---
schema_version: "secwatch.filing_event.v1"
accession: "0000709283-23-000030"
form_type: "8-K"
ticker: "QMCO"
cik: "0000709283"
company_name: "QUANTUM CORP /DE/"
filed_at: "2023-08-21T23:59:59+00:00"
generated_at: "2026-06-11T06:36:25.928886+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Quantum appoints Grant Thornton as auditor; Armanino resigns over policy change

## Summary
- Audit Committee appointed Grant Thornton LLP as independent auditor for FY ending Mar 31, 2024, effective Aug 18, 2023.
- Armanino LLP resigned as auditor effective Aug 18, 2023, due to its decision to cease providing services to public companies.
- No disagreements or reportable events occurred during fiscal years 2022, 2023, or subsequent interim period through Aug 18, 2023.

## SEC filing metadata
- accession: 0000709283-23-000030
- form_type: 8-K
- ticker: QMCO
- cik: 0000709283
- company_name: QUANTUM CORP /DE/
- filed_at: 2023-08-21T23:59:59+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/709283/000070928323000030/0000709283-23-000030-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/709283/000070928323000030/qtm-20230821.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000709283-23-000030
- JSON: https://secwatch.observer/filing/0000709283-23-000030.json
- Plain text: https://secwatch.observer/filing/0000709283-23-000030.txt

## Key facts
- Auditor Changes
  QUANTUM CORP /DE/ engaged Grant Thornton LLP as its auditor.
  - Action: engagement
  - Auditor: Grant Thornton LLP
  source text: the Audit Committee of the Board of Directors of Quantum Corporation (the “Company”) appointed Grant Thornton LLP (“Grant Thornton”) as the Company’s independent registered public accounting firm for the fiscal year ending March 31, 2024, effective immediately
  evidence_url: https://www.sec.gov/Archives/edgar/data/709283/000070928323000030/0000709283-23-000030-index.htm

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