Jonathan W. Hackbarth

Sarah F. Kaas is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Sarah F., 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 F. is held by other top lawyers in the same geographic and legal practice area.

Attorney Matthew Fernholz focuses his practice on commercial litigation, trust and fiduciary disputes, business torts, trade secrets, non-compete agreements, defamation, and appellate work. In addition, he has developed one of the preeminent political and election law practices in the State of Wisconsin, and has handled several high-profile matters, from representing candidates for statewide office, successfully challenging the Governor’s emergency powers, arguing before the Wisconsin E...

Thadd J. Llaurado is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Thadd J., who practices law in Waukesha, Wisconsin, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thadd J. is held by other top lawyers in the same geographic and legal practice area.

Ann S. Jacobs is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Ann S., who practices law in Milwaukee, Wisconsin, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ann S. is held by other top lawyers in the same geographic and legal practice area.

Robert J. Heath is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Robert J., who practices law in Milwaukee, Wisconsin, has been recognized since 2003. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert J. is held by other top lawyers in the same geographic and legal practice area.

Attorney Aislinn M. Penkwitz is a Partner at Nelson, Krueger & Millenbach LLC in Milwaukee, Wisconsin, where she represents individuals and families in a wide range of family law matters. Her practice includes divorce, post-judgment disputes and modifications, paternity actions, child custody and placement matters, child support issues, restraining orders, and guardian ad litem appointments. She works closely with clients to address both the legal and practical concerns that often arise i...

Steve is a seasoned litigation attorney with over 20 years of experience representing corporate clients and insurers in some of their most complex and high-exposure cases. While deeply rooted in the Wisconsin legal community, Steve regularly manages litigation dockets and coordinates defense strategy across jurisdictions. Clients rely on him not just for results, but for clear communication, sound judgment, and a steady hand throughout litigation. Steve’s practice spans a wide range of ...

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.

Jerome M. Janzer is the CEO of Reinhart Boerner Van Deuren s.c.. He is also co-chair of the firm's Real Estate Practice and a member of the Business Law Practice. Drawing on more than 25 years of experience, Jerry counsels and represents clients in a variety of industries including real estate, financial institutions, transportation, construction, manufacturing and printing. He advises his clients on every aspect of acquiring, growing and eventually selling a business including capitalization...

I have been practicing law for more than 35 years on behalf of Wisconsin individuals and families who have suffered a loss caused by the carelessness of others. Prior to joining GCW I founded Laufenberg Law Group in 2000, and decided to join GCW because we share many of the same professional principles and standards which have guided me through my career .Over the years I have been an active developer of Wisconsin tort law, appearing before state and federal appellate courts in numerous cases...