QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Jefferies Financial Group Inc.'s Holding History (CIK: 0000096223)

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

Q2 2025

Shares 20,000 Value ($000) $39 Avg Close $1.48 Range $1.02 - $2.15

Q1 2025

Shares 83,031 Value ($000) $100 Avg Close $1.92 Range $1.12 - $5.77

Q3 2024

Shares 10,941 Value ($000) $10 Avg Close $0.97 Range $0.79 - $1.26

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	20,000	$39	$1.48	$1.02 - $2.15
Q1 2025	83,031	$100	$1.92	$1.12 - $5.77
Q3 2024	10,941	$10	$0.97	$0.79 - $1.26