Donald J. "Don" Murn

Julie Malloy is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Corporate Law. Julie, 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 Julie is held by other top lawyers in the same geographic and legal practice area.

Shareholder Michael J. Cohen has more than 25 years of experience in complex commercial litigation in federal and state courts. His proven record of numerous favorable verdicts at the trial and appellate levels has earned him a reputation as one of Wisconsin’s preeminent business litigators. For many years, Mike has been recognized by members of the Wisconsin bar and judiciary as one of the top lawyers in the state. Mike concentrates his practice on complex commercial litigation includi...

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.

Jim’s practice focuses on representing privately held businesses and their owners on the wide variety of legal matters that may arise. This includes extensive experience with significant corporate transactions such as purchases and sales of businesses, complex contractual matters, and planning for business succession. In his practice, Jim works with clients across a wide range of industries, including fintech, manufacturing, distribution, and professional services. Jim has a unique pers...

Jamie Barwin is a Shareholder in the Trusts & Estates Section at von Briesen & Roper, s.c. She focuses her practice on estate planning, probate and estate administration, business and corporate planning, special needs planning and tax. Jamie is also a licensed CPA in both Wisconsin and Michigan with six years of experience at Big 4 Accounting. Jamie delivers comprehensive estate planning services to families and businesses. Jamie helps her clients customize and understand their person...

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.

Steve Nelson is a Shareholder in the Litigation and Risk Management Practice Group. Steve has extensive experience in litigation and concentrates his practice in commercial litigation including construction, civil and business, contracts and lease disputes, toxic tort, OSHA counseling and citation defense, personal injury defense, product liability, professional liability defense and Wisconsin fair dealership law. He has litigated on behalf of clients involved in complex construction matters ...

Dan Miske earned his bachelor’s degree in accounting from Marquette University and his Juris Doctor from DePaul University College of Law. He practices with Kaman & Cusimano LLC in Milwaukee, Wisconsin, where he works with clients on matters involving Commercial Litigation, Community Association Law, Litigation – Real Estate, and Real Estate Law. Dan has served on various boards, giving him practical insight into the operational and legal challenges faced by community associat...

Aaron H. Aizenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Aaron H., 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 Aaron H. is held by other top lawyers in the same geographic and legal practice area.

John E. Mossberg is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - ERISA. John E., who practices law in Milwaukee, Wisconsin, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John E. is held by other top lawyers in the same geographic and legal practice area.