John Cook

Deputy General Counsel

Office of the General Counsel

John Cook is the Deputy General Counsel at the PCAOB. He also served as Acting General Counsel from May 2018 to February 2020.

Mr. Cook came to the PCAOB after more than seven years at the Securities and Exchange Commission, where he served most recently as a senior advisor to Chairman Jay Clayton, advising him on key matters before the Commission, including those arising out of the Office of the Chief Accountant.

Mr. Cook began his tenure at the SEC in the Office of Chief Accountant, where he participated in the SEC's oversight of accounting and auditing standards at the Financial Accounting Standards Board and the PCAOB. He then served as counsel to SEC Commissioner Daniel M. Gallagher, after which he joined the Division of Economic and Risk Analysis, where he provided legal advice on economic analyses incorporated into Commission rulemaking.

Before joining the SEC, Mr. Cook practiced law at Gibson, Dunn & Crutcher LLP, representing clients in regulatory matters.

Mr. Cook earned his J.D., cum laude, from Harvard Law School, and an undergraduate degree, magna cum laude, from the Georgetown University School of Foreign Service.