List of insiders holdings for Quanterix Corp:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | ARCH VENTURE FUND VI LP ARCH Venture Fund VIII Overage L.P. ARCH VENTURE PARTNERS VI LP ARCH VENTURE PARTNERS VI LLC ARCH Venture Partners VIII LLC BYBEE CLINTON NELSEN ROBERT 10% Owner | 2021-02-02 16:12:23 | 3,156,106 0 | 3,156,106 | Form 13G |
| 2 | Cunningham Everett President and CEO | 2026-01-21 16:15:00 | 2,697,500 0 | 2,697,500 | Form 4 |
| 3 | WALT DAVID R Director | 2026-01-06 20:11:53 | 1,872,890 0 | 1,872,890 | Form 4 |
| 4 | HRUSOVSKY E KEVIN Executive Chairman | 2022-07-06 16:07:44 | 910,249 0 | 910,249 | Form 4 |
| 5 | Toloue Masoud President & CEO | 2026-01-20 16:37:02 | 507,310 0 | 507,310 | Form 4 |
| 6 | MEISTER PAUL M Director | 2026-01-15 13:56:49 | 313,253 0 | 313,253 | Form 4 |
| 7 | Madaus Martin D Director | 2025-01-06 17:55:49 | 52,729 254,633 | 307,362 | Form 4 |
| 8 | Gute James Edward Jr. Chief Commercial Officer | 2026-09-17 17:03:44 | 260,315 0 | 260,315 | Form 4 |
| 9 | DRISCOLL JOSEPH Chief Financial Officer | 2019-01-15 16:02:59 | 203,773 0 | 203,773 | Form 4 |
| 10 | DONNELLY WILLIAM P Director | 2026-08-19 06:37:50 | 162,401 0 | 162,401 | Form 4 |
| 11 | Char Daniel Chief Legal Officer | 2026-03-24 16:06:50 | 147,133 0 | 147,133 | Form 3 |
| 12 | Faessler Jason F. Chief Financial Officer | 2026-07-16 17:31:47 | 141,820 0 | 141,820 | Form 4 |
| 13 | CRANDELL KEITH Director | 2023-04-04 18:23:24 | 131,236 0 | 131,236 | Form 4 |
| 14 | DOYLE MICHAEL A CFO and Treasurer | 2023-10-02 17:42:47 | 88,332 0 | 88,332 | Form 4 |
| 15 | Sriram Vandana Chief Financial Officer | 2026-06-23 17:06:09 | 79,058 0 | 79,058 | Form 4 |
| 16 | Miller Michael Francis Chief Technology Officer | 2026-09-16 16:59:07 | 73,685 0 | 73,685 | Form 4 |
| 17 | Hampton Malcolm Garret Director | 2026-01-06 17:49:47 | 70,099 0 | 70,099 | Form 4 |
| 18 | Sachs Alan Bruce Director | 2026-01-06 17:49:20 | 70,099 0 | 70,099 | Form 4 |
| 19 | Hlavinka Sarah E. Director | 2025-07-03 14:37:32 | 60,070 0 | 60,070 | Form 4 |
| 20 | Flynn Karen Director | 2026-01-06 17:45:19 | 57,212 0 | 57,212 | Form 4 |
| 21 | Geist William Chief Operating Officer | 2021-02-10 16:10:21 | 56,398 0 | 56,398 | Form 4 |
| 22 | Duffy David C. SVP R&D and CTO | 2022-03-28 17:02:33 | 54,730 0 | 54,730 | Form 4 |
| 23 | Orticerio Ernest SVP Finance and Corporate Dev | 2019-01-11 16:15:22 | 51,585 0 | 51,585 | Form 4 |
| 24 | Streeter Jackson SVP, Corp Dev & Strategy | 2019-03-19 16:10:23 | 46,404 0 | 46,404 | Form 4 |
| 25 | Magovcevic-Liebisch Ivana Director | 2026-01-15 12:29:53 | 43,607 0 | 43,607 | Form 4 |
| 26 | Mendel Scott Director | 2026-07-09 17:20:29 | 40,447 0 | 40,447 | Form 4 |
| 27 | Fry John J General Counsel & Secretary | 2022-08-03 16:01:41 | 37,671 0 | 37,671 | Form 4 |
| 28 | Mattoon Dawn Sr. VP, Diagnostics | 2022-04-05 16:02:37 | 36,876 0 | 36,876 | Form 4 |
| 29 | LAI GOLDMAN MYLA Director | 2026-07-09 17:19:21 | 31,432 0 | 31,432 | Form 4 |
| 30 | Chaubal Amol Chief Financial Officer | 2021-05-05 21:15:07 | 30,222 0 | 30,222 | Form 4 |
| 31 | Desjourdy Amee Chief Human Resource Officer | 2019-08-21 16:02:03 | 29,188 0 | 29,188 | Form 4 |
| 32 | Blaser Brian J Director | 2024-01-04 16:09:19 | 25,461 0 | 25,461 | Form 4 |
| 33 | BAL BRUCE J VP of Ops, Service and Quality | 2018-05-14 21:00:57 | 24,185 0 | 24,185 | Form 4 |
| 34 | Roskey Mark T. SVP, Strategic Partnerships | 2022-04-05 16:03:04 | 22,325 0 | 22,325 | Form 4 |
| 35 | Elliott Jeffrey Thomas Director | 2026-08-20 16:59:54 | 19,420 0 | 19,420 | Form 4 |
| 36 | Connolly John M Director | 2020-01-06 16:04:06 | 17,410 0 | 17,410 | Form 4 |
| 37 | OLSON LAURIE J Director | 2024-05-14 16:02:12 | 13,738 0 | 13,738 | Form 4 |
| 38 | Cole Douglas G. Director | 2019-01-04 16:02:08 | 12,440 0 | 12,440 | Form 4 |
| 39 | Stetson Shawn Interim CFO and Treasurer | 2021-05-13 17:32:40 | 8,033 0 | 8,033 | Form 4 |
| 40 | DEKKERS MARIJN E Director | 2021-06-08 16:19:37 | 7,002 0 | 7,002 | Form 4 |
| 41 | Meadows Benjamin Chief Commercial Officer | 2026-06-12 17:32:14 | 3,500 0 | 3,500 | Form 4 |
| 42 | BAIN CAPITAL VENTURE INVESTORS LLC BAIN CAPITAL VENTURE PARTNERS 2005 L.P. BAIN CAPITAL VENTURE FUND 2005 L.P. BCIP Associates III LLC BCIP Associates III BCIP Associates III-B LLC BCIP Associates III-B KRUPKA MICHAEL A Agarwal Ajay 10% Owner | 2021-02-16 15:11:31 | 0 0 | 0 | Form 13G |
| 43 | Flagship Ventures Fund 2004 L P Flagship Ventures General Partner LLC AFEYAN NOUBAR KANIA EDWIN M JR 10% Owner | 2020-02-13 16:17:06 | 0 0 | 0 | Form 13G |
| 44 | bioMerieux 10% Owner | 2019-11-18 15:55:57 | 0 0 | 0 | Form 13G |