Roman Darmer litigates securities and complex commercial cases. He represents public and foreign companies and their directors, board committees, executives, and employees as well as private companies, investment firms, public accounting firms, and legal professionals in a wide array of proceedings related to securities law issues. These engagements involve accounting and financial statement issues, disclosure matters, fiduciary duty, insider trading, Regulation FD issues and broker/dealer supervision, as well as False Claim Act and Foreign Corrupt Practices Act matters. He has extensive experience defending enforcement actions by the SEC and other state and federal regulators. He has led numerous internal investigations on behalf of corporations and board committees.

As an Assistant U.S. Attorney in the Southern District of New York, he served in the Securities Fraud Unit and handled grand jury investigations and prosecutions. He also tried numerous cases to verdict and handled many appeals.

Roman regularly serves as pro bono counsel to a range of indigent clients. He has authored several articles on legislation and developments related to pleadings. He is a member of the Criminal Justice Act Panel of the Central District of California's Southern Division, the American Bar Association, the Association of Business Trial Lawyers, the Hispanic Bar Association of Orange County, the Hispanic National Bar Association, and the Orange County Bar Association. He also serves on the boards of the Federal Bar Association/Orange County, the Public Law Center of Orange County, the Legal Aid Society of Orange County, and the Newport Mesa Literacy Advisory Board.