QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

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

Q4 2025
Shares 4,525,553 Value ($000) $28,783 Avg Close $6.21 Range $4.50 - $7.88
Q3 2025
Shares 4,259,851 Value ($000) $23,131 Avg Close $5.32 Range $4.15 - $7.09
Q2 2025
Shares 3,633,622 Value ($000) $24,164 Avg Close $5.57 Range $4.05 - $7.03
Q1 2025
Shares 2,963,397 Value ($000) $19,292 Avg Close $8.34 Range $6.16 - $12.41
Q4 2024
Shares 2,587,824 Value ($000) $27,509 Avg Close $12.16 Range $9.87 - $15.67
Q3 2024
Shares 2,520,686 Value ($000) $32,668 Avg Close $13.36 Range $10.50 - $16.74
Q2 2024
Shares 1,918,030 Value ($000) $25,337 Avg Close $16.71 Range $11.83 - $23.86
Q1 2024
Shares 1,162,829 Value ($000) $27,396 Avg Close $24.77 Range $21.53 - $29.70
Q4 2023
Shares 1,297,090 Value ($000) $35,462 Avg Close $23.54 Range $19.35 - $28.78
Q3 2023
Shares 1,675,838 Value ($000) $45,482 Avg Close $24.75 Range $20.57 - $28.77
Q2 2023
Shares 1,416,623 Value ($000) $31,945 Avg Close $17.82 Range $10.64 - $24.14
Q1 2023
Shares 769,739 Value ($000) $8,675 Avg Close $12.78 Range $10.02 - $15.63
Q4 2022
Shares 862,225 Value ($000) $11,942 Avg Close $11.51 Range $8.19 - $14.55
Q3 2022
Shares 758,853 Value ($000) $8,363 Avg Close $12.71 Range $6.31 - $19.46
Q2 2022
Shares 381,875 Value ($000) $6,183 Avg Close $20.56 Range $14.58 - $31.33
Q4 2020
Shares 38,957 Value ($000) $1,812 Avg Close $43.65 Range $33.55 - $52.75
Q3 2020
Shares 47,900 Value ($000) $1,616 Avg Close $32.20 Range $26.01 - $37.77
Q2 2020
Shares 148,719 Value ($000) $4,073 Avg Close $25.27 Range $17.12 - $28.99
Q1 2020
Shares 345,000 Value ($000) $6,338 Avg Close $22.82 Range $10.89 - $29.00
Q4 2019
Shares 371,337 Value ($000) $8,775 Avg Close $22.82 Range $19.08 - $26.07
Q3 2019
Shares 110,251 Value ($000) $2,421 Avg Close $27.89 Range $21.17 - $35.69
Q3 2018
Shares 226,891 Value ($000) $4,860 Avg Close $15.81 Range $13.00 - $22.61