---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-027049"
form_type: "8-K"
ticker: "ZURA"
cik: "0001855644"
company_name: "Zura Bio Ltd"
filed_at: "2024-02-23T23:59:59+00:00"
generated_at: "2026-06-05T17:30:19.040879+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Zura Bio engages Withum as new auditor; discloses material weakness in internal controls

## Summary
- Engaged WithumSmith+Brown as independent auditor for FY 2023, replacing Marcum LLP.
- Marcum's report on Dec 31, 2022 financials contained no adverse opinion or qualification.
- Management identified a material weakness related to accounting for complex financial instruments and IPO proceeds.
- No disagreements with Marcum on accounting principles or audit scope during the period.
- Marcum provided a letter agreeing with the disclosures, filed as Exhibit 16.1.

## SEC filing metadata
- accession: 0001104659-24-027049
- form_type: 8-K
- ticker: ZURA
- cik: 0001855644
- company_name: Zura Bio Ltd
- filed_at: 2024-02-23T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1855644/000110465924027049/0001104659-24-027049-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1855644/000110465924027049/tm242343d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-027049
- JSON: https://secwatch.observer/filing/0001104659-24-027049.json
- Plain text: https://secwatch.observer/filing/0001104659-24-027049.txt

## Key facts
- Auditor Changes
  Zura Bio Ltd dismissed Marcum LLP as its auditor.
  - Action: dismissal
  - Auditor: Marcum LLP
  - Successor: WithumSmith+Brown, PC
  source text: Marcum LLP (" Marcum "), the Company’s independent registered public accounting firm prior to the Business Combination, was terminated as of such date
  evidence_url: https://www.sec.gov/Archives/edgar/data/1855644/000110465924027049/0001104659-24-027049-index.htm
- Auditor Changes
  Zura Bio Ltd engaged WithumSmith+Brown, PC as its auditor.
  - Action: engagement
  - Auditor: WithumSmith+Brown, PC
  source text: On March 29, 2023, Zura Bio Limited (the " Company ") engaged WithumSmith+Brown, PC (" Withum ") as the Company’s independent registered public accounting firm
  evidence_url: https://www.sec.gov/Archives/edgar/data/1855644/000110465924027049/0001104659-24-027049-index.htm

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