Toloue Masoud 4
4 · Quanterix Corp · Filed Jan 5, 2026
Insider Transaction Report
Form 4
Quanterix CorpQTRX
Toloue Masoud
DirectorPresident & CEO
Transactions
- Tax Payment
Common Stock
[F1][F2]2025-12-31$6.36/sh−258$1,641→ 508,446 total
Footnotes (2)
- [F1]Shares withheld by Quanterix Corporation solely to cover tax obligations upon vesting of 761 restricted stock units (RSUs).
- [F2]Includes 211,362 RSUs.
Signature
/s/ Bonnie McManus, Attorney-in-Fact|2026-01-05