PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

QUADRANT CAPITAL GROUP LLC's Holding History (CIK: 0001650717)

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

Q4 2025
Shares 1,260 Value ($000) $12 Avg Close $10.18 Range $9.07 - $11.69
Q3 2025
Shares 1,260 Value ($000) $12 Avg Close $7.69 Range $5.96 - $9.85
Q4 2024
Shares 158 Value ($000) $2 Avg Close $15.77 Range $11.70 - $18.88
Q3 2024
Shares 1,383 Value ($000) $23 Avg Close $21.50 Range $15.52 - $25.42
Q2 2024
Shares 386 Value ($000) $8 Avg Close $21.64 Range $18.69 - $26.36
Q1 2024
Shares 960 Value ($000) $24 Avg Close $29.75 Range $24.25 - $41.55
Q4 2023
Shares 19 Value ($000) $1 Avg Close $38.49 Range $28.51 - $55.89
Q3 2023
Shares 19 Value ($000) $1 Avg Close $59.41 Range $45.22 - $73.14
Q2 2023
Shares 19 Value ($000) $1 Avg Close $64.50 Range $47.45 - $79.65
Q1 2023
Shares 19 Value ($000) $1 Avg Close $52.83 Range $45.06 - $60.82
Q4 2022
Shares 19 Value ($000) $1 Avg Close $58.56 Range $50.89 - $66.47
Q3 2022
Shares 19 Value ($000) $1 Avg Close $31.61 Range $25.02 - $64.00
Q3 2020
Shares 105 Value ($000) $1 Avg Close $12.03 Range $9.67 - $13.78
Q2 2020
Shares 105 Value ($000) $1 Avg Close $11.11 Range $9.25 - $12.98
Q1 2020
Shares 105 Value ($000) $1 Avg Close $12.11 Range $7.10 - $16.05
Q4 2019
Shares 105 Value ($000) $1 Avg Close $10.72 Range $7.40 - $17.63
Q1 2019
Shares 105 Value ($000) $1 Avg Close $12.49 Range $9.97 - $14.77
Q4 2015
Shares 84 Value ($000) $5 Avg Close $60.32 Range $40.47 - $76.42