QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Opaleye Management Inc.'s Holding History (CIK: 0001595855)

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

Q4 2019

Shares 132,200 Value ($000) $3,124 Avg Close $22.82 Range $19.08 - $26.07

Q3 2019

Shares 185,000 Value ($000) $4,063 Avg Close $27.89 Range $21.17 - $35.69

Q1 2018

Shares 150,000 Value ($000) $2,556 Avg Close $20.04 Range $16.03 - $24.80

Q4 2017

Shares 65,000 Value ($000) $1,395 Avg Close $19.52 Range $15.56 - $23.70

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	132,200	$3,124	$22.82	$19.08 - $26.07
Q3 2019	185,000	$4,063	$27.89	$21.17 - $35.69
Q1 2018	150,000	$2,556	$20.04	$16.03 - $24.80
Q4 2017	65,000	$1,395	$19.52	$15.56 - $23.70