QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC's Holding History (CIK: 0001638555)

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

Q3 2019

Shares 150,000 Value ($000) $3,294 Avg Close $27.89 Range $21.17 - $35.69

Q2 2019

Shares 251,976 Value ($000) $8,514 Avg Close $25.87 Range $19.54 - $36.15

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	150,000	$3,294	$27.89	$21.17 - $35.69
Q2 2019	251,976	$8,514	$25.87	$19.54 - $36.15