Gregory Sperlich

Gregory Sperlich

Rapid City, South Dakota

Greg Sperlich has been with DeMersseman Jensen since 2004. Prior to joining the firm he was the Chief Deputy of Pennington County's State Attorney's Office. Greg is a trial attorney who specializes in criminal law, family law, civil litigation and civil rights litigation. He has tried 102 cases to verdict. He practices in both state and federal court and has appeared before the 8th Circuit Court of Appeals.

Greg successfully represented an Air Force Widow against the United of Omaha insurance company for failing to honor an insurance claim. Greg, along with his wife Angela Colbath, received a not guilty verdict for their client Becky Sotherland in federal court on highly publicised charges of assault and civil rights violations. In St. Clair V. Roberts a Meade County jury awarded his client over one-million dollars. While a prosecutor he convicted Kenneth Martin of Murder for shooting an off-duty police officer.

Areas of Practice

  • Criminal Defense (State and Federal)
  • Family Law
  • Civil Litigation
  • Civil Rights Litigation

Litigation Percentage

  • 100% of Practice Devoted to Litigation

Bar Admissions

  • South Dakota, 1997
  • U.S. District Court District of South Dakota, 2004
  • U.S. Court of Appeals 8th Circuit


  • University of South Dakota School of Law, Vermillion, South Dakota
    • J.D. - 1996
  • University of South Dakota, Vermillion, South Dakota
    • B.S. - 1993
    • Major: Economics

Honors and Awards

  • Best Lawyers in America - Criminal Defense, 2011 - Present

Professional Associations and Memberships

  • National Association of Criminal Defense Lawyers, Member, 2011 - Present

Past Employment Positions

  • Pennington County Office of the States Attorney, Chief Deputy, 1997 - 2004