David Yoshimura



David Yoshimura is an experienced white collar criminal defense attorney with extensive litigation and investigative experience. As a trial and appellate litigator, he has a history of achieving success not only in white collar criminal and regulatory defense, but also in complex and high-value commercial litigation and arbitration. Based on his considerable experience in regulatory and criminal matters combined with skill in e-discovery, he has developed a sophisticated internal investigations practice to assist clients in identifying and mitigating regulatory, criminal or civil exposures even before they become legal disputes. But he also advocates for clients’ best outcomes from day one, seeks out favorable pre-litigation resolutions, and has achieved white collar prosecution declination decisions and below-cost-of-defense settlements, saving clients both costs and further exposure.

Examples of David’s successes include:

  • Engaged by the largest newspaper publisher in the United States to represent one of its journalists, achieved not-guilty verdicts on multiple counts following trial of reporter charged with failure to disperse and interference with official acts while covering local protest events. The case was reported nationally and was a bellwether for prosecutors across the country contemplating charges against journalists engaged in covering protest events in 2020.
  • Won complete dismissal of all counterclaims on behalf of major multinational technology conglomerate headquartered in the U.S. in corporate tort action and won interlocutory appeal affirming dismissal.
  • Conducted high-profile internal investigations and co-authored public reports for clients including the Iowa Supreme Court in an investigation into a technology security testing dispute and the Iowa Democratic Party in an investigation into the 2020 caucuses.
  • Won a complete zero-dollar defense award for CFTC-regulated commodities merchant client, entirely defeating a claim for more than $10 million, in trade association arbitration following a three-day evidentiary hearing.
  • Secured a complete trial win on behalf of major nationwide big-box retailer client in a bench trial against municipal agency. Immediately following the close of evidence and argument at trial, the court orally announced its ruling from the bench in client’s favor granting all relief sought.
  • Facilitated favorable global resolution of highly complex multinational M&A dispute on behalf of sellers of security contractor company, involving three international arbitration proceedings before the London Court of International Arbitration; represented the client as both a claimant and a respondent in LCIA arbitrations; and incorporated complex U.S. federal discovery procedures for international arbitral tribunals to achieve results.
  • Successfully appealed a criminal sentence to the Seventh Circuit Court of Appeals for an individual client by court appointment, briefing complex federal criminal law issues and presenting oral argument. The Seventh Circuit vacated the judgment and remanded to the district court for resentencing.

Prior Experience

Prior to joining the firm, David accumulated a wealth of litigation perspective from the judges’ bench, clerking for Judge Robert Pratt in the U.S. District Court for the Southern District of Iowa, including numerous sittings by designation on the Ninth Circuit Court of Appeals, and at the Iowa Supreme Court. Before joining the legal profession, he was an English language instructor in American and Japanese schools.


Bar Admissions


Court Admissions

U.S. Court of Appeals for the Seventh Circuit
U.S. Court of Appeals for the Eighth Circuit
U.S. District Court for the Central District of Illinois
U.S. District Court for the Northern District of Iowa
U.S. District Court for the Southern District of Iowa


U.S. District Court for the Southern District of Iowa, Hon. Robert W. Pratt, 2016-2018
Iowa Court of Appeals, Hon. Amanda Potterfield, 2014-2015


Loyola University Chicago School of Law
J.D. cum laude, Loyola University Chicago Law Journal (lead article editor), Loyola University Chicago International Law Review (associate editor) (2014)

Iowa State University
B.A. in English (2005)

Insights & Events

Other Perspectives
  • Should Evidence Found During a Search Incident to Arrest Be Suppressed if the Arrest Was Based on a Valid Warrant Discovered During an Illegal Detention?
    Author,43 Preview U.S. Sup. Ct. Cases 156, 2016

Leadership & Community

Professional Associations

  • Iowa Bar Association


  • Best Lawyers® — "Ones to Watch," Alternative Dispute Resolution, 2021 - 23; Commercial Litigation, 2021-23
  • Faegre Drinker — Pro Bono Honor Roll, 2020-22
  • Faegre Baker Daniels — Pro Bono Honor Roll, 2018-19
Awards Methodology
No aspect of these recognitions has been approved by the highest court of any state.
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