QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q4 2025
Shares 1,384,181 Value ($000) $1,523 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 515,852 Value ($000) $727 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 564,442 Value ($000) $1,106 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 816,975 Value ($000) $980 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 152,683 Value ($000) $412 Avg Close $1.17 Range $0.61 - $4.14
Q2 2024
Shares 89,261 Value ($000) $94 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 132,556 Value ($000) $261 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 75,891 Value ($000) $153 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 82,791 Value ($000) $137 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 37,091 Value ($000) $66 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 43,028 Value ($000) $76 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 46,200 Value ($000) $85 Avg Close $2.58 Range $1.72 - $3.61