QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Pathstone Holdings, LLC's Holding History (CIK: 0002011612)

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

Q3 2025
Shares 183,934 Value ($000) $259 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 198,798 Value ($000) $390 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 214,309 Value ($000) $257 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 128,584 Value ($000) $347 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 143,793 Value ($000) $127 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 115,256 Value ($000) $121 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 115,447 Value ($000) $227 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 115,742 Value ($000) $233 Avg Close $1.52 Range $1.12 - $2.31