Katherine Stoller > A&O Shearman > New York, United States > Lawyer Profile

A&O Shearman is recognized for its securities litigation and regulatory investigations work, defending clients before the SEC, the FDIC, as well as European regulatory authorities. The firm represents a range of financial institutions including Citibank and Bank of America. Senior partner Adam Hakki, based in New York, is best known for his work in securities and internal investigations. He is regularly involved in multijurisdictional matters and has extensive trial experience. Hakki co-heads the New York practice with Richard Schwed. New York-based Grace Lee is another notable name in the group and is involved in regulatory investigations, commercial litigation, and cross-border disputes. The practice also benefits from the expertise of Katherine Stoller, based in New York, who specializes in cross-border financial crime. Mark Lanpher, based in Washington DC, is experienced working on matters before the CFTC, DOJ, and IRS. Former partner Patrick Robbins departed in July 2023 to work for the DOJ.

A&O Shearman‘s international litigation practice has vast trial experience, with in-depth knowledge of securities litigation, white-collar, regulatory, and investigations work. Information requestions and enforcement actions are regularly advised on by the team, with expertise in associated business, reputational, and regulatory risks. The team has a well-established China securities litigation department, and represents a range of leading clients, including Danske Bank, Citigroup, BNP Paribas, Bank of America, and Softbank. Based in the New York office, Adam Hakki is a well-commended litigator for securities and trading market cases, alongside the DOJ, SEC, and FINRA. Hakki is joined by Richard Schwed in the same office. Katherine Stoller bolsters the team with her expertise conducting corporate internal investigations, including whistleblower and workplace investigations. Also of note are New York-based John Nathanson and in the Washington DC office, Mark Lanpher.

With a strong international presence, A&O Shearman is well placed to advise corporates on cross-border investigations. The team has experience navigating multiple jurisdictions, including Australia, Europe, Asia, and the UAE.  The team also regularly represents individuals facing allegations of market manipulation, insider trading, and tax offences, among other misconduct. Leading the practice from New York, David Esseks is a seasoned litigator who frequently represents banks as well as domestic and international companies. Eugene Ingoglia and Julian Moore are also based in New York. Ingoglia is particularly adept at handling insider trading matters, while Moore is skilled at designing and implementing compliance programs. Located in Washington DC, Claire Rajan specializes in corruption matters. Following the merger with Shearman & Sterling LLP in 2024, the New York team has expanded to include Adam Hakki, Richard Schwed, and Stephen Fishbein. Hakki specializes in securities laws, while Schwed advises on a range of investigations in the financial services sector. Fishbein is also an expert at handling matters relating to financial crimes such as insider trading. Katherine Stoller and Christopher LaVigne are further stand out members of the New York team. LaVigne focusses on cases concerning securities fraud, while Stoller represents major corporations across the globe that are facing investigations into corruption, money laundering, and violations of economic sanctions.