---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-043201"
form_type: "8-K"
ticker: "ZURA"
cik: "0001855644"
company_name: "Zura Bio Ltd"
filed_at: "2023-04-07T23:59:59+00:00"
generated_at: "2026-06-17T04:45:19.049685+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# President and COO Preston Klassen resigns; CMO Chris Cabell assumes duties

## Summary
- Preston Klassen resigns as President and COO effective April 11, 2023.
- CMO Chris Cabell will take over Klassen's duties.
- Separation agreement accelerates 59,594 stock options; shares subject to 18-month lockup.
- Klassen receives no additional severance beyond option vesting and net cashless exercise.
- No cause for departure stated; agreement includes standard release and non-disparagement.

## SEC filing metadata
- accession: 0001104659-23-043201
- form_type: 8-K
- ticker: ZURA
- cik: 0001855644
- company_name: Zura Bio Ltd
- filed_at: 2023-04-07T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1855644/000110465923043201/0001104659-23-043201-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1855644/000110465923043201/tm2312086d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-043201
- JSON: https://secwatch.observer/filing/0001104659-23-043201.json
- Plain text: https://secwatch.observer/filing/0001104659-23-043201.txt

## Key facts
- Executive change
  Chris Cabell changed role as Chief Medical Officer and Executive Vice President at Zura Bio Ltd.
  - Action: taking on duties of President and Chief Operating Officer
  - Role: Chief Medical Officer and Executive Vice President
  source text: Chris Cabell, the Company’s Chief Medical Officer and Executive Vice President, will be taking on Dr. Klassen’s duties going forward.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1855644/000110465923043201/0001104659-23-043201-index.htm
- Executive change
  Preston Klassen resigned as President and Chief Operating Officer at Zura Bio Ltd.
  - Action: resigned
  - Role: President and Chief Operating Officer
  source text: On April 6, 2023, Preston Klassen notified Zura Bio Limited (the “Company”) that he intended to resign as the Company’s President and Chief Operating Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1855644/000110465923043201/0001104659-23-043201-index.htm

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