Tina Diamantopoulos

Regional Director, SEC

Tina Diamantopoulos is Director of the Chicago Regional Office, the Commission’s second-largest regional office.

Ms. Diamantopoulos is a 30-year veteran of the SEC and has held leadership roles in both the Division of Enforcement and the Division of Examinations. Previously, Ms. Diamantopoulos served as the Associate Director for the regional broker-dealer examination program supervising teams that examine broker-dealers, exchanges, transfer agents, municipal advisors, funding portals and security-based swap dealers.

As Director of the Chicago Regional Office, Ms. Diamantopoulos leads a staff of more than 275 attorneys, accountants, investigators, securities compliance examiners, and other personnel involved in the performance of compliance examinations and the investigation and litigation of enforcement actions.

Ms. Diamantopoulos began working in the Enforcement Division in the Chicago office in 1994 and was promoted to Branch Chief in 1999. In 2004, she was selected to serve as a Senior Special Counsel in the Examinations Division, where she 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. In 2010, she became the Counsel to the Regional Director, where she provided advice on legal, policy and operational issues.

Ms. Diamantopoulos earned her law degree from Northwestern Pritzker School of Law and her bachelor’s degree from Marquette University.