QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Fortitude Family Office, LLC's Holding History (CIK: 0001950506)

Note: Option positions (PUT/CALL) are excluded.

Q3 2025

Shares 270 Value ($000) $1 Avg Close $5.32 Range $4.15 - $7.09

Q2 2025

Shares 270 Value ($000) $2 Avg Close $5.57 Range $4.05 - $7.03

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	270	$1	$5.32	$4.15 - $7.09
Q2 2025	270	$2	$5.57	$4.05 - $7.03