QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

MERCER GLOBAL ADVISORS INC /ADV's Holding History (CIK: 0000853758)

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

Q3 2025

Shares 26,989 Value ($000) $38 Avg Close $1.45 Range $0.95 - $2.18

Q2 2025

Shares 25,260 Value ($000) $50 Avg Close $1.48 Range $1.02 - $2.15

Q1 2025

Shares 27,113 Value ($000) $33 Avg Close $1.92 Range $1.12 - $5.77

Q4 2024

Shares 30,959 Value ($000) $84 Avg Close $1.17 Range $0.61 - $4.14

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	26,989	$38	$1.45	$0.95 - $2.18
Q2 2025	25,260	$50	$1.48	$1.02 - $2.15
Q1 2025	27,113	$33	$1.92	$1.12 - $5.77
Q4 2024	30,959	$84	$1.17	$0.61 - $4.14