QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

KINGDON CAPITAL MANAGEMENT, L.L.C.'s Holding History (CIK: 0001000097)

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

Q4 2024

Shares 200,000 Value ($000) $2,126 Avg Close $12.16 Range $9.87 - $15.67

Q3 2024

Shares 200,000 Value ($000) $2,592 Avg Close $13.36 Range $10.50 - $16.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2024	200,000	$2,126	$12.16	$9.87 - $15.67
Q3 2024	200,000	$2,592	$13.36	$10.50 - $16.74