QUANTERIX CORP

Ticker: QTRX CUSIP: 74766Q101 Class: Common Stock

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

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

Q1 2024

Shares 16,794 Value ($000) $396 Avg Close $24.77 Range $21.53 - $29.70

Q4 2023

Shares 16,794 Value ($000) $459 Avg Close $23.54 Range $19.35 - $28.78

Q3 2023

Shares 29,200 Value ($000) $792 Avg Close $24.75 Range $20.57 - $28.77

Q2 2023

Shares 34,000 Value ($000) $767 Avg Close $17.82 Range $10.64 - $24.14

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2024	16,794	$396	$24.77	$21.53 - $29.70
Q4 2023	16,794	$459	$23.54	$19.35 - $28.78
Q3 2023	29,200	$792	$24.75	$20.57 - $28.77
Q2 2023	34,000	$767	$17.82	$10.64 - $24.14