Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- 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>>

Common stock purchase or sale:
Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
2025-06-12 Purchase | 2025-06-13 4:39 pm | Quanterix Corp | QTRX | WALT DAVID R Director | 160,000 | $6.1561 | $984,968 | 1,866,933 (Direct) | View |
2025-06-09 Purchase | 2025-06-10 4:08 pm | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 45,900 | $5.4188 | $248,723 | 518,922 (Direct) | View |
2025-06-06 Purchase | 2025-06-09 5:44 pm | Quanterix Corp | QTRX | WALT DAVID R Director | 210,000 | $5.399 | $1,133,796 | 1,706,933 (Direct) | View |
2025-06-06 Purchase | 2025-06-09 5:10 pm | Quanterix Corp | QTRX | DONNELLY WILLIAM P Director | 93,113 | $5.438 | $506,348 | 139,094 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
2025-08-15 Tax Withholding | 2025-08-19 4:38 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 229 | $4.57 | 83,050 (Direct) | View |
2025-08-15 Tax Withholding | 2025-08-19 4:36 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 1,242 | $4.57 | 514,688 (Direct) | View |
2025-07-31 Tax Withholding | 2025-08-04 4:03 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 254 | $5.94 | 515,930 (Direct) | View |
2025-07-15 Tax Withholding | 2025-07-17 4:38 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 229 | $5.49 | 83,279 (Direct) | View |
2025-07-15 Tax Withholding | 2025-07-17 4:37 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 1,242 | $5.49 | 516,184 (Direct) | View |
2025-07-08 Option Award | 2025-07-10 8:39 pm | N/A 2035-07-08 | Quanterix Corp | QTRX | LAI GOLDMAN MYLA Director | 78,162 | $0 | 78,162 (Direct) | View |
2025-07-08 Option Award | 2025-07-10 8:39 pm | N/A 2035-07-08 | Quanterix Corp | QTRX | Mendel Scott Director | 79,411 | $0 | 79,411 (Direct) | View |
2025-07-01 Option Award | 2025-07-03 2:37 pm | N/A N/A | Quanterix Corp | QTRX | Hlavinka Sarah E. Director | 2,615 | $6.69 | 60,070 (Direct) | View |
2025-07-01 Option Award | 2025-07-02 5:39 pm | N/A N/A | Quanterix Corp | QTRX | MEISTER PAUL M Director | 2,242 | $6.69 | 309,279 (Direct) | View |
2025-07-01 Option Award | 2025-07-02 5:37 pm | N/A N/A | Quanterix Corp | QTRX | DONNELLY WILLIAM P Director | 4,204 | $6.69 | 143,298 (Direct) | View |
2025-07-01 Option Award | 2025-07-02 5:35 pm | N/A N/A | Quanterix Corp | QTRX | WALT DAVID R Director | 2,148 | $6.69 | 1,869,081 (Direct) | View |
2025-06-30 Tax Withholding | 2025-07-02 4:27 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 254 | $6.65 | 517,426 (Direct) | View |
2025-06-15 Tax Withholding | 2025-06-17 5:18 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 1,242 | $6.06 | 517,680 (Direct) | View |
2025-06-15 Tax Withholding | 2025-06-17 5:18 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 229 | $6.06 | 83,508 (Direct) | View |
2025-05-31 Tax Withholding | 2025-06-03 4:19 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 254 | $5.2 | 473,022 (Direct) | View |
2025-05-15 Tax Withholding | 2025-05-19 09:15 am | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 229 | $4.5 | 83,737 (Direct) | View |
2025-05-15 Tax Withholding | 2025-05-19 09:14 am | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 1,242 | $4.5 | 473,276 (Direct) | View |
2025-04-30 Tax Withholding | 2025-05-02 4:05 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 254 | $5.76 | 474,518 (Direct) | View |
2025-04-15 Tax Withholding | 2025-04-17 4:01 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 229 | $5.36 | 83,966 (Direct) | View |
2025-04-15 Tax Withholding | 2025-04-17 4:01 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 1,242 | $5.16 | 474,772 (Direct) | View |
2025-04-01 Option Award | 2025-04-03 4:15 pm | N/A N/A | Quanterix Corp | QTRX | WALT DAVID R Director | 2,156 | $6.665 | 1,496,933 (Direct) | View |
2025-04-01 Option Award | 2025-04-03 4:14 pm | N/A N/A | Quanterix Corp | QTRX | MEISTER PAUL M Director | 2,479 | $6.665 | 307,037 (Direct) | View |
2025-04-01 Option Award | 2025-04-03 4:14 pm | N/A N/A | Quanterix Corp | QTRX | Hlavinka Sarah E. Director | 2,625 | $6.665 | 57,455 (Direct) | View |
2025-04-01 Option Award | 2025-04-03 4:14 pm | N/A N/A | Quanterix Corp | QTRX | DONNELLY WILLIAM P Director | 2,681 | $6.665 | 45,981 (Direct) | View |
2025-03-31 Tax Withholding | 2025-04-02 4:52 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 254 | $6.51 | 476,014 (Direct) | View |
2025-03-15 Tax Withholding | 2025-03-18 6:25 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 1,242 | $7.06 | 476,268 (Direct) | View |
2025-03-15 Tax Withholding | 2025-03-18 6:22 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 229 | $7.06 | 84,195 (Direct) | View |
2025-02-28 Tax Withholding | 2025-03-04 4:03 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 247 | $7.59 | 477,510 (Direct) | View |
2025-02-15 Tax Withholding | 2025-02-19 4:13 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 92 | $8.05 | 84,424 (Direct) | View |
2025-02-15 Tax Withholding | 2025-02-19 4:13 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 752 | $8.05 | 477,757 (Direct) | View |
2025-02-04 Option Award | 2025-02-06 5:01 pm | N/A 2035-02-04 | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 216,831 | $0 | 250,635 (Direct) | View |
2025-02-04 Option Award | 2025-02-06 5:00 pm | N/A 2035-02-04 | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 593,431 | $0 | 933,150 (Direct) | View |
2025-02-02 Tax Withholding | 2025-02-04 9:39 pm | N/A N/A | Quanterix Corp | QTRX | Sriram Vandana Chief Financial Officer | 2,166 | $9.19 | 33,804 (Direct) | View |
2025-01-31 Tax Withholding | 2025-02-04 9:33 pm | N/A N/A | Quanterix Corp | QTRX | Toloue Masoud President & CEO | 6,375 | $9.19 | 339,719 (Direct) | View |