QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

ROTHSCHILD INVESTMENT LLC's Holding History (CIK: 0000085338)

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

Q4 2025
Shares 13 Value ($000) $0 Avg Close $6.21 Range $4.50 - $7.88
Q2 2025
Shares 70 Value ($000) $0 Avg Close $5.57 Range $4.05 - $7.03
Q1 2025
Shares 210 Value ($000) $1 Avg Close $8.34 Range $6.16 - $12.41
Q4 2024
Shares 20 Value ($000) $0 Avg Close $12.16 Range $9.87 - $15.67
Q3 2024
Shares 30 Value ($000) $0 Avg Close $13.36 Range $10.50 - $16.74
Q2 2024
Shares 10 Value ($000) $0 Avg Close $16.71 Range $11.83 - $23.86
Q1 2024
Shares 5 Value ($000) $0 Avg Close $24.77 Range $21.53 - $29.70