David R. Walt serves as Executive at Quanterix Corp, where they oversee executive responsibilities. Since joining the company, David R. Walt has executed 4246 insider transactions totaling $122.5M, demonstrating a bearish approach to their equity position. Their most recent transaction on Oct 1, 2025 involved receiving (via award) 2,594 shares valued at $14.4K.
David R. Walt currently holds 1,871,675 shares of Quanterix Corp (QTRX), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, David R. Walt has been a net seller of QTRX stock. They have purchased $9.4M and sold $113.1M worth of shares.
David R. Walt's most recent insider trade was on Oct 1, 2025, when they sold 2,594 shares at $5.54 per share.
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| $6.69 |
| Discretionary |
| Aug 20, 2024 | QTRX | $624.6K | Purchase | 47,000 | $13.29 | Discretionary |
| Jan 2, 2024 | QTRX | $0 | Award | 2,947 | $N/A | Discretionary |
| Mar 9, 2023 | QTRX | $0 | Gift | 1,000 | $N/A | Discretionary |
| Jan 3, 2023 | QTRX | $0 | Award | 8,083 | $N/A | Discretionary |
| Oct 12, 2022 | QTRX | $0 | Gift | 1,000 | $N/A | Discretionary |
| Aug 10, 2022 | QTRX | $1.3M | Purchase | 150,000 | $8.62 | Discretionary |
| Jan 3, 2022 | QTRX | $0 | Award | 2,668 | $N/A | Discretionary |
| Jan 4, 2021 | QTRX | $0 | Award | 2,270 | $N/A | Discretionary |
| Mar 13, 2020 | XCUR | $352.2K | Purchase | 291,066 | $1.21 | Discretionary |
| Mar 13, 2020 | QTRX | $900.7K | Purchase | 54,064 | $16.66 | Discretionary |
| Jan 2, 2020 | QTRX | $0 | Award | 2,270 | $N/A | Discretionary |
| Aug 2, 2019 | XCUR | $2.0M | Purchase | 1,000,000 | $2.00 | Discretionary |
| Jan 2, 2019 | QTRX | $0 | Award | 2,270 | $N/A | Discretionary |
| Aug 7, 2018 | QTRX | $0 | Award | 2,270 | $N/A | Discretionary |
| Dec 11, 2017 | QTRX | $3.0M | Purchase | 200,000 | $15.00 | Discretionary |
| Dec 11, 2017 | QTRX | $0 | Conversion | 135,647 | $N/A | Discretionary |
| Dec 11, 2017 | QTRX | $0 | Conversion | 28,691 | $N/A | Discretionary |
| Dec 11, 2017 | QTRX | $0 | Conversion | 32,959 | $N/A | Discretionary |
| Dec 11, 2017 | QTRX | $0 | Conversion | 86,517 | $N/A | Discretionary |
| Dec 11, 2017 | QTRX | $0 | Conversion | 334,985 | $N/A | Discretionary |
| Sep 26, 2017 | XCUR | $0 | Award | 499,378 | $N/A | Discretionary |
| Sep 26, 2017 | XCUR | $805.0K | Purchase | 268,333 | $3.00 | Discretionary |
| Jan 3, 2017 | CERU | $11.5K | Award | 14,935 | $0.77 | Discretionary |
| Oct 3, 2016 | CERU | $11.5K | Award | 11,274 | $1.02 | Discretionary |
| Apr 7, 2016 | ILMN | $168.3K | Sale | 1,000 | $168.34 | Discretionary |
| Apr 7, 2016 | ILMN | $201.0K | Sale | 1,200 | $167.52 | Discretionary |
| Apr 7, 2016 | ILMN | $17.2K | Sale | 100 | $172.30 | Discretionary |
| Apr 7, 2016 | ILMN | $102.5K | Sale | 600 | $170.78 | Discretionary |