QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Granite Investment Partners, LLC's Holding History (CIK: 0001542266)

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

Q4 2018

Shares 24,426 Value ($000) $448 Avg Close $17.94 Range $16.00 - $22.23

Q3 2018

Shares 16,178 Value ($000) $346 Avg Close $15.81 Range $13.00 - $22.61

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	24,426	$448	$17.94	$16.00 - $22.23
Q3 2018	16,178	$346	$15.81	$13.00 - $22.61