Kenneth P. Barczak

Nathan J. Neuberger is a shareholder in Reinhart’s Corporate Law Practice as well as a member of the firm’s Private Equity, Venture Capital and Corporate Finance group. Nate works with clients to facilitate a wide range of corporate sale and acquisition transactions including leveraged buyouts, strategic mergers and acquisitions, and recapitalizations. Nate represents a range of private equity sponsors located in Illinois, Wisconsin and other states, and he specializes in middle-m...

David G. Peterson is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. David G., who practices law in Waukesha, Wisconsin, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David G. is held by other top lawyers in the same geographic and legal practice area.

Mark Kapocius is a school attorney with more than twenty years of experience working in administrative leadership roles for school districts in Wisconsin. As a Shareholder in the Government Law Group and School Law Section at von Briesen & Roper, s.c., Mark focuses his practice on school law and advising other public-sector entities on labor and employment matters, governance issues, collective bargaining, public records and open meetings compliance. Mark has extensive experience assistin...

Brian T. Fahl is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Criminal Defense: White-Collar. Brian T., who practices law in Milwaukee, Wisconsin, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brian T. is held by other top lawyers in the same geographic and legal practice area.

Sarah Kaas is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Sarah, who practices law in Milwaukee, Wisconsin, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sarah is held by other top lawyers in the same geographic and legal practice area.

Nancy Bonniwell is a Shareholder focusing her practice on estate, business succession and marital property planning, estate administration and business law. She is a frequent presenter on the subjects of estate planning, business succession planning and charitable giving.

Steve Beckham is a member of the Litigation and Risk Management Practice Group at von Briesen & Roper, s.c. His practice focuses on a variety of litigation matters including commercial and business, insurance coverage and liability defense. Prior to joining von Briesen, Steve served as Associate General Counsel for a lighting and rigging technology manufacturer and was an associate at a Chicago-based class action litigation firm. During law school, Steve was a member of Wisconsin Law Scho...

For over forty-five years, Dennis has advised business owners in all areas of contract and corporate law. He focuses primarily on assisting his clients with business succession planning, estate planning, contract and corporate law—with an emphasis on mergers and acquisitions, and shareholder/partner disputes. One of the founding members of the firm in 1973, Dennis has assisted hundreds of business owners and their companies in structuring successful business succession plans. These comp...

Nick G. Kotsonis has been a shareholder with the firm since 1999 and was appointed to the Board of Directors as of January 1, 2014. His practice areas include employment litigation/worker’s compensation, business and commercial litigation, insurance coverage litigation, personal injury, premises liability, environmental/toxic tort claims and risk management.

Mike Wirth is a Shareholder in the Litigation and Risk Management Practice Group at von Briesen & Roper, s.c. Mike is a seasoned trial attorney with more than 30 jury trials across Wisconsin. He focuses his practice on professional liability, insurance coverage litigation and appellate representation. Mike has extensive experience handling professional liability claims against attorneys, law firms, accountants, accounting firms and medical professionals. His insurance coverage practice in...