Extreme Networks Replaces Auditor, Appoints Deloitte as Independent Auditor

What Happened
Extreme Networks, Inc. announced on its Form 8-K that the Audit Committee dismissed Grant Thornton LLP as the company's independent registered public accounting firm and, effective August 21, 2026, appointed Deloitte & Touche LLP as the independent auditor for the fiscal year ending June 30, 2027 and related interim periods. Grant Thornton’s audit reports for the fiscal years ended June 30, 2026 and June 30, 2025 were unqualified (no adverse opinion, disclaimer, or qualification). The company reported no disagreements or reportable events with Grant Thornton for those years or through the August 21, 2026 effective date.

Key Details

• Effective date of change: August 21, 2026.
• New auditor: Deloitte & Touche LLP appointed for fiscal year ending June 30, 2027 and interim periods.
• Prior auditor: Grant Thornton LLP’s reports for FY 2026 and FY 2025 were unmodified; there were no disagreements or reportable events.
• Grant Thornton provided a letter to the SEC (filed as Exhibit 16.1) dated August 26, 2026; Deloitte had not been consulted on accounting or auditing matters during the last two fiscal years or the interim period.

Why It Matters
A change of independent auditor is material for investors because auditors review and attest to a company’s financial statements and internal controls. In this case, the filing shows the change was approved by the Audit Committee, Grant Thornton’s prior reports were unmodified, and there were no disputes—facts that suggest the switch was not driven by audit disagreements. Investors should note the effective date (Aug 21, 2026) and monitor upcoming filings (quarterly reports and the FY 2027 audit) for any further disclosures about the transition or its impact on financial reporting.