Prior to joining Citadel, David was Director of the U.S. Securities and Exchange Commission’s (SEC) Chicago Office, and served as co-chair of the SEC’s Cybersecurity Working Group. Previously, he spent nearly 25 years as a prosecutor in the U.S. Attorney’s Office for the Northern District of Illinois, including 11 years as head of the office’s criminal division. He began his legal career as a Law Clerk to the Honorable Brian Duff of the U.S. District Court for the Northern District of Illinois. David is an Adjunct Professor teaching Cybersecurity and the Legal System at the University of Illinois College of Law. He received a bachelor’s degree from the University of Chicago and a J.D. from Stanford Law School.