Insider Shareholders with Direct Ownership of Quanterix Corp (QTRX)
This section provides a comprehensive overview of the insiders with direct ownership of Quanterix Corp (QTRX). You can find detailed information about the size and nature of each insider's ownership stake, as well as the latest updates on their holdings.
Quanterix Corp Insider List
| Insider | Adquired | Disposed | Held | # of Trades | Last Transaction |
|---|---|---|---|---|---|
|
Flagship Ventures Fund 2004 L P
> 10% Shareholder |
2,030,495 | 0 | 2,030,495 $11.7 Million | 1 |
Dec 11, 2017
Added 5.13%
|
| 598,516 | 2,000 | 1,872,890 $10.8 Million | 17 |
Jan 02, 2026
Added 0.06%
|
|
|
E Kevin Hrusovsky
Executive Chairman |
43,991 | 174,826 | 910,249 $5.22 Million | 50 |
Jul 05, 2022
Reduced 0.11%
|
|
Masoud Toloue
President & CEO |
574,665 | 66,219 | 508,446 $2.92 Million | 72 |
Dec 31, 2025
Reduced 0.05%
|
| 299,049 | 0 | 309,279 $1.78 Million | 22 |
Jul 01, 2025
Added 0.72%
|
|
|
William P Donnelly
Executive Chair |
150,751 | 0 | 150,751 $865,310 | 13 |
Jan 02, 2026
Added 1.55%
|
| 94,216 | 0 | 131,236 $753,294 | 20 |
Apr 03, 2023
Added 0.88%
|
|
|
Michael A Doyle
CFO and Treasurer |
90,777 | 2,445 | 88,332 $507,025 | 21 |
Sep 30, 2023
Reduced 0.13%
|
|
Vandana Sriram
Chief Financial Officer |
92,161 | 5,877 | 85,977 $493,507 | 22 |
Dec 15, 2025
Reduced 0.27%
|
| 70,099 | 0 | 70,099 $402,368 | 2 |
Jan 02, 2026
Added 25.0%
|
|
| 70,099 | 0 | 70,099 $402,368 | 2 |
Jan 02, 2026
Added 25.0%
|
|
| 51,629 | 0 | 60,070 $344,801 | 21 |
Jul 01, 2025
Added 4.17%
|
|
| 57,212 | 0 | 57,212 $328,396 | 7 |
Jan 02, 2026
Added 29.0%
|
|
| 56,053 | 0 | 56,053 $321,744 | 3 |
Jan 02, 2026
Added 3.35%
|
|
| 54,804 | 0 | 54,804 $314,574 | 3 |
Jan 02, 2026
Added 3.43%
|
|
|
David C. Duffy
SVP R&D and CTO |
45,022 | 34,803 | 54,730 $314,150 | 21 |
Mar 23, 2022
Reduced 5.63%
|
|
William Geist
Chief Operating Officer |
44,951 | 0 | 44,951 $258,018 | 2 |
Feb 08, 2021
Added 9.84%
|
|
John J Fry
General Counsel & Secretary |
12,716 | 8,214 | 37,671 $216,231 | 27 |
Aug 01, 2022
Reduced 1.05%
|
| 38,284 | 12,572 | 36,908 $211,851 | 25 |
Jan 02, 2025
Added 16.77%
|
|
|
Dawn Mattoon
Sr. VP, Diagnostics |
42,599 | 37,385 | 36,876 $211,668 | 30 |
Apr 01, 2022
Reduced 0.7%
|
|
Amol Chaubal
Chief Financial Officer |
5,789 | 1,846 | 30,222 $173,474 | 10 |
May 03, 2021
Reduced 0.02%
|
|
Mark T. Roskey
SVP, Strategic Partnerships |
3,373 | 3,531 | 22,325 $128,145 | 22 |
Apr 01, 2022
Reduced 0.76%
|
| 20,235 | 0 | 20,235 $116,148 | 2 |
Jan 02, 2025
Added 26.87%
|
|
| 19,420 | 0 | 19,420 $111,470 | 2 |
Jan 02, 2025
Added 27.69%
|
|
| 19,049 | 0 | 19,049 $109,341 | 2 |
Jan 02, 2024
Added 13.4%
|
|
| 20,342 | 5,000 | 13,738 $78,856 | 10 |
May 14, 2024
Reduced 9.84%
|
|
|
Shawn Stetson
Interim CFO and Treasurer |
1,423 | 0 | 4,712 $27,046 | 1 |
May 11, 2021
Added 23.19%
|
| 57,083 | 61,623 | 2,270 $13,029 | 7 |
Jun 07, 2021
Reduced 67.39%
|
|
|
Arch Venture Fund Vi Lp
> 10% Shareholder |
3,777 | 0 | 1,889 $10,842 | 2 |
Nov 24, 2020
Added 35.42%
|