QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Squarepoint Ops LLC's Holding History (CIK: 0001642575)

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

Q3 2025

Shares 613,475 Value ($000) $865 Avg Close $1.45 Range $0.95 - $2.18

Q4 2023

Shares 17,515 Value ($000) $35 Avg Close $1.52 Range $1.12 - $2.31

Q4 2022

Shares 96,442 Value ($000) $176 Avg Close $2.58 Range $1.72 - $3.61

Q1 2022

Shares 95,080 Value ($000) $445 Avg Close $4.87 Range $3.72 - $8.30

Q4 2021

Shares 20,572 Value ($000) $162 Avg Close $7.53 Range $5.33 - $9.10

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	613,475	$865	$1.45	$0.95 - $2.18
Q4 2023	17,515	$35	$1.52	$1.12 - $2.31
Q4 2022	96,442	$176	$2.58	$1.72 - $3.61
Q1 2022	95,080	$445	$4.87	$3.72 - $8.30
Q4 2021	20,572	$162	$7.53	$5.33 - $9.10