---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-065547"
form_type: "8-K"
ticker: "QMCO"
cik: "0000709283"
company_name: "QUANTUM CORP /DE/"
filed_at: "2026-10-09T20:46:35+00:00"
generated_at: "2026-10-12T15:04:13.525458+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Quantum expects to meet or exceed prior guidance; CFO William H. White terminated, Hiral A. Patel named PFO

## Summary
- Quantum expects to meet or exceed previously issued guidance for the fiscal quarter ended Sept. 30, 2026, subject to completion of financial closing and auditor review.
- William H. White was terminated as CFO and Principal Financial Officer effective Oct. 9, 2026; Quantum expects no disruption to current operations.
- Hiral A. Patel, 38, was appointed Principal Financial Officer; she has been Chief Accounting Officer since Sept. 1, 2026, after roles at Pep Boys and IKEA Retail.
- On Oct. 9, 2026, the board appointed Yue Zhou White to the Audit Committee and Donald J. Jaworski to the Nominating Committee; James C. Clancy resigned those seats on Sept. 28.

## SEC filing metadata
- accession: 0001628280-26-065547
- form_type: 8-K
- ticker: QMCO
- cik: 0000709283
- company_name: QUANTUM CORP /DE/
- filed_at: 2026-10-09T20:46:35+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 5.02, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/0001628280-26-065547-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/qtm-20261009.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-065547
- JSON: https://secwatch.observer/filing/0001628280-26-065547.json
- Plain text: https://secwatch.observer/filing/0001628280-26-065547.txt

## Key facts
- Executive change
  Hiral A. Patel was appointed as Principal Financial Officer at QUANTUM CORP /DE/.
  - Action: appointed
  - Role: Principal Financial Officer
  source text: Effective on October 9, 2026, Hiral A. Patel, the Company’s current Chief Accounting Officer and Principal Accounting Officer, was appointed the Company’s Principal Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/0001628280-26-065547-index.htm
- Executive change
  William H. White was terminated as Chief Financial Officer and Principal Financial Officer at QUANTUM CORP /DE/.
  - Action: terminated
  - Role: Chief Financial Officer and Principal Financial Officer
  source text: On October 9, 2026, William H. White was terminated as Chief Financial Officer and Principal Financial Officer of Quantum Corporation (the “Company”) effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/0001628280-26-065547-index.htm

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