PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Atom Investors LP's Holding History (CIK: 0001738902)

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

Q4 2025

Shares 17,026 Value ($000) $163 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 21,315 Value ($000) $208 Avg Close $7.69 Range $5.96 - $9.85

Q1 2024

Shares 9,303 Value ($000) $230 Avg Close $29.75 Range $24.25 - $41.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	17,026	$163	$10.18	$9.07 - $11.69
Q3 2025	21,315	$208	$7.69	$5.96 - $9.85
Q1 2024	9,303	$230	$29.75	$24.25 - $41.55