QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Rockefeller Capital Management L.P.'s Holding History (CIK: 0001739439)

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

Q4 2025

Shares 1,513 Value ($000) $10 Avg Close $6.21 Range $4.50 - $7.88

Q3 2025

Shares 2,463 Value ($000) $13 Avg Close $5.32 Range $4.15 - $7.09

Q4 2022

Shares 5,447 Value ($000) $0 Avg Close $11.51 Range $8.19 - $14.55

Q3 2022

Shares 5,412 Value ($000) $59 Avg Close $12.71 Range $6.31 - $19.46

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,513	$10	$6.21	$4.50 - $7.88
Q3 2025	2,463	$13	$5.32	$4.15 - $7.09
Q4 2022	5,447	$0	$11.51	$8.19 - $14.55
Q3 2022	5,412	$59	$12.71	$6.31 - $19.46