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Annual Report · 10-K

PROTHENA CORP PUBLIC LTD CO

PRTANASDAQEQUITYCurrent

Annual Report

Filed Feb 27, 2026Accepted Feb 27, 2026, 4:04 PM ESTCIK 1559053Accession 0001559053-26-000008
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Company context

Prothena Corporation plc is a late-stage clinical biotechnology company with expertise in protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating neurodegenerative and rare peripheral amyloid diseases. Fueled by its deep scientific expertise built over decades of research, Prothena is advancing a pipeline of therapeutic candidates for a number of indications and novel targets for which its ability to integrate scientific insights around neurological dysfunction and the biology of misfolded proteins can be leveraged. Prothena’s pipeline includes both wholly-owned and partnered programs being developed for the potential treatment of diseases including ATTR amyloidosis with cardiomyopathy, Alzheimer’s disease, Parkinson’s disease and a number of other neurodegenerative diseases. For more information, please visit the Company’s website at www.prothena.com and follow the Company on X (formerly Twitter) @ProthenaCorp.

Current securities

Recent company filings

  1. 4 filingSep 21, 2026
  2. 4 filingSep 3, 2026
  3. 4 filingAug 21, 2026
  4. 4 filingAug 11, 2026
  5. 4 filingAug 10, 2026

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