David Keyko is a partner in the law firm's Litigation practice and is located in the New York office. His practice has focused on major, complex litigation, often involving multiple parties. He has handled cases involving allegations of securities or other types of fraud, antitrust violations, ethics issues and trusts and estates issues across the country, often involving insurance coverage issues. He has conducted internal investigations and represented clients responding to government probes. He has also served as an expert witness in connection with legal malpractice litigation. Among the prominent cases Mr. Keyko has handled was the representation of a defendant in a $1.4 billion antitrust lawsuit.

Mr. Keyko was named the "New York City Best Lawyers Ethics and Professional Responsibility Law Lawyer of the Year" for 2012, 2017 and 2019. He has lectured and written widely on securities, antitrust, legal ethics and general litigation topics, and chairs PLI's programs on federal pretrial practice and ethics for corporate lawyers. He is a former columnist for the New York Law Journal and has written several dozen articles on litigation and ethics issues for such publications as the National Law Journal.

Mr. Keyko has undertaken a variety of pro bono projects, including representing for over 20 years a death row inmate in Alabama asserting that the inmate is innocent of the crime for which he was convicted, serving as Chair of the Board of  Mobilization for Justice Legal Services, Inc., and serving two terms as a member of the Departmental Disciplinary Committee of the First Department. He was Chairman of the Professional Responsibility Committee of the Association of the Bar of the City of New York. He chaired the ad hoc committee of the Association that commented on proposed SEC regulations under Section 307 of the Sarbanes-Oxley Act of 2002. He is currently the chair of the Association's Legal Referral Service Committee and is a member of the ABA Legal Referral and Information Service Committee.

Mr. Keyko is a member of Pillsbury's Sarbanes-Oxley Committee, Opinions Committee and Professional Responsibility Committee. He is an adjunct professor at the Fordham University School of Law where he teaches legal ethics.