---
schema_version: "secwatch.filing_event.v1"
accession: "0001559053-25-000047"
form_type: "8-K"
ticker: "PRTA"
cik: "0001559053"
company_name: "PROTHENA CORP PUBLIC LTD CO"
filed_at: "2025-11-19T23:59:59+00:00"
generated_at: "2026-05-16T18:26:04.677590+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Prothena shareholders approve capital reduction to create distributable reserves

## Summary
- 37.8M votes for, 46.7K against, 45.9K abstained at extraordinary general meeting on Nov 19, 2025.
- Reduction of capital creates distributable reserves for potential future dividends or buybacks.
- Meeting was held virtually; proposal described in proxy statement filed Oct 7, 2025.

## SEC filing metadata
- accession: 0001559053-25-000047
- form_type: 8-K
- ticker: PRTA
- cik: 0001559053
- company_name: PROTHENA CORP PUBLIC LTD CO
- filed_at: 2025-11-19T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1559053/000155905325000047/0001559053-25-000047-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1559053/000155905325000047/prta-20251119.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001559053-25-000047
- JSON: https://secwatch.observer/filing/0001559053-25-000047.json
- Plain text: https://secwatch.observer/filing/0001559053-25-000047.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.