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Prothena Corporation plc Ordinary Shares

Prothena Announces Leadership Team Updates

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Prothena Partners Present Data Supporting Next Generation Treatments for Parkinson’s and Alzheimer’s Disease at AD/PD™ 2026

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Prothena Announces Achievement of $50 Million Clinical Milestone Payment from Novo Nordisk Related to Ongoing Phase 3 Clinical Trial for Coramitug (Formerly PRX004) in ATTR Amyloidosis with Cardiomyopathy

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Prothena Announces Achievement of $50 Million Clinical Milestone Payment from Novo Nordisk Related to Ongoing Phase 3 Clinical Trial for Coramitug (Formerly PRX004) in ATTR Amyloidosis with Cardiomyopathy

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Form 8-K

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Prothena Announces up to $100 Million Share Repurchase Plan

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Prothena Announces up to $100 Million Share Repurchase Plan

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Prothena Announces up to $100 Million Share Repurchase Plan

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Form 8-K

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Prothena Reports Fourth Quarter and Full Year 2025 Financial Results, and Provides Financial Guidance and Business Highlights

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