QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

EAM Investors, LLC's Holding History (CIK: 0001510989)

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

Q3 2023

Shares 97,677 Value ($000) $2,651 Avg Close $24.75 Range $20.57 - $28.77

Q2 2023

Shares 116,562 Value ($000) $2,628 Avg Close $17.82 Range $10.64 - $24.14

Q4 2020

Shares 42,999 Value ($000) $1,999 Avg Close $43.65 Range $33.55 - $52.75

Q3 2019

Shares 28,002 Value ($000) $615 Avg Close $27.89 Range $21.17 - $35.69

Q2 2019

Shares 40,527 Value ($000) $1,369 Avg Close $25.87 Range $19.54 - $36.15

Q1 2019

Shares 40,527 Value ($000) $1,047 Avg Close $22.33 Range $17.08 - $26.06

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	97,677	$2,651	$24.75	$20.57 - $28.77
Q2 2023	116,562	$2,628	$17.82	$10.64 - $24.14
Q4 2020	42,999	$1,999	$43.65	$33.55 - $52.75
Q3 2019	28,002	$615	$27.89	$21.17 - $35.69
Q2 2019	40,527	$1,369	$25.87	$19.54 - $36.15
Q1 2019	40,527	$1,047	$22.33	$17.08 - $26.06