Neutral
David B. Cosgrove
Areas of Expertise:
Business Litigation, Commercial, Consumer, Products Liability, Securities
Services:
Mediator, Arbitrator
David B. Cosgrove is an award-winning trial attorney with over 30 years of litigation experience. Mr. Cosgrove was selected for the 2025 Missouri Lawyers Media POWER List of top Missouri Commercial & Consumer Litigation Attorneys and received the distinguished Lon O. Hocker Award for trial advocacy from the Missouri Bar Foundation.
Prior to his return to private practice in 2006, Mr. Cosgrove served as Missouri’s Commissioner of Securities. As Commissioner, he was responsible for identifying practices or industry sectors appropriate for enforcement measures and he interfaced with the SEC, NASD (now FINRA), NASAA (North American Securities Administrators Association) and various other state and federal enforcement agencies.
Previously, Mr. Cosgrove served as Chief Counsel in the Consumer Protection Division of the Missouri Attorney General’s Office where he supervised attorneys and investigators prosecuting civil and criminal litigation related to unlawful merchandising, fraud and anti-trust, including national multi-state litigation. He then served as Chief Legal Counsel to Governor Bob Holden. Between 1999 and 2002, Mr. Cosgrove held the position of Chief Consumer Protection Prosecutor in the Criminal Division of the Massachusetts Attorney General’s Office. Mr. Cosgrove also worked as an Assistant District Attorney and a Special Assistant United States Attorney for the U.S. District of Massachusetts, responsible for grand jury investigations and the litigation of a wide range of white-collar cases. Between 1993 and 1999, Mr. Cosgrove served as an Assistant Attorney General for the Missouri Attorney General’s Office where he litigated both criminal and civil cases. This experience included dozens of jury trials and hundreds of depositions and evidentiary hearings. Mr. Cosgrove began his career in 1990 in private practice in the Commercial Litigation Department of Stinson in Kansas City, Missouri.
Prior to his return to private practice in 2006, Mr. Cosgrove served as Missouri’s Commissioner of Securities. As Commissioner, he was responsible for identifying practices or industry sectors appropriate for enforcement measures and he interfaced with the SEC, NASD (now FINRA), NASAA (North American Securities Administrators Association) and various other state and federal enforcement agencies.
Previously, Mr. Cosgrove served as Chief Counsel in the Consumer Protection Division of the Missouri Attorney General’s Office where he supervised attorneys and investigators prosecuting civil and criminal litigation related to unlawful merchandising, fraud and anti-trust, including national multi-state litigation. He then served as Chief Legal Counsel to Governor Bob Holden. Between 1999 and 2002, Mr. Cosgrove held the position of Chief Consumer Protection Prosecutor in the Criminal Division of the Massachusetts Attorney General’s Office. Mr. Cosgrove also worked as an Assistant District Attorney and a Special Assistant United States Attorney for the U.S. District of Massachusetts, responsible for grand jury investigations and the litigation of a wide range of white-collar cases. Between 1993 and 1999, Mr. Cosgrove served as an Assistant Attorney General for the Missouri Attorney General’s Office where he litigated both criminal and civil cases. This experience included dozens of jury trials and hundreds of depositions and evidentiary hearings. Mr. Cosgrove began his career in 1990 in private practice in the Commercial Litigation Department of Stinson in Kansas City, Missouri.
Admissions:
- Missouri
- Massachusetts
- United States Supreme Court
- United States District Court, Western and Eastern Districts of Missouri
- United States District Court, Central District of Illinois
- United States District Court, District of Massachusetts
- 8th Circuit Court of Appeals
Education:
- University of Notre Dame – (B.A. Economics, cum laude 1987)
- University of Notre Dame (J.D. 1990)