---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-041204"
form_type: "8-K"
ticker: null
cik: "0001794621"
company_name: "Quanergy Systems, Inc."
filed_at: "2023-02-16T23:59:59+00:00"
generated_at: "2026-06-19T09:40:25.172052+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Quanergy auditor Grant Thornton resigns; going-concern doubt noted

## Summary
- Grant Thornton resigned as independent auditor on February 10, 2023.
- No disagreements or reportable events between company and GT during their tenure.
- GT's 2021 audit report included an explanatory paragraph on substantial doubt about going concern.
- Company provided disclosures to GT; GT agreed in letter filed as Exhibit 16.1.

## SEC filing metadata
- accession: 0001193125-23-041204
- form_type: 8-K
- cik: 0001794621
- company_name: Quanergy Systems, Inc.
- filed_at: 2023-02-16T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1794621/000119312523041204/0001193125-23-041204-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1794621/000119312523041204/d454354d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-041204
- JSON: https://secwatch.observer/filing/0001193125-23-041204.json
- Plain text: https://secwatch.observer/filing/0001193125-23-041204.txt

## Key facts
- Auditor Changes
  Grant Thornton LLP resigned as auditor of Quanergy Systems, Inc..
  - Action: resignation
  - Auditor: Grant Thornton LLP
  source text: On February 10, 2023, Grant Thornton LLP (“GT”) resigned as the Company’s Independent Registered Public Accounting Firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1794621/000119312523041204/0001193125-23-041204-index.htm

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