Matthew P. Kostolnik, Attorney


Matt Kostolnik is co-chair of Moss & Barnett's litigation practice group. As a litigator and trial attorney, Matt successfully defends and prosecutes civil claims at all stages of litigation. He advises businesses and individuals in a variety of matters, including litigation risks and opportunities, business disputes and negotiations, employment matters, insurance issues, and tort claims. His trial background includes trying ten cases to conclusion before a jury, as well as several bench trials and binding arbitration decisions. Matt is also a member of Moss & Barnett's accountant law defense team.

Matt has briefed and argued before the Minnesota Supreme Court and the Minnesota Court of Appeals. His litigation cases frequently require him to manage complex procedural and legal matters involving injunctions/restraining orders, dispositive and non-dispositive motions, class actions, alternative dispute resolution, and administrative hearings.  

Known among his legal peers as collegial and responsive, he is frequently relied upon as local counsel for clients with cases venued in the state and federal courts of Minnesota. During his first ten years of practice, Matt was often listed by Minnesota Super Lawyers as a “Rising Star.”

Practice Areas

Professional Associations

  • Federal Bar Association
  • Minnesota State Bar Association
  • Hennepin County Bar Association
  • Amdahl Inn of Court

Honors & Recognition

  • "Minnesota Super Lawyers" – "Rising Stars," 2005, 2006, 2007, 2008, 2009, 2011, 2012

Bar Admissions

  • Minnesota
  • U.S. District Court for the Southern District of Indiana
  • U.S. District Court for the Eastern District of Michigan
  • U.S. District Court for the District of Minnesota
  • U.S. District Court for the District of North Dakota
  • U.S. District Court for the Eastern District of Tennessee
  • U.S. District Court for the Eastern District of Wisconsin
  • U.S. District Court for the Western District of Wisconsin
  • U.S. Court of Appeals for the Eleventh Circuit


  • University of Minnesota Law School, Minneapolis, MN, J.D., cum laude
  • St. John's University, Collegeville, MN, B.A., cum laude

Classes / Seminars Taught

  • “Minnesota State District Court Civil Practice Deskbook” – MSBA Continuing Legal Education, March 26, 2009
  • “Regulatory Review/Certified Hazardous Materials Management” – Academy of Certified Hazardous Materials Managers, North Star Chapter

Community Involvement

  • FBI Citizens’ Academy Alumni Association
  • Eagle Brook Church – Volunteer
  • Iron Mustang Wrestling – Volunteer
  • North Suburban Soccer Association – Volunteer
  • Mounds View Youth Football – Volunteer
  • Shoreview Parks & Recreation – Volunteer
  • The Fund for the Legal Aid Society – One Hour of Sharing Associates Campaign, Former Solicitor