QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

State of Wyoming's Holding History (CIK: 0001821626)

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

Q4 2025

Shares 11,089 Value ($000) $12 Avg Close $1.63 Range $1.07 - $3.10

Q1 2023

Shares 45,863 Value ($000) $81 Avg Close $1.97 Range $1.54 - $2.63

Q4 2022

Shares 12,792 Value ($000) $23 Avg Close $2.58 Range $1.72 - $3.61

Q3 2021

Shares 332 Value ($000) $3 Avg Close $9.85 Range $7.43 - $14.17

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,089	$12	$1.63	$1.07 - $3.10
Q1 2023	45,863	$81	$1.97	$1.54 - $2.63
Q4 2022	12,792	$23	$2.58	$1.72 - $3.61
Q3 2021	332	$3	$9.85	$7.43 - $14.17