As of September 29, 2026, the three largest insider holders of QTRX are David R Walt (Director, 1.87Mn shares), E Kevin Hrusovsky (Executive Chairman, 910.25K shares), Masoud Toloue (President Ceo, 507.31K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | David R Walt | Director | 1,872,890 | 0 | 1,872,890 | 40.4% | 06 Jan, 2026 |
| 2 | E Kevin Hrusovsky | Executive Chairman | 910,249 | 0 | 910,249 | 19.6% | 06 Jul, 2022 |
| 3 | Masoud Toloue | President Ceo | 507,310 | 0 | 507,310 | 10.9% | 20 Jan, 2026 |
| 4 | Paul M Meister | Director | 313,253 | 0 | 313,253 | 6.8% | 07 Jan, 2026 |
| 5 | William P Donnelly | Executive Chair | 162,401 | 0 | 162,401 | 3.5% | 19 Aug, 2026 |
| 6 | Keith Crandell | Director | 131,236 | 0 | 131,236 | 2.8% | 04 Apr, 2023 |
| 7 | Michael A Doyle | Cfo And Treasurer | 88,332 | 0 | 88,332 | 1.9% | 02 Oct, 2023 |
| 8 | Alan Bruce Sachs | Director | 70,099 | 0 | 70,099 | 1.5% | 06 Jan, 2026 |
| 9 | Malcolm Garret Hampton | Director | 70,099 | 0 | 70,099 | 1.5% | 06 Jan, 2026 |
| 10 | Sarah E. Hlavinka | Director | 60,070 | 0 | 60,070 | 1.3% | 03 Jul, 2025 |
| 11 | Karen Flynn | Director | 57,212 | 0 | 57,212 | 1.2% | 06 Jan, 2026 |
| 12 | David C. Duffy | Svp Rd And Cto | 54,730 | 0 | 54,730 | 1.2% | 28 Mar, 2022 |
| 13 | Ivana Magovcevic-Liebisch | Director | 43,607 | 0 | 43,607 | 0.9% | 06 Jan, 2026 |
| 14 | Michael Francis Miller | Chief Technology Officer | 38,452 | 0 | 38,452 | 0.8% | 16 Sep, 2026 |
| 15 | John J Fry | General Counsel Secretary | 37,671 | 0 | 37,671 | 0.8% | 03 Aug, 2022 |
| 16 | Martin D Madaus | Director | 36,908 | 0 | 36,908 | 0.8% | 06 Jan, 2025 |
| 17 | Dawn Mattoon | Sr. Vp, Diagnostics | 36,876 | 0 | 36,876 | 0.8% | 05 Apr, 2022 |
| 18 | Vandana Sriram | Chief Financial Officer | 31,283 | 0 | 31,283 | 0.7% | 23 Jun, 2026 |
| 19 | Scott Mendel | Director | 24,056 | 0 | 24,056 | 0.5% | 09 Jul, 2026 |
| 20 | Mark T. Roskey | Svp, Strategic Partnerships | 22,325 | 0 | 22,325 | 0.5% | 05 Apr, 2022 |
| 21 | Brian J Blaser | Director | 19,049 | 0 | 19,049 | 0.4% | 04 Jan, 2024 |
| 22 | Jeffrey Thomas Elliott | Director | 15,345 | 0 | 15,345 | 0.3% | 20 Aug, 2026 |
| 23 | Goldman Myla Lai | Director | 15,041 | 0 | 15,041 | 0.3% | 09 Jul, 2026 |
| 24 | Laurie J Olson | Director | 13,738 | 0 | 13,738 | 0.3% | 14 May, 2024 |
| 25 | Benjamin Meadows | Chief Commercial Officer | 3,500 | 0 | 3,500 | 0.1% | 12 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 15 Sep, 2026 | James Edward Jr. Gute | Chief Commercial Officer | Acquired A | 260,315 | $0.00 | $0 | 260,315 | Direct |
| 31 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Acquired M | 159 | — | — | 37,409 | Direct |
| 31 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed F | 48 | $2.67 | $128 | 37,361 | Direct |
| 31 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed M | 159 | $0.00 | $0 | 0 | Direct |
| 19 Aug, 2026 | Jeffrey Thomas Elliott | Director | Acquired M | 3,955 | — | — | 15,345 | Direct |
| 19 Aug, 2026 | Jeffrey Thomas Elliott | Director | Disposed M | 3,955 | $0.00 | $0 | 4,075 | Direct |
| 17 Aug, 2026 | William P Donnelly | Director | Acquired M | 2,802 | — | — | 162,401 | Direct |
| 17 Aug, 2026 | William P Donnelly | Director | Disposed M | 2,802 | $0.00 | $0 | 0 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Acquired M | 81 | — | — | 36,240 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed F | 25 | $2.59 | $65 | 36,215 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Acquired M | 136 | — | — | 36,351 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed F | 41 | $2.59 | $106 | 36,310 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Acquired M | 135 | — | — | 36,445 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed F | 41 | $2.59 | $106 | 36,404 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Acquired M | 372 | — | — | 36,776 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed F | 111 | $2.59 | $287 | 36,665 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Acquired M | 834 | — | — | 37,499 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed F | 249 | $2.59 | $645 | 37,250 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed M | 81 | $0.00 | $0 | 517 | Direct |
| 15 Aug, 2026 | Michael Francis Miller | Chief Technology Officer | Disposed M | 136 | $0.00 | $0 | 981 | Direct |