Quantum Corp. Changes Independent Auditor

TL;DR

Quantum Corp just fired PwC and hired BDO as their new auditor.

AI Summary

Quantum Corporation announced on September 30, 2025, a change in its certifying accountant. The company has dismissed PricewaterhouseCoopers LLP and engaged BDO USA, LLP as its new independent registered public accounting firm. This change is effective as of September 30, 2025.

Why It Matters

A change in auditors can sometimes signal underlying issues or a desire for a fresh perspective on financial reporting.

Risk Assessment

Risk Level: medium — Changes in auditors can sometimes precede or coincide with financial irregularities or a change in strategic direction.

Key Players & Entities

• Quantum Corporation (company) — Registrant
• PricewaterhouseCoopers LLP (company) — Former Certifying Accountant
• BDO USA, LLP (company) — New Certifying Accountant
• September 30, 2025 (date) — Effective date of auditor change

FAQ

Key Financial Figures

• $0.01 — ange on which registered Common Stock, $0.01 par value per share QMCO Nasdaq Global

Filing Documents

• qtm-20250930.htm (8-K) — 34KB
• exhibit161.htm (EX-16.1) — 3KB
• qtm-20250930_g1.jpg (GRAPHIC) — 12KB
• 0000709283-25-000061.txt ( ) — 172KB
• qtm-20250930.xsd (EX-101.SCH) — 2KB
• qtm-20250930_lab.xml (EX-101.LAB) — 21KB
• qtm-20250930_pre.xml (EX-101.PRE) — 12KB
• qtm-20250930_htm.xml (XML) — 3KB

01 Changes in Registrant's Certifying Accountant

Item 4.01 Changes in Registrant's Certifying Accountant. Dismissal of Independent Registered Public Accounting Firm The Audit Committee (the "Audit Committee") of the Board of Directors of Quantum Corporation (the "Company") conducted a competitive process to determine the Company's independent registered public accounting firm for the fiscal year ending March 31, 2026. As a result of this process and following careful deliberation, on September 30, 2025 , the Audit Committee dismissed Grant Thornton LLP ("Grant Thornton") as the Company's independent registered public accounting firm, effective as of that same date. Grant Thornton's reports on the Company's consolidated financial statements as of and for the fiscal years ended March 31, 2025 and 2024 did not contain any adverse opinion or disclaimer of opinion and were not qualified or modified as to uncertainty, audit scope, or accounting principles, other than the explanatory paragraph regarding the Company's ability to continue as a going concern. During the Company's fiscal years ended March 31, 2025 and 2024 and the subsequent interim period through September 30, 2025, there were no "disagreements" (as defined in Item 304(a)(1)(iv) of Regulation S-K and related instructions thereto) between the Company and Grant Thornton on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of Grant Thornton, would have caused Grant Thornton to make reference to the subject matter of the disagreement in connection with its report. Additionally, during the fiscal years ended March 31, 2025 and 2024 and subsequent interim period through September 30, 2025, there have been no "reportable events" (as defined in Item 304(a)(1)(v) of Regulation S-K and related instructions thereto), except for material weaknesses in the Company's internal control over financial reporting related to controls environment, r

01 Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit No. Description 16.1 Letter from Grant Thornton LLP dated October 6, 2025. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Quantum Corporation (Registrant) October 6, 2025 /s/ Laura A. Nash (Date) Laura A. Nash Chief Accounting Officer

View Full Filing

View this 8-K filing on SEC EDGAR