QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

AlphaQuest LLC's Holding History (CIK: 0001883897)

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

Q4 2025

Shares 336 Value ($000) $2 Avg Close $6.21 Range $4.50 - $7.88

Q3 2025

Shares 336 Value ($000) $2 Avg Close $5.32 Range $4.15 - $7.09

Q2 2025

Shares 336 Value ($000) $2 Avg Close $5.57 Range $4.05 - $7.03

Q1 2025

Shares 336 Value ($000) $2 Avg Close $8.34 Range $6.16 - $12.41

Q1 2024

Shares 4,620 Value ($000) $109 Avg Close $24.77 Range $21.53 - $29.70

Q4 2023

Shares 8,785 Value ($000) $240 Avg Close $23.54 Range $19.35 - $28.78

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	336	$2	$6.21	$4.50 - $7.88
Q3 2025	336	$2	$5.32	$4.15 - $7.09
Q2 2025	336	$2	$5.57	$4.05 - $7.03
Q1 2025	336	$2	$8.34	$6.16 - $12.41
Q1 2024	4,620	$109	$24.77	$21.53 - $29.70
Q4 2023	8,785	$240	$23.54	$19.35 - $28.78