QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q4 2025

Shares 121,525 Value ($000) $1 Avg Close $6.21 Range $4.50 - $7.88

Q3 2024

Shares 19,934 Value ($000) $0 Avg Close $13.36 Range $10.50 - $16.74

Q4 2023

Shares 8,908 Value ($000) $0 Avg Close $23.54 Range $19.35 - $28.78

Q2 2019

Shares 12,527 Value ($000) $423 Avg Close $25.87 Range $19.54 - $36.15

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	121,525	$1	$6.21	$4.50 - $7.88
Q3 2024	19,934	$0	$13.36	$10.50 - $16.74
Q4 2023	8,908	$0	$23.54	$19.35 - $28.78
Q2 2019	12,527	$423	$25.87	$19.54 - $36.15