Walt David R bought Quanterix Corp ($QTRX) shares on the open market four times in the last year, totaling about $2.1 million, with his most recent purchase on June 13, 2025. His buying activity ranks 298th among nearly 5,000 individual insiders, surpassing the average purchase amount of $1.5 million and 3.3 transactions. He made 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. 2, 2026 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 1215 | $0.00 | 1,872,890.0000 | 46,710,797 | 0.06% | 0.00% |
| Oct. 1, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 2594 | $5.54 | 1,871,675.0000 | 38,776,208 | 0.14% | 0.01% |
| July 1, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 2148 | $6.69 | 1,869,081.0000 | 38,776,208 | 0.12% | 0.01% |
| June 12, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | P | Common Stock | 36010 | $6.23 | 1,742,943.0000 | 38,776,208 | 2.11% | 0.09% |
| June 13, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | P | Common Stock | 123990 | $6.14 | 1,866,933.0000 | 38,776,208 | 7.11% | 0.32% |
| June 6, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | P | Common Stock | 131869 | $5.43 | 1,628,802.0000 | 38,776,208 | 8.81% | 0.34% |
| June 9, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | P | Common Stock | 78131 | $5.34 | 1,706,933.0000 | 38,776,208 | 4.80% | 0.20% |
| April 1, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 2156 | $6.67 | 1,496,933.0000 | 38,776,208 | 0.14% | 0.01% |
| Jan. 2, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Stock Option (Right to Buy) | 15821 | $0.00 | 15,821.0000 | 0 | 9999.99% | 0.00% |
| Jan. 2, 2025 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 7435 | $0.00 | 1,494,777.0000 | 0 | 0.50% | 0.00% |
| Oct. 12, 2022 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | G | Common Stock | 1000 | $0.00 | 1,441,342.0000 | 0 | 0.07% | 0.00% |
| Aug. 20, 2024 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | P | Common Stock | 47000 | $13.29 | 1,487,342.0000 | 0 | 3.26% | 0.00% |
| March 9, 2023 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | G | Common Stock | 1000 | $0.00 | 1,440,342.0000 | 0 | 0.07% | 0.00% |
| Jan. 2, 2024 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 2947 | $0.00 | 1,442,342.0000 | 0 | 0.20% | 0.00% |
| Jan. 2, 2024 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Stock Option (Right to Buy) | 6412 | $0.00 | 6,412.0000 | 0 | 9999.99% | 0.00% |
| Jan. 3, 2023 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Stock Option (Right to Buy) | 12124 | $0.00 | 12,124.0000 | 0 | 9999.99% | 0.00% |
| Jan. 3, 2023 | Quanterix Corp | $QTRX | WALT DAVID R | Not found | A | Common Stock | 8083 | $0.00 | 1,439,395.0000 | 0 | 0.56% | 0.00% |