QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

NATIONAL BANK OF CANADA /FI/'s Holding History (CIK: 0000926171)

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

Q4 2025

Shares 85 Value ($000) $1 Avg Close $6.21 Range $4.50 - $7.88

Q3 2024

Shares 33 Value ($000) $0 Avg Close $13.36 Range $10.50 - $16.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	85	$1	$6.21	$4.50 - $7.88
Q3 2024	33	$0	$13.36	$10.50 - $16.74