Quanterix Corp (QTRX)
$2.58-$0.06 (-2.14%) Today
Latest QTRX Insider Trades
William P. Donnelly - DirectorOpen-market purchase$75K
William P. Donnelly - DirectorWilliam P. Donnelly - DirectorWilliam P. Donnelly - DirectorWilliam P. Donnelly - DirectorQuanterix Corp is a life sciences company accelerating biomarker breakthroughs from discovery to diagnostics using ultra-sensitive translational research and spatial biology instruments, consumables, and services. The company sells proprietary instruments and related consumables to research laboratories, contract research organizations (CROs), academic institutions, and bio-pharmaceutical companies, and provides contract research services and clinical laboratory testing services, including four Laboratory Developed Tests (LDTs), through its Accelerator Laboratory. Its products include Simoa, Assay Kits, LDTs & Assay Services, Simoa p-Tau 217, Simoa NfL LDT, Simoa p-Tau 181 LDT, and SP-X Imaging and Analysis System. Geographically, it operates in North America, EMEA, and the Asia Pacific.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 3 | 102,900 | $296K |
| Grant or award | 3 | 150,748 | |
| Option exercise | 50 | 59,600 | |
| Tax withholding / forfeiture | 21 | 2,066 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
81 Form 4 filings on record, the earliest from Oct 1, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jeffrey Thomas Elliott - Director | Option exercise | Common Stock | 3,955 | - | - | |
| Jeffrey Thomas Elliott - Director | Option exercise | Restricted Stock Unit | 3,955 | $0.00 | - | |
| William P. Donnelly - Director | Option exercise | Common Stock | 2,802 | - | - | |
| William P. Donnelly - Director | Option exercise | Restricted Stock Unit | 2,802 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 81 | - | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 25 | $2.59 | $65 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 136 | - | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $2.59 | $106 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 135 | - | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $2.59 | $106 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 372 | - | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 111 | $2.59 | $287 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 834 | - | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 249 | $2.59 | $645 | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 81 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 136 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 135 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 372 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 834 | $0.00 | - | |
| William P. Donnelly - Director | Open-market purchase | Common Stock | 27,155 | $2.75 | $75K | |
| William P. Donnelly - Director | Open-market purchase | Common Stock | 72,245 | $2.93 | $212K | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 130 | - | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 39 | $3.48 | $136 | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Units | 130 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 25 | $4.24 | $106 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $4.24 | $174 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $4.24 | $174 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 111 | $4.24 | $471 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 249 | $4.24 | $1K | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 81 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 136 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 135 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 372 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 834 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 81 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 136 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 135 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 372 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 834 | $0.00 | - | |
 Jason F. Faessler - Officer | Grant or award | Restricted Stock Unit | 141,820 | $0.00 | - | |
 Scott Mendel | Option exercise | Common Stock | 8,073 | - | - | |
| Scott Mendel | Option exercise | Restricted Stock Unit | 8,073 | $0.00 | - | |
 Goldman Myla Lai | Option exercise | Common Stock | 8,073 | - | - | |
| Goldman Myla Lai | Option exercise | Restricted Stock Unit | 8,073 | $0.00 | - | |
| Scott Mendel | Grant or award | Common Stock | 3,456 | $4.34 | $15K | |
| William P. Donnelly | Grant or award | Common Stock | 5,472 | $4.34 | $24K | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 39 | $4.32 | $168 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 130 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 130 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 514 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 1,056 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 79 | $3.10 | $245 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 154 | $3.10 | $477 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 315 | $3.10 | $977 | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 263 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 514 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 1,056 | - | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 263 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 136 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 135 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 372 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 834 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 81 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 136 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 135 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 372 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 834 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 25 | $3.10 | $78 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $3.10 | $127 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $3.10 | $127 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 111 | $3.10 | $344 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 249 | $3.10 | $772 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 81 | - | - | |
| Benjamin Meadows - Officer | Open-market purchase | Common Stock | 3,500 | $2.77 | $10K | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 39 | $3.06 | $119 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 130 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 130 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 79 | $2.75 | $217 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 154 | $2.75 | $424 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 315 | $2.75 | $866 | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 263 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 514 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 1,056 | - | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 263 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 514 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 1,056 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 25 | $2.75 | $69 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $2.75 | $113 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $2.75 | $113 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 111 | $2.75 | $305 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 249 | $2.75 | $685 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 81 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 136 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 135 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 372 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 834 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 81 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 136 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 135 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 372 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 834 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 39 | $3.13 | $122 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 130 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 130 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 25 | $3.60 | $90 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $3.60 | $148 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 41 | $3.60 | $148 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 111 | $3.60 | $400 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 249 | $3.60 | $896 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 81 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 136 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 135 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 372 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 834 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 81 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 136 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 135 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 372 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 834 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 263 | - | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 79 | $3.60 | $284 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 154 | $3.60 | $554 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 315 | $3.60 | $1K | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 514 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 1,056 | - | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 263 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 514 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 1,056 | $0.00 | - | |
| William P. Donnelly - Officer | Grant or award | Common Stock | 6,178 | $0.00 | - | |
| Scott Mendel | Grant or award | Common Stock | 4,310 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 30 | $3.52 | $106 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 39 | $3.52 | $137 | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 99 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 130 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 99 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 130 | $0.00 | - | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 29 | $4.72 | $137 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 48 | $4.72 | $227 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 48 | $4.72 | $227 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 131 | $4.72 | $618 | |
| Michael Francis Miller - Officer | Tax withholding / forfeiture | Common Stock | 293 | $4.72 | $1K | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 136 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 135 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 372 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 81 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Common Stock | 834 | - | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 81 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 136 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 135 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 372 | $0.00 | - | |
| Michael Francis Miller - Officer | Option exercise | Restricted Stock Unit | 834 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 93 | $4.72 | $439 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 181 | $4.72 | $854 | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 371 | $4.72 | $2K | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 263 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 514 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 1,056 | - | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 263 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 514 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 1,056 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 179 | $5.74 | $1K | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 92 | $5.74 | $528 | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 514 | - | - | |
| Vandana Sriram - Officer | Option exercise | Common Stock | 263 | - | - | |
| Vandana Sriram - Officer | Grant or award | Performance Stock Unit | 74,905 | $0.00 | - | |
| Vandana Sriram - Officer | Grant or award | Restricted Stock Unit | 74,905 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 263 | $0.00 | - | |
| Vandana Sriram - Officer | Option exercise | Restricted Stock Unit | 514 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 4,395 | $0.00 | - | |
 Everett Cunningham - Officer | Grant or award | Performance-Based Restricted Stock Units | 813,750 | $0.00 | - | |
| Everett Cunningham - Officer | Grant or award | Time-Based Restricted Stock Units | 1,070,000 | $0.00 | - | |
| Vandana Sriram - Officer | Tax withholding / forfeiture | Common Stock | 274 | $7.95 | $2K |
Quanterix Corp (QTRX) had 16 insider filings in the last 90 days, with the most recent on 2026-08-20. The full record for QTRX runs to 81 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
3 insider purchases of QTRX were filed in the last 90 days, totaling $296K.
No insider sales of QTRX were filed in the last 90 days.
This page tracks QTRX Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
