QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

COUNTRY TRUST BANK's Holding History (CIK: 0001209324)

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

Q3 2023

Shares 42 Value ($000) $1 Avg Close $24.75 Range $20.57 - $28.77

Q2 2023

Shares 42 Value ($000) $1 Avg Close $17.82 Range $10.64 - $24.14

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	42	$1	$24.75	$20.57 - $28.77
Q2 2023	42	$1	$17.82	$10.64 - $24.14