025, Paul Meister and David Walt, Ph.D. notified Quanterix Corporation (the “Company”) of their retirement from the Board of Directors of the Company (the “Board”) and each committee of the Board on which they served, effective immediately.”
3. Dec 23, 2025Federal contract · $12K obligatedDepartment of Health and Human Services awarded Quanterix Corp: $12K obligated to date
4. Jan 8, 2026Company filing · Form 8-K · Results, Executive changeChanged a top executive or board member, and reported its results (and 1 more item)“On January 8, 2026, Masoud Toloue, Ph.D., President and Chief Executive Officer of Quanterix Corporation (“Quanterix” or the “Company”), entered into a separation agreement and release with the Company (the “Separation Agreement”), pursuant to which his employment as President and Chief Executive Officer of the Company has ended and he has resigned as a member of the Board of Directors (the “Board”), both effective…”

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Quanterix

OQRO holds no insider, Congress, fund or contract record for Quanterix dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its QTRX page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Quanterix

• USAspending.gov award recordDec 23, 2025
• SEC Form 4Jun 13, 2025
• SEC Form 4Jun 13, 2025
• SEC Form 4Jun 10, 2025
• SEC Form 4Jun 9, 2025
• SEC Form 4Jun 9, 2025

Everything OQRO holds on this company is on its QTRX page.