SEC Form 4 · accession 0002120516-26-000014
Quanterix Corp · QTRX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Michael Francis Miller
Officer — Chief Technology Officer
Period of report
Jul 31, 2026
Accepted (ET)
Aug 4, 2026 · 4:45 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001503274
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Jul 31, 2026 | M | 130 | — | A | 36,198 | D | |
| Common Stock | Jul 31, 2026 | F | 39 | $3.48 | D | 36,159 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF2 | $0.00 | Jul 31, 2026 | M | 130 | D | — | — | Common Stock | 130 | 159 | D |
Explanation of responses
- F1Restricted stock units convert into common stock on a one-for-one basis.
- F2On September 23, 2022, the reporting person was granted 6,278 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 last day of each month thereafter.