Quanterix Corp — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Toloue Masoud | President & CEO | Tax Withholding | 1,120 | $17.15 | $19,208 | 341,318 | Apr 15, 2024 |
| DONNELLY WILLIAM P | — | Award / Grant | 525 | $23.78 | $12,485 | 32,598 | Apr 1, 2024 |
| MEISTER PAUL M | — | Award / Grant | 630 | $23.78 | $14,981 | 293,347 | Apr 1, 2024 |
| Hlavinka Sarah E. | — | Award / Grant | 630 | $23.78 | $14,981 | 43,619 | Apr 1, 2024 |
| OLSON LAURIE J | — | Sale | 1,000 | $23.50 | $23,500 | 15,238 | Apr 1, 2024 |
| Toloue Masoud | President & CEO | Tax Withholding | 1,120 | $23.56 | $26,387 | 342,438 | Mar 31, 2024 |
| Toloue Masoud | President & CEO | Tax Withholding | 1,120 | $26.55 | $29,736 | 343,558 | Mar 15, 2024 |
| Toloue Masoud | President & CEO | Tax Withholding | 724 | $23.96 | $17,347 | 344,678 | Feb 29, 2024 |
| OLSON LAURIE J | — | Sale | 1,500 | $24.35 | $36,525 | 15,238 | Feb 14, 2024 |
| Sriram Vandana | Chief Financial Officer | Award / Grant | 24,675 | — | — | 37,299 | Feb 2, 2024 |
| Toloue Masoud | President & CEO | Tax Withholding | 8,397 | $23.10 | $193,971 | 345,402 | Feb 2, 2024 |
| Toloue Masoud | President & CEO | Tax Withholding | 763 | $22.09 | $16,855 | 286,267 | Jan 31, 2024 |
| WALT DAVID R | — | Award / Grant | 2,947 | — | — | 1,442,342 | Jan 2, 2024 |
| OLSON LAURIE J | — | Sale | 1,000 | $26.91 | $26,910 | 16,738 | Jan 2, 2024 |
| Madaus Martin D | — | Award / Grant | 2,947 | — | — | 29,473 | Jan 2, 2024 |
| Flynn Karen | — | Award / Grant | 2,947 | — | — | 26,405 | Jan 2, 2024 |
| Blaser Brian J | — | Award / Grant | 2,947 | — | — | 19,049 | Jan 2, 2024 |
| MEISTER PAUL M | — | Award / Grant | 2,947 | — | — | 292,165 | Jan 2, 2024 |
| DONNELLY WILLIAM P | — | Award / Grant | 460 | $27.15 | $12,489 | 32,073 | Jan 2, 2024 |
| Hlavinka Sarah E. | — | Award / Grant | 2,947 | — | — | 42,437 | Jan 2, 2024 |
| Toloue Masoud | President & CEO | Tax Withholding | 859 | $27.34 | $23,485 | 287,030 | Dec 31, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $23.97 | $15,293 | 287,889 | Nov 30, 2023 |
| OLSON LAURIE J | — | Sale | 1,500 | $21.89 | $32,835 | 13,791 | Nov 14, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $21.72 | $13,857 | 288,527 | Oct 31, 2023 |
| Hlavinka Sarah E. | — | Award / Grant | 561 | $26.71 | $14,984 | 39,490 | Oct 2, 2023 |
| MEISTER PAUL M | — | Award / Grant | 561 | $26.71 | $14,984 | 289,218 | Oct 2, 2023 |
| DONNELLY WILLIAM P | — | Award / Grant | 228 | $26.71 | $6,090 | 28,666 | Oct 2, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 117 | $27.14 | $3,175 | 88,332 | Sep 30, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $27.14 | $17,315 | 289,165 | Sep 30, 2023 |
| DONNELLY WILLIAM P | — | Purchase | 20,200 | $24.85 | $501,970 | 28,438 | Sep 8, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 117 | $26.80 | $3,136 | 88,449 | Aug 31, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $26.80 | $17,098 | 289,803 | Aug 31, 2023 |
| Sriram Vandana | Chief Financial Officer | Award / Grant | 12,624 | — | — | 12,624 | Aug 21, 2023 |
| DONNELLY WILLIAM P | — | Award / Grant | 8,238 | — | — | 8,238 | Aug 17, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $24.84 | $15,848 | 290,441 | Jul 31, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 117 | $24.84 | $2,906 | 88,566 | Jul 31, 2023 |
| MEISTER PAUL M | — | Award / Grant | 687 | $21.82 | $14,990 | 288,657 | Jul 3, 2023 |
| Hlavinka Sarah E. | — | Award / Grant | 687 | $21.82 | $14,990 | 38,929 | Jul 3, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 117 | $22.55 | $2,638 | 88,683 | Jun 30, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $22.55 | $14,387 | 291,079 | Jun 30, 2023 |
| MEISTER PAUL M | — | Option Exercise | 23,335 | $2.89 | $67,438 | 287,970 | Jun 7, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 117 | $19.61 | $2,294 | 88,800 | May 31, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $19.61 | $12,511 | 291,717 | May 31, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 638 | $12.64 | $8,064 | 292,355 | Apr 25, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 119 | $12.64 | $1,504 | 88,917 | Apr 7, 2023 |
| CRANDELL KEITH | — | Award / Grant | 1,170 | $11.16 | $13,057 | 131,236 | Apr 3, 2023 |
| Hlavinka Sarah E. | — | Award / Grant | 1,344 | $11.16 | $14,999 | 38,242 | Apr 3, 2023 |
| MEISTER PAUL M | — | Award / Grant | 1,344 | $11.16 | $14,999 | 264,635 | Apr 3, 2023 |
| DOYLE MICHAEL A | CFO and Treasurer | Tax Withholding | 35 | $11.27 | $394 | 90,042 | Mar 31, 2023 |
| Toloue Masoud | President & CEO | Tax Withholding | 414 | $11.27 | $4,666 | 295,676 | Mar 31, 2023 |