QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Caitong International Asset Management Co., Ltd's Holding History (CIK: 0001963355)

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

Q4 2025

Shares 37,964 Value ($000) $42 Avg Close $1.63 Range $1.07 - $3.10

Q3 2025

Shares 59,774 Value ($000) $84 Avg Close $1.45 Range $0.95 - $2.18

Q4 2024

Shares 1,228 Value ($000) $3 Avg Close $1.17 Range $0.61 - $4.14

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	37,964	$42	$1.63	$1.07 - $3.10
Q3 2025	59,774	$84	$1.45	$0.95 - $2.18
Q4 2024	1,228	$3	$1.17	$0.61 - $4.14