Form 4 for QTRX Quanterix Corp
Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-15 · accession 0002120516-26-000004 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-03-17 | 2026-03-15 | QTRX | Miller Michael Francis | COO | M - OptEx | — | +1,558 | 30.3K | +5% | — |
| DM | 2026-03-17 | 2026-03-15 | QTRX | Miller Michael Francis | COO | F - Tax | $4.72 | -549 | 30.4K | -2% | -$2,591 |
| DM | 2026-03-17 | 2026-03-15 | QTRX | Miller Michael Francis | COO | M - OptEx | $0.00 | -1,558 | 8,855 | -15% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-15 | M | A | 136 | — | 30,450 | D | — | — | (F1) Restricted stock units convert into common stock on a one-for-one basis. |
| 2 | Common | Common Stock | 2026-03-15 | F | D | 293 | $4.72 | 31,271 | D | — | — | |
| 3 | Common | Common Stock | 2026-03-15 | M | A | 135 | — | 30,537 | D | — | — | (F1) Restricted stock units convert into common stock on a one-for-one basis. |
| 4 | Common | Common Stock | 2026-03-15 | F | D | 48 | $4.72 | 30,489 | D | — | — | |
| 5 | Common | Common Stock | 2026-03-15 | M | A | 372 | — | 30,861 | D | — | — | (F1) Restricted stock units convert into common stock on a one-for-one basis. |
| 6 | Common | Common Stock | 2026-03-15 | F | D | 131 | $4.72 | 30,730 | D | — | — | |
| 7 | Common | Common Stock | 2026-03-15 | M | A | 834 | — | 31,564 | D | — | — | (F1) Restricted stock units convert into common stock on a one-for-one basis. |
| 8 | Common | Common Stock | 2026-03-15 | F | D | 29 | $4.72 | 30,314 | D | — | — | |
| 9 | Common | Common Stock | 2026-03-15 | M | A | 81 | — | 30,343 | D | — | — | (F1) Restricted stock units convert into common stock on a one-for-one basis. |
| 10 | Common | Common Stock | 2026-03-15 | F | D | 48 | $4.72 | 30,402 | D | — | — | |
| 11 | Derivative | Restricted Stock Unit | 2026-03-15 | M | D | 81 | $0.00 | 922 | D | $0.00 · — to — | 81 Common Stock | (F2) On February 6, 2023, the reporting person was granted 3,929 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter. |
| 12 | Derivative | Restricted Stock Unit | 2026-03-15 | M | D | 136 | $0.00 | 1,661 | D | $0.00 · — to — | 136 Common Stock | (F3) On March 15, 2023, the reporting person was granted 6,566 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter. |
| 13 | Derivative | Restricted Stock Unit | 2026-03-15 | M | D | 135 | $0.00 | 3,116 | D | $0.00 · — to — | 135 Common Stock | (F4) On February 2, 2024, the reporting person was granted 6,494 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter. |
| 14 | Derivative | Restricted Stock Unit | 2026-03-15 | M | D | 372 | $0.00 | 9,689 | D | $0.00 · — to — | 372 Common Stock | (F5) On May 21, 2024, the reporting person was granted 17,878 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter. |
| 15 | Derivative | Restricted Stock Unit | 2026-03-15 | M | D | 834 | $0.00 | 8,855 | D | $0.00 · — to — | 834 Common Stock | (F6) On February 4, 2025, the reporting person was granted 40,036 restricted stock units, vesting 25% on the first anniversary of the grant date, with the remaining 75% vesting in 36 equal monthly installments on the 15th day of each month thereafter. |