Sean M. Corpstein


Legal Assistant


  • The University of Iowa College of Law
  • Wartburg College
    2011; Magna Cum Laude


  • States: Iowa
  • Federal Courts: Northern District of Iowa, Southern District of Iowa, Eighth Circuit Court of Appeals

Sean Corpstein is a trial attorney in the firm’s litigation division and a member of the Iowa State Bar Association.

Before joining Grefe & Sidney, Sean clerked for the Honorable Leonard T. Strand, Chief United States District Court Judge for the Northern District of Iowa.  During law school, he served as a prosecution intern for the Johnson County Attorney’s Office, trying simple misdemeanors in magistrate court and externed for the Iowa Attorney General’s Office in the Criminal Appeals Division, successfully arguing a case before the Iowa Court of Appeals.  Sean also served as a Research Assistant to Professors James T. Tomcovicz and L. Song Richardson.  In addition, he was the President of the Sports Law Society and volunteered yearly at their annual three-on-three charity basketball tournament.