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In March 2025, numerous U.S. public companies announced auditor changes, including shifts among major firms like Deloitte, EY, PwC, and KPMG. Key transitions included Xencor, Inc. appointing KPMG, SIFCO Industries moving to Deloitte, and Serve Robotics engaging PwC. Smaller audit firms such as HTL International, LLC, Boladale Lawal & Co., and Victor Mokuolu, CPA PLLC also saw increased activity among micro-cap and international companies. These changes reflect shifting corporate audit strategies, regulatory adjustments, and ongoing audit firm realignments.

In recent months, several companies have changed their auditors due to various reasons, including mergers, policy shifts, and committee decisions. Notable changes include Potbelly Corporation appointing KPMG LLP after dismissing Deloitte and Wayfair Inc. replacing Ernst & Young LLP with PricewaterhouseCoopers LLP. Transparency in auditor relationships is crucial for businesses.

The integration of Generative AI in auditing enhances financial audits through improved risk assessment and fraud detection. The Big Four firms—Deloitte, PwC, EY, and KPMG—leverage AI-driven tools to increase efficiency and accuracy. However, challenges such as data reliability and regulatory concerns highlight the need for human oversight alongside technological innovation.

New US Chairman for PwC, Deloitte oversight failure in Nigeria, and PwC's new acquisition

SEC registered companies are required to file form 8-K, item 4.01 notice in the event of a change in auditors. We analyze auditor changes for each month looking into auditor change and its reason.