PRTA News and Press, Prothena Corporation plc From 06/18/25

2025-06-18 16:19:40 ET More on Prothena Roche And Prothena: Why Moving On Makes Sense Prothena: Despite Phase 3 Trial Failure, Other Neurodegenerative Programs In Place Prothena jumps as partner Roche to advance Parkinson's drug into late-stage studies Read...

Prothena Corporation plc (NASDAQ:PRTA) today announced that the Company has initiated an approximate 63% reduction in its workforce to substantially reduce its operating costs to those necessary to support its remaining wholly owned programs, its obligations to partnered programs, and its anticip...

2025-06-17 10:09:48 ET ... Read the full article on Seeking Alpha For further details see: Roche And Prothena: Why Moving On Makes Sense

2025-06-16 08:56:46 ET More on Prothena, Roche Prothena: Despite Phase 3 Trial Failure, Other Neurodegenerative Programs In Place Roche: Key Products Stall, Obesity Pipeline Takes Shape Roche Holding AG (RHHBY) Q1 2025 Sales/ Trading Statement Call Transcript ...

Data from Phase IIb PADOVA study and longer term follow-up data suggest clinical benefit on top of symptomatic treatment in early-stage Parkinson’s disease Prasinezumab is a potential first-in-class anti-alpha-synuclein antibody, targeting a known biological driver of Parkinson’...

2025-05-27 15:47:57 ET Summary Prothena Corporation plc's phase 3 AFFIRM-AL trial for birtamimab in AL amyloidosis failed, leading to program termination and workforce reduction. Despite Phase 3 AL Amyloidosis trial failure, I maintain a Hold rating due to Prothena's robust pipeli...

2025-05-27 12:04:22 ET More on Prothena Prothena Corporation: Multiple Failures Make It Risky Biggest stock movers Tuesday: INFA, PDD, TSLA, and more Prothena to evaluate options after phase 3 birtamimab failure; shares plunge Seeking Alpha’s Quant Rat...

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