Shearman & Sterling LLP multinational law firm headquartered in New York City, United States.

Mary Pennisi is a senior associate in the Litigation practice. She focuses on complex commercial and securities litigation, intellectual property litigation, investigations, enforcement actions, and regulatory proceedings. Mary has represented clients in trials and appeals in federal and state courts, internal investigations, and investigations by the Securities and Exchange Commission, United States Department of Justice, Consumer Financial Protection Bureau, and other regulators. She has defended and provided securities and litigation advice to financial institutions and a wide range of corporate clients.

In addition, Mary is a member of the firm’s FinTech cross-practice group and an adviser in its FinTech Advisory mentorship program, dedicated to supporting startups shaping the future of financial services. Mary has been named in New York Super Lawyers as a Rising Star in litigation from 2015 through 2019.