QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Quadrature Capital Ltd's Holding History (CIK: 0001651424)

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

Q4 2025

Shares 21,707 Value ($000) $138 Avg Close $6.21 Range $4.50 - $7.88

Q2 2024

Shares 14,012 Value ($000) $185 Avg Close $16.71 Range $11.83 - $23.86

Q1 2023

Shares 12,335 Value ($000) $139 Avg Close $12.78 Range $10.02 - $15.63

Q2 2022

Shares 11,471 Value ($000) $186 Avg Close $20.56 Range $14.58 - $31.33

Q4 2020

Shares 10,644 Value ($000) $496 Avg Close $43.65 Range $33.55 - $52.75

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	21,707	$138	$6.21	$4.50 - $7.88
Q2 2024	14,012	$185	$16.71	$11.83 - $23.86
Q1 2023	12,335	$139	$12.78	$10.02 - $15.63
Q2 2022	11,471	$186	$20.56	$14.58 - $31.33
Q4 2020	10,644	$496	$43.65	$33.55 - $52.75