Greedy Insider
Quanterix Corp (QTRX) Insider Trades and Scores
Quanterix Corp (QTRX) insider trades: since Nov 30, 2025, Greedy Insider recorded 7 open-market buys and 67 sales on Form 4 from 6 insiders. The strongest recent filing scored 82 (Strong).
Who bought and who sold
Across the last 74 scoreable Form 4 transactions in QTRX, 7 were open-market purchases and 67 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Miller Michael Francis | Chief Technology Officer | Sell | 25.0 | 76.75 | 2026-10-15 | 63 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 41.0 | 125.87 | 2026-10-15 | 66 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 41.0 | 125.87 | 2026-10-15 | 66 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 111.0 | 340.77 | 2026-10-15 | 73 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 249.0 | 764.43 | 2026-10-15 | 79 | View |
| DONNELLY WILLIAM P | Director | Buy | 6964.0 | 23747.24 | 2026-10-01 | 51 | View |
| Mendel Scott | Director | Buy | 4398.0 | 14997.18 | 2026-10-01 | 71 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 249.0 | 677.28 | 2026-09-15 | 78 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 41.0 | 111.52 | 2026-09-15 | 65 | View |
| Miller Michael Francis | Chief Technology Officer | Sell | 25.0 | 68.0 | 2026-09-15 | 62 | View |
The strongest recent filing
Miller Michael Francis (COO) sold 293 shares of Quanterix Corp on Mar 15, 2026, a filing that scored 82 (Strong). It scored Strong because a senior insider was trading and it was direct personal ownership. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
No cluster buy is present in the current window: the recent QTRX filings do not show three or more insiders buying together inside seven days.
How this compares with Quanterix Corp's own history
Open-market buys make up 9% of the 74 scoreable QTRX transactions on record between Nov 30, 2025 and Oct 15, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 74
- Open-market buys: 7
- Sales: 67
- Distinct insiders: 6
- Strongest recent Greediness Score: 82 (Strong)
Primary sources
Related
- Strongest filing
- QTRX in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.