---
schema_version: "secwatch.filing_event.v1"
accession: "0001730463-26-000049"
form_type: "8-K"
ticker: "AUTL"
cik: "0001730463"
company_name: "Autolus Therapeutics plc"
filed_at: "2026-04-16T23:59:59+00:00"
generated_at: "2026-05-15T05:49:08.252013+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Autolus Therapeutics dismisses EY UK and appoints EY US as independent auditor

## Summary
- Audit committee dismissed EY UK on April 14, 2026; no disagreements or reportable events in prior two fiscal years.
- Audit committee appointed EY US as new independent auditor for FY 2026, effective immediately.
- EY UK's audit reports for 2024 and 2025 were unqualified; prior material weakness in internal controls disclosed in Q1 2024 10-Q.

## SEC filing metadata
- accession: 0001730463-26-000049
- form_type: 8-K
- ticker: AUTL
- cik: 0001730463
- company_name: Autolus Therapeutics plc
- filed_at: 2026-04-16T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1730463/000173046326000049/0001730463-26-000049-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1730463/000173046326000049/autl-20260414.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001730463-26-000049
- JSON: https://secwatch.observer/filing/0001730463-26-000049.json
- Plain text: https://secwatch.observer/filing/0001730463-26-000049.txt

## Key facts
- Auditor Changes
  Autolus Therapeutics plc engaged Ernst & Young LLP (US) as its auditor.
  - Action: engagement
  - Auditor: Ernst & Young LLP (US)
  source text: On April 14, 2026, the Audit Committee approved the engagement of Ernst & Young LLP (US) (“EY US”) as its new independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1730463/000173046326000049/0001730463-26-000049-index.htm
- Auditor Changes
  Autolus Therapeutics plc dismissed Ernst & Young LLP (UK) as its auditor.
  - Action: dismissal
  - Auditor: Ernst & Young LLP (UK)
  - Successor: Ernst & Young LLP (US)
  source text: (a) Dismissal of Independent Registered Public Accounting Firm. On April 14, 2026, the Audit Committee of the Board of Directors (the “Audit Committee”) of Autolus Therapeutics plc (the “Company”) dismissed Ernst & Young LLP (UK) (“EY UK”) as the Company’s independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1730463/000173046326000049/0001730463-26-000049-index.htm

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