---
schema_version: "secwatch.filing_event.v1"
accession: "0000709283-25-000029"
form_type: "8-K"
ticker: "QMCO"
cik: "0000709283"
company_name: "QUANTUM CORP /DE/"
filed_at: "2025-08-26T23:59:59+00:00"
generated_at: "2026-05-17T10:05:52.039928+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Quantum receives Nasdaq delisting notice for late 10-Q filing; deadline Sept 15

## Summary
- Notice received Aug 21, 2025 for failure to timely file Q1 FY2026 10-Q.
- Must file 10-Q or submit compliance plan to Nasdaq by Sept 15, 2025.
- Company concurrently filed FY2025 10-K; includes revenue contract accounting review.
- Stock continues trading on Nasdaq; no immediate listing impact.
- Delay due to additional time needed for financial statement review by auditor.

## SEC filing metadata
- accession: 0000709283-25-000029
- form_type: 8-K
- ticker: QMCO
- cik: 0000709283
- company_name: QUANTUM CORP /DE/
- filed_at: 2025-08-26T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 3.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/709283/000070928325000029/0000709283-25-000029-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/709283/000070928325000029/qtm-20250821.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000709283-25-000029
- JSON: https://secwatch.observer/filing/0000709283-25-000029.json
- Plain text: https://secwatch.observer/filing/0000709283-25-000029.txt

## Key facts
- Listing & Compliance Notices
  QUANTUM CORP /DE/ received a nasdaq deficiency notice notice regarding late filing (rules 5250(c)(1)).
  - Exchange: nasdaq
  - Notice: deficiency notice
  - Deficiency: late filing
  - Rules: 5250(c)(1)
  source text: August 21, 2025, Quantum Corporation (the “Company”) received a written notice (the “Notice”) from the Listing Qualifications staff of the Nasdaq Stock Market LLC (“Nasdaq”) stating that the Company is not in compliance with Nasdaq Listing Rule 5250(c)(1) as a result of the Company’s failure to timely file its Quarterly Report on Form 10-Q for the fiscal quarter ended June 30, 2025 (the “Quarterly Report”) with the Securities and Exchange Commission (the “SEC”). On August 15, 2025, the Company filed a Notification of Late Filing on Form 12b-25 with the SEC indicating that the Quarterly Report
  evidence_url: https://www.sec.gov/Archives/edgar/data/709283/000070928325000029/0000709283-25-000029-index.htm

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