PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

RBF Capital, LLC's Holding History (CIK: 0001134621)

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

Q4 2025

Shares 29,200 Value ($000) $279 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 29,200 Value ($000) $285 Avg Close $7.69 Range $5.96 - $9.85

Q2 2025

Shares 29,200 Value ($000) $177 Avg Close $7.50 Range $4.32 - $12.45

Q1 2025

Shares 29,200 Value ($000) $361 Avg Close $14.14 Range $11.78 - $16.66

Q4 2024

Shares 29,200 Value ($000) $404 Avg Close $15.77 Range $11.70 - $18.88

Q3 2024

Shares 45,362 Value ($000) $759 Avg Close $21.50 Range $15.52 - $25.42

Q2 2024

Shares 45,362 Value ($000) $936 Avg Close $21.64 Range $18.69 - $26.36

Q1 2024

Shares 45,362 Value ($000) $1,124 Avg Close $29.75 Range $24.25 - $41.55

Q4 2023

Shares 45,362 Value ($000) $1,648 Avg Close $38.49 Range $28.51 - $55.89

Q3 2023

Shares 54,362 Value ($000) $2,623 Avg Close $59.41 Range $45.22 - $73.14

Q2 2023

Shares 54,362 Value ($000) $3,712 Avg Close $64.50 Range $47.45 - $79.65

Q1 2023

Shares 54,362 Value ($000) $2,635 Avg Close $52.83 Range $45.06 - $60.82

Q4 2022

Shares 54,362 Value ($000) $3,275 Avg Close $58.56 Range $50.89 - $66.47

Q3 2022

Shares 54,362 Value ($000) $3,296 Avg Close $31.61 Range $25.02 - $64.00

Q2 2022

Shares 45,362 Value ($000) $1,659 Avg Close $29.25 Range $21.06 - $40.31

Q1 2022

Shares 45,362 Value ($000) $1,659 Avg Close $36.05 Range $29.53 - $49.77

Q4 2021

Shares 45,362 Value ($000) $2,241 Avg Close $55.45 Range $40.50 - $74.32

Q3 2021

Shares 45,362 Value ($000) $3,231 Avg Close $62.11 Range $45.09 - $79.75

Q2 2021

Shares 45,362 Value ($000) $2,332 Avg Close $31.20 Range $21.30 - $59.74

Q1 2021

Shares 45,362 Value ($000) $1,139 Avg Close $18.81 Range $10.72 - $28.66

Q4 2020

Shares 45,362 Value ($000) $545 Avg Close $11.83 Range $9.86 - $14.14

Q3 2020

Shares 45,362 Value ($000) $453 Avg Close $12.03 Range $9.67 - $13.78

Q2 2020

Shares 45,362 Value ($000) $474 Avg Close $11.11 Range $9.25 - $12.98

Q1 2020

Shares 45,362 Value ($000) $485 Avg Close $12.11 Range $7.10 - $16.05

Q4 2019

Shares 45,362 Value ($000) $718 Avg Close $10.72 Range $7.40 - $17.63

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	29,200	$279	$10.18	$9.07 - $11.69
Q3 2025	29,200	$285	$7.69	$5.96 - $9.85
Q2 2025	29,200	$177	$7.50	$4.32 - $12.45
Q1 2025	29,200	$361	$14.14	$11.78 - $16.66
Q4 2024	29,200	$404	$15.77	$11.70 - $18.88
Q3 2024	45,362	$759	$21.50	$15.52 - $25.42
Q2 2024	45,362	$936	$21.64	$18.69 - $26.36
Q1 2024	45,362	$1,124	$29.75	$24.25 - $41.55
Q4 2023	45,362	$1,648	$38.49	$28.51 - $55.89
Q3 2023	54,362	$2,623	$59.41	$45.22 - $73.14
Q2 2023	54,362	$3,712	$64.50	$47.45 - $79.65
Q1 2023	54,362	$2,635	$52.83	$45.06 - $60.82
Q4 2022	54,362	$3,275	$58.56	$50.89 - $66.47
Q3 2022	54,362	$3,296	$31.61	$25.02 - $64.00
Q2 2022	45,362	$1,659	$29.25	$21.06 - $40.31
Q1 2022	45,362	$1,659	$36.05	$29.53 - $49.77
Q4 2021	45,362	$2,241	$55.45	$40.50 - $74.32
Q3 2021	45,362	$3,231	$62.11	$45.09 - $79.75
Q2 2021	45,362	$2,332	$31.20	$21.30 - $59.74
Q1 2021	45,362	$1,139	$18.81	$10.72 - $28.66
Q4 2020	45,362	$545	$11.83	$9.86 - $14.14
Q3 2020	45,362	$453	$12.03	$9.67 - $13.78
Q2 2020	45,362	$474	$11.11	$9.25 - $12.98
Q1 2020	45,362	$485	$12.11	$7.10 - $16.05
Q4 2019	45,362	$718	$10.72	$7.40 - $17.63