QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Sterling Capital Management LLC's Holding History (CIK: 0001329883)

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

Q4 2025

Shares 2,323 Value ($000) $15 Avg Close $6.21 Range $4.50 - $7.88

Q3 2025

Shares 2,579 Value ($000) $14 Avg Close $5.32 Range $4.15 - $7.09

Q2 2025

Shares 874 Value ($000) $6 Avg Close $5.57 Range $4.05 - $7.03

Q1 2025

Shares 539 Value ($000) $4 Avg Close $8.34 Range $6.16 - $12.41

Q4 2024

Shares 996 Value ($000) $11 Avg Close $12.16 Range $9.87 - $15.67

Q3 2024

Shares 114 Value ($000) $1 Avg Close $13.36 Range $10.50 - $16.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,323	$15	$6.21	$4.50 - $7.88
Q3 2025	2,579	$14	$5.32	$4.15 - $7.09
Q2 2025	874	$6	$5.57	$4.05 - $7.03
Q1 2025	539	$4	$8.34	$6.16 - $12.41
Q4 2024	996	$11	$12.16	$9.87 - $15.67
Q3 2024	114	$1	$13.36	$10.50 - $16.74