Insider Ledger
Quanterix Corp (QTRX) insider buying and SEC filings
Quanterix Corp · CIK 1503274
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Laboratory Analytical Instruments
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$286K
Insiders who bought
1
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 12–13, 2026 | Purchase (code P) | William P. Donnelly (Director) bought 99,400 shares indirectly between Aug 12 and Aug 13 at about $2.88 ($286K), reported as a purchase (code P). New position of 99,400 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 14, 2026 |
| May 12, 2026 | Purchase (code P) | Benjamin Meadows (Chief Commercial Officer) bought 3,500 shares at $2.77 ($10K), reported as a purchase (code P). New position of 3,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 12, 2026 |
56 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
Follow QTRX in the Insider Ledger app
Get the appA plain-English brief of insider purchases, 8-Ks and red flags at the companies you pick. No account needed.