---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-169367"
form_type: "8-K"
ticker: "PRTA"
cik: "0001559053"
company_name: "PROTHENA CORP PUBLIC LTD CO"
filed_at: "2025-07-30T23:59:59+00:00"
generated_at: "2026-05-17T23:01:24.642869+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Prothena Biosciences enters employment agreements with CFO, COO, CSO; base salaries set at $518K-$604K

## Summary
- CFO Tran Nguyen base $603,792 (50% bonus target); COO Brandon Smith $544,201 (50%); CSO Wagner Zago $518,000 (40%).
- Severance without cause or for good reason: 100% base salary, 100% target bonus, up to 12 months COBRA.
- Change-in-control severance: 150% base, 150% target bonus, up to 18 months COBRA plus equity acceleration.
- Agreements memorialize benefits consistent with existing severance plan; no change in roles or compensation levels.

## SEC filing metadata
- accession: 0001193125-25-169367
- form_type: 8-K
- ticker: PRTA
- cik: 0001559053
- company_name: PROTHENA CORP PUBLIC LTD CO
- filed_at: 2025-07-30T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1559053/000119312525169367/0001193125-25-169367-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1559053/000119312525169367/d28458d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-169367
- JSON: https://secwatch.observer/filing/0001193125-25-169367.json
- Plain text: https://secwatch.observer/filing/0001193125-25-169367.txt

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