QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

LOS ANGELES CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001177206)

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

Q4 2025

Shares 34,978 Value ($000) $175 Avg Close $6.21 Range $4.50 - $7.88

Q2 2024

Shares 16,941 Value ($000) $224 Avg Close $16.71 Range $11.83 - $23.86

Q1 2024

Shares 20,191 Value ($000) $476 Avg Close $24.77 Range $21.53 - $29.70

Q4 2023

Shares 10,427 Value ($000) $285 Avg Close $23.54 Range $19.35 - $28.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	34,978	$175	$6.21	$4.50 - $7.88
Q2 2024	16,941	$224	$16.71	$11.83 - $23.86
Q1 2024	20,191	$476	$24.77	$21.53 - $29.70
Q4 2023	10,427	$285	$23.54	$19.35 - $28.78