QTRX
Quanterix Corporation$3.35+0.14 (+4.52%)Prev Close$3.21·MCap$150.7M·P/E—·Vol838.5K·Yield—
▲
Buys (12M)
5
$2.89M
▼
Sells (12M)
1
$1.6K
◆
Net Activity
Net Buyer
$2.89M
●
Active Insiders
5
last 12 mo
Over the past 12 months, insider activity at Quanterix Corporation (QTRX) has been dominated by buying, with 5 insider purchases totaling $2.89M and 1 insider sale totaling $1.6K. The most recent insider transaction was by Sriram Vandana (Chief Financial Officer), who sold $1.6K worth of shares on Feb 15, 2026. Quanterix Corporation operates in the Healthcare sector, within the Medical - Devices industry, with a market cap of $150.7M.
QTRX Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Feb 15, 2026 | Sriram Vandana | Chief Financial Officer | Sell | 271 | $5.74 | $1.6K | 0 |
| Sep 17, 2025 | Sriram Vandana | Chief Financial Officer | Buy | 4,150 | $4.79 | $19.9K | 87,200 |
| Jun 13, 2025 | WALT DAVID R | Buy | 160,000 | $6.16 | $985.0K | 1,866,933 | |
| Jun 10, 2025 | Toloue Masoud | President & CEO | Buy | 45,900 | $5.42 | $248.7K | 518,922 |
| Jun 9, 2025 | DONNELLY WILLIAM P | Buy | 93,113 | $5.44 | $506.3K | 139,094+203% | |
| Jun 9, 2025 | WALT DAVID R | Buy | 210,000 | $5.40 | $1.13M | 1,706,933 | |
| Sep 17, 2024 | WALT DAVID R | Buy | 47,000 | $13.29 | $624.6K | 1,487,342 | |
| Aug 15, 2024 | Toloue Masoud | President & CEO | Buy | 19,000 | $10.90 | $207.1K | 354,119 |
| May 14, 2024 | OLSON LAURIE J | Sell | 1,500 | $16.98 | $25.5K | 13,738 | |
| Apr 2, 2024 | OLSON LAURIE J | Sell | 1,000 | $23.50 | $23.5K | 15,238 | |
| Feb 15, 2024 | OLSON LAURIE J | Sell | 1,500 | $24.35 | $36.5K | 15,238 | |
| Jan 4, 2024 | OLSON LAURIE J | Sell | 1,000 | $26.91 | $26.9K | 16,738 | |
| Nov 14, 2023 | OLSON LAURIE J | Sell | 1,500 | $21.89 | $32.8K | 13,791 | |
| Sep 11, 2023 | DONNELLY WILLIAM P | Buy | 20,200 | $24.85 | $502.0K | 28,438+245% | |
| Aug 16, 2022 | DOYLE MICHAEL A | CFO and Treasurer | Buy | 30,000 | $10.30 | $308.9K | 48,614+161% |
| Aug 16, 2022 | Toloue Masoud | President & CEO | Buy | 105,000 | $10.43 | $1.10M | 185,823+130% |
| Aug 11, 2022 | Hlavinka Sarah E. | Buy | 10,160 | $9.89 | $100.4K | 26,270+63% | |
| Aug 10, 2022 | Madaus Martin D | Buy | 89,667 | $8.43 | $755.5K | 254,633+54% | |
| Aug 10, 2022 | MEISTER PAUL M | Buy | 234,304 | $8.53 | $2.00M | 252,611New Position | |
| Aug 10, 2022 | WALT DAVID R | Buy | 150,000 | $8.62 | $1.29M | 1,431,312 | |
| Aug 3, 2022 | DOYLE MICHAEL A | CFO and Treasurer | Sell | 471 | $17.96 | $8.5K | 18,651 |
| Aug 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 401 | $15.61 | $6.3K | 37,671 |
| Aug 3, 2022 | Toloue Masoud | President & CEO | Sell | 446 | $15.61 | $7.0K | 80,823 |
| Jul 6, 2022 | Fry John J | General Counsel & Secretary | Sell | 387 | $16.57 | $6.4K | 38,072 |
| Jul 6, 2022 | HRUSOVSKY E KEVIN | Executive Chairman | Sell | 960 | $16.57 | $15.9K | 910,249 |
| Jul 6, 2022 | Toloue Masoud | President & CEO | Sell | 432 | $16.57 | $7.2K | 81,269 |
| Jun 14, 2022 | Toloue Masoud | President & CEO | Sell | 5,564 | $15.27 | $85.0K | 81,701 |
| Jun 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 378 | $17.47 | $6.6K | 38,459 |
| Jun 3, 2022 | HRUSOVSKY E KEVIN | Executive Chairman | Sell | 712 | $17.47 | $12.4K | 911,209 |
| May 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 429 | $22.36 | $9.6K | 38,921 |
| May 3, 2022 | HRUSOVSKY E KEVIN | Executive Chairman | Sell | 649 | $22.36 | $14.5K | 912,048 |
| Apr 5, 2022 | Fry John J | General Counsel & Secretary | Sell | 524 | $29.79 | $15.6K | 30,229 |
| Apr 5, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 868 | $29.79 | $25.9K | 886,976 |
| Apr 5, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 261 | $29.79 | $7.8K | 36,876 |
| Apr 5, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 171 | $29.79 | $5.1K | 22,325 |
| Mar 28, 2022 | Duffy David C. | SVP R&D and CTO | Sell | 3,266 | $30.00 | $98.0K | 54,730 |
| Mar 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 371 | $31.46 | $11.7K | 30,852 |
| Mar 3, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 589 | $31.46 | $18.5K | 888,002 |
| Mar 3, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 267 | $31.46 | $8.4K | 37,208 |
| Mar 3, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 166 | $31.46 | $5.2K | 22,540 |
| Feb 9, 2022 | Fry John J | General Counsel & Secretary | Sell | 481 | $34.97 | $16.8K | 31,124 |
| Feb 9, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 1,364 | $34.97 | $47.7K | 888,433 |
| Feb 9, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 318 | $34.97 | $11.1K | 37,404 |
| Feb 9, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 292 | $34.97 | $10.2K | 22,662 |
| Feb 4, 2022 | Duffy David C. | SVP R&D and CTO | Sell | 3,266 | $30.91 | $101.0K | 57,996 |
| Feb 4, 2022 | Fry John J | General Counsel & Secretary | Sell | 371 | $31.46 | $11.7K | 31,704 |
| Feb 4, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 589 | $31.46 | $18.5K | 889,955 |
| Feb 4, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 267 | $31.46 | $8.4K | 37,793 |
| Feb 4, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 166 | $31.46 | $5.2K | 22,998 |
| Jan 31, 2022 | Duffy David C. | SVP R&D and CTO | Sell | 3,266 | $30.00 | $98.0K | 61,262 |
Showing 1–50 of 121
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QTRX Insider Buying Activity
The following table shows recent insider purchases of Quanterix Corporation (QTRX) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Sep 17, 2025 | Sriram Vandana | Chief Financial Officer | Buy | 4,150 | $4.79 | $19.9K | 87,200 |
| Jun 13, 2025 | WALT DAVID R | Buy | 160,000 | $6.16 | $985.0K | 1,866,933 | |
| Jun 10, 2025 | Toloue Masoud | President & CEO | Buy | 45,900 | $5.42 | $248.7K | 518,922 |
| Jun 9, 2025 | DONNELLY WILLIAM P | Buy | 93,113 | $5.44 | $506.3K | 139,094+203% | |
| Jun 9, 2025 | WALT DAVID R | Buy | 210,000 | $5.40 | $1.13M | 1,706,933 | |
| Sep 17, 2024 | WALT DAVID R | Buy | 47,000 | $13.29 | $624.6K | 1,487,342 | |
| Aug 15, 2024 | Toloue Masoud | President & CEO | Buy | 19,000 | $10.90 | $207.1K | 354,119 |
| Sep 11, 2023 | DONNELLY WILLIAM P | Buy | 20,200 | $24.85 | $502.0K | 28,438+245% | |
| Aug 16, 2022 | DOYLE MICHAEL A | CFO and Treasurer | Buy | 30,000 | $10.30 | $308.9K | 48,614+161% |
| Aug 16, 2022 | Toloue Masoud | President & CEO | Buy | 105,000 | $10.43 | $1.10M | 185,823+130% |
| Aug 11, 2022 | Hlavinka Sarah E. | Buy | 10,160 | $9.89 | $100.4K | 26,270+63% | |
| Aug 10, 2022 | Madaus Martin D | Buy | 89,667 | $8.43 | $755.5K | 254,633+54% | |
| Aug 10, 2022 | MEISTER PAUL M | Buy | 234,304 | $8.53 | $2.00M | 252,611New Position | |
| Aug 10, 2022 | WALT DAVID R | Buy | 150,000 | $8.62 | $1.29M | 1,431,312 |
QTRX Insider Selling Activity
The following table shows recent insider sales of Quanterix Corporation (QTRX) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Feb 15, 2026 | Sriram Vandana | Chief Financial Officer | Sell | 271 | $5.74 | $1.6K | 0 |
| May 14, 2024 | OLSON LAURIE J | Sell | 1,500 | $16.98 | $25.5K | 13,738 | |
| Apr 2, 2024 | OLSON LAURIE J | Sell | 1,000 | $23.50 | $23.5K | 15,238 | |
| Feb 15, 2024 | OLSON LAURIE J | Sell | 1,500 | $24.35 | $36.5K | 15,238 | |
| Jan 4, 2024 | OLSON LAURIE J | Sell | 1,000 | $26.91 | $26.9K | 16,738 | |
| Nov 14, 2023 | OLSON LAURIE J | Sell | 1,500 | $21.89 | $32.8K | 13,791 | |
| Aug 3, 2022 | DOYLE MICHAEL A | CFO and Treasurer | Sell | 471 | $17.96 | $8.5K | 18,651 |
| Aug 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 401 | $15.61 | $6.3K | 37,671 |
| Aug 3, 2022 | Toloue Masoud | President & CEO | Sell | 446 | $15.61 | $7.0K | 80,823 |
| Jul 6, 2022 | Fry John J | General Counsel & Secretary | Sell | 387 | $16.57 | $6.4K | 38,072 |
| Jul 6, 2022 | HRUSOVSKY E KEVIN | Executive Chairman | Sell | 960 | $16.57 | $15.9K | 910,249 |
| Jul 6, 2022 | Toloue Masoud | President & CEO | Sell | 432 | $16.57 | $7.2K | 81,269 |
| Jun 14, 2022 | Toloue Masoud | President & CEO | Sell | 5,564 | $15.27 | $85.0K | 81,701 |
| Jun 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 378 | $17.47 | $6.6K | 38,459 |
| Jun 3, 2022 | HRUSOVSKY E KEVIN | Executive Chairman | Sell | 712 | $17.47 | $12.4K | 911,209 |
| May 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 429 | $22.36 | $9.6K | 38,921 |
| May 3, 2022 | HRUSOVSKY E KEVIN | Executive Chairman | Sell | 649 | $22.36 | $14.5K | 912,048 |
| Apr 5, 2022 | Fry John J | General Counsel & Secretary | Sell | 524 | $29.79 | $15.6K | 30,229 |
| Apr 5, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 868 | $29.79 | $25.9K | 886,976 |
| Apr 5, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 261 | $29.79 | $7.8K | 36,876 |
| Apr 5, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 171 | $29.79 | $5.1K | 22,325 |
| Mar 28, 2022 | Duffy David C. | SVP R&D and CTO | Sell | 3,266 | $30.00 | $98.0K | 54,730 |
| Mar 3, 2022 | Fry John J | General Counsel & Secretary | Sell | 371 | $31.46 | $11.7K | 30,852 |
| Mar 3, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 589 | $31.46 | $18.5K | 888,002 |
| Mar 3, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 267 | $31.46 | $8.4K | 37,208 |
| Mar 3, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 166 | $31.46 | $5.2K | 22,540 |
| Feb 9, 2022 | Fry John J | General Counsel & Secretary | Sell | 481 | $34.97 | $16.8K | 31,124 |
| Feb 9, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 1,364 | $34.97 | $47.7K | 888,433 |
| Feb 9, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 318 | $34.97 | $11.1K | 37,404 |
| Feb 9, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 292 | $34.97 | $10.2K | 22,662 |
| Feb 4, 2022 | Duffy David C. | SVP R&D and CTO | Sell | 3,266 | $30.91 | $101.0K | 57,996 |
| Feb 4, 2022 | Fry John J | General Counsel & Secretary | Sell | 371 | $31.46 | $11.7K | 31,704 |
| Feb 4, 2022 | HRUSOVSKY E KEVIN | Chairman and CEO | Sell | 589 | $31.46 | $18.5K | 889,955 |
| Feb 4, 2022 | Mattoon Dawn | Sr. VP, Diagnostics | Sell | 267 | $31.46 | $8.4K | 37,793 |
| Feb 4, 2022 | Roskey Mark T. | SVP, Strategic Partnerships | Sell | 166 | $31.46 | $5.2K | 22,998 |
| Jan 31, 2022 | Duffy David C. | SVP R&D and CTO | Sell | 3,266 | $30.00 | $98.0K | 61,262 |
QTRX Insiders
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