Lewis D. Zirogiannis

Lewis D. Zirogiannis is an attorney with Massumi + Consoli LLP in Dallas, Texas. He has been recognized by Best Lawyers for his work in Commercial Litigation and represents businesses and executives in complex disputes and regulatory matters.

Lewis advises private equity firms, portfolio companies, public and private businesses, C-suite officers, and boards of directors on complex commercial litigation, white collar defense, and regulatory enforcement matters. His work spans a range of industries, including financial services, technology, energy, transportation, and healthcare.

He has represented clients before the U.S. Supreme Court as well as federal and state trial and appellate courts across the United States. Lewis has also conducted investigations and managed cross-border matters involving Asia, Latin America, Africa, and Europe.

Before returning to private practice, Lewis spent approximately a decade in executive-level in-house counsel roles at two Fortune 50 global companies operating in the financial services, energy, and technology sectors. In these positions, he worked closely with boards of directors and regulatory agencies while overseeing global compliance programs, significant litigation, government and internal investigations, and regulatory affairs.

Lewis draws on his in-house experience to help clients address litigation and regulatory challenges with a practical understanding of business operations and risk management. By working closely with clients to understand their operational priorities and long-term goals, he develops litigation strategies designed to address legal risk while helping organizations continue to operate effectively.