Ms. Diamantopoulos currently serves as Counsel to the Regional Director of the U.S. Securities and Exchange Commission’s Chicago Regional Office. She has held this position since September 2010. Prior to this appointment, she served as the Senior Special Counsel of Examinations for six years and was responsible for advising the broker-dealer examination program, representing the Commission in dealings with the securities industry, state and federal officials and the public, and handling enforcement referrals. Prior to that appointment in October 2004, she served for over ten years in the Commission’s Division of Enforcement. For five of those years, Ms. Diamantopoulos served as a Branch Chief, supervising a group of attorneys.
During her tenure in the Enforcement Division, Ms. Diamantopoulos investigated, litigated and supervised several distinguished cases involving violations of the federal securities laws, such as financial, internet and offering fraud, sales practice abuses, failure to supervise, insider trading, market manipulation, disclosure issues and pay-to-play. Ms. Diamantopoulos has also worked with several US Attorney’s Offices across the country and was deputized as a Special Assistant United States Attorney in the District of Minnesota and was co-counsel in a multi-million dollar criminal jury trial involving securities, mail and wire fraud, and money laundering.
Ms. Diamantopoulos is a member of the Trial Bar for the U.S. District Court for the Northern District of Illinois. She graduated from Northwestern University School of Law in 1994. Prior to law school, Ms. Diamantopoulos attended and graduated, cum laude, with a Bachelor of Arts degree in Political Science and a Spanish minor, from Marquette University in 1991.