QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2025
Shares 96,486 Value ($000) $0 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 92,034 Value ($000) $0 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 120,506 Value ($000) $0 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 108,174 Value ($000) $0 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 109,114 Value ($000) $0 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 97,327 Value ($000) $0 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 59,727 Value ($000) $0 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 59,727 Value ($000) $0 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 53,782 Value ($000) $0 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 52,045 Value ($000) $0 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 47,381 Value ($000) $0 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 46,351 Value ($000) $0 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 46,351 Value ($000) $0 Avg Close $2.58 Range $1.72 - $3.61
Q3 2022
Shares 44,313 Value ($000) $122 Avg Close $3.20 Range $2.31 - $4.43
Q2 2022
Shares 38,714 Value ($000) $90 Avg Close $3.83 Range $2.22 - $4.97
Q1 2022
Shares 1,209,736 Value ($000) $5,662 Avg Close $4.87 Range $3.72 - $8.30
Q4 2021
Shares 2,359,250 Value ($000) $18,567 Avg Close $7.53 Range $5.33 - $9.10
Q3 2021
Shares 2,194,600 Value ($000) $18,303 Avg Close $9.85 Range $7.43 - $14.17
Q2 2021
Shares 2,194,600 Value ($000) $25,618 Avg Close $10.48 Range $7.85 - $13.23