---
schema_version: "secwatch.filing_event.v1"
accession: "0001823239-25-000099"
form_type: "8-K"
ticker: "MRVI"
cik: "0001823239"
company_name: "MARAVAI LIFESCIENCES HOLDINGS, INC."
filed_at: "2025-07-18T23:59:59+00:00"
generated_at: "2026-05-18T05:49:02.611089+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Maravai LifeSciences dismisses EY, appoints Deloitte; material weakness disclosed

## Summary
- EY dismissed as auditor; Deloitte appointed effective July 16, 2025 for FY 2025.
- EY's audit reports on financial statements for 2023 and 2024 were unqualified.
- EY's internal control report for 2024 contained an adverse opinion citing material weaknesses in revenue/AR and goodwill impairment.
- No disagreements on accounting principles or reportable events other than the internal control weakness.
- Company did not consult Deloitte before the appointment; EY letter filed as Exhibit 16.1.

## SEC filing metadata
- accession: 0001823239-25-000099
- form_type: 8-K
- ticker: MRVI
- cik: 0001823239
- company_name: MARAVAI LIFESCIENCES HOLDINGS, INC.
- filed_at: 2025-07-18T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1823239/000182323925000099/0001823239-25-000099-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1823239/000182323925000099/mrvi-20250716.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001823239-25-000099
- JSON: https://secwatch.observer/filing/0001823239-25-000099.json
- Plain text: https://secwatch.observer/filing/0001823239-25-000099.txt

## Key facts
- Auditor Changes
  MARAVAI LIFESCIENCES HOLDINGS, INC. engaged Deloitte & Touche LLP as its auditor.
  - Action: engagement
  - Auditor: Deloitte & Touche LLP
  source text: (the “ Company ”) approved the appointment of Deloitte & Touche LLP (“ Deloitte ”) as the independent registered public accounting firm for the Company for the fiscal year ending December 31, 2025, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823239/000182323925000099/0001823239-25-000099-index.htm
- Auditor Changes
  MARAVAI LIFESCIENCES HOLDINGS, INC. dismissed Ernst & Young LLP as its auditor.
  - Action: dismissal
  - Auditor: Ernst & Young LLP
  - Successor: Deloitte & Touche LLP
  source text: In addition, on the Approval Date, the Audit Committee approved the dismissal of Ernst & Young LLP (“ EY ”) as the Company’s independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823239/000182323925000099/0001823239-25-000099-index.htm

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