QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

HM PAYSON & CO's Holding History (CIK: 0000928052)

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

Q4 2021

Shares 378 Value ($000) $16 Avg Close $46.70 Range $35.02 - $60.92

Q1 2021

Shares 1,054 Value ($000) $62 Avg Close $67.60 Range $42.92 - $92.57

Q4 2020

Shares 1,054 Value ($000) $49 Avg Close $43.65 Range $33.55 - $52.75

Q3 2020

Shares 1,301 Value ($000) $44 Avg Close $32.20 Range $26.01 - $37.77

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	378	$16	$46.70	$35.02 - $60.92
Q1 2021	1,054	$62	$67.60	$42.92 - $92.57
Q4 2020	1,054	$49	$43.65	$33.55 - $52.75
Q3 2020	1,301	$44	$32.20	$26.01 - $37.77