Fastly Dismisses Deloitte, Names KPMG as New Independent Auditor

Fastly, Inc. replaced its longtime auditor on March 4, 2026, when the company's Audit Committee voted to dismiss Deloitte & Touche LLP and approve KPMG LLP as its independent registered public accounting firm for the fiscal year ending December 31, 2026. The edge cloud platform, traded on Nasdaq as FSLY, filed a Form 8-K with the Securities and Exchange Commission the following day disclosing the change.

The transition is not yet complete. As of the filing, KPMG was still working through its standard client evaluation process and had not formally accepted the engagement. The Form 8-K states explicitly that "KPMG is in the process of its standard client evaluation procedures and has not accepted the engagement." Fastly also confirmed that during the two most recent fiscal years, neither the company nor anyone acting on its behalf consulted KPMG on any matters covered under Item 304(a)(2)(i) or (ii) of Regulation S-K, the SEC provision governing disclosures around auditor changes.

The departure of Deloitte was documented as a clean break. Deloitte's audit reports for Fastly's consolidated financial statements for both years ended December 31, 2025 and December 31, 2024 contained no adverse opinions, disclaimers of opinion, or modifications related to uncertainty, audit scope, or accounting principles. Fastly reported no disagreements with Deloitte on accounting principles, financial statement disclosures, or auditing procedures across either of those fiscal years.

One reportable event did surface in the filing: a previously disclosed material weakness in Fastly's internal controls over financial reporting for the year ended December 31, 2024. Fastly stated that weakness "has been remediated as of December 31, 2025." The Audit Committee and Deloitte discussed the matter directly, and Fastly authorized Deloitte to respond fully to any inquiries KPMG raises about it. Deloitte followed through with a letter to the SEC dated March 5, 2026, attached to the Form 8-K as Exhibit 16.1, confirming agreement with Fastly's disclosures.

FSLY shares fell 1.47% to $20.14 on the day the filing was published. The Form 8-K was submitted to EDGAR under reference ID 0001517413-26-000089.

The auditor switch gives KPMG a significant new client in the edge computing space if the firm completes its acceptance procedures, while Deloitte exits after issuing at least two consecutive years of clean audit reports for the San Francisco-based company.