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Prothena Corp PLC

8.38
-0.4000-4.56%
Pre-market: 8.380.00000.00%08:24 EDT
Volume:634.78K
Turnover:5.40M
Market Cap:430.20M
PE:-10.05
High:8.99
Open:8.98
Low:8.37
Close:8.78
52wk High:11.80
52wk Low:7.73
Shares:51.34M
Float Shares:39.86M
Volume Ratio:1.35
T/O Rate:1.59%
Dividend:- -
Dividend Rate:- -
EPS(TTM):-0.8337
EPS(LYR):-4.5346
ROE:-14.39%
ROA:-10.67%
PB:1.50
PE(LYR):-1.85

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Aug 19, 2026

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
Aug 14, 2026

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
Aug 07, 2026

Quarterly Report

Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Aug 07, 2026

Major Issues Report

Form 8-K - Current report
Aug 06, 2026

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
Jul 30, 2026

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities
Jul 30, 2026

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities
Jul 30, 2026

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
Jun 09, 2026

Proposed Sale Of Securities

Form 144 - Report of proposed sale of securities
May 15, 2026

Major Issues Report

Form 8-K - Current report
May 15, 2026

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
May 11, 2026

Beneficial Ownership Change

Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
May 08, 2026

Quarterly Report

Form 10-Q - Quarterly report [Sections 13 or 15(d)]
May 07, 2026

Major Issues Report

Form 8-K - Current report
Feb 27, 2026

Major Issues Report

Form 8-K - Current report
Feb 27, 2026

Annual Report

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]
Feb 19, 2026

Major Issues Report

Form 8-K - Current report
Dec 12, 2025

Major Issues Report

Form 8-K - Current report
Nov 19, 2025

Major Issues Report

Form 8-K - Current report
Nov 06, 2025

Quarterly Report

Form 10-Q - Quarterly report [Sections 13 or 15(d)]