David's representations include banks and foreign and domestic corporations in connection with US regulatory and criminal investigations concerning securities, commodities, and insider trading offenses, and violations of the Foreign Corrupt Practices Act and the US antitrust, money laundering and economic sanctions laws as well as individual officers and employees in similar investigations.

Before joining the firm, Mr. Esseks was an Assistant United States Attorney for the Southern District of New York and Chief of that Office’s Securities and Commodities Fraud Task Force. In that role, he oversaw a staff of 20 prosecutors and coordinated fraud investigations with the Securities and Exchange Commission, Commodity Futures Trading Commission, and FINRA.

Mr. Esseks has been recognized in band 1 by Chambers and refers to him as “'Experienced, thoughtful and results-driven'…He 'is calm under pressure, smart and strategic.'”, "an extremely talented trial lawyer and cross-examiner who is the picture of credibility in the courtroom".

Chambers also describes Mr. Esseks as "a go-to attorney for a range of corporations and financial institutions facing allegations of criminal misconduct and regulatory proceedings, drawing praise as an 'incredibly smart attorney with excellent judgment.'" David has also been named as The 2024 Lawdragon 500 Leading Litigators in America .

Mr. Esseks graduated cum laude from Williams College with a B.A. in 1987 and magna cum laude from University of Michigan Law School with a J.D. in 1990 where he was an Articles Editor of the Law Review. He clerked for the Honorable Amalya Lyle Kearse on the United States Court of Appeals for the Second Circuit.

Market sources have praised David’s "very thorough and thoughtful approach to factual investigation" and his "very deep knowledge of financial markets."