| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| WALT DAVID R | Director | C/O QUANTERIX CORPORATION,, 900 MIDDLESEX TURNPIKE, BILLERICA | /s/ Bonnie McManus, Attorney-in-Fact | 06 Jan 2026 | 0001205236 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | QTRX | Common Stock | Award | $0 | +1,215 | +0.06% | $0.000000 | 1,872,890 | 02 Jan 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Consists of stock granted in lieu of cash fees for service on the Company's Board of Directors and committees thereof for the fourth quarter of 2025. |