---
schema_version: "secwatch.filing_event.v1"
accession: "0001436126-23-000016"
form_type: "8-K"
ticker: "MG"
cik: "0001436126"
company_name: "Mistras Group, Inc."
filed_at: "2023-04-03T23:59:59+00:00"
generated_at: "2026-06-17T06:54:26.870823+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Mistras Group dismisses KPMG, appoints PwC as auditor for FY 2023

## Summary
- On March 29, 2023, Mistras Group dismissed KPMG and engaged PwC as independent auditor for the year ending Dec 31, 2023.
- No adverse opinions or modifications in KPMG's audit reports on financial statements or internal controls for 2021 and 2022.
- No disagreements or reportable events occurred during 2021, 2022, or the interim period through March 29, 2023.
- Audit Committee approved the auditor change; KPMG letter confirming agreement is attached as Exhibit 16.1.

## SEC filing metadata
- accession: 0001436126-23-000016
- form_type: 8-K
- ticker: MG
- cik: 0001436126
- company_name: Mistras Group, Inc.
- filed_at: 2023-04-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1436126/000143612623000016/0001436126-23-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1436126/000143612623000016/auditorchange8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001436126-23-000016
- JSON: https://secwatch.observer/filing/0001436126-23-000016.json
- Plain text: https://secwatch.observer/filing/0001436126-23-000016.txt

## Key facts
- Auditor Changes
  Mistras Group, Inc. dismissed KPMG LLP as its auditor.
  - Action: dismissal
  - Auditor: KPMG LLP
  - Successor: PricewaterhouseCoopers LLP
  source text: On March 29, 2023, Mistras Group, Inc. (the “Company”) dismissed KPMG LLP (“KPMG”) as the Company’s independent registered public accounting firm and appointed PricewaterhouseCoopers LLP (“PwC”) as the Company’s independent registered public accounting firm
  evidence_url: https://www.sec.gov/Archives/edgar/data/1436126/000143612623000016/0001436126-23-000016-index.htm
- Auditor Changes
  Mistras Group, Inc. engaged PricewaterhouseCoopers LLP as its auditor.
  - Action: engagement
  - Auditor: PricewaterhouseCoopers LLP
  source text: On March 29, 2023, Mistras Group, Inc. (the “Company”) dismissed KPMG LLP (“KPMG”) as the Company’s independent registered public accounting firm and appointed PricewaterhouseCoopers LLP (“PwC”) as the Company’s independent registered public accounting firm
  evidence_url: https://www.sec.gov/Archives/edgar/data/1436126/000143612623000016/0001436126-23-000016-index.htm

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