As of May 14, 2026, the three largest insider holders of QTRX are David R Walt (Director, 1.87Mn shares), David R Walt (Director, 1.87Mn shares), David R Walt (Director, 1.87Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| David R Walt | - | 1,872,890 | 0 | 06 Jan, 2026 |
| David R Walt | - | 1,872,890 | 0 | 06 Jan, 2026 |
| David R Walt | - | 1,872,890 | 0 | 06 Jan, 2026 |
| E Kevin Hrusovsky | Executive Chairman | 910,249 | 0 | 06 Jul, 2022 |
| Masoud Toloue | President Ceo | 507,310 | 0 | 20 Jan, 2026 |
| Masoud Toloue | President Ceo | 507,310 | 0 | 20 Jan, 2026 |
| Masoud Toloue | President Ceo | 507,310 | 0 | 20 Jan, 2026 |
| Paul M Meister | - | 313,253 | 0 | 07 Jan, 2026 |
| Martin D Madaus | - | 0 | 254,633 | 10 Aug, 2022 |
| William P Donnelly | Executive Chair | 154,127 | 0 | 03 Apr, 2026 |
| Keith Crandell | - | 131,236 | 0 | 04 Apr, 2023 |
| Michael A Doyle | Cfo And Treasurer | 88,332 | 0 | 02 Oct, 2023 |
| Alan Bruce Sachs | - | 70,099 | 0 | 06 Jan, 2026 |
| Alan Bruce Sachs | - | 70,099 | 0 | 06 Jan, 2026 |
| Alan Bruce Sachs | - | 70,099 | 0 | 06 Jan, 2026 |
| Malcolm Garret Hampton | - | 70,099 | 0 | 06 Jan, 2026 |
| Sarah E. Hlavinka | - | 60,070 | 0 | 03 Jul, 2025 |
| Karen Flynn | - | 57,212 | 0 | 06 Jan, 2026 |
| Scott Mendel | - | 56,053 | 0 | 06 Jan, 2026 |
| Goldman Myla Lai | - | 54,804 | 0 | 06 Jan, 2026 |
| David C. Duffy | Svp Rd And Cto | 54,730 | 0 | 28 Mar, 2022 |
| Ivana Magovcevic-Liebisch | - | 43,607 | 0 | 06 Jan, 2026 |
| Jeffrey Thomas Elliott | - | 42,792 | 0 | 06 Jan, 2026 |
| John J Fry | General Counsel Secretary | 37,671 | 0 | 03 Aug, 2022 |
| Martin D Madaus | - | 36,908 | 0 | 06 Jan, 2025 |
| Dawn Mattoon | Sr. Vp, Diagnostics | 36,876 | 0 | 05 Apr, 2022 |
| Michael Francis Miller | Chief Operating Officer | 32,522 | 0 | 16 Apr, 2026 |
| Vandana Sriram | Chief Financial Officer | 28,713 | 0 | 16 Apr, 2026 |
| Vandana Sriram | Chief Financial Officer | 27,428 | 0 | 16 Mar, 2026 |
| Vandana Sriram | Chief Financial Officer | 27,428 | 0 | 16 Mar, 2026 |
| Mark T. Roskey | Svp, Strategic Partnerships | 22,325 | 0 | 05 Apr, 2022 |
| Mark T. Roskey | Svp, Strategic Partnerships | 22,325 | 0 | 05 Apr, 2022 |
| Mark T. Roskey | Svp, Strategic Partnerships | 22,325 | 0 | 05 Apr, 2022 |
| Brian J Blaser | - | 19,049 | 0 | 04 Jan, 2024 |
| Laurie J Olson | - | 13,738 | 0 | 14 May, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Apr, 2026 | Vandana Sriram | Common Stock | A | 263 | - | 27,691 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | A | 81 | - | 31,512 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | D | 25 | $3.60 | 31,487 | D | F |
| 15 Apr, 2026 | Vandana Sriram | Common Stock | D | 79 | $3.60 | 27,612 | D | F |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | A | 136 | - | 31,623 | D | M |
| 15 Apr, 2026 | Vandana Sriram | Common Stock | A | 514 | - | 28,126 | D | M |
| 15 Apr, 2026 | Vandana Sriram | Common Stock | D | 154 | $3.60 | 27,972 | D | F |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | D | 41 | $3.60 | 31,582 | D | F |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | A | 135 | - | 31,717 | D | M |
| 15 Apr, 2026 | Vandana Sriram | Common Stock | A | 1,056 | - | 29,028 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | D | 41 | $3.60 | 31,676 | D | F |
| 15 Apr, 2026 | Vandana Sriram | Common Stock | D | 315 | $3.60 | 28,713 | D | F |
| 15 Apr, 2026 | Vandana Sriram | Restricted Stock Unit | D | 263 | $0.00 | 4,208 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | A | 372 | - | 32,048 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | D | 111 | $3.60 | 31,937 | D | F |
| 15 Apr, 2026 | Vandana Sriram | Restricted Stock Unit | D | 514 | $0.00 | 11,311 | D | M |
| 15 Apr, 2026 | Vandana Sriram | Restricted Stock Unit | D | 1,056 | $0.00 | 35,922 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | A | 834 | - | 32,771 | D | M |
| 15 Apr, 2026 | Michael Francis Miller | Common Stock | D | 249 | $3.60 | 32,522 | D | F |
| 15 Apr, 2026 | Michael Francis Miller | Restricted Stock Unit | D | 81 | $0.00 | 841 | D | M |