QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

RTW INVESTMENTS, LP's Holding History (CIK: 0001493215)

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

Q2 2022

Shares 1,819,120 Value ($000) $29,452 Avg Close $20.56 Range $14.58 - $31.33

Q1 2022

Shares 1,248,517 Value ($000) $36,444 Avg Close $30.56 Range $22.70 - $43.32

Q4 2021

Shares 686,470 Value ($000) $29,106 Avg Close $46.70 Range $35.02 - $60.92

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2022	1,819,120	$29,452	$20.56	$14.58 - $31.33
Q1 2022	1,248,517	$36,444	$30.56	$22.70 - $43.32
Q4 2021	686,470	$29,106	$46.70	$35.02 - $60.92