QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Russell Investments Group, Ltd.'s Holding History (CIK: 0001692234)

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

Q4 2025
Shares 26,893 Value ($000) $30 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 32,006 Value ($000) $45 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 29,901 Value ($000) $59 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 38,257 Value ($000) $46 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 9,053 Value ($000) $24 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 793 Value ($000) $1 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 3,234 Value ($000) $3 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 143 Value ($000) $0 Avg Close $1.75 Range $1.38 - $2.43
Q3 2023
Shares 311 Value ($000) $1 Avg Close $2.41 Range $1.57 - $3.90