PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

MOGY JOEL R INVESTMENT COUNSEL INC's Holding History (CIK: 0001126735)

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

Q4 2025

Shares 20,750 Value ($000) $198 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 20,750 Value ($000) $203 Avg Close $7.69 Range $5.96 - $9.85

Q2 2025

Shares 20,750 Value ($000) $126 Avg Close $7.50 Range $4.32 - $12.45

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	20,750	$198	$10.18	$9.07 - $11.69
Q3 2025	20,750	$203	$7.69	$5.96 - $9.85
Q2 2025	20,750	$126	$7.50	$4.32 - $12.45