Odaily Planet Daily News The chairman of the Public Company Accounting Oversight Board (PCAOB), Erica Williams, has resigned after the chairman of the Securities and Exchange Commission, Paul Atkins, requested her resignation. According to an email Williams sent to PCAOB staff, her last working day will be July 22. Williams began her term as PCAOB chairman in January 2022 and was reappointed in June 2024.