Toloue Masoud, President and CEO of Quanterix Corp ($QTRX), made one open market purchase of company shares in the last 365 days, totaling about $249,000. The most recent buy occurred on June 9, 2025. This purchase ranks 1,367th among 4,983 individual insiders in our database by dollar amount, compared to an average of $1.5 million per insider and 3.29 transactions. Masoud reported no open market sales during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 15, 2026 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1817 | $7.95 | 507,310.0000 | 46,710,797 | 0.36% | 0.00% |
| Dec. 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 258 | $6.36 | 508,446.0000 | 46,710,797 | 0.05% | 0.00% |
| Dec. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $7.41 | 508,704.0000 | 46,710,797 | 0.24% | 0.00% |
| Nov. 30, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $7.26 | 509,946.0000 | 46,710,797 | 0.05% | 0.00% |
| Nov. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $5.74 | 510,200.0000 | 46,710,797 | 0.24% | 0.00% |
| Oct. 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $5.34 | 511,442.0000 | 38,776,208 | 0.05% | 0.00% |
| Oct. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $5.78 | 511,696.0000 | 38,776,208 | 0.24% | 0.00% |
| Sept. 30, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $5.43 | 512,938.0000 | 38,776,208 | 0.05% | 0.00% |
| Sept. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $4.97 | 513,192.0000 | 38,776,208 | 0.24% | 0.00% |
| Aug. 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $4.55 | 514,434.0000 | 38,776,208 | 0.05% | 0.00% |
| Aug. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $4.57 | 514,688.0000 | 38,776,208 | 0.24% | 0.00% |
| July 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $5.94 | 515,930.0000 | 38,776,208 | 0.05% | 0.00% |
| July 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $5.49 | 516,184.0000 | 38,776,208 | 0.24% | 0.00% |
| June 30, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $6.65 | 517,426.0000 | 38,776,208 | 0.05% | 0.00% |
| June 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $6.06 | 517,680.0000 | 38,776,208 | 0.24% | 0.00% |
| June 9, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | P | Common Stock | 45900 | $5.42 | 518,922.0000 | 38,776,208 | 9.70% | 0.12% |
| May 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $5.20 | 473,022.0000 | 38,776,208 | 0.05% | 0.00% |
| May 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $4.50 | 473,276.0000 | 38,776,208 | 0.26% | 0.00% |
| April 30, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $5.76 | 474,518.0000 | 38,776,208 | 0.05% | 0.00% |
| April 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $5.16 | 474,772.0000 | 38,776,208 | 0.26% | 0.00% |
| March 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 254 | $6.51 | 476,014.0000 | 38,776,208 | 0.05% | 0.00% |
| March 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1242 | $7.06 | 476,268.0000 | 38,776,208 | 0.26% | 0.00% |
| Feb. 28, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 247 | $7.59 | 477,510.0000 | 0 | 0.05% | 0.00% |
| Feb. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 752 | $8.05 | 477,757.0000 | 0 | 0.16% | 0.00% |
| Feb. 4, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | A | Stock Option (right to buy) | 454641 | $0.00 | 454,641.0000 | 0 | 9999.99% | 0.00% |
| Feb. 4, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | A | Common Stock | 138790 | $0.00 | 478,509.0000 | 0 | 40.85% | 0.00% |
| Jan. 31, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 298 | $9.19 | 345,796.0000 | 0 | 0.09% | 0.00% |
| Feb. 2, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 6077 | $9.19 | 339,719.0000 | 0 | 1.76% | 0.00% |
| Jan. 15, 2025 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 906 | $8.62 | 346,094.0000 | 0 | 0.26% | 0.00% |
| Dec. 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 415 | $10.63 | 347,000.0000 | 0 | 0.12% | 0.00% |
| Dec. 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 752 | $10.68 | 347,415.0000 | 0 | 0.22% | 0.00% |
| Nov. 30, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 368 | $12.33 | 348,167.0000 | 0 | 0.11% | 0.00% |
| Nov. 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $11.44 | 348,535.0000 | 0 | 0.32% | 0.00% |
| Oct. 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 368 | $13.22 | 349,655.0000 | 0 | 0.11% | 0.00% |
| Oct. 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $12.48 | 350,023.0000 | 0 | 0.32% | 0.00% |
| Sept. 30, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 368 | $12.50 | 351,143.0000 | 0 | 0.10% | 0.00% |
| Sept. 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $12.82 | 351,511.0000 | 0 | 0.32% | 0.00% |
| Aug. 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 368 | $13.03 | 352,631.0000 | 0 | 0.10% | 0.00% |
| Aug. 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $11.35 | 352,999.0000 | 0 | 0.32% | 0.00% |
| Aug. 13, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | P | Common Stock | 19000 | $10.90 | 354,119.0000 | 0 | 5.67% | 0.00% |
| July 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 368 | $14.76 | 335,119.0000 | 0 | 0.11% | 0.00% |
| July 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $15.08 | 335,487.0000 | 0 | 0.33% | 0.00% |
| June 30, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 368 | $13.21 | 336,607.0000 | 0 | 0.11% | 0.00% |
| June 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $13.32 | 336,975.0000 | 0 | 0.33% | 0.00% |
| May 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1054 | $15.97 | 338,095.0000 | 0 | 0.31% | 0.00% |
| May 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $17.88 | 339,149.0000 | 0 | 0.33% | 0.00% |
| April 30, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1049 | $16.12 | 340,269.0000 | 0 | 0.31% | 0.00% |
| April 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $17.15 | 341,318.0000 | 0 | 0.33% | 0.00% |
| March 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $23.56 | 342,438.0000 | 0 | 0.33% | 0.00% |
| March 15, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 1120 | $26.55 | 343,558.0000 | 0 | 0.32% | 0.00% |
| Feb. 29, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 724 | $23.96 | 344,678.0000 | 0 | 0.21% | 0.00% |
| Feb. 2, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | A | Common Stock | 67532 | $0.00 | 353,799.0000 | 0 | 23.59% | 0.00% |
| Feb. 2, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 8397 | $23.10 | 345,402.0000 | 0 | 2.37% | 0.00% |
| Feb. 2, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | A | Stock Option (right to buy) | 227262 | $0.00 | 227,262.0000 | 0 | 9999.99% | 0.00% |
| Jan. 31, 2024 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 763 | $22.09 | 286,267.0000 | 0 | 0.27% | 0.00% |
| Dec. 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 859 | $27.34 | 287,030.0000 | 0 | 0.30% | 0.00% |
| Nov. 30, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $23.97 | 287,889.0000 | 0 | 0.22% | 0.00% |
| Oct. 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $21.72 | 288,527.0000 | 0 | 0.22% | 0.00% |
| Sept. 30, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $27.14 | 289,165.0000 | 0 | 0.22% | 0.00% |
| Aug. 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $26.80 | 289,803.0000 | 0 | 0.22% | 0.00% |
| July 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $24.84 | 290,441.0000 | 0 | 0.22% | 0.00% |
| June 30, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $22.55 | 291,079.0000 | 0 | 0.22% | 0.00% |
| May 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $19.61 | 291,717.0000 | 0 | 0.22% | 0.00% |
| April 30, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 638 | $12.64 | 292,355.0000 | 0 | 0.22% | 0.00% |
| April 25, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 2683 | $11.67 | 292,993.0000 | 0 | 0.91% | 0.00% |
| March 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 414 | $11.27 | 295,676.0000 | 0 | 0.14% | 0.00% |
| Feb. 28, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 418 | $11.00 | 296,090.0000 | 0 | 0.14% | 0.00% |
| Feb. 2, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | A | Stock Option (right to buy) | 259416 | $0.00 | 259,416.0000 | 0 | 9999.99% | 0.00% |
| Feb. 2, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | A | Common Stock | 111178 | $0.00 | 296,508.0000 | 0 | 59.99% | 0.00% |
| Jan. 31, 2023 | Quanterix Corp | $QTRX | Toloue Masoud | President & CEO | F | Common Stock | 493 | $14.13 | 185,330.0000 | 0 | 0.27% | 0.00% |